zxdu500 500a combined power supply system user’s manual
TRANSCRIPT
ZXDU500 500A Combined Power Supply System
User’s Manual
ZTE CORPORATION
© ZTE Corporation. 2002, Shenzhen, P. R. China
All rights reserved. No part of this publication may be excerpted, reproduced, translated, annotated or edited, in any form or by any means, without the prior written permission of the copyright owner.
ZXDU500 500A Combined Power Supply System User’s Manual
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3/F., A Wing, ZTE Plaza, Hi-Tech Industrial Park, Shenzhen, P. R. China
Tel: (0086) 755–26790192
Fax: (0086) 755–26790160
Post-code: 518057
* * * *
September 2002 First Edition
S.N.: SJZL2002588
Preface
ZXDU500 500A combined power supply system is the 50A series combined power
supply for communications, one of the latest version developed by ZTE Corporation.
The ZXDU500 500A combined power supply system uses two kinds of standard
cabinets with the heights of 2m and 1.6m. It is an intelligent, unattended, and combined
power supply system. This manual mainly introduces the overall architecture, system
features, main performance, working principles of the ZXDU500 500A combined
power supply system, and the equipment’s installation, debugging, maintenance and
management.
Chapter 1 - System Overview, describes system features and precautions.
Chapter 2 - System Structure & Working Principles, this chapter introduces the
architecture, working principles and configuration of the system. The working
principles, architecture, technical performance of each component are described in
detail. Then, the networking mode for monitoring is covered in the end.
Chapter 3 - Equipment Installation, this chapter mainly describes the basic requirement,
installation preparation of the system’s installation. The installation and electric
connection of each component are described in detail.
Chapter 4 - System Debugging, this chapter elaborates on power-on testing of the
system’s parts such as AC power distribution unit, rectifier, DC power distribution unit,
etc.; specific operation interfaces for the monitoring unit; system acceptance flow, and
so on.
Chapter 5 - System Usage, introduces the usage of the system, covering the rectifier’s
capacity expansion, load adding and processing of system alarms.
Chapter 6 - Maintenance & Management, describes major points of the daily
management and maintenance of the system, as well as the handling of emergencies.
Chapter 7 - Packaging, Transportation & Storage, describes the conditions and
precautions of the packaging, storage and transportation of the system.
Appendix A gives the threshold ranges specified for the power supply parameters,
including the ranges and default values of foreground parameters of the monitoring
unit, which can be used as a reference when users configure the system.
Appendix B lists documents and accessories supplied with the system.
Appendix C gives a principle block diagram about AC/DC power distribution, together
with the connection diagram of the AC/DC power distribution system to facilitate the
user’s maintenance and repairs.
Statement: The actual product may differ from what is described in this manual due to
frequent updates of ZTE products and fast development of technologies. Please accept
our apology for any inconvenience it may cause to you. Please contact our local
customer service centers for the updates of our products.
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Contents
1. SYSTEM OVERVIEW .............................................................................................................................1
1.1 INTRODUCTION .....................................................................................................................................1
1.2 PERFORMANCE & FEATURES ...............................................................................................................1
1.3 MAN-MACHINE INTERACTION ...............................................................................................................3
1.4 SYSTEM PERFORMANCE INDEXES .......................................................................................................3
1.5 CAUTIONS .............................................................................................................................................4
2. STRUCTURAL FEATURES & WORK PRINCIPLES ........................................................................5
2.1 OVERALL STRUCTURE AND CONFIGURATION ......................................................................................5
2.1.1 Overall structure..........................................................................................................................5
2.1.2 Basic configuration .....................................................................................................................8
2.2 INTRODUCTION TO SYSTEM PRINCIPLES..............................................................................................9
2.3 AC POWER DISTRIBUTION UNIT .........................................................................................................10
2.3.1 Working principles ....................................................................................................................10
2.3.2 Structure of AC power distribution unit ..................................................................................11
2.4 RECTIFIER...........................................................................................................................................14
2.5 DC POWER DISTRIBUTION UNIT .........................................................................................................17
2.5.1 Working principles ....................................................................................................................17
2.5.2 Structure of DC power distribution unit..................................................................................18
2.5.3 Functional characteristics ........................................................................................................20
2.6 SUPERVISION UNIT .............................................................................................................................21
2.6.1 Overview ....................................................................................................................................21
2.6.2 Structure.....................................................................................................................................22
2.6.3 Function of the monitoring unit ...............................................................................................33
2.6.4 Check precision.........................................................................................................................35
2.6.5 Alarm...........................................................................................................................................36
2.7 COMMUNICATIONS NETWORKING SCHEMES......................................................................................36
2.7.1 Simple RS232 serial port mode ..............................................................................................36
2.7.2 Dial-up mode (MODEM mode) ...............................................................................................37
2.7.3 ZXJ10 digital SPC switch mode .............................................................................................37
2.7.4 SCM mode .................................................................................................................................38
2.7.5 Access network mode ..............................................................................................................39
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2.7.6 CDMA mode.............................................................................................................................. 41
3. EQUIPMENT INSTALLATION ............................................................................................................ 43
3.1 INSTALLATION PROCEDURES ............................................................................................................. 43
3.2 BASIC REQUIREMENTS FOR POWER SUPPLY SYSTEM INSTALLATION............................................... 44
3.2.1 Environment requirements ...................................................................................................... 44
3.2.2 Power supply requirements .................................................................................................... 44
3.2.3 Safety and protection requirements....................................................................................... 45
3.3 PREPARATIONS BEFORE INSTALLATION ............................................................................................ 48
3.3.1 Safety check.............................................................................................................................. 48
3.3.2 Cooperation of the office party ............................................................................................... 48
3.3.3 A complete preparation for tools and instruments............................................................... 48
3.3.4 Preparations of technical documents .................................................................................... 49
3.4 WORK OF SUPPORTING FACILITIES OF THE POWER SUPPLY SYSTEM .............................................. 49
3.4.1 Battery installation .................................................................................................................... 49
3.4.2 Laying of power cables ............................................................................................................ 49
3.5 UNPACKING AND ACCEPTANCE.......................................................................................................... 50
3.5.1 Shipping ..................................................................................................................................... 50
3.5.2 Unpacking.................................................................................................................................. 50
3.5.3 Packing list ................................................................................................................................ 50
3.6 CABINET INSTALLATION ..................................................................................................................... 51
3.6.1 Cabinet installation requirements........................................................................................... 51
3.6.2 Cabinet installation procedure ................................................................................................ 52
3.7 OVERALL SYSTEM ASSEMBLY ............................................................................................................ 58
3.7.1 Assembling and fixing the monitoring unit ............................................................................ 59
3.7.2 Modem installation and fixing ................................................................................................. 60
3.7.3 Rectifier installation and fixing ................................................................................................ 61
3.8 ELECTRICAL CONNECTION ................................................................................................................. 62
3.8.1 Connection of AC input lines .................................................................................................. 63
3.8.2 Connection of DC load lines ................................................................................................... 64
3.8.3 Connection of battery cables .................................................................................................. 66
3.8.4 Connection of grounding cables............................................................................................. 67
3.8.5 Electrical connection of the rectifier ....................................................................................... 69
3.8.6 Electrical connection of the monitoring unit.......................................................................... 69
3.8.7 Binding cables........................................................................................................................... 73
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3.9 INSTALLATION CHECK .........................................................................................................................75
3.9.1 Cabinet check............................................................................................................................75
3.9.2 Check of electrical connection ................................................................................................76
4. SYSTEM DEBUGGING ........................................................................................................................77
4.1 STARTING UP AND SHUTTING DOWN THE SYSTEM ............................................................................77
4.1.1 Check before start-up...............................................................................................................77
4.1.2 Debugging procedures.............................................................................................................77
4.1.3 Startup procedures ...................................................................................................................78
4.1.4 Shutdown sequence.................................................................................................................79
4.2 TESTING THE AC DISTRIBUTION UNIT................................................................................................79
4.3 DEBUGGING THE RECTIFIER...............................................................................................................80
4.4 TESTING THE MONITORING UNIT ........................................................................................................81
4.4.1 Overview of the monitoring unit ..............................................................................................81
4.4.2 Powering on the monitoring unit .............................................................................................81
4.4.3 Enter system interface .............................................................................................................82
4.4.4 Real time data display..............................................................................................................83
4.4.5 Alarm data display ....................................................................................................................85
4.4.6 System parameter setting........................................................................................................86
4.4.7 “System maintenance & control” menu .................................................................................93
4.5 BACKGROUND MONITORING...............................................................................................................94
4.6 DC POWER DISTRIBUTION UNIT DEBUGGING AND BATTERY CONNECTION.......................................95
4.6.1 Connecting batteries ................................................................................................................96
4.6.2 Load the loading equipment....................................................................................................96
4.7 DEBUG THE WHOLE SYSTEM ..............................................................................................................97
4.7.1 Set system parameters ............................................................................................................97
4.7.2 Test data detection precision ..................................................................................................97
4.7.3 Test system function and alarm protection performance....................................................97
4.7.4 Test the current equalization characteristic of the system .................................................98
4.8 SYSTEM ACCEPTANCE........................................................................................................................98
4.8.1 Apply for preliminary test .........................................................................................................99
4.8.2 Installation acceptance ............................................................................................................99
4.8.3 Acceptance report of commissioning.....................................................................................99
4.8.4 Prepare relevant document .....................................................................................................99
4.8.5 Acceptance ................................................................................................................................99
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5. SYSTEM USAGE ................................................................................................................................ 101
5.1 SYSTEM POWER ON ......................................................................................................................... 101
5.1.1 System startup ........................................................................................................................ 101
5.1.2 System shut-down.................................................................................................................. 102
5.2 USE OF THE RECTIFIER .................................................................................................................... 102
5.2.1 Rectifier backup ...................................................................................................................... 102
5.2.2 Capacity expansion of the rectifier....................................................................................... 102
5.2.3 Replace the rectifier fan......................................................................................................... 103
5.3 BATTERY USAGE .............................................................................................................................. 103
5.3.1 Charge and discharge battery .............................................................................................. 103
5.3.2 Choice of battery .................................................................................................................... 104
5.3.3 Matters for attention during usage and maintenance of batteries................................... 105
5.4 ALARM DESCRIPTION AND HANDLING .............................................................................................. 105
5.4.1 Solutions to the alarms that affect the output of the system ............................................ 106
5.4.2 Alarms that do not affect the output of the system and their solutions .......................... 107
5.5 ADDING DC LOAD............................................................................................................................ 108
5.5.1 The use of fuse extractor....................................................................................................... 108
5.5.2 Adding DC Load ..................................................................................................................... 108
6. MAINTENANCE & MANAGEMENT................................................................................................. 110
6.1 EQUIPMENT ROOM MANAGEMENT ................................................................................................... 110
6.1.1 General requirements ............................................................................................................ 110
6.1.2 Management on unattended stations .................................................................................. 111
6.2 DAILY RECORDS ............................................................................................................................... 112
6.3 HANDLING SPECIAL CASES .............................................................................................................. 112
6.3.1 Blackout ................................................................................................................................... 112
6.3.2 AC over-voltage/under-voltage protection .......................................................................... 113
6.3.3 Disasters and accidents ........................................................................................................ 113
6.4 EQUIPMENT MAINTENANCE .............................................................................................................. 114
6.4.1 Major points for power supply maintenance....................................................................... 114
6.4.2 Troubleshooting for AC power distribution unit.................................................................. 114
6.4.3 Troubleshooting for DC power distribution unit.................................................................. 115
6.4.4 Handing of the rectifier failure............................................................................................... 116
6.4.5 Troubleshooting for the monitoring unit .............................................................................. 117
6.5 EMERGENCY HANDLING ................................................................................................................... 118
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6.5.1 Principle for emergency handling .........................................................................................118
6.5.2 Emergency handling for AC/DC power distribution unit....................................................118
6.5.3 Emergency handling for the monitoring unit .......................................................................118
6.5.4 Emergency handling of the rectifier failure .........................................................................119
7. PACKAGING, TRANSPORTATION & STORAGE ........................................................................120
7.1 PACKAGING.......................................................................................................................................120
7.2 TRANSPORTATION ............................................................................................................................120
7.3 STORAGE ..........................................................................................................................................120
APPENDIX A THRESHOLD RANGES OF POWER & ENVIRONMENT PARAMETERS ..........121
APPENDIX B DELIVERY ATTACHED PACKING ACCESSORIES ............................................123
APPENDIX C PRINCIPLE DIAGRAM OF AC/DC DISTRIBUTION..............................................124
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1. System Overview
1.1 Introduction The ZXDU500 500A combined power supply system is one of the products of the 50A
series combined power supply for communications, which is newly developed by ZTE
Corporation. As an intelligent, unattended power supply system, it employs the
internationally advanced rectifier conversion technology and can be widely applied to
various switching equipment, microwave communications, mobile base stations, and
optical fiber transmission systems.
ZXDU500 500A uses two kinds of standard cabinets with the heights of 2m and 1.6m.
The configurations and functions of the two kinds of cabinets are completely the same.
We take the cabinet of 2m as the example in this manual for illustrations.
1.2 Performance & features The performance and features of the ZXDU500 500A combined power supply system
are as follows:
1. Tracing the latest trends of communication power supply technologies developed
internationally, using the advanced power supply control technology and
components;
2. The advanced modularized design and automatic current equalizing technology
enable the system capacity to expand smoothly in the N+1 redundant mode;
3. With perfect electromagnetic compatibility, minimum electromagnetic radiation,
and minimum surge current at system startup;
4. The system is featured by the fully intelligent design, configured with centralized
monitoring unit, and designed with telemetry, telesignaling and telecontrol
functions. Besides, the computerized management enables unattended
management via communication with the remote central monitoring center. The
feature is in compliance with the demand of contemporary communication
technology development;
5. With the power supply control technology effectively combined with computer
ZXDU500 500A Combined Power Supply System User’s Manual
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technology, various parameters of the rectifier and AC/DC power distribution
can be monitored and controlled in real time;
6. The system employs three-phase electric grid input or single-phase voltage input,
with a wide range of input voltages (80VAC ~ 300VAC), and is applicable to
regions with unstable power supply;
7. With mains input breakdown, the batteries will provide emergency power supply;
mains/generator automatic switching function is also provided;
8. Flexible configuration: up to ten rectifiers may be configured as required;
9. Automatic battery management: it powers communications equipment in
full-parallel float charging mode. The monitoring unit automatically measures
the battery charging/discharging current and controls the rectifier of
float/equalizing charging to the battery;
10. Two-stage power shutdown: when the system switches to battery power supply,
there will be audible and visible alarms; the loads are shifted off in two batches
according to their different degrees of importance. When the battery voltage is
lower than the first-stage power shut-down voltage, it gives audio and visual
alarms and cuts off one batch of loads; when the battery voltage is lower than
the second-stage power shut-down voltage, it gives audio and visual alarms and
cuts off another batch of loads, in this way, it is guaranteed that the most
important loads work a comparatively longer time;
11. The system adopts the multilevel lightning-proof technology, ensuring the high
reliability of the overall system;
12. Multiple AC auxiliary outputs are provided. Besides, DC emergency illumination
is supplied with AC power supply down;
13. When a fault occurs, the supervision module will give audio and visual alarms;
besides, it will send alarms to the remote central control room; at the same time,
it will call the pager number via the automatic station and leave messages;
14. The monitoring unit uses LCD to display the system information in
English/graphic mode. Meanwhile, it can detect multiple environmental
parameters such as the environment temperature, humidity, access control, and
flooding;
Chapter 1. System Overview
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15. Flexible power distribution mode: upward or downward drop line can be
configured as per customers’ demand;
16. It has a drawer structure, easy for transportation, installation, and maintenance;
17. The system has high reliability, with MTBF≥105h;
18. Brandnew architecture design, convenient for maintenance and capacity
expansion; ultra-small design for rectifier, with high power density.
1.3 Man-machine interaction 1. Provides users with information and operation interfaces using the LCD and
keyboard of the monitoring unit;
2. Connected via RS232 interface with near-end PCs, by whose monitoring software
the power supply system operation and maintenance can be performed;
3. Connected with remote computers via Modem or ZTE’s signal conversion
modules (SCM) for remote monitoring.
1.4 System performance indexes 1. AC input
(1) Voltage: 3-phase 5-wire system, the range of the input voltage is 80VAC ~
300VAC;
(2) Frequency: 45Hz~65Hz;
(3) Current: ≤100A;
(4) Power factor: ≥0.99;
(5) Lines of AC input: one or two. When there are two lines of input, they can be one
line of mains and one line of generator or two lines of mains. They can be
switched manually or automatically and have mechanic interlocking for manual
switchover, or electric and mechanic interlocking for automatic switchover; the
standard configuration is single air switch input;
(6) AC standby output: the standby output can be configured according to users’
demands. At most 16 air switch positions can be configured with the capacity
of 6A ~ 63A; no AC standby output tributary is configured for standard ones.
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2. DC output
(1) Voltage
The float charging voltage is 53.5V, and the equalized charging voltage is
56.4V (both can be directly adjusted via the monitoring unit or be fine tuned on
the rectifier panel);
(2) Current: 500A (configured with ten 50A rectifiers);
(3) Efficiency≥92%;
(4) Broadband psophometric noise
≤50mV (3.4kHz ~ 150kHz);
≤20mV (0.15MHz ~ 300MHz);
(5) Psophometrically weighted noise: < 2mV;
(6) System audible noise: <55dBa;
(7) Lines of load: maximum configuration is 15 fuses or 31 air switches;
(8) Lines of batteries: maximum configuration of 3 standby battery packs, with
capacity of 400A;
(9) Security specifications: in compliance with IEC950 standards;
3. Dimension: 2000mm (H)×600mm (W)×600mm (D) or 1600mm (H)×600mm
(W)×600mm (D).
4. Ambient conditions
(1) Temperature: -5℃~+40℃;
(2) Relative humidity: 10%-90%.
1.5 Cautions The ZXDU500 500A combined power supply system can be configured with three
lines of batteries at most, in which, the third line of battery is available only upon
user’s demand. Two lines of battery are the standard configuration.
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2. Structural Features & Work Principles
2.1 Overall structure and configuration
2.1.1 Overall structure
The ZXDU500 500A combined power supply system is composed of the AC power
distribution unit, rectifier unit, DC power distribution unit, monitoring unit, etc. Both
the rectifier and the monitoring unit employ the drawer structure, the outer appearance
of the cabinet is shown in Fig. 2-1.
Fig. 2-1 Appearance of cabinet for ZXDU500 500A combined power supply system
Monitoring unit
Rectifier
AC distribution unit
DC distributionunit
ZXDU500 500A Combined Power Supply System User’s Manual
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Its structure without the front door of AC/DC distribution parts is shown in Fig. 2-2;
and that without the rear door is shown in Fig. 2-3.
Fig. 2-2 Front view of cabinet for ZXDU500 500A combined power supply system (without front
door)
Chapter 2. Structural Features & Work Principles
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Fig. 2-3 Back view of cabinet for ZXDU500 500A combined power supply system (without back
door)
ZXDU500 500A Combined Power Supply System User’s Manual
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2.1.2 Basic configuration
The basic configurations of the ZXDU500 500A combined power supply system are
listed in Table 2-1.
Table 2-1 Basic system configuration
Unit I/O Configuration Remarks
AC input
Single air switch input, double air switch input, double contactor input etc. Input can be 1 line of mains and 1 line of generator or two lines of mains. The 2 lines of input can be switched manually or automatically.
Rated current: 95A;
Rated voltage: 380V;
Standard configuration: Single air switch input.
AC output Maximum configuration: 16P (16 air switch positions), with capacity of 6A ~ 63A.
The standby AC output shunt is configured on the user’s demand. It is unavailable in the standard configuration.
AC power distribution unit
Emergency lighting
The emergency lighting will be configured when required by users, and the configuration is an air switch of 6A~63A capacity.
No emergency lighting in the standard configuration.
Battery input
The system supports three lines of batteries, the third line of battery is configured on the user’s demand.
Standard configuration: 2 lines of 400A fuse protectors.
DC power distribution unit
DC output
The configuration is highly flexible, designed with three combinations of fuse, air switch and circuit-breaker+air switch. Max. config. of fuse breaker: 15 lines 6A to 160A shunt output; among them, the first-stage power shutdown: 5 lines maximally; Second-stage shutdown: 10 lines maximally.
The fuse protector combination under the standard configuration: 2 lines of 160A, 2 lines of 100A, 1 line of 63A, and 1 line of 32A.
Among them:
First-stage shutdown: 1 line of 160A, and 1 line of 100A;
Second-stage shutdown: 1 line of 160A, 100A, 63A and 32A respectively.
Rectifier
ZXD2400 (V3.0)
Input: AC 220V
Output:
DC 48V/50A
Full config: 10 modules Max. DC output capacity: 500A
Monitoring unit Provide the Modem with 12V power supply
1 ZXDU300 (V3.0) CSU monitoring unit
Chapter 2. Structural Features & Work Principles
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2.2 Introduction to system principles The ZXDU500 500A combined power supply system is composed of AC power
distribution unit, rectifier unit, DC power distribution unit, monitoring unit, etc. The
rectifier model is ZXD2400 (V3.0) with the rated output of 48V/50A. With N+1
backup configuration of the rectifier, the system can be expanded smoothly from 100A
to 500A. The AC/DC power distribution unit of the system also provides multiple
AC/DC outputs to cater for users’ different demands.
The principle block diagram of the ZXDU500 500A combined power supply system is
shown in Figure 2-4.
Mains input
Disel generator
ZXD2400 (V3.0) rectifier
Battery pack I
Battery pack II
Load pack I
Load pack II
Wor
king
gro
und
Lightningprotectio
n unit
Monitoring unit
MODEM PSTN MODEM
Remote-end PC
Near-end PC
AC input
AC distribution AC/DCconversion
DC distribution
Centralizedsupervision
RS232
RS232
RS232
Phone line Phone line
Fig. 2-4 Principle block diagram of ZXDU500 500A combined power supply system
AC input is provided to the rectifier by way of the AC power distribution unit. With the
three-phase AC input for the system and single-phase input for the rectifier, it is
recommended that the rectifiers be evenly connected with the three-phase input voltage
to equalize the input load of the 3-phase AC input. For the phase sequence of the
rectifier within the cabinet, please refer to Fig. 3-12. Besides, when there is no
three-phase power supply, single-phase power supply may be employed, and the three
phases of input are to be connected in parallel.
The rectifier output works in the parallel mode. The output is collected via the copper
busbar first, and then enters the DC power distribution unit. Within the system, 2 to 10
rectifiers can be flexibly configured according to the user’s requirements.
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The DC power distribution unit provides at most three standby battery interfaces and
multiple DC output interfaces (tailored in a certain range of the interface quantity and
capacity according to the user’s requirements).
The ZXDU500 500A combined power supply system is controlled by the monitoring
unit, which will work according to the internally preset parameters or customized
parameters. The user command may be delivered via the keyboard of the monitoring
unit or the background PC; the system working status and parameters can be displayed
on either the LCD of the monitoring unit or the background PC. The combined power
supply system may be connected with the local near-end PC via serial ports to realize
local monitoring; or it may employ MODEM or other transmission channels (such as
auxiliary channels of the microwave equipment and optical transmission equipment) to
realize centralized monitoring. Meanwhile, the system may conveniently cooperate
with the environment and power monitoring systems of other manufacturers.
2.3 AC power distribution unit
2.3.1 Working principles
The working principle of the AC power distribution unit is shown in Fig. 2-5. Refer to
Appendix C for the electrical working principle.
AC
input switchover unit
Rectifier distribution unit
AC transmitter
N
PE
Mains II or diesel
generatorM
ains IMonitoring uit
Level Clightning
protection unitStandby AC
output
Fig. 2-5 Working principle of AC power distribution unit
Chapter 2. Structural Features & Work Principles
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The AC power distribution unit performs the access and switching of the mains supply,
provides AC power supplies for rectifiers, furnishes the monitoring unit with sampling
output of AC voltage and current. Meanwhile, it possesses standby AC output and
lightening-proof functions.
2.3.2 Structure of AC power distribution unit
The AC power distribution unit is under the cabinet. At the front of the unit are AC
input switch, lightning arrester and switch, rectifier input switch, contactor protection
unit, AC transmitter, etc.; at the back of the unit are AC input line connection terminal,
zero line copper bus, grounding copper bus and AC standby input air switch; the output
of emergency lighting is 1 line of fuse located under the battery fuse at the back of the
cabinet.
The structure of AC power distribution unit is illustrated in Fig. 2-6.
Rectifier inputswitch
General switch forrectifier input
AC input air switch AC transmitter
Front baffle ofAC distribution unit
Level C lightningprotection unit
AC power distribution unit (front view)
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Rear baffle for ACdistribution Zero line busbarGrounding busbar
AC input connectionbusbar
AC power distribution unit (back view)
Fig. 2-6 Structure of AC power distribution unit
The AC input switching unit has three input modes: single air switch, dual air switch
and dual contactor.
1. Single air switch input: the system connects 1 line of mains supply, or the
conversion of 2 lines of mains supplies is fulfilled in the AC power distribution
board outside the system. The system AC input is configured with one air
switch.
2. Dual air switch input: supports 2 lines of AC input (users can use 2 lines of mains
supply or 1 line of mains supply and 1 line of diesel generator), the two lines of
AC input are handed over manually. The handover is performed with two air
switches with mechanically interlocking devices. When Mains 1 is normal,
Mains 1 powers the system on while Mains 2 (or the diesel generator) is
standby; when Mains 1 is cut off, you can switch to Mains 2 (or the generator)
manually. During the handover interval, the backup battery provides power
supplies for the system.
3. Dual contactor input: supports 2 lines of AC input (users can use 2 lines of mains
supply or 1 line of mains supply and 1 line of diesel generator according to the
actual needs), the 2 lines of AC input are handed over manually. During
handover, 2 AC contactors with mechanically interlocking devices and control
circuits perform the sampling and handover of 2 lines of input. When Mains 1
Chapter 2. Structural Features & Work Principles
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is normal, it powers the system on while Mains 2 (or the generator) is standby;
when Mains 1 is cut off, the system can switch to Mains 2 (or the generator)
automatically.
Users may choose one of the three input modes in the purchase contract; if not
specified, the standard configuration is the single air switch input.
The standby AC output can be configured according to users’ demands. At most 16P
(16 monopole air switch positions) can be configured with the capacity of 6A ~ 63A.
If not specified by the user, the standard AC output shunt is not configured.
The emergency lighting will be configured when required by users, with the fuse of
6A~63A. The fuse is under the fuse of the battery pack at the back of the cabinet. No
emergency lighting shunt is available in the standard configuration.
The normal configuration of the ZXDU500 500A combined power supply system
employs the upper outlet mode. Of course, the lower outlet mode can be used on users’
demand. In lower wiring mode, at the upper part of the cabinet are AC power
distribution units; in upper wiring mode, at the lower part of the cabinet are DC power
distribution units. The upper outlet mode is adopted for the standard system
configuration.
When the system rectifiers are not fully configured, they shall be evenly connected
with the three-phase input, with basically the same number of rectifiers connected to
each phase to achieve the balance of the three-phase input.
The ZXDU500 500A combined communications power supply system has a high
lightning-proof capability. The lightning arrester has a display window. When the
window is green, it indicates that the arrester is normal; when the window is red, it
indicates that the arrester is out of service and needs replacing. The supervision unit
monitors the lightning arrester. When it is faulty, the supervision unit will alarm the
maintenance personnel to replace it. When doing so, the power of the arrester has not
to be cut off, directly plug-in/plug-out it instead.
Note: Check the lightning arresters carefully before and after the rainy season
every year and after each lightning.
ZXDU500 500A Combined Power Supply System User’s Manual
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2.4 Rectifier The rectifier unit of the ZXDU500 500A combined power supply system employs the
ZXD2400 (V3.0) 50A switched rectifier. For detailed information, please refer to
ZXD2400 (V3.0) 50A Switched Rectifier User’s Manual.
The outer appearance of the rectifier is shown in Fig. 2-7.
Fig. 2-7 Outer appearance of ZXD2400 (V3.0) 50A rectifier
The front panel and rear panel of the rectifier are shown in Fig. 2-8.
Fig. 2-8 Front panel and rear panel of ZXD2400 (V3.0) 50A rectifier
Chapter 2. Structural Features & Work Principles
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The description of the front panel and rear panel of the rectifier is listed in Table 2-2.
Table 2-2 Description of the front panel and rear panel of the rectifier
S.N. Part name Functionality description
1 Plastic panel
2 Mechanical locking switch Used to fix the rectifier, without electrical connection
function.
3 Pinch handle Used to load, unload and carry the rectifier.
4 Shutter Air inlet
5 Output current test hole
The signal measured here is the voltage signal, which has
the linear relationship with the current signal as 10A
corresponding to 1.5V
6 Output voltage test hole The tested signal here is the output voltage signal of the
rectifier, and no conversion is needed.
7 Input indicator Green indicates that the input is normal, no indication for
other cases.
8 Output indicator Green indicates that the output is normal, no indication for
other cases.
9 LED indicators to display the output
current Composed of 10 LEDs, each stands for output current of 5A.
10 Current-limiting indicator Yellow indicates that the rectifier is in the current-limiting
status, no indication for other cases.
11 Alarm indicator Red indicates that the rectifier is in the alarm status, no
indication for other cases.
12 Common ground for the output
voltage/current test
13 Fine adjustment potentiometer of the
output voltage
The output voltage of the rectifier decreases by the
clockwise adjustment, and increases by the counterclockwise
adjustment.
14 Rear panel
15 Ventilation holes To ensure the heat dissipation, no barriers can be placed in
front of ventilation holes.
16 Integrated input/output socket
The integrated input/output socket at the back panel of the rectifier as shown in Fig.
2-8 realizes AC input, DC output and control of the rectifier. The pins of the rectifier
socket are shown in Fig. 2-9.
ZXDU500 500A Combined Power Supply System User’s Manual
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Fig. 2-9 Interface of ZXD2400 (V3.0) 50A switched rectifier
Definition of pins of the integrated input/output socket is shown in Table 2-3.
Table 2-3 Definition of pins of the input/output interface of the rectifier
S.N. Signal Signal description
2 Protection earthing (PE) wire: Directly connected to the enclosure via conductor
7 AC input line N: corresponding to XJ2 of MAIN board
9 AC input line L: corresponding to XJ1 of MAIN board
22 REMOTE
Turn-off signal: the signal is mainly used in the remote ON/OFF control of the
switched rectifier by the system; when high level is inputted, the rectifier is turned
off (level of 5V); in case of input low level or high resistance, the rectifier is turned
on
23 ALARM
Low-resistance output: corresponds to the start-up process, internal faults or alarms,
and over-temperature statuses of the rectifier.
High-resistance output: corresponds to the normal working status
24 COM Monitors the system control ground
25 ON-LINE On-position signal for rectifier: directly connected to the COM signal on the MAIN
board
28 GND DC-DC control ground
29 PWM Input signal: requiring a pulse signal with amplitude of 5V
30 READY Input signal: the rectifier is started when short circuit happens between the input
signal and the GND. It is used to realize the hot swapping function.
31 SHARE-BUS Equalizing bus line: bi-directional signal
26 DC output charging pin of 48V+: corresponding to XJ4 of the MAIN board
34 DC output of 48V-: corresponding to XJ5 of MAIN board
35 DC output of 48V+: corresponding to XJ3 of MAIN board
Chapter 2. Structural Features & Work Principles
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2.5 DC power distribution unit The DC power distribution unit implements functions of DC load allocation, and
access of 2 lines of battery. (A third line can be connected on user’s demand.)
2.5.1 Working principles
The rectifier output employs parallel connection and enters the DC distribution unit via
the copper busbar.
The DC power distribution unit provides the access of two lines of battery (or
expanded to three lines) and no more than 31 lines of the DC load output (DC output
lines and capacities can be adjusted according to users’ demands). A 400A fuse is
configured in the battery’s return circuit to guard against the battery damage owing to
the short-circuit.
Each group of DC output is under the control of one DC contactor.
The whole system features the two-stage power-down, the load shunt in the front of the
cabinet is the load group of the second-stage power-down, and that in the back of the
cabinet is the load group of the first-stage power-down. The system will shift off the
loads in two stages according to the voltages set by the user and thus prolong the
working duration of important loads; meanwhile, it can switch off all loads when the
battery has been discharged to the maximum, so as to protect the battery. Both the load
and battery output ends are attached with fuses or air switches for protection.
The working principle of the DC power distribution unit is shown in Fig. 2-10. Refer to
Appendix C for the electrical working principles.
ZXDU500 500A Combined Power Supply System User’s Manual
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Output current sensor
Battery current sensor
Battery current sensor
DC contactor 1
DC contactor 2
Group 1 of load output (max. config. of 5 lines of fuses or 9lines of air switches)
Group 2 of load output (max. config. of 10 lines of fuses or22 lines of air switches)
Working ground -48V
Battery pack 2
Battery pack 3
Battery current sensor
Battery pack 1
Fig. 2-10 Principle diagram of DC power distribution unit
2.5.2 Structure of DC power distribution unit
At the upper front part of the cabinet, the DC power distribution unit has the DC output
load shunt, and has the DC output load shunt, battery fuse shunt and emergency
lighting fuse shunt at the upper rear part of the cabinet.
The DC output can be of three combination modes: fuses, air switches, and fuses plus
air switches. It can be configured according to users’ demands. If not specified,
standard configuration is employed, i.e., fuse combination.
The system’s DC power distribution features the two-stage power-down, the load shunt
in the front of the cabinet is the load shunt of the second-stage power-down, and that in
the back of the cabinet is the load shunt of the first-stage power-down.
1. Fuses combination
The load output shunts of the DC power distribution are all fuses. The fuse
combination is the standard configuration of the system, and the specific
configuration is listed in Table 2-4.
Chapter 2. Structural Features & Work Principles
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Table 2-4 The standard configuration of the DC load output
Standard configuration
160A 2 lines
100A 2 lines
63A 1 line DC load output
32A 1 line
For the first-stage shutdown: 1 line of 100A and 160A respectively;
Second-stage shutdown: 1 line of 160A, 100A, 63A and 32A respectively.
The fuse combination of DC power distribution is shown in Fig. 2-11.
Combination of second-stage power shutdown
Combination of first-stage power shutdown
Fig. 2-11 Fuse combination of DC power distribution
The capacity of the fuse combination may be chosen from 6A ~ 160A on users’
demands. Under the circumstances of no change of DC output structure, the
maximum configuration of the fuse combination can be expanded from 6 lines
ZXDU500 500A Combined Power Supply System User’s Manual
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to 15 lines of tributary output ranging from 6A to 160A; Second-stage
shutdown: 10 lines maximally; first-stage shutdown; 5 lines maximally (another
7 lines can be added by adding more structured components.)
The DC power distribution unit at the back of the cabinet has two battery shunts
(max. 3 shunts), each of which connects a 400A fuse. If the emergency lighting
shunt is configured, its fuse is in the DC power distribution unit at the back of
the cabinet.
2. Air switch combination
The DC load shunt outputs are all air switches.
According to the conditions of the structural parts, air switch combination can
be composed of 4, 8, 9, and 12 to 31 lines; the capacity can be selected between
6A-63A; second-stage shutdown: 22 lines maximally; first-stage shutdown: 9
lines maximally (another 18 lines can be added by adding more structural
parts.)
3. Mixed assembly of fuse and air switch
Some shunts of the DC output combination are fuses, while the others are air
switches. Various combinations of fuses and air switches can be configured
upon users’ demands.
The DC power distribution unit of the system can be configured flexibly; and
an optimal configuration can be made according to users’ requirement.
2.5.3 Functional characteristics
1. Protection function
(1) Battery loop, load output loop and emergency lighting loop are all under the
protection of fuses or air switches;
(2) There are alarms for system output over-/under-voltage; and alarms for broken
battery fuse, broken fuses for lines of loads or broken air switches as well;
(3) Battery over-discharge protection and second-stage shutdown function.
2. Others
(1) Two lines of battery can be connected and a third line too if necessary;
Chapter 2. Structural Features & Work Principles
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(2) Three lines of battery current and total load output current detection;
(3) One line of emergency lighting output (if requested by the user).
3. Grounding
There is a grounding busbar in the AC power distribution part at the back of the
cabinet, and a copper grounding bolt (no less than M8) at the base of the cabinet.
During installation, connect the grounding bolt to the user’s grounding busbar
with a copper wire.
2.6 Supervision unit
2.6.1 Overview
The supervision unit is responsible for the comprehensive management of AC power
distribution, DC power distribution, rectifier sets and battery of the system. The
supervision unit collects running data and monitors the working status of the system on
a real time basis. When the system fails, the supervision unit gives audible and visual
alarms and provides necessary protection measures. The profile of the supervision unit
is illustrated in Fig. 2-12.
Text
Fig. 2-12 Profile of supervision unit
The LCD and LED indicators on the panel of the supervision unit can display the
system’s output current, output voltage, battery current and all kinds of alarm
information. In addition, necessary parameters can be set through the keyboard on the
panel to fulfill necessary control. The running data and working status of the system,
instead of just being reflected locally, can also be reported to the upper-level
supervision unit through transmission of a certain mode.
ZXDU500 500A Combined Power Supply System User’s Manual
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The supervision unit also receives commands from the upper-level machine, so as to
query and control the system to realize the “3-tele” functions. The supervision unit
adopts English interfaces, and it can provide a visualized display of the working status
of each part of the power supply system. Indicators show the working status of each
part: power supply working status and alarm status.
When fault occurs to the system, both the alarm indicator and the buzzer generate
audible and visual alarm signals with the instructive alarm information displayed on
the LCD.
The power supply system can work without the supervision unit, in which case,
however, it will lose the “3-tele” function and the battery management function. Then,
in the system, the battery stays in the float charging status. Close attention must be paid
to the discharging of the battery.
2.6.2 Structure
The supervision unit is composed of seven boards connected with flat cables. The
seven boards are ZXDU150-CVT, ZXDU300-LED, ZXDU300-RLY,
ZXDU300-BACK, ZXDU45-PMS, ZXD-CSU-POWER and ZXDU300-EMB.
1. Front panel of the supervision unit
The front panel is composed of LCD, buttons and indicators. The schematic
diagram of the front panel is illustrated in Fig. 2-13, the indicators and buttons
are illustrated in Fig. 2-14, while the indicator instructions are shown in Table
2-5.
Fig. 2-13 Front panel of supervision unit
Chapter 2. Structural Features & Work Principles
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Power
Run
Alarm
Com
Reset
PgDn
EscPgUp
Enter
Fig. 2-14 Indicators and buttons on the front panel of the supervision unit
Table 2-5 Indicator instructions on the front panel of the supervision unit
Indicator Color Description
Power Green When the indicator is on, it means that the power
supply of the supervision unit is OK.
Run Green When the indicator flashes, it means that the
supervision unit is in the working status.
Alarm Red When the indicator is on, it means that alarms occur.
Com Yellow When the indicator flashes, it means that
communication is under way.
The “Reset” is a hidden button hole, in which is the Reset key. There are four
buttons in the communications unit: PgUp, PgDn, Esc and Enter, through which
information can be viewed and parameters can be set.
2. Back panel of the supervision unit
The schematic diagram of the back panel of the supervision unit is illustrated in
Fig. 2-15. There is description of the definition of each socket on the housing of
the device.
X11 X10
X6
X16
X17
X14
X12
X15
X19X8 X9 X7
X13 X5
FUSEPOWER
MODEM MODEM 48V
Fig. 2-15 Schematic diagram of the back panel of the supervision unit
Definition of each socket on the back panel of the supervision unit is shown in
ZXDU500 500A Combined Power Supply System User’s Manual
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Table 2-6.
Table 2-6 Definition of each socket on the back panel of the supervision unit
S.N. Socket No. Name Wire No. and the corresponding signal
Connector requirements
Remarks
1 X5: RS485/422 communications interface
1: B 485B line 2: A 485A line 3: Y 422Y line 4: Z 422Z line
4-pin 3.81 socket Communications port
2 X6 RS232 communications interface
1: 1: DCD data carrier detection 2: 2: RU receive data 3: 3: TU transmit data 4: 4: DTR data terminal ready5: GND1 communications signal ground 6: DSR data set ready 7: RTS request to send 8: CTS clear to send 9: RING ring
9-pin D-type socket Communications port
3 X7 Interface of battery temperature sensor 1
1: +12V 2: T1
2-pin 3.81 socket
4 X8 Interface of battery temperature sensor 2
1: +12V 2: T2
2-pin 3.81 socket
5 X9 Interface of battery temperature sensor 3
1: +12V 2: T3
2-pin 3.81 socket
6 X10 Relay output interface
1, 2: +5V power supply 3~10: signal lines of relays 1~8
10-pin flat cable socket
Make a connection from the BACK board to the relay output board
7 X11 Control alarm relay contact interface
1, 2: 1st stage power shutdown control alarm relay contact 3, 4 : 2nd stage power shutdown control alarm relay contact 5, 6 : emergency lighting control alarm relay contact 7,8,9: control relay 1’s NC, NO and COM 10, 11, 12: control relay 2’s NC, NO and COM 13, 14, 15: not defined
15-pin 3.81 socket Connect from the BACK board to the first-stage power-down contact, 2nd-stage power-down contactor or backup
Chapter 2. Structural Features & Work Principles
----25----
Table 2-6 (Continued)
S.N. Socket No. Name Wire No. and the
corresponding signal
Connector
requirements
Remarks
8 X12 Environment
monitoring
interface
1: +12V power supply output 2: Input of smog detection
signal 3: Input of flooding detection
signal 4: Input of access control
detection signal 5: Input of access control
detection signal 6: Input of glass broken
detection signal 7: Input of ambient temperature
detection signal 8: Input of humidity detection
signal 9: -12V power supply output 10: -12V power supply output 11: Analog GNDA 12: not defined 13: Digital GND 14: +5V power supply output 15: not defined 16: not defined
16-pin flat cable
socket
Connect with EMB
board
9 X13 Input
interface of
alarm relay
contact
1: RLY1 input alarm relay
contact 1 2: Digital GND 3: RLY2 input alarm relay
contact 2 4: Digital GND 5: RLY1 input alarm relay
contact 3 6: Digital GND 7: RLY2 input alarm relay
contact 4 8: Digital GND
8-pin 3.81 socket Input interface of
alarm relay contact
ZXDU500 500A Combined Power Supply System User’s Manual
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Table 2-6 (Continued)
S.N. Socket No. Name Wire No. and the corresponding signal
Connector requirements
Remarks
10 X14 Rectifier communications interface 1
1: EXT1 rectifier 1 in-position signal - U1~U25 2: ALARM1 rectifier 1 alarm signal - U1~U23 3: REMOTE1 rectifier 1 remote control signal - U1~U22 4: EXT2 rectifier 2 in-position signal – U2~U25 5: ALARM2 rectifier 2 alarm signal – U2~U23 6: REMOTE2 rectifier 2 remote control signal – U2~U22 7: EXT3 rectifier 3 in-position signal – U3~U25 8: ALARM3 rectifier 3 alarm signal – U3-U23 9: REMOTE3 rectifier 3 remote control signal – U3~U22 10: EXT4 rectifier 4 in-position signal – U4~U25 11: ALARM4 rectifier 4 alarm signal – U4~U23 12: REMOTE4 rectifier 4 remote control signal – U4~U22 13: EXT5 rectifier 5 in-position signal – U5~U25 14: ALARM5 rectifier 5 alarm signal – U5~U23 15: REMOTE5 rectifier 5 remote control signal – U5~U22 16: PWM signal – U1~U29 – U2~U29 – U3~U29 – U4~U29 – U5~U29 17: GND – U1~U24 –U2~U24 –U3~U24 – U4~U24 – U5~U24 18: GND idle
18-pin 2.54 socket to rectifier socket
Connect from the BACK board to the communications interface board of rectifiers 1~5
Chapter 2. Structural Features & Work Principles
----27----
Table 2-6 (Continued)
S.N. Socket No. Name Wire No. and the corresponding signal
Connector requirements
Remarks
11 X15 AC signal detection interface
1: Input of AC phase A current 2: AC transducer power supply GND 3: AC transducer -12V power supply 4: AC transducer +12V power supply 5: Input of AC phase A voltage 6: Input of AC phase B voltage 7: Input of AC phase C voltage 8: Input of the mains input switch status 9: Input of rectifier main switch status 10: Input of lightning-proof circuit status 11: Input of AC output switch status
11-pin 3181 socket Connect from the BACK board to AC transducer and AC distribution unit
12 X16 DC detection signal interface 1
1: Status of DC output fuse 15 2: Status of DC output fuse 14 3: Status of DC output fuse 13 4: Status of DC output fuse 12 5: Status of DC output fuse 11 6: Status of DC output fuse 10 7: Status of DC output fuse 9 8: Status of DC output fuse 8 9: Status of DC output fuse 7 10: Status of DC output fuse 6 11: Status of DC output fuse 5 12: Status of DC output fuse 4 13: Status of DC output fuse 3 14: Status of DC output fuse 2 15: Status of DC output fuse 1
15-pin 3.81 socket Connect from the BACK board to DC distribution
13 X17 DC detection signal interface 2
1: Status of DC output fuse 16 2: Status of DC output fuse 17 3: Status of DC output fuse 18 4: Status of DC output fuse 19 5: Status of DC output fuse 20 6: Voltage check of battery 1 7: Voltage check of battery 2 8: Voltage check of battery 3 9, 10: Battery 1 current divider +, - 11, 12: Battery 2 current divider +, - 13, 14: Battery 3 current divider +, - 15, 16: Load current divider +, -17, 18: monitoring power input terminals
18-pin 3.81 socket Connect from the BACK board to DC distribution
ZXDU500 500A Combined Power Supply System User’s Manual
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Table 2-6 (Continued)
S.N. Socket No. Name Wire No. and the corresponding signal
Connector requirements
Remarks
14 X19 Rectifier communications interface 2
1: EXT6: Rectifier 6 in-position signal – U6~U25 2: ALARM6: Rectifier 6 alarm signal – U6~U23 3: REMOTE6: Rectifier 6 remote control signal – U6~U22 4: EXT7: Rectifier 7 in-position signal – U7~U25 5: ALARM7: Rectifier 7 alarm signal – U7~U23 6: REMOTE7: Rectifier 7 remote control signal – U7~U22 7: EXT8: Rectifier 8 in-position signal – U8~U25 8: ALARM8: Rectifier 8 alarm signal – U8~U23 9: REMOTE8: Rectifier 8 remote control signal – U8~U22 10: EXT9: Rectifier 9 in-position signal – U9~U25 11: ALARM9: Rectifier 9 alarm signal – U9~U23 12: REMOTE9: Rectifier 9 remote control signal – U9~U22 13: EXT10: Rectifier 10 in-position signal – U10~U25 14: ALARM10: Rectifier 10 alarm signal – U10~U23 15: REMOTE10: Rectifier 10 remote control signal – U10~U22 16: PWM signal: U6~U29—U7~U29—U8~U29—U9~U29—U10~U29 17: GND: U6~U24 – U7~U24 – U8~U24 – U9~U24 – U10~U24 18: GND idle
18-pin 2.54 socket to rectifier socket
Connect from the BACK board to the communication interfaces of rectifiers 6~10
Chapter 2. Structural Features & Work Principles
----29----
3. Environment monitoring board ZXDU300-EMB
The environment monitoring board ZXDU300-EMB (EMB for short below) is
responsible for collecting multiple environmental parameters where the
combined power supply system is located, including ambient temperature,
ambient humidity, smog, door magnet, flooding, infrared (door control) and
glass broken. This board is optional and can be configured on the user’s
demand.
The schematic diagram of the electrical interface of EMB is illustrated in Fig.
2-16.
Temperature Accesscontrol Waterlogging Smog
X5 X6 X8
X9
X1
Envi
ronm
enta
l mon
itorin
g bo
ard
X7 X2 X3 X4
X10
Door magnetBreaking glass Ambienttemperature
Fig. 2-16 Position of the electrical interface of EMB
ZXDU500 500A Combined Power Supply System User’s Manual
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Pin definitions of sockets of EMB are shown in Table 2-7.
Table 2-7 Definitions of sockets of EMB
S.N. Line signal Name Leading wire No. and the corresponding signal
Connector requirements Remarks
1 EMB-X1 Input interface
Interconnect with X12 of the monitoring unit; for the pin definition, refer to the content related to X12 in Table 2-6
16-pin flat cable socket
Interconnect with X12 of the monitoring unit
2 EMB-X2 Infrared (access control) interface
1: +9V +9V power supply 2: GND Digital GND 3: DOOR access control pulse signal
3-pin 3.81 socket
3 EMB-X3 Flooding sensor interface
1: CTRL connect to resistance 2: VCC +5V power supply 3: GND Digital GND 4: Water flooding signal
4-pin 3.81 socket
4 EMB-X4 Smog sensor interface
1: +12V +12V power supply 2: SMOIN smog current signal
2-pin 3.81 socket
5 EMB-X5 Glass broken sensor interface
1: +12V +12V power supply 2: GND Digital GND 3: BOLI glass broken signal 4: GND Digital GND
4-pin 3.81 socket
6 EMB-X6 Door magnet interface 1: DOOR2 door magnet signal 2: GND Digital GND
2-pin 3.81 socket
7 EMB-X7 Ambient temperature sensor interface
1: +12V +12V power supply 2: T1 Temperature signal
2-pin 3.81 socket
8 EMB-X8 Environment humidity sensor interface
1: VCC +5V power supply 2: SHIDU humidity signal3: GND Digital GND
3-pin PCB socket
Directly inserted to PCB
9 EMB-X9 Short-circuit bar
X9 needs to be shorted while glass broken sensor is not connected.
10 EMB-X10 Short-circuit bar
X10 needs to be shorted while door magnetic sensor is not connected.
Chapter 2. Structural Features & Work Principles
----31----
4. Monitoring unit relay output board ZXDU300-RLY
Alarm signals of the system can be converted to alarm relay contact signals
through the relay output board ZXDU300-RLY (RLY for short below) of the
monitoring unit. RLY provides eight alarm relay contact signals for the output
of alarm signals. The alarm signal of each alarm relay contact can be defined
through “System parameter setting” of the monitoring unit. The schematic
diagram of the alarm relay contact output interface position of the RLY board is
illustrated in Fig. 2-17.
ZXDU300 RLY
X1
X2 X3
X4 X5
K1 K2 K3 K4 - NO - K5 K6 K7 K8
K1 K2 K3 K4 - NC - K5 K6 K7 K8
Fig. 2-17 Interface position of RLY board
(1) Application cases
Instead of the full real-time data of the power supply, the user needs only to
know a few simple alarm parameters. Alarms of the power supply system can
be reported through other devices.
(2) Hardware architecture
The RLY board is composed of eight small relays, whose action is controlled by
the monitoring unit. The relays provide eight output contacts in the mode of
alarm relay contacts, each contact having a normally-on and a normally-closed
contact (respectively marked as NO and NC). The normally-on contact and
normally closed contact are of two different groups of the same relay, without
electrical connection between them. Each contact provides an alterable output
ZXDU500 500A Combined Power Supply System User’s Manual
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status to indicate the specific alarm information. Which contact is to be used is
up to the user.
(3) Hardware installation
The RLY board is on the top of the rack supervision unit. All that has to be done
is connect X10 of the monitoring unit BACK board with X1 of the RLY board
with a 10-core flat cable.
(4) Operations
After hardware installation, power-on and enable the monitoring unit to work
(see Section 4.4). Enter the submenu of “System parameter setting”, move the
cursor to the item “Alarm relay contact corresponding to failure category.”
Setting interface of this item is shown in Fig. 2-18.
Parametersetting
Alarm relay contact corresponding to fault tyupe
Alarm relaycontact 1
Help30
OKMain air switch for rectifier
Fig. 2-18 Wiring of the relay output board
Refer to Section 4.4.6 for the method of setting parameters. In the interface, the
“Main rectifier air switch off” is responsible for setting of alarm type, and there
are altogether 20 types of system alarms available for choice; “Alarm relay
contact 1” is the chosen position for the alarm relay contact, and there are
“Alarm relay contact 1” to “Alarm relay contact 9” for choice. Eight relay
interfaces are on the RLY board, while the remaining one is in the socket X11
of the monitoring unit’s rear panel. Press “OK” after the setting to determine
through which relay the corresponding alarm is to be output. When an alarm
occurs to a relay, the relay will react and the output status changes.
(5) Description of wiring
K1~K8 in Fig. 2-17 respectively correspond to eight relay positions, where NO
in the upper row corresponds to the relay’s normally-on contact while NC in the
lower row, the normally closed contact. For relays adopting two groups of
contacts, there is no electrical connection between the normally-on contact and
normally closed contact. For the wiring, lead out two normally-on signal lines
Chapter 2. Structural Features & Work Principles
----33----
from the normally-on socket position in the upper row or two normally closed
signal lines from the normally closed socket position in the lower row. The
schematic diagram of wiring of the relay output board is illustrated in Fig. 2-19.
ZXDU300 RLY
X1
X2 X3
X4 X5
K1 K2 K3 K4 - NO - K5 K6 K7 K8
K1 K2 K3 K4 - NC - K5 K6 K7 K8
Drop-line socketfor normally-oncontact of relay
K1
Drop-line socketfor normally-off
contact of relay K1
Fig. 2-19 Wiring of the RLY board
2.6.3 Function of the monitoring unit
1. Man-machine interface
The man-machine interface is composed of LCD and buttons. The foreground
adopts English operation interface. Users can, on the man-machine interface,
set the parameters for the system, so as to display the running parameters of
various parts of the system.
2. Communications
The monitoring unit provides RS232 communications interface and can realize
centralized monitoring via Modem or in other modes. It reports on-site data and
status to the background PC and receives control instructions from the
background PC and executes them.
(1) Local supervision and control: provides the standard RS232 interface to connect
with a local PC.
(2) Remote supervision and control: provides the standard RS233 interface and
connects it to the centralized maintenance background via Modem.
ZXDU500 500A Combined Power Supply System User’s Manual
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(3) Communication with the rectifier is fulfilled in the analog mode.
(4) Communications with other monitoring systems: provides RS232 interface.
3. Data collecting and processing
The signals collected and processed are as follows:
(1) AC power distribution unit
The signals to be collected and processed by the AC power distribution unit
include: AC voltage U, V, W phases; AC phase U current; working status of AC
contactor; status of AC input air switch; working status of AC lightning arrester.
(2) DC power distribution unit
The signals to be collected and processed by the DC power distribution unit
include: DC output voltage; 3 lines of battery voltage; 3 lines of battery current;
1 line of general load current; load output fuse or air switch status; battery fuse
status; control of two lines of DC contactors.
(3) Rectifier part
The signals to be collected and processed by the rectifier include: alarm
information of the rectifier; switch control of the rectifier; equalized/floating
charge status control of the rectifier.
4. Alarm management and protective functions
It processes the real-time data according to the user’s configuration. When
anything abnormal happens, alarm will be reported automatically to the
background PC, and the existing faults will be recorded for saving. Users can
interrogate the alarms that happen most recently directly from the monitoring
unit. The monitoring unit can, when any alarm happens, automatically page the
maintenance personnel.
5. Battery management function
Battery management covers two parts:
(1) Battery charging management function
The monitoring unit manages the process of battery charging in two modes, i.e.,
cycled equalized charging, and power-on equalized charging again after power
failure. The cyclic equalized charging means that the system can automatically
Chapter 2. Structural Features & Work Principles
----35----
perform equalized charging according to the cycles set by users. The power-on
equalized charging after power off means that the battery discharges after
power off, and automatically performs charging management to the battery
pack when the power is resumed.
(2) Battery protection
With mains supply’s breaking down, the loads will be powered by batteries;
when the battery voltage lowers to a certain degree (set by the user), alarm will
be given; when the battery further discharges till the battery voltage gets lower
than the first-stage power shut-down value set by users, a group of minor loads
can be cut off as per the user’s setup; when the battery further discharges to the
ultimate protective voltage (second-stage power shut-down voltage), cut off
another group of loads, so as to protect the battery from damage due to
over-discharge. Thus, a relatively longer duration is ensured for the major loads
after power failure and at the same time the batteries can be protected against
damages due to over discharge.
6. Control function
It is allowed to control, based on the foreground user’s operation or control
commands of the background PC, the ON/OFF and equalized charge/float
charge working status of the rectifier, as well as to control the rectifier output
voltage according to the user’s demand.
2.6.4 Check precision
1. AC
The check precision of AC voltage is ±3VAC, and that of AC current is ±2A.
2. DC
The check precision of DC current (rectifier output current, battery current and
load current) is ±3A; while the check precision of DC voltage (battery voltage
and output voltage) is ±0.3V.
3. Temperature/humidity
Temperature measurement precision ≤ +/-3°C
Humidity measurement precision ≤ +/-5%
ZXDU500 500A Combined Power Supply System User’s Manual
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4. Detection of switch parameters: the switch parameter check and alarm report must
be 100% accurate without false report or omission.
2.6.5 Alarm
1. Alarm setting
The user can set the upper and lower alarming limits of the detected power
supply system data according to real circumstances.
2. Alarm management
The system has perfect alarm judging conditions, which ensures that not only
the alarm judgment is reliable but also the alarms are reported in real time.
3. Alarm mode
The monitoring unit emits audible and visual alarm signals to prompt the
maintenance personnel, and at the same time, sends the alarm information to the
background PC via the RS232 communication interface. The maintenance
personnel can view and handle the alarm information and when he pushes a
button, the alarm sound disappears. At the same time, the alarm indicator still
suggests the alarm status. Only after the alarm status totally disappears will the
indicator light go out.
2.7 Communications networking schemes The ZXDU500 500A combined power supply system has flexible and diversified
communications and networking modes, which mainly cover the following.
2.7.1 Simple RS232 serial port mode
The monitoring unit and the background are connected directly via the serial port. This
is the most direct and convenient way of monitoring, but it is largely restricted by
practical conditions. Usually, it is required that the distance between the background
monitoring host and the power supply monitored should not be wider than 15 meters,
as illustrated in Fig. 2-20.
Chapter 2. Structural Features & Work Principles
----37----
RS232
Power supplysystem
PC
Fig. 2-20 Connections of serial port monitoring
2.7.2 Dial-up mode (MODEM mode)
The monitoring background exchanges data with the monitoring unit in the dial-up
mode using a MODEM. This mode requires that the monitoring background be
connected with two Modems and the monitoring unit, with one Modem. Of the two
Modems connected to the monitoring background, one is responsible for data querying,
while the other, receiving the alarm data of the combined power supply system, as
illustrated in Fig. 2-21. This mode features the optimal versatility and is applicable to a
majority of networking modes.
Modem
Power supplysystem
PSTN
Modem
ModemModem
Modem
Power supplysystem
Power supplysystem
Fig. 2-21 Monitoring in the MODEM mode
2.7.3 ZXJ10 digital SPC switch mode
In this mode, networking is performed through the monitoring platform of ZXJ10
Digital SPC Switch (ZXJ10 for short below) developed by ZTE Corporation. The
networking and connections are illustrated in Fig. 2-22. For a single combined power
supply system, this mode is similar to the simple RS232 serial port mode.
ZXDU500 500A Combined Power Supply System User’s Manual
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Powersupply
monitoring
RS232ZXJ10 operation &
maintenance system
RS232 RS232 RS232 RS232
Power supplysystem
ZXJ10remote module
RSU
ZXJ10 central module
LAN
Power supplysystem
ZXJ10remote module
Power supplysystem
ZXJ10remote module
Power supplysystem
…
ZXJ10remote module
Fig. 2-22 Monitoring in ZXJ10 mode
The data under the power supply monitoring is transferred through the data channel of
ZXJ10. This mode is desirable for users using ZXJ10 as it can save the networking cost
(by sharing a set of monitoring hardware) and it is more reliable than the Modem mode
in terms of data transmission. The serial port of the power supply is connected to serial
port 2 of MP of ZXJ10, while the background may either share a computer with ZXJ10
maintenance platform or use a separate computer, which must be connected using the
network cable and run the NE2000 driver. The characteristics of the networking mode:
real-time, simple and economical networking.
2.7.4 SCM mode
The SCM signal conversion module is a set of intelligent equipment of proprietary
intellectual property by ZTE, which mainly applies to the centralized monitoring
networking of GSM base station. It is mainly used to join the point-to-point service
digital channels provided by microwave or optical fiber equipment into a network, to
perform centralized monitoring on the power supply, environment and other equipment
of the base station. Such an application is especially suitable for the networking in
other environments having the point-to-point service digital channel but without
Chapter 2. Structural Features & Work Principles
----39----
enough telephone lines.
The SCM signal conversion module features high reliability and wide range of
applications. Besides, the equipment has several standard interfaces applicable to
RS232, RS422 and RS485.
The SCM mode can combine the power supplies to be monitored into a tree network,
and realize centralized monitoring on various power supply devices within this network
via the monitoring center. The SCM networking model is illustrated in Fig. 2-23.
Monitoring information of other
systems Microwave equiment
Centralized supervision sysetm Microwave
equiment
Microwave equiment
SCM RS232 /422
Other equipment Power supply
I/O
RS232
Microwave equiment
Microwave equiment
SCM RS232 /422
Other equipment Power supply
I/O
RS232
RS232
Microwave equiment
Microwave equiment
SCM RS232/422
Other equipment Power supply
I/O
RS232
The same as in the broken line
Fig. 2-23 SCM networking model
For the system running on the network, SCM is a remote transmission mode; for a
single combined power supply system, this mode is similar to the simple RS232 serial
port mode.
2.7.5 Access network mode
In addition to the above-mentioned four monitoring modes, there is the “Access
network communication and networking function” in the system. That is, connect serial
port X6 of the power supply system to the serial port of the ZTE access network
equipment, which has a special power supply monitoring software to monitor the
power supply system remotely. We shall introduce the system topology of the AN
ZXDU500 500A Combined Power Supply System User’s Manual
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networking mode.
In the remote user unit system, there exist the environment monitoring system and
integrated power supply monitoring system. Both are connected to the CSV board of
the access network system via the RS232 serial interface, and transmit the
bi-directional monitoring data to the remote monitoring and maintenance platform via
the CSV board. For the power supply monitoring system, there may exist two
possibilities which are described below respectively.
1. Both the power supply monitoring system and environment monitoring system
exist in the system, where Environment Monitoring Unit (EMU) and the CSV
board are directly connected, while the power supply monitoring system and
the Environment Monitoring Unit (EMU) are connected, as illustrated in Fig.
2-24.
Power supplymonitoring
systemCSV board
Environmentalmonitoring Unit
(EMU)RS232 RS232
Fig. 2-24 The mode of communication with connection between EMU and the power supply monitoring system as well as
between EMU and the CSV board
The power supply monitoring information is directly sent to the environment
monitoring unit, which then forwards the information to the CSV board.
2. If there is only the power supply monitoring in the system, the power supply
monitoring system will be directly connected to the CSV board, as illustrated in
Fig. 2-25.
CSV boardPower supplymonitoring system RS232
Fig. 2-25 The mode of communication with the power supply monitoring system directly connected to the access network
CSV board
Two points shall be emphasized for the two cases mentioned above: first,
environmental monitoring is completely transparent to the power supply
Chapter 2. Structural Features & Work Principles
----41----
monitoring system, which does not know or care about its existence; Second, no
modification is necessary for the communications protocols of the power
monitoring system in any one of the situations mentioned above. In addition,
the power can also be monitored via the PPS board that connects with the
system, as shown in Figures 2-26 and 2-27.
Power supplymonitoring system PPS board
Environmentalmonitoring unit
(EMU)RS232 RS232
Fig. 2-26 The mode of communication with connection between EMU and the power supply monitoring system as well as
between EMU and the PPS board
PPS boardPower supplymonitoring system RS232
Fig. 2-27 The mode of communication with the power supply monitoring system directly connected to the PPS board
2.7.6 CDMA mode
For a single combined power supply system, this mode is similar to the simple RS232
mode.
Because there are many CDMA cell stations which are scattered, it is not practical and
economical for the combined power supply system itself to provide the data channel
for maintenance and monitoring. Therefore, communication can be done between the
power supply monitoring background and foreground via the CDMA internal
communication channel for daily maintenance and monitoring. The ZXDU500 500A
combined power supply system provides the CDMA networking mode.
First, the power supply foreground can be connected via serial lines with the CDMA
base transceiver station of the power supply, so as to realize data exchange; second, the
power supply monitoring background shall also communicate with CDMA background,
which will not only establish data channels between the foreground and the
background of the power supply, but also timely reflect the monitoring information to
the CDMA background operation and maintenance station. Communication between
ZXDU500 500A Combined Power Supply System User’s Manual
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the power supply background and CDMA background is realized through the
communication system running CDMA at the power supply monitoring background
and the corresponding TCP proxy program. The connection of the entire system is
illustrated in Fig. 2-28.
Ethernet
ZTE powersupply product
series
RS232
ZXC10-BTS
SAM boardR232 port
ZXC10-BSC
CDMAbackgroundserver
CDMAbackgroundclient terminal
ZTE powersupply
monitoringbackground
E1
Fig. 2-28 Connection in the CDMA networking mode
----43----
3. Equipment Installation
3.1 Installation procedures The work flow for installation, debugging, acceptance and commissioning is shown in
Fig. 3-1.
Project survey (including1st environment
acceptance
Project preparation
Start
2nd environmentacceptance
Unpacking &acceptance
System installation
System debugging
Test forpreliminaryacceptance
Handover
Cutover preparation &cutover
Final acceptance
Trialrunning
Finish
N
Y
N
Y
Inspection &power-on
Fig. 3-1 Procedures for installation and acceptance of combined power supply
ZXDU500 500A Combined Power Supply System User’s Manual
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3.2 Basic requirements for power supply system installation Before the installation of the power supply equipment, ZTE Corporation shall, together
with its local customer service center and user representatives, fulfill project and
environment survey, and, according to the actual situations of the site, fill in the Survey
Report on ZXDU Combined Power Supply System Project, and Acceptance Report on
ZXDU Combined Power Supply System Environment. If the conditions on the user site
fall under the minimum requirements on safe running of equipment as stipulated in the
survey report, the customer should be required to improve the site conditions
accordingly. The equipment installation shall resume only after the conditions are
compliant with the requirements of normal and safe running of the equipment.
3.2.1 Environment requirements
For environment requirements, please refer to the stipulations in Acceptance Report on
ZXDU Combined Power Supply System Environment.
3.2.2 Power supply requirements
1. General principles
The communications equipment should adopt mains supply as the primary
power supply. We should configure diesel generators and standby battery pack
according to the conditions of local power supply. The centralized power supply
is recommended for the AC power supply system consisting of mains and
self-contained diesel generators, while 3-phase 5-line system or single-phase
3-line system is recommended for low-voltage AC power supply system. The
self-contained diesel generators are preferably the automatic version.
When the load power factor falls under 0.7, the reactive power compensation
equipment should be installed to push the power factor up over 0.8.
The AC power cable should have copper cores and its sectional area should be
consistent with the load. When the wiring distance is less than 30m, the
cost-effective current density (with the value of 2.5A/mm2~4.0A/mm2) will be
used to calculate the sectional area. The outdoor power cable should be
directly buried or buried in tubing, and preferably laid away from signal cables.
2. Capacity requirements
(1) Power transformer
Chapter 3. Equipment Installation
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The ZXDU500 500A combined power supply is a switching power supply,
which, for its special features, requires a larger redundancy in power supply. If
the power transformer capacity is small, other equipment so powered may fail
to work normally. If it is a special transformer, the capacity is calculated at full
configuration (500A) and should be higher than 65kVA. Besides, in
consideration of power consumption of AC standby output and air-conditioning
of the system, a higher capacity is recommended, and the selection should
follow the specifications upwards.
(2) Diesel generator set
If the load of the rectifier exceeds 30 percent of the capacity of the power set,
the voltage waveform will be seriously distorted when the high order harmonic
wave current generated by the rectifier passes the stator winding of the
synchronous power set, which will bring forward impacts of two aspects: on the
one hand, it will cause instable running and mechanical vibration; on the other
hand, the harmonic wave current will result in an overheated generator, and
speed up the insulation aging of the generator. It not only harms the generator,
but also affects the stable running of the power supply system, that is, the
vibration problem frequently encountered nowadays. As a result, the power
supply load shall not exceed 30% of the generator capacity, the load of the
power supply shall be calculated as per the existing power, and the simplified
calculation is as shown below: output voltage (calculated according to 60V) ×
output current (calculated according to the final configuration) × 2. The
selection of generators should also take their power factor and excitation into
consideration, while those with brushless fundamental wave excitation are not
recommended.
3.2.3 Safety and protection requirements
1. Lightningproof and surge protection requirements
Reliable lightning protection facilities must be installed for buildings with
communications equipment. In order to maintain normal performance of the
system, a lightning-proof device, or level B lightning-proof device, should
preferably be installed somewhere before the AC mains is introduced into the
power system. The level-B lightning arrester should be installed at the expense
of the user, and the recommended model is the ZXDU-LPU dedicated
ZXDU500 500A Combined Power Supply System User’s Manual
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lightning-protection unit produced by ZTE. If possible, the level B lightning
arrester should be installed somewhere 12m or more in front of the input end of
the power distribution cabinet. It is required that the cables from the level B
lightning-proof device installation site to the AC power distribution unit be
indoor cables, thus to ensure that the section of the cables is not directly
exposed to lightning strike. In the installation of the level B lightning-proof
device by users, attention should be paid to the cable diameter and length on the
lightning-proof device, and the lead sectional area should be no less than
16mm2, while the lead length is the shorter the better, so is the case for the
grounding cable of the lightning-proof unit.
The lightning-proof device and grounding cables installation are shown in Fig.
3-2.
3-phase ACdistribution
board
Level-C lightningarresterLevel-B
lightningarrester
Battery I Battery II
Com.equipment
Protectionground
Com.equipment
Protectionground
Equipment room grounding busbar (net)
N
AC input
No lessthan12m
Grounding body
System output -48
Working ground for system output
BA
C
PE A B C N
Fig. 3-2 AC incoming anti-lightning and grounding installation
2. Grounding requirements
The joint grounding mode is usually adopted for designing the grounding mode
of the communications equipment room, that is, the working ground, lightning
protection ground and protection ground share the same group of grounding
Chapter 3. Equipment Installation
----47----
blocks, with the grounding resistance conforming to the specifications in Table
3-1.
The basic approach of joint grounding is to short the grounding busbar and DC
working ground of the power system with the user grounding busbar. As far as
those base stations without independent user grounding busbars are concerned,
the DC working ground access points (positive busbar or negative busbar) of
the power supply system can be regarded as the user grounding busbar. The
lightning ground and protection ground should be connected to the grounding
busbar of the power system in the vicinity, as shown in Fig. 3-2.
The multiple grounding of AC zero lines should not share the grounding busbar
or grounding grid of the equipment, and a separately buried grounding cable is
recommended for the multiple grounding of zero lines. The protective
grounding cables in the 3-phase/5-line system and the single-phase/3-line
system can be directly introduced into the grounding busbar of the power
supply system, or the protective ground connection terminal of the AC power
distribution cabinet.
Table 3-1 Grounding resistance requirements for communications stations
Grounding resistance Applicable scope Reference
<1Ω Buildings of general purposes, international telecom office, tandem exchange, SPC exchange over 10000 lines, toll exchange over 2000 lines
<3Ω SPC exchange of 2000—10000 lines, toll exchange under 2000 lines
<5Ω SPC exchange less than 2000 lines, optical cable terminal station, carrier repeater station, earth station, microwave hub station, mobile communication base station
YDJ20-88 “Provisional technical specifications on SPC telephone switch equipment installation and design”
<10Ω Microwave repeater station, optical cable repeater station, and small-sized earth station
<20Ω Passive microwave repeater station
YD2011-93 “Lightning-proof and grounding design specifications for microwave stations”
<10Ω Applicable for the lightning-proof grounding at the joint of the power cable and overhead power cable with unit earth resistance less than 100Ω×m
GBJ64-83 “Over-voltage protection design specifications on industrial and civil power equipment”
<15Ω Applicable for the lightning-proof grounding at the joint of the power cable and overhead power cable with unit earth resistance of 101Ω×m~500Ω×m
<20Ω Applicable for the lightning-proof grounding at the joint of the power cable and overhead power cable with unit earth resistance is 501Ω×m~1000Ω×m
GBJ64-83 “Over-voltage protection design specifications on industrial and civil power equipment”
ZXDU500 500A Combined Power Supply System User’s Manual
----48----
3.3 Preparations before installation
3.3.1 Safety check
The following safety inspections must be carried out before installing the ZXDU500
500A combined power supply system:
1. Workable and effective fire-fighting devices must be made available in the
equipment room;
2. Different mains jacks in the equipment room must bear obvious marks;
3. No inflammables and explosives shall be placed in the equipment room;
4. Reserved holes and openings in floorslabs shall be covered for safety.
3.3.2 Cooperation of the office party
The installation of the equipment should be carried out jointly by the technical
personnel from both ZTE Corporation and the office party. To facilitate the normal
operation and maintenance of the equipment, the technical personnel of the office party
should learn the installation, structure, wiring and debugging steps actively.
3.3.3 A complete preparation for tools and instruments
1. ZTE shall provide the office party with a list of the tools and instruments, while
special instruments shall be taken to the site by ZTE technical personnel and
the universal ones purchased by the office party;
2. The instruments must be subject to rigorous calibration by relevant institutions,
and only qualified ones are allowed;
3. General-purpose tools and instruments mainly include the following items:
monkey wrench, socket wrench, Philips screw driver, flat-tip driver, antistatic
wrist strap, diagonal plier, long nose plier, vice, tweezer, impact drill, soldering
iron, ruler and tape measure, multimeter, MODEM, multi-serial-port card,
serial ports, MODEM connection line, etc.
4. Prior to the installation, the office party should prepare for the equipment room
and grounding cables and provide facilities required in the installation;
5. Installation shall be postponed if any inconsistence is found, and negotiation for
commencement will have to be performed.
Chapter 3. Equipment Installation
----49----
3.3.4 Preparations of technical documents
1. Equipment room design documents and working drawings shall come from the
designers entrusted by the office party;
2. “ZXDU500 500A Combined Power Supply System User’s Manual” is provided by
ZTE Corporation.
3.4 Work of supporting facilities of the power supply system
3.4.1 Battery installation
The battery installation of the power supply system is to connect the battery into the
power supply system, which is usually the responsibility of the battery vendors.
The installation tools of battery pack have to undergo insulation treatment, in which the
plastic battery housing and output end should be kept intact. The batteries to be
installed layer by layer have to be connected by respective layers before inter-layer
connection. Leave the charging/discharging cable unconnected for the time being.
3.4.2 Laying of power cables
In the engineering design, the AC power cable and DC power cable should be laid
separately, to avoid the 3-phase AC power exerting electromagnetic interference on AC
output.
According to different load tributaries and polarities, each power cable of the battery
line and load line shall bear the line number and the marks for positive/negative pole,
and the marks shall be labeled on the cable for certain distance.
The positive polar cable of the battery and DC power distribution should be red or
black, the load cable should be blue, while the grounding cable should be yellow green.
The phases A, B, C and zero of the AC power cable should correspond to yellow, green,
red and light blue respectively.
When a uniform color is adopted for the power cables, black color shall be chosen,
however, cable marks shall be well presented, so as to avoid mixing.
ZXDU500 500A Combined Power Supply System User’s Manual
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3.5 Unpacking and acceptance
3.5.1 Shipping
The ZXDU500 500A combined power supply system is packed as required, bearing
waterproof and shockproof signs for shipping. When the equipment is delivered to
the office party, it should be handled with care and guarded against sunlight exposure
and rainwater.
1. The physical dimensions of the wooden case (cabinet) are
2200mm×760mm×870mm (L×W ×H). Proper handling tools and weight lifting
machinery (such as forklift) appropriate for such dimensions should be
provided.
2. As the wooden cases are large in size, the place for their unpacking has to be
determined beforehand (taking into consideration the route from the unpacking
place to that of installation, the shorter the better), and prepare the necessary
transport vehicles, such as hydraulic vehicle, cart, jack, ropes, piling machine
and iron bars.
3. Special care shall be paid to “bottlenecks” in the moving, such as turns, passage
elevators and slopes.
3.5.2 Unpacking
1. Check the appearance of the box to see if there is damage and indent, and take
photos and notify the supplier if necessary;
2. Unpacking shall proceed as shown in Fig. 3-3;
3. Remove all contents and fillings from inside;
4. Check whether the machine itself is damaged, deformed or rusted.
3.5.3 Packing list
Unpack the spare part box, and take out the packing list to check whether the contents
in the list are consistent with the parts. If any inconsistency if found with the
equipment part types or quantities, or any damaged in shipping, please do not hesitate
to contact ZTE Corporation.
Chapter 3. Equipment Installation
----51----
1. Remove top cover 2. Remove front side board3. Remove side boards (2 ends) 4. Remove back side board
5. Remove foam board 6. Open dampproofplastic film
1 Top cover
3 Side board
5 Foam board
5 Foam board
5 Foam board
5 Foam board
3 Side board
6 Bottom frame
2 Front side board
Fig. 3-3 Unpacking procedures
3.6 Cabinet installation
3.6.1 Cabinet installation requirements
Determine the installation position of the cabinet according to the specific conditions
of the site. The installation position should be selected in view of reasonable line in/out
of the equipment and convenience of operation and maintenance. The installation
height shall be convenient for observing the monitoring display, taking into
consideration of the convenience in ventilation, heat dissipation, operation and
ZXDU500 500A Combined Power Supply System User’s Manual
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maintenance. The cabinet should be installed horizontally, with the cabinet vertical
inclination no more than 5°.
The installation modes for cabinet include the following: direct installation on the floor,
and fixed installation on the bracket.
3.6.2 Cabinet installation procedure
1. Determine the position for the cabinet to be installed
The ground position of cabinet should be specified according to factors such as
spatial position requirement, rationality of wire in/out of power supply system,
physical dimensions of the equipment, convenience of operation and
maintenance, size of equipment room, and specific environment conditions. The
requirement on the installation position of the cabinet is as shown in Figure 3-4.
600mm
600m
m
Front ofcabinet
Spacing betweenside and wallshall not be lessthan 0.8m
Spacing betweenback and wall shall
not be less than0.8m
Front path shall not be lessthan 1.5m
Fig. 3-4 Requirements for the position of the combined power supply cabinet to be installed
2. Specify cabinet installation mode
First decide whether a bracket is needed. When antistatic floor is available in
the user’s equipment room, the bracket should be installed under the cabinet.
Such factors as the heights of the floor and the ground, the exterior size of the
cabinet, the location of the fixing hole for the base, the bracket bearing etc. will
have to be considered in making the bracket. Where there is no antistatic floor
Chapter 3. Equipment Installation
----53----
in the equipment room, the cabinet is usually installed by fixing it directly on
the ground with bolts.
3. Specify the hole site and fix the expansion bolts
1) Specify the installation hole position
After the position for installing the cabinet is specified, the position for the
installation holes should be specified according to the cabinet position and its
fixing holes, and the central point for the installation holes should be specified
as well. If a bracket is used in installation, the hole site should be specified
according to the installation hole dimensions of the bracket and that on the
ground.
The installation dimension of the cabinet is shown in Fig. 3-5.
Determine the position of the installation hole for the cabinet according to the
size of the fixing hole as shown in Fig. 3-5. After determination of the
installation hole location, use the impact drill to drill the installation hole. The
aperture for fixing the cabinet is 14mm. The fixing bolt is typically M10×80,
the drill bit isФ12, and the depth of the hole is about 70mm. During punching,
we shall try to prevent the vibration of the electric drill from resulting in
eccentricity, besides, the location of the hole shall keep vertical with the ground.
ZXDU500 500A Combined Power Supply System User’s Manual
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Ground baseinstallation hole
Anchoringbolt
installationhole
Fig. 3-5 Size for cabinet installation
2) Install expansion bolts
Add the gasket and the screw cap on the screw, insert it into the hole, and turn
the screw cap with the wrench clockwise, so as to fix the expansion bolt in the
hole, and take down the screw cap and the gasket afterwards.
After the expansion bolts are fixed, the part above the ground should be about
30mm.
The expansion bolt mounting procedure is shown in Fig. 3-6.
Chapter 3. Equipment Installation
----55----
Fasten nut to fixexpansion bolt in hole
Nut
Spring washer
Flat washer
Underground partof expansion bolt
Bolt after installation
Fig. 3-6 Schematic diagram of expansion bolt mounting
4. Cabinet positioning
During cabinet installation, several persons are needed to lift the cabinet above
the ground, then settle it down after aiming precisely into position. When
possible, the cabinet can be hoisted using the hoisting ring on top of the rack
with a pulley block and put in position.
The position of the cabinet hoisted to is illustrated in Fig. 3-7.
ZXDU500 500A Combined Power Supply System User’s Manual
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Flat washer
Amplified part A
Bolt
Spring washer
Nut
Underground part of bolt
Nut after installation
Amplified part B
Cabinet
Fig. 3-7 Cabinet installation
The installation of the bracket is quite similar, first fix it on the expansion bolts,
as shown in Fig. 3-8.
Chapter 3. Equipment Installation
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Underground part of bolt
Expansion bolt after installation
Bracket
Fig. 3-8 Bracket installation
Then lift or hoist the cabinet onto the bracket, as shown in Fig. 3-9.
ZXDU500 500A Combined Power Supply System User’s Manual
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Bolt of fixed bracket
Bolt
Flat washer
Spring washer
Nut
Amplified figure
Cabinet
Fig. 3-9 Installation of cabinet with bracket
5. Cabinet fixing
After the cabinet is in position, it should be adjusted properly horizontally and
vertically. Generally speaking, insert an iron sheet under the lower edge or the
corner where the cabinet lands on the ground, making the vertical inclination of
the rack less than 5°, and put washers, spring washers and nuts on the expansion
bolt in the end to fix the rack properly. When the cabinet is installed on bracket,
fix the bracket and cabinet together with M10 screw of proper length, then
adjust the vertical inclination of the cabinet, making the vertical inclination
angle of the cabinet less than 5°.
3.7 Overall system assembly Assembling the integrated equipment refers to assembling the rectifiers that are
Chapter 3. Equipment Installation
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separately packed onto the cabinet.
3.7.1 Assembling and fixing the monitoring unit
The position of the monitoring unit on the cabinet is shown in Fig. 3-10. The
monitoring unit is delivered together with the cabinet as a whole package, so separate
installation of the monitoring unit is not required.
The monitoring unit and the rectifier module are hot-swappable. The system can still
run normally without the monitoring unit. In this case, the battery is in float-charging
status, and the current threshold of each rectifier should be adjusted to 20A.
When the system is running, the procedures for installation and removal of the
monitoring unit are as follows:
1. Assembling sequence
(1) Slowly insert the supervision plug-in box from the front;
(2) Secure the fastening screws on the front panel;
(3) Insert the power supply plug, monitoring plug, and communication wires on the
back panel;
(4) Turn on the power supply switch of the monitoring unit (the switch is on the upper
left of the back panel of the monitoring unit).
2. Disassembling sequence
(1) Switch off the power supply of the monitoring unit;
(2) Remove all the monitoring communications lines from the back panel of the
monitoring unit;
(3) Remove the fastening screws from the front panel;
(4) Slowly take out the monitoring plug-in box from the front.
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Fig. 3-10 Installation of supervision box
3.7.2 Modem installation and fixing
For equipment with the modem for remote monitoring, the modem should be installed
to the upper right of the monitoring unit of the cabinet (front view), as shown in Fig.
3-11. To install the modem, unscrew the installation bracket of the modem, with the
modem connection port facing backward, insert and fasten the modem into the bracket,
and screw tight the bolt.
Bracket MODEM (indicator panel pointed forward)
Fig. 3-11 Modem installation
Chapter 3. Equipment Installation
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3.7.3 Rectifier installation and fixing
Specify the rectifier position according to the principles of balanced three phases and
conducive to cooling. The phase sequence distribution of the 3-phase AC input in the
rectifier module position in the system is shown in Fig. 3-12.
Phase A
(01)
Phase B
(02)
Phase C
(03)
Phase A
(04)
Phase B
(05)
Phase C
(06)
Phase A
(07)
Phase B
(08)
Phase C
(09)
Phase A
(10)
Fig. 3-12 Phase sequence distribution diagram of the rectifier slots of ZXDU500 500A combined
power supply system cabinet (front view)
Dissemble the packaging box for the rectifier, take out the rectifier, carefully examine
whether there is any damage, and contact the local customer office of ZTE Corporation
if any; if there is no any damage, install the rectifier on the bracket. The assembling
and disassembling of the rectifier are illustrated in Fig. 3-13.
ZXDU500 500A Combined Power Supply System User’s Manual
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Mechanicallock spanner
LOCKUNLOCK
Rectifier pushdirection
Moving direction formechanical lock
switch
Fig. 3-13 Installation of switched rectifier
To install the rectifier, seize the handle with one hand, and hold the rectifier with the
other, slowly push it into the rectifier slot, so that the integrated plug of the rectifier can
be correctly and reliably connected to the corresponding socket.
Before plugging the rectifier into the slot, the mechanic lock switch on the panel of the
rectifier should be set to the left side and then push the rectifier slowly in. When it can
no longer be pushed in, it means that the rectifier has reached the first limiting position.
At the time, it is necessary to move the mechanical switch to the rectifier on the right
before going on to insert the rectifier until the bottom, i.e., the second limiting position.
Move the mechanical switch to the position on the left, so that the rectifier is “locked”.
To uninstall the rectifier, move the mechanical switch to the right, slightly unplug the
rectifier outside for about 1cm, move the mechanical switch on the panel of the
rectifier to the left to extract the whole rectifier.
3.8 Electrical connection The internal lines of the combined power supply system have been connected prior to
leaving factory, and the electrical connections on the spot include the following:
connection of AC input lines, connection of DC load lines, connection of battery cables,
connection of battery temperature sampling lines, connection of grounding wires,
connection of communications lines with centralized monitoring function (users shall
provide telephone lines when centralized monitoring is performed via MODEM).
When upward wire routing is adopted for the system, the overhead wiring shall be
undertaken; when downward wire routing is adopted, hidden grooves shall be
employed for wiring. The principle for electrical connection is safety and reliability.
Chapter 3. Equipment Installation
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3.8.1 Connection of AC input lines
The wiring for AC power distribution unit includes the connection of AC input lines,
the connection of AC standby output, and the connection of emergency lighting lines.
The structure of the AC power distribution unit is shown in Fig. 3-14.
B
NW1V1U1
Y G R
NW2V2U2
BRGYAC input 1 AC input 2
Fig. 3-14 Line connection of AC 3-phase input
3-phase and 5-line input is employed for the system’s AC input lines, the leading in
ends of the input phase conductors are U1, V1 and W1 terminals of the AC input line
banks, with the colors of the connection lines corresponding to yellow, green and red;
the leading in end for the zero line is terminal N, and the connection line is blue; the
leading in end of the grounding line is the grounding busbar at the back of the cabinet,
and the color of the connection line corresponds to the yellow-green one.
If users use 2 lines of mains supply or 1 line of mains supply plus 1 line of oil engine,
connect the phase conductors of the first line of mains supply to U1, V1 and W1
terminals of the input connection busbar, and connect the phase conductors of the oil
engine or the other line of mains supply to U2, V2 and W2 terminals. The zero line is
connected to terminal N, and all the grounding cables to the grounding busbar.
The diameter of the lead-in line should be selected based on the actual load and battery
ZXDU500 500A Combined Power Supply System User’s Manual
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conditions. A typical choice is the copper-core soft cable with the sectional area
16mm2~35mm2. Remove the insulation layer from the connection ends of the input
phase line and the zero line that are connected with the cabinet, and insert them into the
corresponding terminals of the input busbar and tighten them.
The grounding cables are connected to the grounding copper busbar on the lower left
side of the cabinet back. During connection, the line ends should be crimped or welded
with copper connection terminals of proper sizes.
If the user only has a single phase AC power supply, then the connection terminals U,
V and W of the input 3-phase phase lines should be short-circuited, while the position
of the zero line connection remains unchanged, and now the AC input lines should be
thickened accordingly. Protection devices such as switches or fuses should be equipped
before the AC input lines are led into the equipment. Make sure the neutral lines are put
through and will not be short-circuited in any case. In the areas of frequent lightning
strikes, the line inlet of mains and equipment buildings should be fixed with good
multi-level lightning-proof system to maintain the normal and safe system operation.
The AC standby output phase lines are connected to the standby output air switch,
while the zero lines are connected to the zero line copper busbar on the lower right side
of the cabinet back. Screw the terminals of the phase lines onto the air switch after
stripping off the insulation layer, crimp or weld the zero line terminals with copper
terminals of proper sizes, and then screw them onto the zero line busbar, as shown in
Figure 3-14. The output fuse of emergency lighting is below the battery fuse of DC
power distribution unit. The negative and positive ends of emergency lighting lines
should be connected respectively to the emergency lighting fuse and working ground
copper busbar.
Note:
1. The AC drop lines are high-voltage active lines, be sure to power off the AC
input during operation, and add temporary prohibition signs to the
switches not allowed to be used during operation;
2. Fully insulate the AC line terminals, the contacts and other exposed positions;
there shall not be any joint between the lines.
3.8.2 Connection of DC load lines
Corresponding cross section areas of the DC output lines should be selected according
Chapter 3. Equipment Installation
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to the load current. To connect the fuse and the busbar, use connection copper lugs of
appropriate sizes crimped or welded at the line terminals for connection; strip the
insulation layer of the connection stubs for connection of the air switch.
The red DC load cables corresponds to the positive output (working ground), and the
blue to the negative output. The negative pole of DC output is connected to the
corresponding load output, and the positive pole is connected to the positive copper bus
bar (working ground) at the top of the cabinet in the back. The positions and method
for line connection are illustrated in Fig. 3-15 and Fig. 3-16.
负载电缆负极
负载电缆正极电池电缆负极
电池电缆正极
工作地母排
负载熔丝
蓄电池熔丝
Negative pole of battery cable Positive pole
of battery cable
Positive pole of load cable
Negative pole of load cable
Working ground busbar
Load fuseBattery fuse
Fig. 3-15 Locations of load cable connection
Load cable
Connection terminalfixed fast on copper
busbar
Copper lug
Flat washer
Spring washer
Nut
Bolt
Flat washer
Fig. 3-16 Locations of load cable connection
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The installation flow of the DC load lines:
1. The selection and wiring of the load lines should meet the requirements of the
engineering design, and the connection terminals of load lines should be
prepared properly. Use connection terminals for the cables connected to the
fuse, and directly crimp the cables connecting to the breaker. Each load line
should bear corresponding signs.
2. Disconnect the corresponding load fuse or breaker.
3. Connect the load working grounding cable on the busbar of the power supply
working ground busbar.
4. Connect the load lines with the fuse base or the output ends of breaker.
Note:
1.... 1. To add DC loads with power on, prevent short-circuit accidents during
operation, and take corresponding measures for human body insulation;
2.... 2. As the system has the second-stage power shutdown function, make sure
to connect the secondary power supply equipment to the first-stage
shutdown group, and connect the main power supply equipment to
second-stage shutdown group. The DC load shunt at the cabinet front is
the second-stage power shutdown shunt.
3.8.3 Connection of battery cables
The copper lugs at the battery connection lines and joints are thicker and larger than the
load lines, and their colors should be identical with those of the DC load output lines. If
the system is configured with multiple battery sets, the conductors of each battery set
should be connected respectively.
The specific steps are as follows:
1. As per the given battery capacity and the maximum charging current, select the
appropriate wires (often with a cross sectional area of over 50mm2), correctly
mark the battery connection lines, the connection terminals and the positive and
negative poles;
2. Remove the battery fuse and place the battery connecting line properly;
3. Connect the positive busbar of the power system and the DC –48V on the battery
Chapter 3. Equipment Installation
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fuse respectively to the positive and negative poles of the battery, be careful not
to make a reverse connection;
4. Switch on 1 to 2 rectifiers after the system is powered on. After the output enters
into normal operation, use the fuse extractor to insert the battery fuse.
Note: when the rectifier is started up, the fuse can be inserted only after normal
input. This way, the voltage difference between two ends of the fuse will be too
small to cause sparks, otherwise it will.
3.8.4 Connection of grounding cables
It is advisable to lead out the protective grounding and working grounding cables
separately and connect them to different points on the grounding block, or they may be
led out separately and connected to the grounding busbar in concentration. The
grounding of the combined power supply system must be proper in compliance with
the grounding standards of the telecommunications equipment.
1. Connection of lightning protection ground
The connection has been completed before exworks, on the spot, multimeters
must be used to measure whether the PE terminals of lightning protection and
the grounding bolts of the lightning protection ground within the cabinet have
been short circuited. If yes, it means that the connection of lightning protection
ground has been completed; if not, it is necessary to perform installation of the
lightning protection ground. The copper-core cables with a cross section area of
over 16mm2 should be used as the lightning-protection ground cables, and
during wiring the cables should be separated from other working cables (not
grounding cables) as far as possible. When laying the lightning-protection
cables, be careful not to increase the line inductance caused by too many bends.
One end of the lightning-protection ground cable is connected to the grounding
busbar, while the other to the PE terminal of the lightning arrester. The line
connection of grounding bolts is illustrated in Fig. 3-17.
ZXDU500 500A Combined Power Supply System User’s Manual
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铜鼻子
螺栓
弹垫
平垫
Bolt
Spring washer
Flat washer
Copper lug
Fig. 3-17 Line connection of grounding bolts
2. Working ground connection
The wire diameter of the work ground connecting line is the same as the
sectional area of the load branch cables, and it is recommended that the
minimum sectional area be no less than 16mm2. One end of the working
ground is connected to the working ground busbar (positive busbar), while the
other end is connected to the user ground busbar via the connection terminal.
3. Protective ground connection
The protective ground and the lightning protection ground of the combined
power supply system have been connected together before equipment delivery.
The sectional area of the protective ground connecting line should be no less
than half of the sectional area of the AC input with the minimum sectional area
of 16mm2. Normally multi-core copper cables are used, both ends of which are
crimped with copper connection terminals of appropriate sizes, one end is
connected to the grounding busbar at the back of the cabinet, while the other
end is connected to the user grounding busbar.
Chapter 3. Equipment Installation
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铜鼻子
螺栓
平垫铜排
螺母
接用户地线排
工作地铜排
Copper lug
Copper busbar Flat washer
Nut
Working ground copper busbar
Bolt
Connected to user ground busbar
Fig. 3-18 Locations of connections lines of protective ground
3.8.5 Electrical connection of the rectifier
The rectifier module is hot-swappable, and completely connected with the system after
it is properly installed, without any further wiring.
3.8.6 Electrical connection of the monitoring unit
All the electrical connection sockets of the monitoring unit are plugged in the back
panel which is illustrated in Figure 2-15.
The definition of each socket on the back panel of the monitoring unit is shown in
Table 2-6.
The monitoring unit is packed and transported together with the cabinet, and the
electrical connections inside the monitoring unit are completed at the delivery time of
the equipment, so no further connections are necessary on site. The electrical
connection of the monitoring unit comprises the connection of 3 lines of battery
temperature detection, as well as the connection between communications cables and
power lines during networking, for detailed information, please refer to the content
below.
The environment detection board and the relay output board of the monitoring unit
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should be connected if the two boards are equipped for the system. The installation
positions and connection methods of the respective devices and components are
described in section 2.6.2.
1. Electrical connection of the battery temperature sampling cable
The monitoring unit of the ZXDU500 500A combined power supply system is
configured with three sockets for the battery temperature sensors: X7, X8 and
X9, as shown in Fig. 2-15. In this way, the temperature of the three lines of
batteries can be detected.
The battery temperature sampling cables are delivered together with the
equipment, and placed in the common cartons. One end of the battery
temperature sampling cable is the battery temperature sensor of a round shape,
and a 2-pin plug is at the other end.
During installation, remove the outer paper of the sensor of the battery
temperature sampling cables, and stick the sensor onto the surface of the battery,
and press it tight. Then, insert the other end of the cable into the sensor sockets
of the monitoring unit: X7, X8 or X9. The first battery temperature sampling
cable is plugged into X7, the second into X8, and the third into X9.
Make sure they are plugged into the right sockets (X7, X8, X9) during
installation. Be careful not to plug the temperature sampling cable into the
power socket of the modem.
2. Electrical connection of the modem
The connection mode is applicable to the networking mode in section 2.7.2.
When remote monitoring is implemented in the modem networking mode, the
modem should be installed and electrically connected. The electrical connection
of the modem includes the power cord socket, telephone line, and
communications line socket.
There is a special Modem power cable in the packing box of the modem. Insert
one end of the Modem power cable into the power socket at the lower left back
panel of the monitoring unit, and the other end into the Modem power socket,
as shown in Figure 2-15. To connect the telephone line with a 4-pin crystal
head, insert one end into the “line” hole of the telephone jack of the modem,
and the other end into the telephone jack provided by the user. To connect the
Chapter 3. Equipment Installation
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communications lines, the cables delivered together with the modem should be
used. One end of this cable is a 25-pin male plug, which should be plugged into
the communications line socket of the modem, while the other end is a 9-pin
female connector and 24-core female connector, the 9-pin female connector
should be inserted into the 9-pin socket X6 on the back panel of the monitoring
unit (see Fig. 2-15). The connection of the modem communications cables is
shown in Fig. 3-19.
25-pin maleplug, connectedto MODEM
25-pinfemaleplug
9-pin femaleplug,connected tosupervisionunit X6
Fig. 3-19 Connection of modem communications cables
3. Connection of serial lines
The connection is applicable to the networking modes described in sections
2.7.1, 2.7.3 and 2.7.4.
Shielded cables shall be employed for the serial lines, and the shielded layer
shall be well grounded at the connection terminal, with its length less than 15m.
When the simplified RS232 serial port mode is adopted for communications,
this equipment provides two communications cables. One is a 9-pin cable with
a female connector at both ends, with a length of 10m. The other is a serial port
connection cable with a 9-pin male connector at one end, and 25-pin female
connector at the other end, this cable is 1m long. For serial port
communications of the system, the 9-pin female plug is connected to RS232
interface X6 of the monitoring unit, while the other end, via the 9-pin female
connector, is connected to the PC (or the far/near end module of ZXJ10, SCM
signal translation module). When a 25-pin female plug is needed for PC (or
remote/near end module of ZXJ10, SCM) connection, a serial transit cable can
be employed for connection. The foregoing two communications cables are
described in Table 3-2.
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Table 3-2 List of serial port communications cables
S.N. Name Material
specifications
Connector
used
Length Quantity
(piece)
Remarks
1 Serial port
communications
cable
4-pin shielded
wire
9-pin female
connectors
(two)
Shielded
wire 10m
1 Self-made It can be
configured for users
demanding three
“tele”s
2 25-pin and 9-pin
serial port
transit cable
4-pin shielded
wire
One 9-pin male
plug and one
25-pin female
plug
1m 1 Self-made
Configured for
three “tele” users
and when the serial
port of the
computer is 25-pin
male connector.
The serial port communications cable 1 is shown in Fig. 3-20, and the
connection of the cables is shown in Fig. 3-3.
10m
9-pin female plug,connected to backgroundPC or SCM, ZXJ10,control module, etc
9-pin femaleplug,connected tosupervisionunit X6
Fig. 3-20 Connection of serial port communications cable 1
Table 3-3 Connection of pins of serial communications cable 1
Hole number for 9-pin female plug Hole number for 9-pin female plug
2 3
3 2
5 5
Chapter 3. Equipment Installation
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The serial port connection cable 2 is shown in Fig. 3-21, and the connection of the
cables is shown in Fig. 3-4.
1m
25-pin female plug, connectedto background PC or SCM,ZXJ10, near-end module, etc.
9-pin male plug, connected to 9-pin female plug of serial cable
Serial transit cable
Fig. 3-21 Connection of serial port transit cable 2
Fig. 3-4 Connection of serial transit cable of a 25-pin female connector with 9-pin female connector
Hole number for 25-pin female plug Hole No. for 9-pin male connector
2 3
3 2
7 5
Precautions for preparing the serial port cable:
1) Weld precisely, there should be no false welding, omitted welding or short circuit
of welding points;
2) Communication in the serial port mode is safe and stable in a distance of 15m, so
avoid the wiring from passing a longer distance and affecting the
communication quality.
3.8.7 Binding cables
Cable running and binding shall be taken into consideration for the combined power
supply system during electrical connection.
When cables run along the grooves of vertical shafts at both sides of the cabinet, the
cables nearby the plugs or connectors shall be bound as per the layout sequence. Cable
interleaving shall be avoided. The cables shall be straight and tidy, and vertical to the
ground after binding, as shown in Fig. 3-22.
ZXDU500 500A Combined Power Supply System User’s Manual
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Binding clip
Fig. 3-22 Binding by wire clips
In selecting wire clips, appropriate specifications shall be taken into consideration
according to specific circumstances. Wire clips shall not be joined together for
connection, thus avoiding decreased intensity after binding. The binding with√in the
figure is correct, while the one with×is wrong, the same in the following.
After binding, the excessive part shall be cut down smoothly, and there are shall not be
any spines at the joint, as shown in Fig. 3-23.
Pointedhead
Pointedhead
Cutsmoothly
Cutsmoothly
Fig. 3-23 Requirements on binding
The spacing between wire clips shall be 3 to 4 times of the diameter of the cable bundle,
as illustrated in Fig. 3-24.
d
3~4d
Fig. 3-24 Wire clips for bundles
When there is a sharp turn for the bundled cables, the wire clips shall be bound at both
sides of the turn, so as to avoid broken cores due to excessive force at the turn, as
shown in Fig. 3-25.
Chapter 3. Equipment Installation
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Wire clip for binding
Fig. 3-25 Turns for wire clips in a bundle
The cables within the cabinet shall be laid in a far-near sequence, i.e., the farthest
cables shall be laid first, placed at the bottom layer of the wiring area, and cable
interleaving shall be avoided during wire laying, as illustrated in Fig. 3-26.
Wire clip
Cable
Rack wiring area
Side Front
Rack wiring area
Wire clipWire clip
Cable Cable
Side Front
Fig. 3-26 Requirements for cable layout within the rack
3.9 Installation check
3.9.1 Cabinet check
After the installation of the cabinet, check the following items:
1. It should stand upright and firm, look nice and tidy;
2. The vertical inclination should be less than 5º;
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3. The panels of the cabinet should lie on the same horizontal plane, without any
concave or convex;
4. Check whether all screws are tightened, whether any flat washer, spring washer are
missing or installed inversely;
5. Check the cabinet for any unnecessary materials, and clear them up if any;
6. Check for any damages or paint loss on the cabinet caused by knocking;
7. Check whether the cabinet is clean, and remove dust and stains if any;
8. Check whether it is easy to close or open the door of the cabinet, whether the lock
of the door fails.
3.9.2 Check of electrical connection
After the electrical connection of the combined power supply system is completed,
check the electrical connections against the following items:
1. Check on drop lines and power distribution: whether the chromatogram for AC
lines is standard, whether there is any loosening on the original wiring of the
cabinet, whether the safety identity for the power distribution unit is complete,
please refer to the manual for the wiring and using of AC lines;
2. Check the output, battery connection points, serial number, line sequence, polarity,
stability of the cable connection points, correctness and reliability of the mother
busbar connection, then recheck the polarity and sequence of battery
connection;
3. Check whether the lightning-proof grounding cable, work grounding cable and
chassis grounding cable are connected correctly and whether the contact is
reliable;
4. Check the module and monitoring lines of the monitoring unit, and check the input
and output lines of the rectifier;
5. Check whether the lightning protection switches are securely switched on, whether
other switches are disconnected;
5. Check whether the wiring is tidy, and whether cable binding conforms to the processing specifications;
6. Check whether the installation and wiring are conducive to future reform,
expansion and maintenance of the system.
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4. System Debugging
4.1 Starting up and shutting down the system
4.1.1 Check before start-up
1. Confirm that the input switch outside the equipment is off.
2. Disconnect the mains input breaker, rectifier air switch of the distribution layer,
and air switch of the standby AC output, and then turn on the lightning
protection switch. Be sure that the power supply switch, battery, load fuse, and
load breaker on the back panel of the monitoring unit have been disconnected.
3. Check whether the AC drop lines, the grounding lines, and the distribution lines
inside the cabinet are correctly and reliably connected, and whether the bolts
are loosened.
4. Measure the resistance between the AC input and output phase lines, between the
phase lines and zero lines, and between the phase lines and ground of the AC
input breaker (or contactor), and be sure of no short circuit.
5. Use the multimeter to check if there is any short circuit between the output port of
the standby AC output breaker and the zero line.
6. Use the multimeter to check if the AC voltage of system power supply is within
the required range.
4.1.2 Debugging procedures
The cabinet, the rectifier and the monitoring unit are exposed to concussions to some
extent in long distance transportation and re-assembly. And after the power system is
reassembled, assembly or connection error may exist, so if the whole system is hastily
powered on and started, major accidents might occur, including damages of the whole
system. Therefore, after the assembly, the system should be carefully debugged, that is,
to debug the system step by step, so as to observe while debugging, power off the
system immediately on any abnormality, and go on with the debugging until after faults
are pinned down and cleared.
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The testing flow is as follows: AC power distribution unit debugging-rectifier
debugging-monitoring unit debugging-battery connection for DC power distribution
unit-system test-powering on the communication equipment-adjusting the system to its
optimal running mode.
4.1.3 Startup procedures
1. Close the AC input switch of the external power supply system.
Close the external mains supply input switch and lead in the mains supply for
the power system. When contactor is employed for AC input of the system, and
the voltage of mains supply is within the normal voltage working range, the
contactor will be automatically closed, at the time, there have been mains
supplies for the AC input and AC standby output of the system; when the
voltage of the mains supply exceeds the working range of the system, the
contactor will not close (in the case of contactor for the AC input, the voltage
for the closing point of the contactor is 154VAC).
2. When the AC input is in the air switch mode, close the main switch and check
whether AC input voltage and each shunt voltage of the standby output are
normal.
3. Start up the rectifier.
Once the AC input voltage is confirmed to be normal, close the power switches
of respective rectifier modules on the AC power distribution layer to start up the
switch rectifier modules one by one. Observe whether each rectifier works
normally and measure the output voltage of each rectifier. Only after all are in
normal status, can the input switches of all the rectifiers be closed at the same
time. See Section 4.3 for starting up the rectifier.
4. Start up the monitoring unit.
Close the power supply switch on the backplane of the monitoring unit, and set
the working parameters of the system according to the correct method and
procedures. Refer to Section 4.4 for the method of relevant setting.
5. Load the loading equipment
Confirm that the system works normally and various parameters are up to
requirements, shut down the system by the sequence as described in 4.1.4,
Chapter 4. System Debugging
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connect the load, start up the system, and connect the battery, so that the system
enters the normal working state. For adding load and connecting batteries,
please refer to Section 4.6.
4.1.4 Shutdown sequence
1. Disconnect the load and battery.
2. Switch off the power supply and rectifiers of the monitoring unit.
3. Disconnect the main AC input switch.
4. Disconnect the exterior AC input switch.
4.2 Testing the AC distribution unit 1. AC input switchover
If two lines of input are provided by the user, a switchover experiment of two
power supplies can be performed via the two air switches of the AC input or AC
contactors. To input the dual air switches, their switches should be manually
turned on/off to check whether the two input paths are normal. In the dual
contactor input mode, the system will automatically judge whether the first
mains supply is normal, if it isn’t, the system will switch to the second mains
supply or diesel generator.
2. Parameter and state test
Check each line of mains supply voltage and phase-A current in the monitoring
unit, which shall be in compliance with the actual values. If for the AC input
current, there is a rather large deviation between the displayed value and the
actual value (for specific deviation value, refer to the detection precision test of
Engineering Document of ZXDU500 500A Combined Power Supply System),
adjust the zero and slope of AC input current in system parameter setting of the
monitoring unit.
When the overall system works normally, disconnect the AC power supply, and
“Mains supply failure” will appear in the “Alarm data display” menu of the
monitoring unit.
3. AC phase loss, AC over-voltage and AC under-voltage alarms and automatic
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protection
By debugging AC phase loss, AC over-/under-voltage alarms and automatic
protection, the system is tested on whether it can produce normal alarms and
react normally upon abnormal power supply. These items have undergone strict
test upon ex-factory, so debugging of these items may be skipped if no proper
condition is available on user’s site.
4.3 Debugging the rectifier 1. After the system passes the preliminary test on the AC power distribution unit and
works normally, it is time to power on the rectifier. Prior to powering on the
rectifier, disconnect all the air switches or fuses of DC load shunts, and turn off
the monitoring unit.
2. Prior to powering on the rectifier, make sure that there is no short circuit for the
input and output of the module, there is no loosening or damage on the
components within the rectifier, and the electrical connection is correct.
3. The AC input switch of the rectifier is at the AC distribution layer of the lower part
of the cabinet, and each rectifier corresponds to one AC input air switch.
Rectifiers should be started up one by one, so as to check whether each of them
works normally. After the power-on of the rectifier, there will be a delay of
startup to protect the rectifier. The green light will be lit during delayed startup,
and the red light will also flash for several seconds at the same time. After the
delayed startup completes, and the system works normally, the green light will
be lit, while the red light will be extinguished. Adjust the regulator
potentiometer on the panel of the rectifier and set the output voltage of each
rectifier to 53.5V.
4. After confirming that each rectifier is able to start up normally and the output
voltage becomes normal, close all AC input switches of the active rectifier so
the rectifiers of the system can work in the equalized current state. Observe the
change of the DC output voltage, and check whether there is any change in the
output voltage after the rectifier works in equalized current state. If there is
obvious output voltage drift, spot and fix the rectifier with poor current
equalization effect.
Chapter 4. System Debugging
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4.4 Testing the monitoring unit
4.4.1 Overview of the monitoring unit
The monitoring unit is responsible for the centralized management of AC distribution,
DC distribution, rectifier set and battery of the system. The monitoring unit collects the
running data of the system in real time and monitors the working status of the system.
When the system falls faulty, it gives out audible and visual alarms in addition to
proper protection measures.
The LCD and LED indicators on the panel of the supervision unit can display the
system’s output current, output voltage, battery current and all kinds of alarm
information. In addition, necessary parameters can be set through the keyboard on the
panel to fulfill necessary control.
The running data and working status of the system, instead of just being reflected
locally, can also be reported to the upper-level monitoring unit through transmission.
The supervision unit also receives commands from the upper-level machine, so as to
query and control the system to realize the “3-tele” functions.
The monitoring unit employs LCD, with English operation interface. The indicator
light on the front panel of the monitoring unit displays the current working status of the
system, please refer to Fig. 2-14 and Table 2-5. When there is any alarm, both the
buzzer and the alarm indicator light will give out audible and visual alarms, and display
the alarm information on LCD.
The reset button is located within the small hole below the communication indicator on
the panel of the monitoring unit, press this key to reset the monitoring unit. The system
can continue to work normally without the monitoring unit, however, the “3-tele”
functions will be disabled, with the standby battery pack being in the floating charge
status.
4.4.2 Powering on the monitoring unit
The monitoring unit examines the working state of various units in the combined
power supply system via the micro-processor and the interface circuit. Then it performs
analysis and processing, and delivers the information to the near-end monitoring
terminal or the remote monitoring center via the RS232 port, so as to fulfill the 3-teles
function and unattendedness.
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The monitoring unit is of the drawer structure that is convenient for maintenance and
installation. The front panel serves as the operation and observation panel. On the back
panel are installed the testing cables, communications cables, working power supply
for the monitoring unit, and signal lines.
When there is rated DC voltage on the DC busbar of the rectifier cabinet, close the
power supply input switch on the back panel of the monitoring unit, therefore, the
monitoring unit is powered on and begins to work, and the main menu will be
displayed on the LCD, and operate the keyboard to observe the corresponding contents
of the display. If there is no normal display, it is necessary to check and maintain the
supervision unit.
Note: After installation of the system, we must perform correct settings for the
monitoring unit, so that the system can work normally. Refer to Section 4.4.6 for
the method for relevant setting.
4.4.3 Enter system interface
The monitoring unit of the ZXDU500 500A combined power supply system employs
V3.0 monitoring software. After the input switch of the monitoring unit is closed or the
monitoring unit is reset, the display will show in turn two start-up interfaces, as shown
in Fig. 4-1 and Fig. 4-2.
ZTE CORPORATION
Fig. 4-1 Start-up interface 1 of the monitoring unit
ZXDU500 V3.0
Software version: V3.0
Fig. 4-2 Start-up interface 2 of the monitoring unit
When the start-up interface is closed, the monitoring unit displays its main menu
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interface, as shown in Fig. 4-3.
Real-time data displayAlarm data displaySystem parameter settingSystem maintenance & control
Fig. 4-3 Main menu interface of the monitoring unit
4.4.4 Real time data display
Press PgUp or PgDn on the main menu interface of the monitoring unit, and move the
finger cursor to the real-time data-display menu items, press Enter, then the system
enters the real-time data displaying menu. There are totally eight interfaces in the
real-time data-displaying menu, they respectively display the system parameters such
as input, output, rectifier and environment. Interfaces for real-time data display can be
switched over via key operations of PgUp and PgDn. Press Esc to return to the main
menu.
The first screen of real-time data display is shown in Fig. 4-4.
System output voltage (V)Total system output current (A)
Next time of equalized charging: 2002-05-30Current time: 2002-02-20 17:55
53.526
Fig. 4-4 First screen of real-time data display
The second screen of real-time data display is shown in Fig. 4-5.
2313.8
AC phase A voltage (V) 230232
AC phase C voltage (V)AC phase B voltage (V)
AC phase A Current (A)
Fig. 4-5 Second screen of real-time data display
The third screen of real-time data display is shown in Fig. 4-6.
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Charging mode:Voltage of battery I (V)Charging current of battery I (A)Temperature of battery I (℃)
Float charging
33
53.5V0
Fig. 4-6 Third screen of real-time data display
The fourth screen of real-time data display is shown in Fig. 4-7.
Voltage of battery II (V)Charging current of battery II (A)Temperature of battery II (℃) 33
53.5V2
Fig. 4-7 Fourth screen of real-time data display
The fifth screen of real-time data display is shown in Fig. 4-8.
Voltage of battery III (V)Charging current of battery III (A)Temperature of battery III(℃) 25
53.5V0
Fig. 4-8 Fifth screen of real-time data display
The sixth screen of real-time data display is shown in Fig. 4-9.
Environment boardEnvironmental temperature (℃)
Environmental humidity (%)Status of input alarm relay contact:
Available2550
Fig. 4-9 Sixth screen of real-time data display
The seventh screen of real-time data display is shown in Fig. 4-10. For the rectifier
status item on this interface, the number of rectifiers displayed on the interface is the
same as the actual number of rectifiers of the system. If the rectifier at position 02 is
Chapter 4. System Debugging
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not installed, number “02” will be missing on the interface.
Rectifier status
Power supply mode:AC supporting output switch:
01Diesel generator
050403
Fig. 4-10 Seventh screen of real-time data display
The eighth screen of real-time data display is shown in Fig. 4-11.
Equipment type:Software version:Software date: 2001.12.05
V3.00ZXDU500V3.0
Fig. 4-11 Eighth screen of real-time data display
All the data above will be refreshed in real time. Press Return to return to the main
menu as shown in Fig. 4-3.
4.4.5 Alarm data display
As shown in Fig. 4-3, press PgUp or PgDn on the main menu interface of the
monitoring unit, and move the finger cursor to the “Alarm data display” menu items,
press Enter, then the system enters the “Alarm data display” menu. Each alarm
occupies a page, and if the alarm information exceeds one page, interfaces for real-time
data display can be switched over via key operations of PgUp and PgDn. Press Esc to
return to the main menu.
The interface for alarm data display is as shown in Fig. 4-12.
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Real-time alarm: 1Lightning arrester return circuit damaged
Start: 2002-01-22 15:05:046
1Historical alarm: 5
Fig. 4-12 Alarm data display interface 1
As an interface for real-time display, alarms displayed on this interface have only the
start, but not the end time. “1” in the upper right corner of the interface indicates that
this interface is the first one for alarm data display, and “6” in the lower right means
that there are totally six interfaces. Fig. 4-13 displays the contents of interface 2 for
history alarm data display.
Real-time alarm: 1Alarm of rectifier 04Start: 2002-02-22 15:21:04
6
2Historical alarm: 5
Finish: 2002-02-22 15:22:31
Fig. 4-13 Alarm data display interface 2
Other interfaces displaying the history alarm information are similar to interface 2 of
Fig. 4-13. What they display is the start and end time of the other four history alarms
and can be viewed by key operations of PgUp and PgDn. To return to the main menu,
press Esc.
4.4.6 System parameter setting
As shown in Fig. 4-3, press PgUp or PgDn on the main menu interface of the
monitoring unit, and move the finger cursor to the “Setting system parameters” menu
items, press Enter, then the “Input Password” interface pops up, as shown in Fig. 4-14.
To enter “Setting system parameters”, the operation password must be input correctly,
then parameters can be modified and set.
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OK
Please enter password:
0 0 00
Fig. 4-14 Operation interface 1 for password inputting
In the monitoring unit operation of this system, for operations concerning the value
change, a symbol or will be shown in the upper right corner of the screen to
indicate whether the ongoing operation is about changing the option or value. See
in this interface. Among them, “ ” represents the option for the current operation. At
the time, press PgDn or PgUp to move the cursor between various functional areas, e.g.,
“0000” and “OK” functional keys as shown in Fig. 4-14; The symbol “ ” indicates
the current operation is about the parameters, now by pressing PgUp and PgDn the
number can be modified. As shown in Fig. 4-14, the cursor stays at the first number
and it is the symbol “ ” in the upper right corner, now the number may be changed by
pressing the PgUp and PgDn keys. After correct numbers are set, press Enter, the
interface as shown in Fig.4-15 will pop up. Note that in the narration of this article, the
“Enter” button is on the panel of the monitoring unit, while the “OK” refers to the
confirmation key in the monitoring interface.
OK
Please enter password:
9 0 00
Fig. 4-15 Operation interface 2 for password inputting
As shown in Fig. 4-15, move the cursor to the second number. To modify this number,
click “OK” to change the symbol “ ” to “ ”, then press PgUp or PgDn to change
this number into a desired one. Modify the four numbers in turn, then move the
cursor to OK, as shown in Fig. 4-16. Press “OK”, enter the parameter setting menu
when the input password is correct; if the input password is wrong, the system will
give prompt “Wrong input password”, and it is necessary to input the correct password
before entering the system parameter setting menu. The factory-set password of this
combined power supply equipment is 0000.
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Please enter password:
9 9 9 9
OK
Fig. 4-16 Operation interface 3 for password inputting
There are 31 items for setting system parameters, each with a separate setting interface.
Now let’s see the process of parameter setting with the first parameter setting item as
an example. The first parameter setting interface is shown in Fig. 4-17.
Parameter setting:
Alarm threshold for high AC voltage (V)
260
Help01
OK
Fig. 4-17 System parameter setting interface 1 for Item 01
Now the cursor stays at the location of number 01. To view or modify the parameters
of other setting items, press PgUp or PgDn, then the interface may switch among the
31 setting items. To modify the content of this item, click OK in the current state of Fig.
4-16, to pop up an interface as shown in Fig. 4-18.
Parameter setting:
Alarm threshold for AC high voltage (V) Help01
OK260
Fig. 4-18 System parameter setting interface 2 for Item 01
Let the cursor stay at the location of the high AC voltage threshold, the symbol at the
upper right corner for parameter setting is “ ”, whose meaning has been introduced in
the operation password input part in this section.
For operations concerning the value change, a symbol or will be shown in the
upper right corner of the screen to indicate whether the ongoing operation is about
changing the option or value.
Chapter 4. System Debugging
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Of the two symbols, “ ” means that the current operation is about the option and at
this time, through PgUp and PgDn, the cursor may move between the function areas,
such as serial number “01”, number ”260”, “OK” and “HELP”.
When “ ” is displayed at the upper right corner of the interface, it means the current
operation is in the state of parameter modification, at the time, we can operate PgUp or
PgDn to increase or decrease the number pointed by the cursor.
To modify the number of the alarm in this interface, press the “OK” button to change
the symbol “ ” to “ ”, then press PgUp or PgDn to change this number into a
desired one.
After modifying the number, press the OK button and move the cursor to OK in this
interface, as shown in Fig. 4-19.
Parameter setting:
Alarm threshold for high AC voltage (V) Help01
279 OK
Fig. 4-19 System parameter setting interface 3 for Item 01
In this interface, by pressing PgUp and PgDn, the cursor may be moved to HELP. Then
press OK to enter the HELP menu. The HELP menu gives description on the content or
scope of each setting item. The user may use the HELP menu to solve problems
encountered during parameter setting.
In the interface shown in Fig. 4-18, click OK to validate the modified content and the
system will automatically convert to the next setting item, as shown in Fig. 4-20.
Parameter setting:
Alarm threshold for AC low voltage (V) Help
180 OK
02
Fig. 4-20 System parameter setting interface for Item 02
In the “Setting system parameter” menu, if the user doesn’t press any key for 30s, the system will return to the main menu automatically. There are totally 31 items for
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parameter setting. For detailed setting contents and the text of the HELP menu, refer to Table 4-1.
Table 4-1 Setting of system parameters
S.N. Parameter Name Default value
Upper limit
Lower limit
Text of the “Help” menu
01 AC input high voltage alarm threshold (V)
260 300 240 Scope (240V~300V), higher than the AC high voltage alarm generated by the parameter
02 AC input low voltage alarm threshold (V)
180 200 160 Scope (160V~200V), lower than the AC low voltage alarm generated with the parameter
03 AC input high current alarm threshold (A)
60 80 50 Scope (50V~80V), higher than the AC high current alarm generated with the parameter
04 Output high voltage alarm threshold (V)
58.0 59.0 57.0 Scope (57V~59V), not lower than the equalized charging voltage by +1V, and higher than the high output voltage alarm generated with the parameter
05 Output low voltage alarm (V) 48.0 52.0 41.0 Scope (41V~52V), not higher than the equalized charging voltage by -1V, and lower than the low output voltage alarm generated with the parameter
06 Float-charging voltage (V) 53.5 58.0 42.0 Scope (42V~58V), not higher than the equalized charging voltage, not lower than the lower limit of output voltage alarm by +1V, and not lower than the alarm threshold for battery undervoltage by +1V, which will be set according to the actual conditions of the battery
07 Equalized-charging voltage (V)
56.4 58.0 42.0 Scope (42V~58V), not lower than the float charging voltage, and not higher than the alarm threshold for output voltage by –1V, which will be set according to the actual conditions of the battery
08 Test voltage (V) 46.0 48.0 42.0 Scope (42V~48V), place the battery in the discharging state when it is tested, so as to test the performance of the battery
09 Capacity of battery pack 1 (Ah)
100 2000 0 Scope (0AH~2000AH), set according to the actual conditions of the battery
10 Capacity of battery pack 2 (Ah)
100 2000 0 Scope (0AH~2000AH), set according to the actual conditions
11 Capacity of battery pack 3 (Ah)
0 2000 0 Scope (0AH~2000AH), set according to the actual conditions of the battery
12 Coefficient for battery charging current (A/Ah)
0.15 0.25 0.05 Scope (0.05A/AH~0.25A/AH), multiply the parameter with battery capacity, and you’ll get the maximum charging current for the battery
13 Battery temperature compensation coefficient (mv/℃/pc)
3 6 0 Scope (0mV/℃~6mV/℃), representing the temperature compensation coefficient for each battery, which will be set according to the actual conditions of the battery
14 Equalized-charging cycle of the battery
180 365 15 Scope (15 days~365 days), representing the designated time with the interval, and the battery shall be charged once for every cycle
15 Equalized-charging threshold capacity of the battery
0.85 0.95 0.6 Scope (0.6~0.95), means that if the ratio between the dynamic capacity and the rated capacity of the battery after power off is lower than the parameter, then equalized charge shall be performed after being powered on
Chapter 4. System Debugging
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Table 4-1 (Continued)
S.N. Parameter Name Default value
Upper limit
Lower limit
Text of the “Help” menu
16 Battery under-voltage alarm threshold (V)
47.0 52.0 41.0 Scope (41V~52V), not higher than the float charging voltage by –1V, and not lower than the first-stage shutdown voltage by +1V. When it is lower than the parameter, low-voltage alarm of the battery will be given
17 First-stage shutdown voltage of the load (V)
46.0 47.0 40.0 Scope (40V~47V), not higher than battery undervoltage alarm threshold, and not lower than the second-stage power shut-down voltage, when it is lower than the parameter, the system will undergo first-stage shutdown
18 Second-stage shutdown voltage of the load (V)
45.0 47.0 40.0 Scope (40V~47V), not higher than first-stage shutdown voltage. When the DC voltage of the system is lower than the parameter, the system will undergo the second-stage power shutdown
19 Battery high temperature alarm threshold (℃)
40 55 30 Scope (30℃~55℃), when higher than the parameter, there will be alarm of high battery temperature
20 High ambient temperature alarm threshold (℃)
40 55 30 Scope (30℃~55℃), when higher than the parameter, there will be alarm of high ambient temperature
21 Low ambient temperature alarm threshold (℃)
-5 10 -20 Scope (-20℃~10℃), when lower than the parameter, there will be alarm of low ambient temperature
22 High ambient humidity alarm threshold (%)
90 100 80 Scope (80%~100%), when higher than the parameter, there will be alarm of high ambient humidity
23 Low ambient humidity alarm threshold (%)
20 40 10 Scope (10%~40%), when lower than the parameter, there will be alarm of low ambient humidity
24 Equipment address No. 1 254 1 Scope (1~254) 25 Baud rate (bps) 1200 9600 1200 Baud rate in case of RS232 communications,
1200 for the lowest, and 9600 for the highest26 Normal state of input alarm
relay contact 1 1 0 The parameter indicates the normal state of
the alarm relay contact. When the supervision alarm relay contact is abnormal, the system will give alarm
27 Alarming pager number The parameter is used to dial through the pager when the system detects any alarm. The symbol “,” means delay, while “.” means no value
28 Alarming phone number The parameter is used by the system to report detected alarms, “,” means time delay, while “.” Means no value
29 Menu password setting 0000 9999 To set menu password 30 Alarm relay contact
corresponding to the failure type
The menu is used to define the alarm type corresponding to each line of alarm relay contact
31 Time setting Used to set system date and time
The correct password has to be input before setting system parameters, so as to enter the hidden menu for parameter setting. In the hidden menu, more setting items are
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added except those mentioned above, as shown in Table 4-2. These items have already been adjusted to their optimal values based on the configuration of the equipment before delivery. So the user is freed of the trouble of readjusting the data in the hidden menu when using the equipment. But after the system capacity is expanded, or if the real-time data display has a serious deviation, zero and slope of relevant parameters then have to be readjusted.
Table 4-2 List of additional items and HELP menu of the hidden menu for system parameter setting
S.N. Parameter Name Default value
Upper limit
Lower limit
Text of the “Help” menu
01 Input current zero adjustment (A)
0 10 -10 Scope (-10A~10A), used to adjust the zero point of AC current sensor
02 Input current slope adjustment (%)
1 1.2 0.8 Scope (0.3%~3%), used to adjust the slope of AC current sensor
03 Zero point adjustment for the temperature of battery 1 (℃)
0 10 -10 Scope (-10℃~10℃), used to adjust the zero point of battery temperature sensor
04 Zero point adjustment for temperature of battery 2 (℃)
0 10 -10 Scope (-10℃~10℃), used to adjust the zero point of battery temperature sensor
05 Zero point adjustment for temperature of battery 3 (℃)
0 10 -10 Scope (-10℃~10℃), used to adjust the zero point of battery temperature sensor
06 Load current zero adjustment (A)
0 10 -10 Scope (-10A~10A), used to adjust the zero point of load current sensor
07 Load current slope adjustment (%)
1 3 0.3 Scope (0.3%~3%), used to adjust the slope of load current sensor
08 Zero point adjustment for current of battery 1 (A)
0 10 -10 Scope (-10A~10A), used to adjust the zero point of battery current sensor
09 Zero point adjustment for current of battery 2 (A)
0 10 -10 Scope (-10A~10A), used to adjust the zero point of battery current sensor
10 Zero point adjustment for current of battery 3 (A)
0 10 -10 Scope (-10A~10A), used to adjust the zero point of battery current sensor
11 Slope adjustment for current of battery 1 (%)
1 3 0.3 Scope (0.3%~3%), used to adjust the slope of battery current sensor
12 Slope adjustment for current of battery 2 (%)
1 3 0.3 Scope (0.3%~3%), used to adjust the slope of battery current sensor
13 Slope adjustment for current of battery 3 (%)
1 3 0.3 Scope (0.3%~3%), used to adjust the slope of battery current sensor
14 Ambient temperature zero adjustment (℃)
0 10 -10 Scope (-10℃~10℃), used to adjust the zero point of ambient temperature sensor
15 Ambient humidity zero adjustment (%)
0 10 -10 Scope (-10%~10%), used to adjust the zero point of ambient humidity sensor
16 Total circuits of the load 20 20 0 Scope (0~20), representing the total load lines of the system, and users can set the parameter according to the specific line connection mode
17 First-stage power shut-down circuits
8 20 0 Scope (0~20), representing the load lines that can be disconnected during the first-stage shut-down, and users can set the parameter according to the specific line connection mode
18 Second-stage power shut-down circuits
12 20 0 Scope (0~20), representing the load lines that can be disconnected during the second-stage shut-down, and users can set the parameter according to the specific line connection mode
Chapter 4. System Debugging
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4.4.7 “System maintenance & control” menu
As shown in Fig. 4-3, press PgUp or PgDn on the main menu interface of the
monitoring unit, and move the finger cursor to the “System maintenance & control”
menu item, press the OK button, then the “Input Password” interface pops up, as
shown in Fig. 4-14. To enter “System maintenance & control”, the operation password
must be input correctly, then parameters can be modified and set. The factory-set
password of “System maintenance & control” is 0000. After the password is input
correctly, enter the submenu of “System maintenance & control”, as shown in Fig.
4-21.
System maintenance & control:
Battery charging mode
Float charging OK
01
Fig. 4-21 Submenu 01 of the “System maintenance & control” menu
The usage of the “System maintenance & control” menu is very similar to that of the
“System parameter setting” menu, so please refer to the related contents in the section
of “Setting system parameters”. The battery charging mode can be selected among the
“equalized charging”, “float charging” and “test”.
In the “System maintenance & control” menu, if the user doesn’t press any key for 30s,
the system will return to the main menu automatically.
Other submenus (from item 02 to item 11) of the “System maintenance & control”
menu are control menus for the states of 10 rectifiers in the system, as shown in Fig.
4-22 and Fig. 4-23.
System maintenance & control:
Rectifier 01
Start up OK
02
Fig. 4-22 Submenu 02 of the “System maintenance & control” menu
The status of the rectifier can be selected between “Start-up” and “Shutdown”, after
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selection, click OK to make the settings effective.
If a rectifier position (e.g., position 02) in the system is empty without any rectifier
inserted, the submenu of the “System maintenance & control” menu is shown in Fig.
4-22. Then the status of this rectifier cannot be changed.
System maintenance & control:
Rectifier 02
Unavailable OK
03
Fig. 4-23 Submenu 03 of the “System maintenance & control” menu
Submenu 12 of the “System maintenance & control” menu is the language selection
interface, as shown in Fig. 4-24.
System maintenance & control:
Language
English OK
12
Fig. 4-24 Submenu 12 of the “System maintenance & control” menu
The interface language of the monitoring unit is “English”.
4.5 Background monitoring This power supply system can be monitored remotely through the “ZTE Centralized
Power Supply Monitoring System” via modem, or in the local background mode via
RS232. Through background monitoring, all key parameters of the power supply can
be detected and remotely controlled. The background monitoring system is realized
through the information exchange between the monitoring unit of the communication
equipment/power supply system and the background PC, and the connection is shown
in Fig. 4-25.
Chapter 4. System Debugging
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Background PC Monitoring unitRS232
Modem or SCM,etc.
Fig. 4-25 Background monitoring
Working principle: the background computer sends commands to the monitoring unit
as per the regulations of the communications protocol, and the monitoring unit will
return the needed data to the background computer as per the commands it receives.
Through the above communication process, the background computer implements the
3-tele functions (telemetry, tele-control and tele-signaling), the centralized monitoring
and automation management services of the power system.
For the use of the “ZTE Centralized Power Supply Monitoring System”, please refer to
the User Manual of the background software for system configuration. The following
should be debugged for the remote monitoring:
1. Properly connect the monitoring unit with the background PC according to the
networking mode;
2. Check whether the monitoring unit can normally communicate with the
background PC;
3. Query the real-time display data of the power supply system from the background
PC, and the data should be in complete compliance with that displayed on the
LCD of the monitoring unit;
4. Check the alarm report function: extract a lightning protection chip, and alarm
information shall be reported;
5. On the background PC, control the start-up/shutdown of the rectifier of the power
supply system, and the conversion of the float charging and equalized charging.
The power supply system should be able to properly execute the above
commands coming from the background PC.
4.6 DC power distribution unit debugging and battery connection After the AC power distribution unit, rectifiers and monitoring unit are debugged
normally, the batteries can be connected and the DC power distribution unit can be
debugged.
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4.6.1 Connecting batteries
1. Start up some rectifiers and the monitoring unit to let the system be in the float
charging status;
2. Use a multimeter to check whether the voltage polarity of the fuse of the two
battery packs is consistent with that of the busbar;
3. Measure the voltages of the two battery packs respectively, and use a fuse
extractor to press the fuse of the battery pack with a lower voltage into the fuse
base;
4. Use the power supply system to charge this battery pack. The system will
automatically charge up this battery pack to make its voltage transferred to the
voltage value of the other battery pack;
5. Measure the voltages of the two battery packs, and when the difference between
them is less than 0.5V, use a fuse extractor to press the fuse of the other battery
pack into its base.
If there is a third battery pack configured for the user, the method to connect the third
battery pack is similar to that for the second battery pack.
Note:
1. If there is only one pack of battery, it shall be connected to the fuse base of
battery 1.
2. If two packs of batteries are connected, be sure that the open-circuit voltage
of the two groups of batteries is almost the same, otherwise, the two lines of
batteries may charge each other, thus resulting in danger.
4.6.2 Load the loading equipment
Use a multimeter to check the system’s DC loading output port to see whether its
voltage is normal, whether the polarity is correct, whether it’s consistent with the label
of the cable, and whether the loading cable is shorted.
Under normal circumstances, use a load fuse handle to connect the corresponding load
fuse core into the fuse base of the corresponding tributary, or close the fuse switch of
the corresponding tributary, so as to put the communications equipment through. Then
check whether the input voltage at the two terminals of the communications equipment
is normal, if yes, turn on the equipment for operation.
Chapter 4. System Debugging
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Note: important loads can be only connected after qualified testing of the system.
4.7 Debug the whole system After all parts of the system prove to be normal after power on, the whole system
testing is used to perform comprehensive test and setting for the system, so as to check
whether various configurations of the system can run normally, whether the parameters
are correctly and appropriately set up, whether the monitoring unit can effectively and
reliably measure, control and communicate with various parts of the system, and
whether the monitoring background can perform remote monitoring on the system, etc.
Once the whole system is debugged and all parts of the system are working normally,
fill out the relevant test forms for acceptance by the user.
4.7.1 Set system parameters
After the system is powered on, operate the monitoring unit to check various
parameters of the system. Some parameters (e.g., the battery capacity, battery
charge/discharge management parameter, and rectifier current-limiting point) need to
be set over again with reference to the actual condition of the user and as required by
the user. When setting parameters, check them one by one with what listed in forms 4-1
and 4-2, and set those in need of re-set. Note to fill the relevant modified settings into
forms of the project document to save the data.
4.7.2 Test data detection precision
After the whole power supply system is powered on and begins to work, operate the
monitoring unit to enter the real-time data display menu to view whether each item
displayed is in compliance with the actual value. If the difference between the tested
data and the actual value exceeds the range stipulated, find the reason for further
improvement.
For the test contents and requirements, please refer to Engineering Document of
ZXDU500 500A Combined Power Supply.
4.7.3 Test system function and alarm protection performance
Check whether various functions of the system are normal, whether various protection
alarm functions of the monitoring system can timely and reliably work. If any function
fails, check the system and clear the fault.
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For the test contents and requirements, please refer to Engineering Document of
ZXDU500 500A Combined Power Supply.
4.7.4 Test the current equalization characteristic of the system
While debugging a single rectifier, the system has to adjust the output voltage of each
rectifier as to be closely the same. Thereby, the system can automatically implement
the current equalization when all rectifiers are in service.
Observe the output current of each rectifier when the system has certain loads.
Segment indicators are used to display the system current. Totally ten segment LED
indicators are available, and each of them stands for a 5A current. If the difference
between the numbers of LED indicators for any two rectifiers is equal to or less than 1,
the current equalization of the system is qualified. That is to say, the difference
between the output currents of the two rectifiers is less than 5A. If the difference
between the number of segment indicators is larger than 1, the system needs to be
processed due to the insufficient current equalization.
If the current equalization deviation is not up to the requirement, adjust the
potentiometer on the panel of the corresponding rectifier until the current value falls
within the current equalization deviation range.
For testing of the system current equalization feature, the current value can also be
obtained through the current test hole on the rectifier panel. Testing method: use a
multimeter to test the voltage Vi between panel “I” and “COM”, and the relationship
between the output current of the rectifier and Vi is 10A corresponding to 1.5V. If the
difference between the output currents of any two rectifiers is less than 5A, the system
is OK in the current equalization. The current equalization index of the rectifier is
meaningful only when the load current of the system is larger than 20% of the system’s
rated output current. For the test contents and requirements, please refer to
Engineering Document of ZXDU500 500A Combined Power Supply.
4.8 System acceptance Test and accept the system according to the Standard YD5079-99 “Acceptance Method
of Posts and Telecommunications Project” after the project is completed.
Chapter 4. System Debugging
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4.8.1 Apply for preliminary test
After the ZXDU500 500A combined power supply system is completed in engineering
as per the construction drawing, we shall perform overall debugging and parameter
testing. If all kinds of functions and specifications prove to be qualified, the
construction unit shall apply to the owner for acceptance. Fill out the Preliminary Test
Application Report.
For the detailed contents of Preliminary Test Application Report, please refer to
Engineering Document of ZXDU Combined Power Supply System.
4.8.2 Installation acceptance
The personnel from ZTE Corporation will cooperate with those from the user for the
joint acceptance, for the contents of the installation acceptance, please refer to
Engineering Document of ZXDU500 500A Combined Power Supply System.
Check the contents in the project documents item by item, fill out the forms, and then
the two parties shall sign for confirmation.
4.8.3 Acceptance report of commissioning
Test respective indexes of the system with reference to the Engineering Document for
ZXDU500 500A Combined Power Supply System, as well as conditions on site and
actual configurations of the user, and then fill out the form with the actual test results.
4.8.4 Prepare relevant document
Prepare relevant documents to be accepted by the user, and save the acceptance record.
When ZTE Corporation asks the user to test and accept the power supply system, the
Engineering Document for ZXDU Combined Power Supply System should be filled out
carefully, and related acceptance personnel have to be asked to sign for confirmation
for those places needing signatures from various parties. One copy of the document is
to be kept by the user after the project is finished and necessary signatures are affixed.
4.8.5 Acceptance
The engineering construction personnel from both the user and ZTE Corporation shall
join hands to assess the preliminary acceptance and system running conditions, fill out
the “Certificate for Preliminary Engineering Acceptance” and the “Handover Report”
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when they regard that the equipment is up to the requirements for the contract, and then
give a conclusion on the engineering. At the same time, the “Return Receipt for
Equipment Commissioning” needs to filled out and delivered to the local office of ZTE
Corporation. All done. Please refer to Engineering Document for ZXDU Combined
Power Supply System.
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5. System Usage
5.1 System power on After the installation and debugging of the power supply system, the equipment is
usually in standby status. When necessary, simple power-on operation can put the
equipment into operation.
5.1.1 System startup
Operate according to the following procedures in system startup to make sure that the
system starts and works smoothly:
1. Make sure the AC input switch of the rectifier is turned off so that the system can
start without load;
2. Close the main AC input switch;
3. Check whether the AC input is normal, and troubleshoot (if any fault) before the
following operations;
4. After the AC input is normal, turn on the input switches of respective rectifier
modules to start them one by one. Check whether all rectifier modules can start
normally;
5. Turn on the power switch of the monitoring unit and observe the LCD to see
whether the parameters of the system are normal. Set the system work
parameters as required when the system is in the normal state;
6. After the system is confirmed to operate normally and the various parameters have
been measured to meet the requirements, turn off the main AC input switch to
externally cut off AC power supply. Then connect the load, start up the system,
and connect the battery;
7. During the system operation, the maintenance personnel should keep an eye on the
system information supplied by the monitoring system, and process the alarms
as soon as they occur.
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5.1.2 System shut-down
System shutdown generally follows the procedures below:
1. Disconnect the load and battery;
2. Turn off respective rectifier modules and the input switch of the monitoring unit;
3. Turn off the AC mains switch of the system;
4. Turn off the input disconnector outside the system.
5.2 Use of the rectifier
5.2.1 Rectifier backup
Hot backup is recommended for the rectifier configured for the ZXDU500 500A
combined power supply system. That is, the rectifiers are not turned off when the
system output current load is low, so that all the rectifiers of the system are in the
working state. If the user prefers the cold backup mode, please remove the rectifier
from the system and keep it properly. If the AC input switch of the rectifier is turned
off without removing the rectifiers, the system will display “the rectifier alarm”. The
alarm buzzer of the system will sound and the alarm indicator will be lit on.
5.2.2 Capacity expansion of the rectifier
1. Dismantle blank panels. When the power supply system configuration is smaller
than the rated capacity, there are some idle installation slots on some rectifiers
of the cabinet, generally, blank panels are employed for decoration of the idle
slots in order not to affect the smart outlook of the whole system. In case of
system capacity expansion, it is necessary to dismantle the corresponding blank
panels, so as to facilitate inserting new rectifiers.
2. Set the AC input switch corresponding to the position where a module is to be
installed to the “OFF ” state.
3. Push the module into the slot slowly and fix it tight. Set the mechanical lock
switch on the rectifier panel correctly when inserting the rectifier.
4. Close the corresponding AC input switch of this rectifier to make it work normally.
5. Repeat the above steps and install all the modules.
Chapter 5. System Usage
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6. Observe the current equalization effect of the system.
5.2.3 Replace the rectifier fan
If any fault occurs to the rectifier fan, it can also be replaced without dismounting the
rectifier. The replacing method of the fan is as follows:
1. Turn off the AC input switch of the rectifier whose fan is to be replaced;
2. Put your fingers into the small recess of the fan cover on the rectifier panel and
pull the fan cover outwards;
3. Remove the fan cover from the rectifier panel and take out the fan from its slot;
4. Unplug the power connector of the fan and take away the damaged fan;
5. Insert the power cable plug of the new fan into the power cable connector;
6. Push the fan into its slot, note not to make it face to the contrary direction;
7. Fix the fan cover and turn on the AC input switch of this rectifier.
5.3 Battery usage
5.3.1 Charge and discharge battery
Battery pack is an important power supply facility for uninterrupted power supply for
communications equipment. The battery pack is connected with the battery tributary of
the power supply system. When the mains supply is working normally, the power
supply system will perform float charging or equalized charging to the battery; In case
of blackout, the battery will supply power to the communications equipment connected
to the power supply system via the DC distribution unit of the power supply system.
The combined power supply system furnishes remote supervision for the
charging/discharging status, charging/discharging voltage, current and battery
temperature.
The battery pack for the 48V communications power comprises 24 serial batteries. The
nominal voltage for a single battery is 2V, the float charging voltage is 2.23V, the
equalized charging voltage is 2.35V. Generally speaking, the float charging voltage of
the battery pack is set at 53.5V (2.23V×24), while the equalized charging voltage is set
at 56.4V (2.35V×24). The float charging voltage and the equalized charging voltage
can be set in the monitoring unit of the combined power supply system, and the values
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shall not deviate too much from the standard values mentioned above.
When the system undergoes charging, the “Charging current ratio” shall not be more
than 0.2C (C represents the rated capacity of the battery), i.e., the charging current shall
not exceed 20% of the total battery capacity.
The power supply system performs whole-process supervision on battery discharging.
When the battery voltage is lower than the “Low battery voltage alarm threshold”, the
monitoring unit will give alarms; the battery keeps discharging, when the battery
voltage is lower than the “Power shutdown voltage of the first group of loads”, the load
equipment of the first-stage shutdown group of the system will be disconnected; when
the battery voltage is lower than the “Power shut-down voltage of the second group of
loads”, all the load equipment of the system will be disconnected, so as to protect the
battery from being over-discharge.
5.3.2 Choice of battery
The choice of battery capacity is determined by 2 factors, i.e., the needed current and
the expected battery discharge time for the power consumption equipment of the power
supply system. For example, the total current of the load equipment of the power
supply system is 80A, the expected continuous power supply time of battery during AC
blackout is 10h, then the battery capacity required by the system=total current of load
equipment × continuous power supply time during AC blackout=800Ah. Then add an
additional quantity on the theoretical battery capacity to get the actually needed battery
capacity. Higher instead of lower battery capacities are preferred as a principle,
however, the deviation shall not exceed 20% of the capacity needed by the electric
equipment.
Batteries of different capacities cannot be used in series, and batteries of different
voltages cannot be used in parallel.
Please don’t use battery packs of different capacities (the different currents during
charging may result in asynchronous saturation of capacities due to different
resistances within the batteries, thus giving rise to 2 packs of batteries of over-charge
and under-discharge; besides, there is to be mutual discharge of the 2 packs of
batteries during discharge).
Chapter 5. System Usage
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5.3.3 Matters for attention during usage and maintenance of batteries
1. When several battery packs are in parallel, the total capacity of the battery is the
sum of various packs of batteries. The power supply system can be connected
with 3 packs of batteries at the most. In calculating parameters such as the
current-limiting value of the rectifier, it is necessary to use the capacity of the
battery, and the battery capacity of the power supply system is the sum of the
capacities of various battery packs.
2. The temperature for using batteries is -10℃~ 45℃, the lifespan of the battery is in
the reverse ratio to the temperature of the battery, therefore, heat radiation shall
be taken into consideration in design when the battery is to be used in cases of
increased temperature, so as to avoid increased temperature of the battery
(when the battery temperature is on the increase, the polar plates will undergo
increased corrosion due to the sulphoric acid, thus reducing its lifespan). The
equipment rooms with available conditions shall be equipped with air
conditioning units, so as to lengthen the lifespan of the battery.
3. After the installation of the power supply system, the battery of the first time or out
of use for a long time shall be first charged before being used, for the battery is
subject to capacity loss due to long-time automatic discharge during storage,
and the performance cannot be resumed without charge first.
4. There shall be records for battery running, recording the voltage of a single battery,
the total voltage of the battery pack and the ambient temperature monthly. The
standard values shall be resumed in case of any deviation. The terminal voltage
of single battery packs shall be measured after equalized charging. The terminal
voltage of each battery shall be almost the same, which shall be higher than
1.8V. Those lower than 1.8V are called “Retarded battery”, which shall be
specially charged. If such batteries cannot recover in terms of performance,
new batteries of the same type and capacity shall be resorted to, thus avoiding
impact on the whole battery.
5. The battery pack shall be checked every year for its fixing connection wires etc. to
prevent accidents from happening, and it shall be fixed firmly periodically.
5.4 Alarm description and handling When the system fails, the monitoring unit will generate alarms according to the failure.
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All kinds of failures will be prompted by audible and visible means as well as text
messages.
When an alarm occurs, the red alarming lamps on the monitoring module light up, the
buzzer gives out alarming sounds, and alarming information is sent to the remote
monitoring center.
The rectifiers and the monitoring unit of the system are designed with sufficient
internal protection, so the normal running of the system will not be affected if a single
module fails.
When any rectifier fails, it automatically exits from service; when the monitoring unit
fails, the rectifier keeps working in the float charging mode, so that the system can still
work normally.
The monitoring unit will immediately send out audio-visual alarm signals when an
alarm occurs to the system. The user can view the specific alarm information and alarm
start time through the displayed alarm data of the monitoring unit. The maintenance
personnel should check the corresponding equipment according to the alarming
information prompted by the monitoring unit, so as to determine the failure type and
location, and take the corresponding measures.
5.4.1 Solutions to the alarms that affect the output of the system
If a fault occurs that affects the system output, such as too low voltage of the
accumulator battery, over-voltage/under-voltage of the output load, abnormal output of
the rectifier module, the load fuse broken, etc., please handle them in accordance with
Table 5-1.
Table 5-1 Alarms that affect the output and solutions
Symptoms Solutions Battery voltage is too low Cut off the battery circuit to protect the battery from over-discharge (automatic) Load over-voltage, under-voltage
Check the output voltage of each rectifier module and the work status of the loading equipment, and check whether the monitoring unit is damaged
Battery circuit is disconnected
Check whether the DC contactor is damaged, whether the monitoring unit is damaged, and whether the data checked by the monitoring unit is normal
The whole system fails to start up
If a fault occurs to the control loop of the AC power distribution unit or the AC input contactor is damaged (when configuring the contractor), check the AC input circuit of the supervision system or replace the AC contactor.
The rectifier is abnormal or damaged Replace the corresponding rectifier module.
Load fuse is blown out Check whether there is any short circuit of the load equipment, whether the work current of the load equipment exceeds the capacity of the fuse. Replace with a spare fuse after making sure there are no other problems.
Chapter 5. System Usage
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5.4.2 Alarms that do not affect the output of the system and their solutions
If a fault occurs that does not affect the power supply of the system, such as AC input
over/under voltage or lack (disconnection) of one phase, or the rectifier being
current-limited, the voltage of the accumulator battery pack being low (different from
too low voltage of the accumulator battery, when the system will cut off the loop of the
accumulator battery), or failure of the mains, the monitoring unit will also send the
corresponding alarm signals. The maintenance personnel shall, according to the prompt
information, check the equipment, determine the type and location of the fault, and
undertake the corresponding measures. Please refer to Table 5-2 for the failure
phenomena and remedies.
Table 5-2 Alarms that do not affect system output and their solutions
Symptoms Solutions
AC over and under
voltage
and phase loss
(disconnected )
First cut off the input, start the power generator set, or use the battery for supplying power till
the input gets normal. Check the input line and the external distribution screen,
input lines and external distribution board
The rectifier module
input is abnormal
or the output is
current-limited
Check the input switch of the rectifier module and monitor the output current of this module,
if faults occur to the internal parts of the rectifier module,
replace the module.
Mains supply outage Check if the power generator set is started, if not, start up the generator set
Low voltage of the
accumulator battery
Check whether the output voltage of the system is normal. If the power is cut off, start the
standby diesel generator.
The rectifier being
current limited
Check whether there is fault with the load, and judge whether the system is in the state of
charging. Check whether the rectifier fails,
if yes, replace it.
The monitoring unit is
abnormal Reset the monitoring unit, and remove for repair if the problem cannot be solved.
Without the monitoring unit the system can still work, but the failure information of the
system cannot be sent to the remote monitoring center, nor is there any indication of
monitored failure information at the local site.
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5.5 Adding DC Load
5.5.1 The use of fuse extractor
Usage of the handle of the fuse extractor is as follows:
1. Unplug the fuse
(1) Insert the bulge of the lower part of the fuse into the corresponding concave slot
under the fuse extractor according to the type of the fuse. Then insert the bulge
of the upper part of the fuse into the corresponding slot above the fuse
extractor;
(2) Slightly pull the fuse extractor upward, and integrate the fuse with the handle;
(3) Pull the handle of the fuse extractor outward with force, and the fuse will be
unplugged.
2. Plug the fuse
(1) First make the fuse and the handle become one according to the first steps of
“Unplug the fuse”;
(2) Pull the handle of the fuse extractor inward with force, and the fuse will be plugged
in place;
(3) Follow the following steps to separate the fuse and the handle.
3. Separate the fuse and handle
(1) Hold down the red button on the handle of the fuse extractor until the locking
spring tilts up;
(2) Pull the handle down to separate the handle and fuse.
Note: when installing fuse, users shall note that whether the fuse has been
installed to the designated position, and whether it is safe and fast.
5.5.2 Adding DC Load
During the initial installation and running period of the power supply equipment, often
not all the load is devoted for running, generally speaking, no power off is allowed
after load running, therefore, newly added load equipment must be operated with
power on. Install the new load equipment strictly according to the following procedure.
If there is any abnormality, check the cause and solve it immediately.
Chapter 5. System Usage
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The procedure of adding the DC load is as follows:
1. Make the engineering design and choose the load fuse or the air switch for use.
Note to match the capacity of this tributary with the capacity to be used.
2. Process and lay out the load connection cables, number them and mark them with
their polarities.
3. The wiring of the cable begins with the load end. The grounding cable should be
connected first, followed by the –48V output fuse or air switch.
4. Check the power polarity carefully and ensure there is no error or short circuit.
5. Make sure that the power switch of the load equipment is cut off.
6. Insert the fuse of this tributary to the combined power system or close the air
switch of this load.
7. Check on the load equipment whether the power voltage and polarity conform
with the practical values and requirements.
8. Then, supply power can be provided to the load equipment.
Note: when adding DC load, the tools used must be insulated, and the
corresponding measures shall be undertaken aimed at the accidents that may
happen.
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6. Maintenance & Management
6.1 Equipment room management 6.1.1 General requirements
Equipment room management includes equipment room environment safety
management and equipment management.
The basic tasks for environmental security management are as follows: such elements
as equipment room environmental temperature, relative humidity, cleanness, static
interference, noise, and heavy-current electromagnetic interference etc. shall meet the
requirements, so as to ensure stable performance, reliable running and safe production
of the power supply equipment, and ensure the normal power supply of the
communications equipment.
For the requirements on the environmental security management on the
communications equipment room, please refer to the “General rules for environmental
security management on communications equipment room” promulgated by the
General Directorate of Telecoms.
The power unit consists of the AC transformer, DC power distribution unit, rectifier
module, battery, generator group, and so on. The basic requirements on equipment
management are as follows: guarantee sound equipment mechanical performance, the
equipment’s electrical performance shall meet the requirements of the related standards,
the equipment shall run stably and reliably, and the technical documents and original
records related to the equipment shall be complete.
For the requirements on the power supply equipment management of communications
offices and stations, please refer to the “Maintenance specifications on communications
power supply” promulgated by telecommunications departments.
Maintenance/test items in power and battery equipment room management are shown
in Table 6.1 (only for reference).
Chapter 6. Maintenance & Management
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Table 6-1 Maintenance and test items concerning management on power battery equipment room
S.N. Maintenance/test item Period
1 Temperature and humidity check Day
2 Cleanness of the control room of the SPC equipment room and the common
communication equipment room.
Day
3 Indoors cleanness of the SPC equipment room Week
4 Surface cleaning of racks and desks in the equipment room Week
5 Temperature and humidity alarm performance check Week
6 Dusting or replacement of the filter (screen) of the air-conditioner Month
7 Resistance measurement of the anti-static workbench, floor, chair and strap Month
8 Lightning-proof device check (before the thunderstorm season) Year
9 Grounding cable check and grounding resistance test Year
10 Inflammable gas sensor check Year
11 Smoke and temperature sensors alarm check and fire auto-alarm device
check
Year
12 Gas fire device fixation Quarter
13 Equipment room dust particle content measurement
6.1.2 Management on unattended stations
The unattended equipment room includes the local telephone terminal exchange,
module exchange, transmission base station, relay station, power room and battery
room. General requirements of the management of the unattended station are as
follows:
1. There shall be people taking care of the stations (not on-site attendance), or tour
inspection by regions;
2. The unattended stations shall possess sound capabilities in fighting natural
disasters;
3. The unattended stations shall be sealed;
4. The temperature, humidity and cleanness and fire prevention measures of the
equipment room should meet requirements.
The requirements of unattended stations propose the following requirements on
equipment and power supply:
1. The power unit of the unattended equipment room should be stable and reliable,
the average no-failure interval of the rectifiers should be more than one year,
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and the function of processing the environmental information and the channel
used to transmitting this information must be configured;
2. Both automatic and manual methods shall be available for control over the power
supply of the unattended stations, and the power supply system shall have such
remote management functions as telecontrol, telemetry, telesignaling, etc.;
3. The unattended stations shall be equipped with automatic start-up engines and air
conditioning equipment.
6.2 Daily records Contents of the power and battery equipment room duties or equipment room
management system records mainly consist of the environment information (such as
temperature and humidity), AC power supply information (such as power line voltage
and frequency), DC power supply information (such as output voltage, current and
battery and load status information). Table 6-2 is the power and battery daily record
from (only for reference). Generally the interval of the manual record is two hours, and
the period of acquisition and record of the automatic monitoring system is 30 minutes.
Table 6-2 Daily records for power battery
Time Temper
ature
Humidi
ty
VA VB VC VO IO I battery
1
I battery
2
Remark
s
Abnormality records
(Alarm records)
6.3 Handling special cases
6.3.1 Blackout
AC power-off is the most ordinary case in the power supply system running. If the
duration of power-off is not long, the battery will shoulder the DC power supply; on
the contrary, if there is no apparent cause of power-off or the duration of power-off is
extremely long, it is necessary to start the diesel generator for power generation. It is
recommended to wait for over two minutes after start-up of the diesel generator, then
Chapter 6. Maintenance & Management
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switch it over to the power supply system, so as to reduce the possible impact on the
power supply equipment during start-up of the diesel generator.
Note: we will have to wait for the stabilization of the generator before using it to
supply power for the whole system.
6.3.2 AC over-voltage/under-voltage protection
The monitoring unit of the system will give the alarm information if the AC input
power exceeds the over-voltage alarm point or is below the under-voltage alarm point.
When the input AC voltage exceeds the over-voltage protection point or is below the
under-voltage protection point of the rectifier, the rectifier will shut down. In this case,
the system has no DC output and the battery will supply power to the load equipment.
A power system with double mains input is available for the AC input. When
over/under-voltage protection occurs, and if the double mains are input through the air
switch, it is necessary to manually switch the input to the AC supply loop with normal
voltage. If it is input through the contactor, the system will automatically switch to the
second mains (or the diesel generator) if the first mains voltage is abnormal. It is
normal that the AC power distribution unit cannot output AC power if the double AC
input of the AC power distribution unit exceeds the over-voltage point or is below the
under-voltage point. In this case, the battery will supply power to the load. Meanwhile,
closely follow up variation of the AC input, and if possible, start up the standby diesel
generator in time, lest communication is interrupted after the loop protection of the
battery is disabled.
6.3.3 Disasters and accidents
The disasters and accidents include such events as lightning strikes, flooding,
earthquake and fire accidents which will cause the failure of communications facilities.
For the disasters that may cause severe communications security problems, we should
emphasize on prevention. At the same time, communications stations and offices
should be equipped with corresponding manpower and material resources to deal with
the disasters, and the units should have emergency status administrative regulations and
severe accidents repairing rules.
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6.4 Equipment maintenance
6.4.1 Major points for power supply maintenance
As the telecom power supply features a modular design, usually partial or unit failures
will not lead to proliferation. Power supply failures can be divided into general failure
and emergent failure.
Minor failure refers to that not affecting communication security, including lightning
damage to the AC lightning arrester, system internal communications interruption, no
output of a single module, and damage to the monitoring unit, etc. Emergent failure
refers to the failure that will affect communication safety, such as AC power off due to
AC input and control damage, DC load power off due to DC sampling and control
circuit damage.
If the system generates the following alarms, it is normal: AC input over/under-voltage
alarm, battery under-voltage alarm, mains supply outage alarm, etc.
6.4.2 Troubleshooting for AC power distribution unit
1. Level C lightning-proof device damage
The lightning arrester is composed of 4 leaf-shaped lightning protection units, 3
of which have the status display function to display whether the lightning
protection unit is in the sound state. When the window of the lightning-proof
device is in green, it means that the lightning-proof device is in good status.
When the window of a certain unit is in red, it means that this lightning-proof
unit is damaged. Replace the lightning-proof unit as soon as possible or notify
the local office of ZTE Corporation for maintenance in this case.
2. AC input phase loss
When there is phase default for AC input, the AC power supply cannot be
resolved temporarily, and the system is required to work, emergency methods
can be employed: first cut off the AC power supply, get down the phase line
with phase default, wrap it with friction tape, then use a short line to connect
the normal phase line into the phase line cut off. Then send AC power.
3. AC input over/under-voltage
If AC power is normal but the AC over/under-voltage alarm occurs, usually the
Chapter 6. Maintenance & Management
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AC sampling circuit of the monitoring system, AC transducer, or monitoring
unit becomes faulty.
4. AC contactor damage
The contactor does not close though the AC input voltage is within the normal
input range. Use a multimeter to check. If it is found in check that the AC
contactor coil has normal working voltage but does not close, it means that the
AC contactor is damaged and should be replaced.
5. AC contactor protection board (CEPU) damage
When the AC input voltage remains within the normal range while the contactor
does not close, check the contactor coil with a multimeter, and it is found that
there is no normal working voltage. In this case, it is probably that the CEPU
board of the AC input part is damaged. When CEPU board is damaged, the AC
input contactor cannot close. At the time, no AC power input will be available
for the system.
Handling method: when the system is powered by mains supply 1, extract plug
X11 on the CEPU board, and plug it into socket X31; when the system is
powered by mains supply 2 or the diesel generator, extract plug X21 on the
CEPU board, and plug it into socket X31. This handling method means that
CEPU board is skipped over.
6.4.3 Troubleshooting for DC power distribution unit
1. DC tributary failure
If the DC input terminal of the fuse or disconnector has voltage but the output
terminal has no voltage output, it means that the fuse or disconnector is not
connected or has been damaged. If the fuse or the breaker is normal, it may be
due to disconnection of DC tributary detection lines.
2. Battery management failure
If the monitoring unit cannot perform normal alarm and protection over the
battery, i.e., the battery voltage is lower than alarm and protection values, but
there is no alarm and protection signal output, which cannot correctly free the
battery. The causes for battery management fault are as follows: the
corresponding supervision sampling line is disconnected, the relevant part of
ZXDU500 500A Combined Power Supply System User’s Manual
----116----
the monitoring unit is damaged, the implementing part (DC contactor) is
damaged, or the cable for the implementation part is disconnected, and so on.
3. DC contactor failure
If there is normal working voltage at both ends of the contactor, but the
contactor cannot be disconnected, it means that the contactor is damaged, which
shall be replaced.
6.4.4 Handing of the rectifier failure
Common failures of the rectifier include the following: no output, over-heat failure, no
equalized current, no ideal equalized current, no display, etc.
1. Module no output
If the rectifier does not work, and no panel indicator lights up, then first check
whether there is AC input, secondly, check whether the input fuse of the module
is burnt out. Another case may be that there is failure with the module. If so, the
faulty module must be replaced.
2. Overheat
When the temperature on the main cooler inside the rectifier is over 85℃, the
module will stop output. In this case, the monitoring unit will display the alarm
information. Module overheat may be caused by blocking or serious aging of
the fan, or poor working of the internal circuits of the rectifier. In the first case,
replace the fan. In the second case, maintain and repair the power module.
3. No current equalization and poor current equalization
When no current equalization occurs in system utilization, check whether the
monitoring cable between the module and the monitoring is connected
appropriately and whether the monitoring cable itself is disconnected. If there is
current equalization but the effect is poor, adjust the output voltage of the
corresponding module with poor current equalization effect (adjust the
potentiometer on the rectifier panel), so that the difference of the output current
in the states of floating charge or the equalized charge is within the stipulated
scope, and equalized current will be obtained again.
4. Fan failure
Chapter 6. Maintenance & Management
----117----
The characteristic of fan failure is that it does not work when it is expected to. At the time, check whether the fan is blocked, if yes, clear the blocking materials; otherwise, it may be that the fan is damaged itself, or there is fault with the connection control part, it is necessary to dismantle the module for maintenance.
5. Over-current protection
The rectifier is capable of over-current protection. If the output is short-circuited, the module will retract for protection. And when the output voltage is lower than 20V, the rectifier will be switched off. In this case, the current limiting indicator on the panel will light up. After troubleshooting, the module will automatically resume working normally.
6.4.5 Troubleshooting for the monitoring unit
The monitoring unit features certain self-diagnosis function. When the monitoring unit
fails, we can handle the problems by referring to Table 6-3.
Table 6-3 Failure diagnosis of the monitoring unit
Symptoms Solutions
No working of the monitoring unit
First, check whether the power indicator is on. If not, check whether the power input of the monitoring box is normal, whether the fuse of the monitoring unit is normal and whether the power switch is turned on.
Display disorder on screen Press the Reset button to reset the monitoring unit
Communication disabled
Check whether the communication cable has been reliably connected to the 9-pin socket X6 of the backplane, and reset the monitoring unit is communication remains disabled. For Modem communication, check whether the Modem cable is connected reliably with the power cable.
Abnormal status detection and control of the rectifier
If rectifiers 1~5 are abnormal, check whether X14 on the backplane is connected reliably, and if rectifiers 6~10 are abnormal, check whether X19 on the backplane is connected reliably.
Abnormal AC data or status Check whether X15 on the backplane is plugged reliably.
Abnormal DC data or status Check whether X16 and X17 on the backplane are plugged reliably.
Abnormal battery temperature detection
Check whether the sensor sockets X7, X8 and X9 that detect the battery temperature are connected reliably on the back panel of the monitoring unit (never connect the battery temperature sensor to the power socket of Modem).
Error detection of the environment parameters
Check whether EMB board is well connected with the connection cable of socket X12 on the back panel of the monitoring unit and in good contact with the environment detection probe
Abnormal input detection of the alarm relay contact Check whether the socket X13 of the backplane is well connected.
Abnormal power-off control and emergency lighting control
Check whether the backplane X11 is well connected with the corresponding cable.
Abnormal dry contact output board of the system
Check whether RLY board is well connected with the connection cable of socket X10 on the back panel of the monitoring unit.
No flashing of the running indicator Please reset the monitoring box.
ZXDU500 500A Combined Power Supply System User’s Manual
----118----
6.5 Emergency handling
6.5.1 Principle for emergency handling
The basic principle for emergency handling of the power supply system fault is to keep
an uninterrupted DC power supply for the system.
The failures of the power supply system threatening communication security or
resulting in communications interruption mainly include the following: unrecoverable
damage to the AC power distribution circuit, short circuit of DC load or DC power
distribution unit, complete breakdown of the rectifier, shut-down accidents due to
monitoring unit out of control, and module blocking due to DC output over-voltage,
etc.
6.5.2 Emergency handling for AC/DC power distribution unit
The content of emergency handling of the AC power distribution unit failure is power
supply interruption, the way to handle is to directly introduce the single-phase AC into
the rectifier.
The emergency handling of DC power distribution unit is as follows:
1. Load part short-circuit
Separate the damaged load DC feeding fuse.
2. Power distribution short-circuit
DC power distribution short-circuit failure caused by human carelessness or
natural factors such as earthquake, will directly affect communication safety.
The processing method for the faults is as follows: cut off AC power supply;
separate the battery from the system by force; use battery or rectifier to directly
provide power supply for the load.
6.5.3 Emergency handling for the monitoring unit
If the monitoring unit failure affects DC power supply security, it is only necessary to
shut down the monitoring unit. At the same time, pay attention to management and
maintenance of the battery.
Chapter 6. Maintenance & Management
----119----
6.5.4 Emergency handling of the rectifier failure
1. Short circuit inside the module
When there is short circuit inside the module, it will automatically exit from the
system.
2. Partial module damage
After a part of the module is damaged, if the remaining parts can meet the
requirements of load power supply, it is sufficient to shut down the AC power
supply of the damaged module.
3. Module output over-voltage
When the load current is lower than the capacity of a single module, output
over-voltage of a module will lead to system over-voltage and over-voltage
protection of all modules and cannot be recovered automatically. Handling
method: turn off the AC input switches of all the modules, then turn on them
one by one; when a certain module is turned on and undergoes over-voltage
protection once more, turn off the module, and turn on other modules, then the
system can work normally.
----120----
7. Packaging, Transportation & Storage
7.1 Packaging The whole system is packed component by component. The monitoring unit and the
cabinet are packed together, and two rectifiers are packed in one carton. Fittings and
documents are packed in the general cartons. During packaging, we should pay special
attention to the requirements on the placement directions of various parts.
7.2 Transportation Packages should be handled with care during transportation, so as to prevent violent
impact on them. Besides, they should be placed strictly according to the direction
requirements marked on the packing boxes to prevent damaging devices due to shock.
7.3 Storage The system should be stored in dry warehouses and be kept from exposure to sunshine
or rainwater. The placing direction shall conform to the marks on packages. The
storage period is restricted to one year with a storage temperature in the range from -40
℃ to 70℃.
----121----
Appendix A Threshold Ranges of Power & Environment Parameters
Appendix A-1 Threshold ranges of power supply & environmental parameters
Parameter Name Default value
Upper limit
Lower limit
Remarks
AC input high voltage alarm threshold (V) 260 300 240 AC input low voltage alarm threshold (V) 180 200 160 AC input high current alarm threshold (A) 60 80 50 Output high voltage alarm threshold (V) 58.0 59.0 57.0 ≥ Equalized-charging voltage +1V Output low voltage alarm (V) 48.0 52.0 41.0 ≤ Float-charging voltage-1V Float-charging voltage (V) 53.5 58.0 42.0 ≤ Equalized-charging voltage
≥ Battery under-voltage alarm threshold +1 ≥ Low output voltage alarm threshold +1
Equalized-charging voltage (V) 56.4 58.0 42.0 ≥ Float-charging voltage ≤ high output voltage alarm threshold –1V
Test voltage (V) 46.0 48.0 42.0 Battery pack capacity (Ah) 100 2000 0 Battery charging coefficient 0.15 0.25 0.05 Battery temperature compensation coefficient (mv/℃/pcs)
3 6 0
Equalized-charging cycle of the battery 180 365 15 Equalized-charging threshold capacity of the battery
0.85 0.95 0.6
Battery under-voltage alarm threshold (V) 47.0 52.0 41.0 ≤ Float-charging voltage-1 ≥ First-stage power shutdown voltage +1
First-stage shutdown voltage of the load (V)
46.0 47.0 40.0 ≤ Battery under-voltage alarm threshold -1 ≥ Second-stage power shutdown voltage
Second-stage shutdown voltage of the load (V)
45.0 47.0 40.0 ≤ First-stage power shutdown voltage
Battery high temperature alarm threshold (℃)
40 55 30
High ambient temperature alarm threshold (℃)
40 55 30
Low ambient temperature alarm threshold (℃)
-5 10 -20
High ambient humidity alarm threshold (%)
90 100 80
Low ambient humidity alarm threshold (%)
20 40 10
Input current zero adjustment (A) 0 10 -10 Input current slope adjustment (%) 1 1.2 0.8 Battery temperature zero adjustment (℃) 0 10 -10 Load current zero adjustment (A) 0 10 -10 Load current slope adjustment (%) 1 3 0.3 Battery current zero adjustment (A) 0 10 -10
ZXDU500 500A Combined Power Supply System User’s Manual
----122----
Continued Table A-1
Parameter Name Default
value
Upper
limit
Lower
limit
Remarks
Battery current slope adjustment
(%)
1 3 0.3
Ambient temperature zero adjustment (℃)
0 10 -10
Ambient humidity zero adjustment
(%)
0 10 -10
Total circuits of the load 20 20 0 ≥(First-stage power shut-down circuits
plus second-stage power shutdown
circuits)
First-stage power shut-down
circuits
8 20 0 ≤(Total circuits of the load minus the
second-stage power shutdown circuits)
Second-stage power shut-down
circuits
12 20 0 ≥(Total circuits of the load minus the
first-stage power shutdown circuits)
Equipment address No. 1 254 1
Baud rate 1200 9600 1200 Settings of four baud rates: 1200, 2400,
4800 and 9600
Menu password setting 0000 9999
Alarm relay contact corresponding
to the failure type
Language English Switchover between Chinese and
English
----123----
Appendix B Delivery Attached Packing Accessories
Table B-1 Delivery attached packing accessories
S.N. Part name Specifications Unit Qty Remarks 1 400A fuse 3NA3144-2C pc 1 Spare parts
2 6A ~ 200A fuse 3NA38**-2C Set 1
Spare parts, configured as required in the contract, or one piece for each type of fuse if there are no requirements in the contract.
3 Fuse extractor pc 1 4 Wire clip ≥145mm pc 30 5 Adhesive line clip base 20×20 pc 12 6 Nut M8 pc 4 7 Bolt M8×25 pc 4 8 Flat washer 8 pc 8 9 Spring washer 8 pc 4
10 Nut M10 pc 6 11 Bolt M10×35 pc 2 12 Flat washer 10 pc 8 13 Spring washer 10 pc 6 14 Expansion bolt M10*80 Set 4
15 Insulation tape Width 18mm Volume 3 One red, one blue and one black
16 Humidity sensor IH-3605-A pc 1 Configured as required in the contract
17 Smog sensor JTY-LZ-F901 pc 1 Configured as required in the contract
18 Infrared sensor AE1 PIR-9112 pc 1 Configured as required in the contract
19 Flooding sensor LL101101 pc 1 Configured as required in the contract
20 Cruciform round combination screw M4×12 nickel plating pc 4 No standard requirements
21 User’s Manual for Power Supply Background Monitoring Software (V3.0)
Copy 1 It can be configured for users demanding three “tele”s
22 “User’s manual of ZXDU500 500A Combined Power Supply System”
Copy 1
23 User’s Manual for ZXD2400 (V3.0) 50A Rectifier Copy 1
24 Certificate Copy 1
25 Serial port communication cable 4-pin shielded wire pc 1 Two 9-pin female plugs, 10m,
optionally configured
26 25-pin and 9-pin serial port transit cable 4-pin shielded wire pc 1 One 9-pin male plug and one 25-pin
female plug
27 Battery temperature sampling cable 4-pin shielded wire pc 2
----124----
Appendix C Principle Diagram of AC/DC Distribution
QF01(KM01)
QF02(KM02)TP1
QF0
F1
QF03
QF0n
QF1
QF2
QF3
QF4
QF5
QF6
U1 RS1
RS2
RS3
FU1
FU2
FU3
GB1
GB2
GB3
ST1
ST2
ST3
1FU11FU21FU31FU41FU5
2FU112FU122FU132FU142FU15
2FU12FU22FU32FU42FU52FU62FU72FU82FU9
2FU10
TA1
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1KM1
2KM1
3KM1 3FU1
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QF7
QF8
QF9
QF10 U10
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U4
U5
U7
U8
U9
U1
V1
W1
U2
V2
W2
N
PE
U V WL+ L-+ -48V
X15-
2X1
5-3
X15-
4X1
5-5
X15-
6X1
5-7
X15-
1
X15-
10X15-8
X16-15X16-14X16-13X16-12X16-11
X16-10X16-9X16-8X16-7X16-6X16-5X16-4X16-3X16-2X16-1
X17-10 X17-9
X17-12 X17-11
X17-14 X17-13
X17-
16
X17-
15
X17-6
X17-7
X17-8
X7-2
X8-2
X9-2
X7-1
X8-1
X9-1
X11-2
X11-4
X11-6
1 2X7 1 2X8 1 2X9
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
X11
1 2 3 4 5 6 7 8 9 10 11
X15
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15X161 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18X17
1 2 3 4X5
1 3
1 3
1 3
- +
- +
- +
+-
1 6 2 7 3 8 4 9 5
X61 2 3 4 5 6 7 8X13
RS485/422 RS232
B A Y Z
-48V
1KM
1-A1
2KM
1-A1
3KM
1-A1 CO
M1
NC1
NO1
COM
2
NO2
NC2
A1 A2
A1 A2
A1 A2
X10
X14 X19
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1FU
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3RS
1+RS
1-RS
2+RS
2-RS
3+RS
3-RS
4+RS
4-L+ 2F
U10
2FU9
2FU8
2FU7
2FU6
2FU5
2FU4
2FU3
2FU2
2FU1
1FU5
1FU4
1FU3
1FU2
1FU1
VD1 IN4004
VD2 IN4004
VD3 IN4004
VD4 IN4004
-48V
ST1-
3ST
1-1
ST2-
3ST
2-1
ST3-
3ST
3-1
T1+1
2V T2+1
2V T3 +12V
TP1-
IaTP
1-GN
DTP
1-12
VTP
1+12
VTP
1-Va
TP1-
VbTP
1-Vc
QF01
QF0
F1
Ub
Ua
Uc N
Ia GN
D-1
2V+1
2VV
aV
bV
c
TA1-
1TA
1-2
Emergency Lighting
MAIN
GEN
BACK
~ =
~ =
~ =
~ =
~ =
~ =
~ =
~ =
~ =
~ =
1 2
MODEM POWER
12VDC
1 2
MODEM POWER
12VDC
1 2 3
48VDC- + - + L+
VD4-
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1C1
2C1
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X17-1
X17-2
X17-3X17-4
X17-5
POWER-X1-3
GN
D
X15-9
X15-11
QF03
POWER
POWER-X2 POWER-X3 POWER-X1