md1501 series x instruction manual en domestic general x r1.02 (en czxl1501.0086.0003)

7/23/2019 MD1501 Series X Instruction Manual en Domestic General X R1.02 (en CZXL1501.0086.0003)

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MD1501 Series

Auxiliary Relay

Instruction Manual

NR Electric Co., Ltd.


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Preface

MD1501 Series Au xil iary Relay i

Date: 2013-04-26

Preface

IntroductionThis guide and the relevant operating or service manual documentation for the equipment provide

full information on safe handling, commissioning and testing of this equipment.

Documentation for equipment ordered from NR is dispatched separately from manufactured goods

and may not be received at the same time. Therefore, this guide is provided to ensure that printed

information normally present on equipment is fully understood by the recipient.

Before carrying out any work on the equipment, the user should be familiar with the contents of

this manual, and read relevant chapter carefully.

This chapter describes the safety precautions recommended when using the equipment. Before

installing and using the equipment, this chapter must be thoroughly read and understood.

Health and Safety

The information in this chapter of the equipment documentation is intended to ensure that

equipment is properly installed and handled in order to maintain it in a safe condition.

When electrical equipment is in operation, dangerous voltages will be present in certain parts of

the equipment. Failure to observe warning notices, incorrect use, or improper use may endanger

personnel and equipment and cause personal injury or physical damage.

Before working in the terminal strip area, the equipment must be isolated.

Proper and safe operation of the equipment depends on appropriate shipping and handling,

proper storage, installation and commissioning, and on careful operation, maintenance and

servicing. For this reason, only qualified personnel may work on or operate the equipment.

Qualified personnel are individuals who:

Are familiar with the installation, commissioning, and operation of the equipment and of the

system to which it is being connected;

Are able to safely perform switching operations in accordance with accepted safety

engineering practices and are authorized to energize and de-energize equipment and to

isolate, ground, and label it;

Are trained in the care and use of safety apparatus in accordance with safety engineering

practices;

Are trained in emergency procedures (first aid).

Instructions and Warnings

The following indicators and standard definitions are used:


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Preface

MD1501 Series Aux il iary RelayiiDate: 2013-04-26

DANGER!

It means that death, severe personal injury, or considerable equipment damage will occur if safety

precautions are disregarded.

WARNING!

It means that death, severe personal, or considerable equipment damage could occur if safety

precautions are disregarded.

CAUTION!

It means that light personal injury or equipment damage may occur if safety precautions are

disregarded. This particularly applies to damage to the device and to resulting damage of the

protected equipment.

WARNING!

The firmware may be upgraded to add new features or enhance/modify existing features, please

make sure that the version of this manual is compatible with the product in your hand.

WARNING!

During operation of electrical equipment, certain parts of these devices are under high voltage.Severe personal injury or significant equipment damage could result from improper behavior.

Only qualified personnel should work on this equipment or in the vicinity of this equipment. These

personnel must be familiar with all warnings and service procedures described in this manual, as

well as safety regulations.

In particular, the general facility and safety regulations for work with high-voltage equipment must

be observed. Noncompliance may result in death, injury, or significant equipment damage.

WARNING!

Exposed terminals

Do not touch the exposed terminals of this equipment while the power is on, as the high voltage

generated is dangerous

Residual voltage

Hazardous voltage can be present in the DC circuit just after switching off the DC power supply. It

takes a few seconds for the voltage to discharge.


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Preface

MD1501 Series Au xil iary Relay iii

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CAUTION!

Earth

The earthing terminal of the equipment must be securely earthed

Operating environment

The equipment must only be used within the range of ambient environment detailed in the

specification and in an environment free of abnormal vibration.

Ratings

Before applying AC voltage and current or the DC power supply to the equipment, check that they

conform to the equipment ratings.

Printed circuit board

Do not attach and remove printed circuit boards when DC power to the equipment is on, as this

may cause the equipment to malfunction.

External circuit

When connecting the output contacts of the equipment to an external circuit, carefully check the

supply voltage used in order to prevent the connected circuit from overheating.

Connection cable

Carefully handle the connection cable without applying excessive force.

Copyright

Version: R1.02

P/N: EN_CZXL1501.0086.0003

Copyright NR 2013. All rights reserved

NR ELECTRIC CO., LTD.

69 Suyuan Avenue. Jiangning, Nanjing 211102, China

Tel: +86-25-87178185, Fax: +86-25-87178208

Website:www.nrelect.com, www.nari-relays.com

Email: [email protected]

We reserve all rights to this document and to the information contained herein. Improper use in particular reproduction and dissemination

to third parties is strictly forbidden except where expressly authorized.

The information in this manual is carefully checked periodically, and necessary corrections will be included in future editions. If

nevertheless any errors are detected, suggestions for correction or improvement are greatly appreciated.

We reserve the rights to make technical improvements without notice.
http://www.nrelect.com/http://www.nari-relays.com/http://www.nari-relays.com/http://www.nrelect.com/


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Preface

MD1501 Series Aux il iary RelayivDate: 2013-04-26

Documentation Structure

The manual provides a functional and technical description of this relay and a comprehensive set

of instructions for the use and application of MD1501 series auxiliary relays.

All contents provided by this manual are summarized as below:

1 Introduction

Briefly introduce the application, functions and features about MD1501 series auxiliary relays.

2 Technical Data

Introduce the technical data about MD1501 series auxiliary relays, such as electrical specifications,

mechanical specifications, ambient temperature and humidity range, type tests and the

certifications that our products have passed.

3 Operation Theory

Introduce a detailed functional description of each auxiliary relay.

4 Installation

Introduce the recommendations on unpacking, handling, inspection and storage of the relay. A

guide to the mechanical and electrical installation of this relay is also provided, incorporating

earthing recommendations.

5 Commissioning

Introduce how to commission the relay, comprising checks on the calibration and functionality of

the relay.

6 Maintenance

A general maintenance policy for the relay is outlined.

7 Decommissioning and Disposal

A general decommissioning and disposal policy for the relay is outlined.

8 Manual Version History

List the instruction manual version and the modification history records.


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1 Introduct ion

MD1501 Series Au xil iary Relay 1-a

Date: 2013-01-04

1 Introduction

Table of Contents

1 Introduction ..................................................................................... 1-a

1.1 Application ....................................................................................................... 1-1

1.2 Function ........................................................................................................... 1-1

1.3 Features ........................................................................................................... 1-1

1.4 Type .................................................................................................................. 1-1


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1 Introduct ion

MD1501 Series A uxil iary Relay1-b

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1 Introduct ion

MD1501 Series Au xil iary Relay 1-1

Date: 2013-01-04

1.1 Application

MD1501 series auxiliary relays are of various functions mainly used with main protection and

control device in modular design. Each relay type is designed with specific function.

Each relay is independent from each other with high configurability and extensibility. Relay types

are continuously developed in order to meet the requirement of various applications.

1.2 Function

MD1501 series auxiliary relays provide functions as follows:

Trip circuit supervision

Lockout function

Tripping relay function

Repeat relay function (voltage operated or current operated)

AC voltage switching function

1.3 Features

Types of relay of dedicated function are available and can be flexible combined to meet with

requirement of various applications.

Completely-sealed, high-resistance and small power consumption relays are used, power

consumption and heat dissipation are greatly reduced and moisture proof is improved, hence

the security of relay is increased.

Adaptive mounting modes, the relay modules can be accommodated in a casing installed on

a panel as a relay device.

High burden of the relay for tripping or closing circuit breaker has strong interference

withstand capability.

More spare relays can be provided and flexible applied.

1.4 Type

MD1501 series auxiliary relays can be classified in following types according to their functions.

Table 1.4-1 Types of MD1501 series auxiliary relay

Type Applications

MD1501-551 Trip circuit supervision with current operated auxiliary relay

MD1501-552 Phase segregated trip circuit supervision

MD1501-556 Current operated auxiliary relay (3 elements)

MD1501-561 Bi-stable switching relay

MD1501-571 Electrical reset auxiliary element with internal operating coil supervision (high burden)


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1 Introduct ion

MD1501 Series A uxil iary Relay1-2

Date: 2013-01-04

MD1501-572 Self reset auxiliary relay with electrical reset LED indicator (high burden)

NOTE!

Devices may be upgraded to amend or enhance functions, please ensure that this manualversion is compatible with your devices.


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2 Techn ical Data


Date: 2013-01-16

2 Technical Data

Table of Contents

2 Technical Data ................................................................................. 2-a

2.1 Electrical Specifications ................................................................................. 2-1

2.2 Mechanical Specifications ............................................................................. 2-1

2.3 Ambient Temperature and Humidity Range .................................................. 2-1

2.4 Type Tests ........................................................................................................ 2-1

2.5 Certifications ................................................................................................... 2-2

2.6 Main Technical Data of Each Relay................................................................ 2-3


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2 Techn ical Data


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2.1 Electrical Specifications

Power Supply (Voltage Operated Element)

Rated Voltage 110Vdc, 125Vdc, 220Vdc, 250Vdc

Variation (80%~120%)Un

Ripple in the DC auxiliary voltage Max 15% of the DC value. IEC 60255-11:1979

BurdenQuiescent condition < 6W

Operating condition < 120W

2.2 Mechanical Specifications

Enclosure dimensions (WHD) 35.5173.8198 (unit: mm)

Trepanning dimensions (WH) 36.4154(unit: mm), M3 screw

Mounting Flush mounted

Weight per relay Approx. 1kg

Housing material Aluminum, steel

Housing color Silver grey

Location of terminal Back side

Enclosure Protection IEC60529:1989

Front side IP40

Other sides IP40

Rear side, connection terminals IP20

2.3 Ambient Temperature and Humidity Range

Standard IEC 60255-6:1988

Operating temperature -25C~+55C

Transport and storage temperature

range-40C~+70C

Relative humidity 5%~95%, without condensation

2.4 Type Tests

2.4.1 Environmental Tests

Dry cold test IEC 60068-2-1:1974 Test Ad for 16 h at -25C

Dry heat test IEC 60068-2-2:1990 Test Bd for 16 h at +55C

Damp heat test, cyclicIEC 60068-2-30:1980 Test Db Two (12+12) hour cycles 95%RH, low

temperature -25C, high temperature +55C

2.4.2 Mechanical Tests

Vibration IEC60255-21-1:1988 Class I

Shock and bump IEC 60255-21-2:1988 Class I


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2.4.3 Electrical Tests

Dielectric tests IEC 60255-5:2000 Test voltage 2kV, 50Hz, 1min

Impulse voltage testsIEC 60255-5:2000 Test voltage 5kV, unipolar impulses waveform

1.2/50s,source energy 0.5J

Insulation resistance measurements IEC 60255-5:2000 Isolation resistance >100M, 500Vdc

2.4.4 Electromagnetic Compatibility

1MHz burst disturbance test

IEC 60255-22-1:1988 (idt IEC61000-4-12:1995)

Common mode: class III 2.5kV

Differential mode: class III 1.0kV

Radio frequency interference tests

IEC 60255-22-3:2007 class III

Frequency sweep

Radiated amplitude-modulated

10V/m (rms), f=80~1000MHzSpot frequency

Radiated amplitude-modulated

10V/m (rms), f=80MHz/160MHz/450MHz/900MHz

Radiated pulse-modulated

10V/m (rms), f=900MHz

Electrostatic discharge test

IEC60255-22-2:1996 (idt IEC 61000-4-2:2006) class IV

For contact discharge: 8kV

For air discharge: 15kV

Fast transient disturbance tests

IEC 60255-22-4:2002 (idt IEC 61000-4-4:2004)

Power supply, I/O, Earth: Class IV, 4kV, 2.5 kHz, 5/50ns

Communication terminals: Class IV, 2kV, 5 kHz, 5/50ns

Surge immunity test

IEC 60255-22-5:2002 (idt IEC 61000-4-5:1995) class IV

Power supply, AC input, I/O port: 4kV, line to earth; 2kV line to line,

1.2/50us

Conducted RF Electromagnetic

Disturbance

IEC 60255-22-6:2001, Class III

Power supply, AC, I/O, Comm. Terminal: 10Vrms, 150 kHz~80MHz

Power Frequency Magnetic Field

Immunity

IEC 61000-4-8:2001, Class V

100A/m for 1min, 1000A/m for 3s

2.5 Certifications

ISO9001: 2008

ISO14001:2004

OHSAS18001:2007

ISO10012:2003

CMMI L4

EMC: 2004/108/EC, EN50263:1999


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2 Techn ical Data


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Products safety(PS): 2006/95/EC, EN61010-1:2001

2.6 Main Technical Data of Each Relay

2.6.1 Main Technical Data of Type MD1501-551

Trip circuit supervision relay

Rated voltage

110Vdc: MD1501-551B

125Vdc: MD1501-551N

220Vdc: MD1501-551A

250Vdc: MD1501-551M

Pickup voltage


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2 Techn ical Data


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220Vdc: MD1501-552A

250Vdc: MD1501-552M

Pickup voltage


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Output contacts 4 groups of switching contacts, one group of signal contact

Maximum voltage for contact 380Vac, 250Vdc

Voltage withstand for normally open

contact1200Vac, 1min

Current carrying capacity for contact 8AOvercurrent capacity for contact 50A@200ms,[email protected], 10A@3s

Breaking capacity for contact

(L/R=40ms)1.2A@48Vdc, 0.5A@110Vdc, 0.25A@220Vdc

NOTE!

Please ensure the state of bi-stable relays matches with site current status when put in

service.


High burden electrical reset auxiliary relay:

Rated voltage

110Vdc: MD1501-571B

125Vdc: MD1501-571N

220Vdc: MD1501-571A

250Vdc: MD1501-571M

Rated power consumption


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NOTE!

For the relay, the power is larger at the moment of operating, and the power is less after

the operating. When testing the relay, users maybe gradually increase the DC voltage

subject to the relay under non-operating state, in fact, the power of the relay is larger under

that situation, so each relay should avoid subjecting to DC voltage for a long time under

non-operating state (not longer than 20s).


High burden self reset auxiliary relay:

Rated voltage

110Vdc: MD1501-572B

125Vdc: MD1501-572N

220Vdc: MD1501-572A

250Vdc: MD1501-572M

Rated power consumption


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3 Operation Theory

MD1501 Series Auxil iary Relay 3-a

Date: 2013-04-26

3 Operation Theory

Table of Contents

3 Operation Theory ............................................................................ 3-a

3.1 Type MD1501-551 (Trip circuit supervision relay) ........................................ 3-1

3.2 Type MD1501-552 (Phase segregated trip circuit supervision relay) ......... 3-3

3.3 Type MD1501-556 (Current operated auxiliary relay) ................................... 3-5

3.4 Type MD1501-561 (Bi-stable switching relay) ............................................... 3-7

3.5 Type MD1501-571 (Electrical reset auxiliary relay, high burden) ................ 3-8

3.6 Type MD1501-572 (Self reset relay with electrical reset LED flag) ............. 3-11


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3 Operation Theory

MD1501 Series Auxil iary Relay 3-1

Date: 2013-04-26

3.1 Type MD1501-551 (Trip circuit supervision relay)

Schematic diagram of type MD1501-551 is shown inFigure 3.1-1.

K1

n20

L2

K3

K2

K4

K3

L1

Supervised

circuit

K5

n19

n18

Supervised

circuitstatus

indication

Trippingcontact

K1

K2

K3

n12

n10n09

K4-2

K4-1

n11

n16

n14

K5-2

K5-1

Contactsof

supervisionrelayn13

n15

n17

VV

V

V

V52b

Currentoperated

elementandoutput

contact(Exampleoflatched

connection)

n22n21

52a

CBtrippingcircuitryTripcircuitsupervision

I

n05

n06K6

D9 D10

D8

S1

S2

S3

S4

+

-

n04

n02n01

K6-2

K6-1

n03Contactofcurrentoperatedrelay

DC+ DC-

n01

n02

n03

n04

n05

n06

n07

n08

n09

n10

n11

n12

n13n14

n15

n16

n17

n18

n19

n20

n21

n22

K6+

K6-

Reserved

Reserved

K1+

K1-

K2+

K2-

K4-1

K4-1

K4-2

K4-2

K5-1K5-1

K5-2

K5-2

DC+

DC-

K6-1

K6-1

K6-2

K6-2

Figure 3.1-1 Trip circuit supervision relay type MD1501-551

Trip circuit supervision relay

Application

Trip circuit supervision function is accomplished by relay K1~K5, the typical connection is shown

as dotted line part inFigure 3.1-1.An alarm will be given by relays K4 and K5 if any of following

conditions happens.

1) DC power supply is lost

2) A fault occurs within the tripping circuit

Principle


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3 Operation Theory

MD1501 Series Au xil iary Relay3-2Date: 2013-04-26

Relays K1 and K2 can accomplish trip circuit supervision, when the circuit breaker is closed, relay

K1 is energized and its normally open contact will make to energize relay K3. When the circuit

breaker is open, relays K1 and K2 are energized and their normally open contacts connected in

parallel will make to energize relay K3. If any of above mentioned abnormal conditions happens,

relays K1 and K2 will drop off, consequently relay K3 drops off to initiate LED indicator L2 and

reset relays K4 and K5 as well, alarm outputs are provided by relays K4 and K5. Relay K3 is

connected in parallel with a RC circuit providing 300ms delay drop off to prevent mal-operation

during transition period of tripping.

LED indicator

LED indicator L1 (TCCS OK): operating indicator, normally green if type MD1501-551 is operating

normally, it will go out due to power source loss or trip circuit fault.

LED indicator L2 (ALARM): alarming indicator, yellow, it is off if type MD1501-551 is operating

normally, it will turn on due to trip circuit fault.

Current operated auxiliary relay

Application

Current operated relay can be used as a repeat relay to provide auxiliary contacts. One of the

main application is to connect with tripping or closing contact of protection or control device as a

current latched element. This can prevent tripping or closing contact of protection or control device

from arc breaking.

Principle

Current operated relay K6 is connected in series between an initiation contact and operating

device and energized by the through current. For the application as a latched element mentioned

above, its normally open contact is connected in parallel with the initiation contact (between

positive terminal of DC power supply and positive terminal of K6 (i.e. n05)). For example of a

tripping circuit, protection device operates for an internal fault, K6 will be energized via the

protection tripping contact and its normally open contact connected in parallel with tripping contact

will close to latch relay K6 until the current path is opened by the circuit breaker auxiliary contact.

In05 n06

K6Current

operatedrelay

n22n21 DC+ DC-

+ -n02K6-1n01

Trippingcontact

Operatingdevice

Figure 3.1-2 Type MD1501-551 is connected with tripping contact as a current latched element

Main technical data of type MD1501-551

Please refer to Section 2.6.1about main technical data of type MD1501-551.


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Operating current of current operated relay:

Table 3.1-1 Operating current change method of current operated relay of type MD1501-551

Operating current (A)Setting method

Pickup current (A)S1 S2 S3 S4

0.25A disconnect disconnect disconnect disconnect 0.05~0.125

0.50A short-circuit disconnect disconnect disconnect 0.10~0.25

1.00A short-circuit short-circuit disconnect disconnect 0.20~0.50

1.50A short-circuit disconnect short-circuit disconnect 0.30~0.75

2.00A short-circuit short-circuit short-circuit disconnect 0.40~1.00

2.50A short-circuit disconnect disconnect short-circuit 0.50~1.25

3.00A short-circuit short-circuit disconnect short-circuit 0.60~1.50

3.50A short-circuit disconnect short-circuit short-circuit 0.70~1.75

4.00A and above short-circuit short-circuit short-circuit short-circuit 0.80~2.00

3.2 Type MD1501-552 (Phase segregated trip circuit supervisionrelay)



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3 Operation Theory


K2

L2

K7

K1

K8

K7

L1

Phase-A

K9

n12

Trippingcontact

K1

K2

K7

n08

n06n05

K9-2

K9-1

Contactsof

supervisionrelay

n07n04

n02

K8-2

K8-1

Contactsof

supervisionrelay

n01

n03

VV

V

VV

n22n21

n09 n10 n11

K4K3n16

Trippingcontact

VVn13 n14 n15

K6K5n20

Trippingcontact

VVn17 n18 n19

Phase-A

Phase-B

Phase-C

Supervised

circuitstatus

indication

Phase-B

Phase-C

K3

K4

K5

K6

Tripcircuitsupervision

CBtripping

circuitry

52b

52b

52b

52a

52a

52a

DC+ DC-

n01

n02

n03

n04

n05

n06

n07

n08n09

n10

n11

n12

n13

n14

n15

n16

n17

n18

n19

n20

n21n22

K8-1

K8-1

K8-2

K8-2

K1+

K1-

K2+

K2-

K3+

K3-

K4+

K4-

K5+

K5-

K6+

K6-

DC+DC-

K9-1

K9-1

K9-2

K9-2

Figure 3.2-1 Phase segregated trip circuit supervision relay type MD1501-552

Application

Trip circuit supervision function is accomplished by relay K1~K9 (phase segregated trip circuits

can be supervised simultaneously), the typical connection is shown as dotted line part inFigure

3.2-1.An alarm will be given by relays K8 and K9 if any of following conditions happens.

1) DC power supply is lost

2) A fault occurs within the trip circuit of any phase

Principle

Relays K1~K6 can accomplish phase segregated trip circuit supervision (2 relays for each phase,

i.e. relays K1 and K2 for A phase, relays K3 and K4 for B phase and relays K5 and K6 for C phase).

When phase-A of the circuit breaker is closed, relay K1 is energized and its normally open contact

will make to energize relay K7. When phase-A of the circuit breaker is open, relays K1 and K2 are

energized and their normally open contacts connected in parallel will make to energize relay K7.

Takes trip circuit supervision of phase-A as an example, if any of above conditions happens on


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3 Operation Theory


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phase-A circuitry, relays K1 and K2 will drop off, consequently relay K7 drops off to initiate LED

indicator L2 and reset relays K8 and K9 as well, similar operation for other phases.

Alarm contacts are provided by relays K8 and K9. Relay K7 is connected in parallel with a RC

circuit providing 300ms delay drop off to prevent mal-operation during transition period of tripping.

LED indicator

LED indicator L1 (TCCS OK): operating indicator, normally green if type MD1501-552 is operating

normally, it will go out due to power source loss or trip circuit fault.

LED indicator L2 (ALARM): alarming indicator, yellow, it is off if type MD1501-552 is operating

normally, it will turn on due to trip circuit fault.



3.3 Type MD1501-556 (Current operated auxiliary relay)


Currentoperated

relay1

n04

n02n01

K1-2

K1-1

n03

I

n05

n06K1

D4 D5

D1

S11

S12

S13

S14

I

n12

n13K2

D6 D7

D2

S21

S22

S23

S24

I

n19

n20K3

D8 D9

D3

S31

S32

S33

S34

n11

n09n08

K2-2

K2-1

n10

n18

n16n15

K3-2

K3-1

n17

Currentoperated

relay2

Currentoperated

relay3

n01

n02

n03

n04

n05

n06

n07

n08

n09

n10

n11

n12

n13

n14

n15

n16

n17

n18

n19

n20

n21

n22

K1-1

K1-1

K1-2

K1-2

K1+

K1-

K3-1

K3-1

K3-2

K3-2

K3+

K3-

K2-1

K2-1

K2-2

K2-2

K2+

K2-

Figure 3.3-1 Current operated auxiliary relay type MD1501-556

ApplicationCurrent operated relay can be used as a repeat relay to provide auxiliary contacts. One of the


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3 Operation Theory


main applications is to connect with tripping or closing contact of protection or control device as a

current latched element. This can prevent tripping or closing contact of protection or control device

from arc breaking.

Principle

Current operated relay is connected in series between an initiation contact and operating device

and energized by the through current. For the application as a latched element mentioned above,

its normally open contact is connected in parallel with the initiation contact (between positive

terminal of DC power supply and positive terminal of current operated relay (i.e. n05, n12 or n19)).

The typical application is shown as following diagram, takes relay K1 as an example, if protection

device operates for an internal fault, current operated relay will be energized via the protection trip

contact and its normally open contact connected in parallel with trip contact will close to latch

current operated relay K1 until the current path is opened by the circuit breaker auxiliary contact.

In05 n06

K1Current

operatedrelay

DC+ DC-

+ -n02K1-1n01

Trippingcontact

Operatingdevice

Figure 3.3-2 Type MD1501-556 is connected with tripping contact as a current latched element



Operating current of current operated relay:

Operating current of current operated auxiliary relay

Table 3.3-1 Operating current change method of type MD1501-556

Operating current (A)

Setting method

Pickup current (A)K1: S11

K2: S21

K3: S31

K1: S12

K2: S22

K3: S32

K1: S13

K2: S23

K3: S33

K1: S14

K2: S24

K3: S34

0.25A disconnect disconnect disconnect disconnect 0.05~0.125

0.50A short-circuit disconnect disconnect disconnect 0.10~0.25

1.00A short-circuit short-circuit disconnect disconnect 0.20~0.50

1.50A short-circuit disconnect short-circuit disconnect 0.30~0.75

2.00A short-circuit short-circuit short-circuit disconnect 0.40~1.00

2.50A short-circuit disconnect disconnect short-circuit 0.50~1.25

3.00A short-circuit short-circuit disconnect short-circuit 0.60~1.50

3.50A short-circuit disconnect short-circuit short-circuit 0.70~1.75

4.00A and above short-circuit short-circuit short-circuit short-circuit 0.80~2.00


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3.4 Type MD1501-561 (Bi-stable switching relay)


L2

K12-1L1

Busbar I

K22-1

n14

n15

K22-2

Output contact

n02

n01

K24-1

K14-1

Signal contact

n03

n22n21

Busbar II

K11

K12 K13 K14

K21K22 K23 K24

The second group of

normally open contact

LED

Indication

n05

n04

K24-2

K14-2n06

n08

n07

K23-1

K13-1n09

n11

n10

K23-2

K13-2n12

n13

K12-2

K21-2 K11-2

n17

n18

n19

n20The second group ofnormally closed contact

The first group of

normally open contact

The first group of

normally closed contact

DC+ DC-

n01

n02

n03

n04

n05

n06

n07

n08

n09

n10

n11

n12

n13

n14

n15

n16

n17

n18

n19

n20

n21

n22

K14-1

K24-1

K14/K24-2

K23-1

K13-2/K23-2

K13-2

K23-2

Both state In

Both In input lost

Device 1 NO

Device 1 NC

Device 2 NO

Device 2 NC

DC+

DC-

K14-2

K24-2

K13-1/K23-1

K13-1

K14-1/K24-1

Signal common

Figure 3.4-1 Bi-stable switching relay type MD1501-561

Application

The relay is dedicated designed for voltage switching automatically according to the state of

busbar disconnector. It can also be used for various applications as a bi-stable relay or electrical

reset relay for signal selection or switching control etc. subject to the requirement of applications.

Principle

Two relay groups are controlled by double-state auxiliary contacts of two devices respectively.Voltage switching of a double-busbar arrangement is taken as an example, voltage of busbar No.1

(BB1) and busbar No.2 (BB2) are connected to the relay output contacts respectively as the

sources of voltage signal, the common point of output contacts is connected to a voltage detection

element, both normally open and normally closed auxiliary contacts of both busbar 1 and busbar 2

disconnectors are connected to the inputs of the two relay groups (n17, n18, n19 and n20). Except

relay K11 and K12, other relays are magnetic latched relays, the relay state will not change even

the dc supply is lost, the output status will not be interrupted.

Alarm signal output by n13 and n16 indicates the lost of switch-in signals for both bi-stable relays.

Alarm signal output by n14 and n16 indicates both bi-stable relays inoperated state

that source

signals are coupled. LED indicator L1 on (Green) indicates the first group bi-stable relays (K12,


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3 Operation Theory


K13 and K14) in operated state, LED indicator L2 on (Green) indicates the second group

bi-stable relays (K22, K23 and K24) in operated state.

LED indicator

LED indicator L1 (ON BB1): green, it will turn on if the first groups of switching relay operates

LED indicator L2 (ON BB2): green, it will turn on if the second groups of switching relay operates



3.5 Type MD1501-571 (Electrical reset auxiliary relay, high burden)

Schematic diagram of type MD1501-571 is shown inFigure 3.5-1andFigure 3.5-2.

NO contact: normally open contact.

NC contact: normally closed contact.


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Coil healthy

LED

indicator

Output contacts

n02K6-1 Supervision

signal contact

n01

n22n21

Operating

LED

indicator

K2 K4

Initiation contact

Reset

n03K6-2

n19

n20

n04K5-1

n06K4-1

n05

n07K4-2

n08K5-2

n10K3-1

n09

n18K7-1n17

K5 K6K3K1

V

L2

L1

K7

Operate

K2-2

OP1

n12K3-2

n11

Reset

K2-1

n14K1-1n13

n16K1-2

n15

DC+ DC-

n01

n02

n03

n04

n05

n06

n07

n08

n09

n10

n11

n12

n13

n14

n15

n16

n17

n18

n19

n20

n21

n22

K6-1/K6-2/K5-1

K6-1

K6-2

K5-1

K5-2/K4-1/K4-2

K5-2

K4-1

K4-2

K3-1

K3-1

K3-2

K3-2

K2-1

K2-1

K2-2

K2-2

K7-1

K7-1

Operate

Reset

DC+

DC-

Figure 3.5-1 Electrical reset relay type MD1501-571 (Output 9 NO contacts and 1 NC contact)

Coilhealthy

LEDindicator

Outputcontacts

n02K6-1 Supervision

signalcontact

n01

n22n21

OperatingLED

indicator

K2 K4Initiationcontact

Reset

n19

n20

n04K5-1

n10K3-1n09

n18K7-1n17

K5 K6K3K1

V

L2

L1

K7

Operate

K2-2

OP1

n12K3-2

n11

n14K1-1n13

n16K1-2

n15

Reset

K2-1

DC+ DC-

n03

n06K4-1

n05

n08K4-2

n07

n01

n02

n03

n04

n05

n06

n07

n08

n09

n10

n11

n12

n13

n14

n15

n16

n17

n18

n19

n20

n21

n22

K6-1

K6-1

K5-1

K5-1

K4-1

K4-1

K4-2

K3-1

K3-1

K3-2

K3-2

K1-1

K1-1

K1-2

K1-2

K7-1

K7-1

Operate

Reset

DC+

DC-

K4-2

Figure 3.5-2 Electrical reset relay type MD1501-571 (Output 6 NO contacts and 2 NC contacts)


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3 Operation Theory


Application

Electrical reset relay requires a voltage to be applied to the element to reset the contacts. It may

be used for various applications as repeat relay, control relay or signal selection etc. subject to the

requirement of applications. The high burden provides greater immunity to capacitance discharge

currents resulted at the inception of an earth fault on DC circuitry. This makes the relay suitable for

use in distributed tripping or control circuitry where the initiating contact may be remote from the

relay.

Principle

Relay K1~K6 are latched relays, they will maintain the position after triggered by initiation contact

at terminal n19 even the initiation contact is released. The output contacts of K1~K6 can be used

for tripping circuit breaker, operating secondary equipments and applied in other secondary

circuits. If the relay is in operated condition, the LED indicator L2 (Red) will be lit until the relay is

reset.

Relay operating coil supervision circuit is composed of opto-coupler (OP1) and relay K7, it

continuously monitors relay coils and releases alarm via signal contact n17 and n18 under

abnormal situations, such as coil open-circuited, loss of DC power supply etc. If the relay coil

circuitry is healthy, the LED indicator L1 is lit (Green). After the relay is operated, the indicator L2 is

kept via contact K2-2.

Output contact mode

Two kinds of output contact mode are provided, please refer to Figure 3.5-1andFigure 3.5-2for

details.

LED indicator

LED indicator L1 (RLY COIL): green, relay status supervision indicator, normally green if type

MD1501-571 is operating normally, it will go out due to relay coil fault.

LED indicator L2 (LOCKOUT): red, operating status indicator, it is off if type MD1501-571 is

operating normally, it will turn on if the relay operates.



NOTE!







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3.6 Type MD1501-572 (Self reset relay with electrical reset LED flag)


outputcontacts

n02K6-1

Relaysupervision

signalcontact

n01

n22n21

K2 K4

n03

K6-2

n19

n04K5-1

n06K5-2

n05

n07K4-1

n08K4-2

n10K3-1

n09

n18K7-1n17

K5 K6K3

V

L2

L1

K7

K1-1

K1-2

OP1

n12K3-2

n11

n14K2-1

n13

n16K2-2

n15

V V V V V

n20

K1

Reset

Initiation

contact

Relaycoil

Supervision

Opera

ting

rela

y

OperatingLED

indicator

Reset

Operatingcircuitry

n01

n02

n03

n04

n05

n06

n07

n08

n09

n10

n11

n12

n13

n14

n15

n16

n17

n18

n19

n20

n21

n22

K6-1/K6-2/K5-1

K6-1

K6-2

K5-1

K5-2/K4-1/K4-2

K5-2

K4-1

K4-2

K3-1

K3-1

K3-2

K3-2

K2-1

K2-1

K2-2

K2-2

K7-1

K7-1

Initiation

Reset

DC+

DC-

Figure 3.6-1 Self reset auxiliary relay type MD1501-572

Application

Self reset relays reset when initiating signal is removed, making them suitable for use as trip

repeat relay and general flagging purpose. The high burden provides greater immunity to

capacitance discharge currents resulted at the inception of an earth fault on DC circuitry. This

makes the relay suitable for use in distributed tripping or control circuitry where the initiating

contact may be remote from the relay.

Principle

Relay K2~K6 are follower relays, they will be energized and reset if initiation contact at terminal

n19 is closed and released respectively. The output contacts of K2~K6 can be used for tripping

circuit breaker, operating secondary equipments and applied in other secondary circuits. K1 is a

magnetic latched relay operated together with K2~K6 relays. If the relay is in operated condition,

the LED indicator L2 (Red) will be lit by K1 normally open contact until the relay is reset. Another

K1 contact, normally closed, is internally wired as cut-off contact for economizing element. After

relay operation, this reduces the burden by switching out shunt resistance.


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3 Operation Theory


Relay operating coil supervision circuit is composed of opto-coupler (OP1) and relay K7, it

continuously monitors relay coils and releases alarm via signal contact n17 and n18 under

abnormal situations, such as coil open-circuited, loss of DC power supply etc. If the relay coil

circuitry is healthy, the LED indicator L1 is lit (Green). After the relay is operated, the indicator L1 is

kept via contact K1-2.

LED indicator

LED indicator L1 (RLY COIL): green, relay status supervision indicator, normally green if type

MD1501-572 is operating normally, it will go out due to relay coil fault.

LED indicator L2 (PICK UP): red, operating status indicator, it is off if type MD1501-572 is

operating normally, it will turn on if the relay operates.



NOTE!







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4 Installation

Table of Contents

4 Installation ....................................................................................... 4-a

4.1 General ............................................................................................................. 4-1

4.2 Safety Information........................................................................................... 4-1

4.3 Checking the Shipment .................................................................................. 4-2

4.4 Material and Tools Required .......................................................................... 4-2

4.5 Device Location and Ambient Conditions .................................................... 4-2

4.6 Mechanical Installation ................................................................................... 4-3

4.7 Electrical Installation and Wiring ................................................................... 4-5


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4.1 General

The equipment must be shipped, stored and installed with the greatest care.

Choose the place of installation that is facilitate for connection. Air must circulate freely around the

equipment. Observe all the requirements regarding place of installation and ambient conditions

given in this instruction manual.

Take care that the external wiring is properly brought into the equipment and terminated correctly

and pay special attention to grounding. Strictly observe the corresponding guidelines contained in

this section.

4.2 Safety Instructions

This section contains safety information. Warning signs are presented which attend the user to becareful during certain operations in order to avoid human injuries or damage to equipment.

Warning signs

WARNING!

Strictly follow the company and country safety regulations. Working in a high voltage

environment requires serious approach to avoid human injuries and damage to equipment.

Do not touch circuitry during operation. Potentially lethal voltages and currents are

present.

Always avoid touching the circuitry when the cover is removed. The product contains

electronic circuit which can be damaged if exposed to static electricity (ESD). The

electronic circuitries also contain high voltage which is lethal to humans.

Always use suitable isolated test pins when measuring signals in open circuitry. Potentially

lethal voltages and currents are present.

Never connect or disconnect a wire and/or a connector to or from a equipment during

normal operation. Hazardous voltages and currents are present that may be lethal.

Operation may be disrupted and equipment and measuring circuitry may be damaged.

Always connect the protection equipment to protective ground, regardless of the operating

conditions. This also applies to special occasions such as bench testing, demonstrations

and off-site configuration. Operating the protection equipment without proper grounding

may damage both terminal and measuring circuitry, and may cause injuries in case of an

accident.

Never unmount the front or back cover from a powered equipment or from a protection

equipment connected to powered circuitry. Potentially lethal voltages and currents are

present.

Caution signs


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CAUTION!

Always transport modules using certified conductive bags. Always handle modules using a

conductive wrist strap connected to protective ground and on a suitable antistatic surface.

Electrostatic discharge (ESD) may cause damage to the module.

Do not connect live wires to the protection equipment. Internal circuitry may be damaged.

Take care to avoid electrical shock if accessing wiring and connection equipment when

installing and commissioning.

4.3 Checking the Shipment

Check that the consignment is complete immediately upon receipt. Notify the nearest NR

Company or agent, should departures from the delivery note, the shipping papers or the order be

found.

Visually inspect all the material when unpacking it. When there is evidence of transport damage,

lodge a claim immediately in writing with the last carrier and notify the nearest NR Company or

agent.

If the equipment is not going to be installed immediately, store all the parts in their original packing

in a clean dry place at a moderate temperature. The humidity at a maximum temperature and the

permissible storage temperature range in dry air are listed in Chapter 2.

4.4 Material and Tools Required

The necessary mounting kits will be provided, including screws, pincers and assembly

instructions.

A suitable drill and spanners are required to secure the cubicles to the floor using the plugs

provided (if this relay is mounted in cubicles).

4.5 Device Location and Ambient Conditions

The place of installation should permit easy access especially to front of the device, i.e. to the

human machine interface of the equipment.

There should also be free access at the rear of the equipment for additions and replacement of

electronic boards.

Since every piece of technical equipment can be damaged or destroyed by inadmissible ambient

conditions, such as:

1. The location should not be exposed to excessive air pollution (dust, aggressive substances).

2. Severe vibration, extreme changes of temperature, high levels of humidity, surge voltages of


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high amplitude and short rise time and strong induced magnetic fields should be avoided as

far as possible.

3. Air must not be allowed to circulate freely around the equipment.

The equipment can in principle be mounted in any attitude, but it is normally mounted vertically

(visibility of markings).

WARNING!

Excessively high temperature can appreciably reduce the operating life of this relay.

4.6 Mechanical Installation

Following six figures show the front view of the six types auxiliary relay. A RESETpush button is

equipped for type MD1501-571 and type MD1501-572. Type MD1501-551, type MD1501-552,

type MD1501-556 and type MD1501-561 do not have RESETpush button.


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Figure 4.6-1 Front view of each auxiliary relay

Following two figures show the dimensions of relay for reference in mounting.

Figure 4.6-2 Dimensions of equipment


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Figure 4.6-3 Trepanning dimensions of equipment

NOTE!

It is necessary to leave enough space top and bottom of the cut-out in the cubicle for heat

emission of this relay.

4.7 Electrical Installation and Wiring

4.7.1 Grounding Guidelines

Switching operations in HV installations generate transient over voltages on control signal cables.

There is also a background of electromagnetic RF fields in electrical installations that can induce

spurious currents in the devices themselves or the leads connected to them. All these influences

can influence the operation of electronic apparatus.

On the other hand, electronic apparatus can transmit interference that can disrupt the operation of

other apparatus. In order to minimize these influences as far as possible, certain standards have

to be observed with respect to grounding, wiring and screening.


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NOTE!

All these precautions can only be effective if the station ground is of good quality.

4.7.2 Cubicle GroundingThe cubicle must be designed and fitted out such that the impedance for RF interference of the

ground path from the electronic device to the cubicle ground terminal is as low as possible.

Metal accessories such as side plates, blanking plates etc., must be effectively connected

surface-to-surface to the grounded frame to ensure a low-impedance path to ground for RF

interference. The contact surfaces must not only conduct well, they must also be non-corroding.

NOTE!

If the above conditions are not fulfilled, there is a possibility of the cubicle or parts of it

forming a resonant circuit at certain frequencies that would amplify the transmission of

interference by the devices installed and also reduce their immunity to induced

interference.

Movable parts of the cubicle such as doors (front and back) or hinged equipment frames must be

effectively grounded to the frame by three braided copper strips (seeFigure 4.7-1).

The metal parts of the cubicle housing and the ground rail are interconnected electrically

conducting and corrosion proof. The contact surfaces shall be as large as possible.

NOTE!

For metallic connections please observe the voltage difference of both materials according

to the electrochemical code.

The cubicle ground rail must be effectively connected to the station ground rail by a grounding strip

(braided copper).


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Door or hinged

equipment frame

Cubicle ground

rail close to floor

Station

ground

Braided

copper strip

Conducting

connection

Figure 4.7-1 Cubicle grounding system

4.7.3 Ground Connection on the Device

Always make sure established guidelines for this type of terminal is followed during installation..

1. Connecting the auxiliary power:

All modules of the device demand to introduce DC operation power supply. The DC power supply

will be injected to the input terminals of various modules after connecting to an air switch with a

certain capacity.

2. Input/output signal connectors:

The input and output circuits will be connected with the terminal board generally, external circuit

will connect the relevant terminal board through dedicated cable.


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5 Comm issioning


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5 Commissioning

Table of Contents

5 Commissioning ............................................................................... 5-a

5.1 General ............................................................................................................. 5-1

5.2 Safety Instructions .......................................................................................... 5-1

5.3 Commission Tools .......................................................................................... 5-1

5.4 Product Checks ............................................................................................... 5-2

5.4.1 With the Relay De-energized .............................................................................................. 5-2

5.4.2 With the Relay Energized .................................................................................................... 5-4

5.4.3 Final Checks ........................................................................................................................ 5-4


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MD1501 Series Auxil iary Relay

5-b

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5 Comm issioning


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5.1 General

Before carrying out any work on the equipment, the user should be familiar with the contents of the

safety and technical data sections and the ratings on the equipments rating label.

5.2 Safety Instructions

WARNING!

Hazardous voltages are present in this electrical equipment during operation.

Non-observance of the safety rules can result in severe personal injury or property damage.

WARNING!

Only the qualified personnel shall work on and around this equipment after becoming

thoroughly familiar with all warnings and safety notices of this manual as well as with the

applicable safety regulations.

Particular attention must be drawn to the following:

Hazardous voltages can be present on all circuits and components connected to the supply

voltage or to the measuring and test quantities.

The limit values stated in the Chapter Technical Data must not be exceeded at all, not even

during testing and commissioning.

When testing the device with secondary test equipment, make sure that no other

measurement quantities are connected. Take also into consideration that the trip circuits and

maybe also close commands to the circuit breakers and other primary switches are

disconnected from the device unless expressly stated.

WARNING!

Primary test may only be carried out by qualified personnel, who are familiar with the

commissioning of protection system, the operation of the plant and safety rules and

regulations (switching, earthing, etc.).

5.3 Commission Tools

Minimum equipment required:

Multifunctional protection tester (for example: CMC356 multifunctional protection tester of

Omicron).

Multimeter with suitable AC voltage range of 0~500V and DC voltage range of 0~250V


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5 Commiss ion ing


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Date: 2012-06-04

respectively.

NOTE!

Modern test set may contain many of the above features in one unit.

Optional equipment:

An electronic or brushless insulation tester with a DC output not exceeding 500V (for

insulation resistance test when required).

5.4 Product Checks

These product checks cover all aspects of the relay which should be checked to ensure that it has

not been physically damaged prior to commissioning, is functioning correctly and all input quantity

measurements are within the stated tolerances.

5.4.1 With the Relay De-energized

This relay is fully numerical and the hardware is continuously monitored. Commissioning tests can

be kept to a minimum and need only include hardware tests and conjunctive tests. The function

tests are carried out according to users correlative regulations.

5.4.1.1 Visual Inspection

After unpacking the product, check for any damage to the relay case. If there is any damage,

internal module might also have been affected, contact the vendor. The following items listed is

necessary.

Protection panel

Carefully examine the protection panel, equipment inside and other parts inside to see that no

physical damage has occurred since installation.

The rated information of other auxiliary protections should be checked to ensure it is correct

for the particular installation.

Panel wiring

Check the conducting wire which is used in the panel to assure that their cross section

meeting the requirement.

Carefully examine the wiring to see that they are no connection failure exists.

Label

Check all the isolator binary inputs, terminal blocks, indicators, switches and push buttons to

make sure that their labels meet the requirements of this project.

Earthing cable

Check whether the earthing cable from the panel terminal block is safely screwed to the panel


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5 Comm issioning


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steel sheet.

Switch, keypad, isolator binary inputs and push button

Check whether all the switches, equipment keypad, isolator binary inputs and push buttons

work normally and smoothly.

5.4.1.2 Insulation Test (if required)

Insulation resistance tests are only necessary during commissioning if it is required for them to be

done and they have not been performed during installation.

Isolate all wiring from the earth and test the isolation with an electronic or brushless insulation

tester at a DC voltage not exceeding 500V, The circuits need to be tested should include:

Optic-isolated control inputs

Output contacts

Grounding terminal

The insulation resistance should be greater than 100M at 500V.

Test method:

To unplug all the terminals sockets of this relay, and do the insulation resistance test for each

circuit above with an electronic or brushless insulation tester.

On completion of the insulation resistance tests, ensure all external wiring is correctly reconnected

to the equipment.

5.4.1.3 External Wiring

Check that the external wiring is correct to the relevant relay diagram and scheme diagram.

Ensure as far as practical that phasing/phase rotation appears to be as expected.

Check the wiring against the schematic diagram for the installation to ensure compliance with the

customers normal practice.

5.4.1.4 Auxiliary Power Supply

The relay only can be operated under the auxiliary power supply depending on the relays nominal

power supply rating.

The incoming voltage must be within the operating range specified in Chapter 2, before energizing

the relay, measure the auxiliary supply to ensure it within the operating range.

Other requirements to the auxiliary power supply are specified in Chapter 2. See this section for

further details about the parameters of the power supply.

WARNING!

Energize this relay only if the power supply is within the specified operating ranges inChapter 2.


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5.4.2 With the Relay Energized

The following check verify that the relay hardware is functioning correctly and should be carried

out with the auxiliary supply applied to the relay.

The trip circuit should also remain isolated to prevent accidental operation of the associated circuit

breaker for these checks.

Testing the Binary Inputs and Binary Outputs

This test checks that all the binary inputs and binary outputs on the equipment are functioning

correctly.

Ensure that the voltage applied on the binary input must be within the operating range.

The binary inputs should be energized one at a time, see external connection diagrams for

terminal numbers. If the relay circuit is operating normally and corresponding binary output is

energized, it means the binary input is valid.

5.4.3 Final Checks

After the above tests are completed, remove all test or temporary shorting leads, etc. If it has been

necessary to disconnect any of the external wiring from the protection in order to perform the

wiring verification tests, it should be ensured that all connections are replaced in accordance with

the relevant external connection or scheme diagram.

Ensure the equipment is put into service, and make sure that all abnormality that may effect the

device have been cleared and signal indicators have been reset.


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6 Maintenance

Table of Contents

6 Maintenance .................................................................................... 6-a

6.1 Failure Tracing and Repair ............................................................................. 6-1

6.2 Replace Failed Relay ...................................................................................... 6-1

6.3 Cleaning ........................................................................................................... 6-2

6.4 Storage ............................................................................................................. 6-2


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6 Maintenance


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6 Maintenanc e


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After installation, regular maintenance of the equipment is recommended. If the equipment runs

under harsh natural conditions and operates rarely, then regularly confirm whether the device is

operating normally and the external wiring is good.

6.1 Failure Tracing and Repair

Failures will be detected by automatic supervision or regular testing.

When a failure is detected during regular testing, confirm the following:

Test circuit connections are correct

Correct power supply voltage is applied

Test procedures comply with those stated in the manual

6.2 Replace Failed Relay

If the failure is identified in the relay and the user has spare relays, the user can recover the relay

by replacing the failed relay.

Repair at the site should be limited to relay replacement. Maintenance at the component level is

not recommended.

Check that the replacement relay has an identical type and rated parameters to the removed relay.

Furthermore.

The relay type is indicated on the relay.

CAUTION!

When handling a relay, take anti-static measures such as wearing an earthed wrist band

and placing modules on an earthed conductive mat. Otherwise, many of the electronic

components could suffer from damages.

WARNING!

Hazardous voltage can be present in the DC circuit just after switching off the DC power

supply. It takes approximately 30 seconds for the voltage to discharge.

WARNING!

Units and modules may only be replaced while the supply is switched off and only by

appropriately trained and qualified personnel. Strictly observe the basic precautions to

guard against electrostatic discharge.


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6 Maintenance


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DANGER!

After replacing relays, be sure to check that the external wiring is same as that before the

replacement. If this is not the case, there is a danger of the unintended operation of

switchgear taking place or of relays not functioning correctly. Persons may also be put in

danger.

6.3 Cleaning

Before cleaning the relay, ensure that DC supply is isolated to prevent any chance of an electric

shock. Use a smooth cloth to clean the front panel. Do not use abrasive material or detergent

chemicals.

6.4 Storage

The spare relay or module should be stored in a dry and clean room. Based on IEC standard

60255-1 the storage temperature should be from -40C to 70C, but the temperature of from -10C

to 40C is recommended for long-term storage.


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7 Decomm issioning and Disposal


Date: 2012-06-04

7 Decommissioning and Disposal

Table of Contents

7 Decommissioning and Disposal .................................................... 7-a

7.1 Decommissioning ........................................................................................... 7-1

7.2 Disposal ........................................................................................................... 7-1


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7-b

Date: 2012-06-04


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Date: 2012-06-04

7.1 Decommissioning

1. Switching off

To switch off the external miniature circuit breaker of the power supply.

2. Disconnecting Cables

Disconnect the cables connected to the equipment.

DANGER!

Before disconnecting the power supply cables that connected with the equipment, make

sure that the external miniature circuit breaker of the power supply is switched off.

3. Dismantling

The equipment may now be removed from the system cubicle, after which the cubicles may also

be removed.

DANGER!

When the station is in operation, make sure that there is an adequate safety distance to

live parts, especially as dismantling is often performed by unskilled personnel.

7.2 Disposal

In every country there are companies specialized in the proper disposal of electronic waste.

NOTE!

Strictly observe all local and national regulations when disposing of the device.


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7-2

Date: 2012-06-04


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8 Manual Version Histo ry


Date: 2013-04-26


In the latest version of the instruction manual, several descriptions on existing features have been

modified.

Manual version and modification history records

Manual VersionDate Description of change

Source New

R1.00 2012-06-04 Form the original manual.

R1.00 R1.01 2013-01-21

Main technical data of each type are removed to Chapter 2;

Add a kind of output contact mode for type MD1501-571;

Breaking capacity for contact is modified.

R1.01 R1.02 2013-04-26The definition of n15 and n16 for type MD1501-561 are

exchanged


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md1501 series x instruction manual en domestic general x r1.02 (en czxl1501.0086.0003)

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