00407710 n68e 22 cabinet installation guide (v200r010_01)

N68E-22 Cabinet Installation Guide

Issue 01

Date 2008-03-20

Part Number 00407710

Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd

Huawei Technologies Co., Ltd. provides customers with comprehensive technical support and service. For anyassistance, please contact our local office or company headquarters.

Huawei Technologies Co., Ltd.Address: Huawei Industrial Base

Bantian, LonggangShenzhen 518129People's Republic of China

Website: http://www.huawei.com

Email: [email protected]

Copyright © Huawei Technologies Co., Ltd. 2008. All rights reserved.No part of this document may be reproduced or transmitted in any form or by any means without prior writtenconsent of Huawei Technologies Co., Ltd. Trademarks and Permissions

and other Huawei trademarks are the property of Huawei Technologies Co., Ltd.All other trademarks and trade names mentioned in this document are the property of their respective holders. NoticeThe information in this document is subject to change without notice. Every effort has been made in thepreparation of this document to ensure accuracy of the contents, but the statements, information, andrecommendations in this document do not constitute a warranty of any kind, express or implied.

Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd

http://www.huawei.com

mailto:[email protected]

Contents

About This Document.....................................................................................................................1

1 Safety Information.....................................................................................................................1-11.1 Safety Precautions...........................................................................................................................................1-11.2 Electricity Safety.............................................................................................................................................1-31.3 Inflammable Environment...............................................................................................................................1-51.4 Battery.............................................................................................................................................................1-51.5 Radiation.........................................................................................................................................................1-71.6 Working at Heights.........................................................................................................................................1-91.7 Mechanical Safety.........................................................................................................................................1-111.8 Others............................................................................................................................................................1-12

2 N68E-22 Cabinet Overview......................................................................................................2-1

3 Preparing for the N68E-22 Cabinet Installation...................................................................3-13.1 Unpacking the RNC........................................................................................................................................3-23.2 Preparing Tools for N68E-22 Cabinet Installation.........................................................................................3-8

4 Installing the N68E-22 Cabinet................................................................................................4-1

5 Installing the N68E-22 Cabinet on the Concrete Floor.......................................................5-15.1 Materials for Installing the N68E-22 Cabinet on the Concrete Floor.............................................................5-25.2 Template Files for Installing the N68E-22 Cabinet........................................................................................5-25.3 Positioning the N68E-22 Cabinet on the Concrete Floor................................................................................5-45.4 Securing the N68E-22 Cabinet on the Concrete Floor....................................................................................5-95.5 Testing the Insulation of the N68E-22 Cabinet.............................................................................................5-145.6 Combining N68E-22 Cabinets......................................................................................................................5-16

6 Installing the N68E-22 Cabinet on the ESD Floor...............................................................6-16.1 Materials for Installing the N68E-22 Cabinet on the ESD Floor....................................................................6-26.2 Template Files for Installing the N68E-22 Cabinet........................................................................................6-26.3 N6X Series Support Assembly........................................................................................................................6-46.4 Positioning the N68E-22 Cabinet on the ESD Floor.......................................................................................6-66.5 Assembling the Support and the Guide Rail.................................................................................................6-106.6 Fixing the N68E-22 Cabinet on the ESD Floor............................................................................................6-146.7 Testing the Insulation of the N68E-22 Cabinet.............................................................................................6-186.8 Combining N68E-22 Cabinets......................................................................................................................6-20

N68E-22 Cabinet Installation Guide Contents

Issue 01 (2008-03-20) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd

i

6.9 Restoring the ESD Floor...............................................................................................................................6-22

7 Installing Power Cables and PGND Cables for the N68E-22 Cabinet.............................7-17.1 RNC Power Cables and PGND Cables to Be Installed...................................................................................7-2

7.1.1 RNC Power Cables.................................................................................................................................7-27.1.2 RNC PGND Cables................................................................................................................................7-5

7.2 Connections of RNC Power Cables and PGND Cables................................................................................7-107.3 Installation Specifications for RNC Power Cables and PGND Cables.........................................................7-117.4 Installing Power Cables and PGND Cables Between the N68E-22 Cabinet and the PDF...........................7-11

7.4.1 Overhead and Underfloor Cabling Modes...........................................................................................7-127.4.2 Installing Power Cables and PGND Cables Between the N68E-22 Cabinet and the PDF (OverheadCabling).........................................................................................................................................................7-157.4.3 Installing Power Cables and PGND Cables Between the N68E-22 Cabinet and the PDF (UnderfloorCabling).........................................................................................................................................................7-17

7.5 Installing PGND Cables Between the Adjacent N68E-22 Cabinets.............................................................7-207.6 Checking the Power-On Status of the RNC Cabinets...................................................................................7-21

8 Installing Accessories for the N68E-22 Cabinet...................................................................8-18.1 N68E-22 Cabinet Accessories.........................................................................................................................8-28.2 Installing Side Doors of the N68E-22 Cabinet................................................................................................8-28.3 Installing Front and Back Doors of N68E-22 Cabinet....................................................................................8-48.4 Installing PGND Cables for N68E-22 Cabinet Doors....................................................................................8-5

9 Labeling RNC Cabinets............................................................................................................9-1

10 Labeling Power Cables and PGND Cables of the RNC.................................................10-1

11 Appendix..................................................................................................................................11-111.1 Checklist for RNC Cabinet Installation......................................................................................................11-211.2 Exploded View of the N68E-22 Cabinet.....................................................................................................11-311.3 Layout of Power Switches on the RNC Cabinet.........................................................................................11-611.4 Connections of Power Cables and PGND Cables in the RNC Cabinet......................................................11-7

Contents N68E-22 Cabinet Installation Guide

ii Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd

Issue 01 (2008-03-20)

Figures

Figure 1-1 Wearing an ESD wrist strap...............................................................................................................1-5Figure 1-2 Lifting a weight................................................................................................................................1-10Figure 1-3 Slant angle........................................................................................................................................1-11Figure 1-4 One meter higher than the eave........................................................................................................1-11Figure 2-1 Appearance of the single-door N68E-22 cabinet ...............................................................................2-2Figure 2-2 Appearance of the double-door N68E-22 cabinet .............................................................................2-3Figure 3-1 Straightening the tongue.....................................................................................................................3-4Figure 3-2 Removing the cover from the case.....................................................................................................3-5Figure 3-3 Removing the side boards...................................................................................................................3-6Figure 3-4 Unpacking a carton ............................................................................................................................3-7Figure 5-1 Equipment room layout (unit: mm)....................................................................................................5-3Figure 5-2 Marking template for installing the N68E-22 cabinet on the concrete floor (unit: mm)....................5-4Figure 5-3 Marking template for installing the N68E-22 cabinet on the ESD floor (unit: mm)..........................5-4Figure 5-4 Mounting holes for one cabinet (unit: mm)........................................................................................5-6Figure 5-5 Mounting holes for a row of cabinets (unit: mm)...............................................................................5-6Figure 5-6 Digging a pit.......................................................................................................................................5-7Figure 5-7 Drilling a hole.....................................................................................................................................5-7Figure 5-8 Expansion bolt assembly....................................................................................................................5-8Figure 5-9 Installing expansion bolt assembly (1)...............................................................................................5-8Figure 5-10 Installing expansion bolt assembly (2).............................................................................................5-9Figure 5-11 Removing the packing accessory....................................................................................................5-10Figure 5-12 State of the lock of each door.........................................................................................................5-10Figure 5-13 Removing the short supporting beam.............................................................................................5-11Figure 5-14 Removing the air filter....................................................................................................................5-12Figure 5-15 Securing the cabinet........................................................................................................................5-13Figure 5-16 Leveling the cabinet........................................................................................................................5-13Figure 5-17 Insulation test..................................................................................................................................5-15Figure 5-18 Repositioning the air filter..............................................................................................................5-16Figure 5-19 Connecting the connecting plates...................................................................................................5-17Figure 5-20 Using a level bar to check the levelness.........................................................................................5-18Figure 6-1 Equipment room layout (unit: mm)....................................................................................................6-3Figure 6-2 Marking template for installing the N68E-22 cabinet on the concrete floor (unit: mm)....................6-4Figure 6-3 Marking template for installing the N68E-22 cabinet on the ESD floor (unit: mm)..........................6-4

N68E-22 Cabinet Installation Guide Figures


iii

Figure 6-4 N6X series supports............................................................................................................................6-5Figure 6-5 Guide rail............................................................................................................................................6-6Figure 6-6 Horizontal pallet.................................................................................................................................6-6Figure 6-7 Installation holes for one cabinet (unit: mm)......................................................................................6-7Figure 6-8 Installation holes for a row of cabinets (unit: mm).............................................................................6-8Figure 6-9 Digging a pit before drilling...............................................................................................................6-8Figure 6-10 Drilling holes....................................................................................................................................6-9Figure 6-11 Expansion bolt assembly..................................................................................................................6-9Figure 6-12 Installing the expansion bolt assembly (I)......................................................................................6-10Figure 6-13 Installing the expansion bolt assembly (II).....................................................................................6-10Figure 6-14 Adjusting the height of the support................................................................................................6-11Figure 6-15 Assembling guide rails...................................................................................................................6-12Figure 6-16 Fixing the support...........................................................................................................................6-13Figure 6-17 Insulation plate...............................................................................................................................6-13Figure 6-18 Installing supports in a row............................................................................................................6-14Figure 6-19 Removing the wooden packing accessories...................................................................................6-15Figure 6-20 State of locks on the front and rear doors.......................................................................................6-15Figure 6-21 Removing the short supporting beam in front of the cabinet.........................................................6-16Figure 6-22 Removing the air filter....................................................................................................................6-17Figure 6-23 Installing the cabinet.......................................................................................................................6-17Figure 6-24 Leveling the cabinet........................................................................................................................6-18Figure 6-25 Insulation test..................................................................................................................................6-19Figure 6-26 Repositioning the air filter..............................................................................................................6-20Figure 6-27 Connecting the connecting plates...................................................................................................6-21Figure 6-28 Using a level bar to check the levelness.........................................................................................6-22Figure 6-29 Installing the horizontal pallet........................................................................................................6-23Figure 6-30 Restoring the ESD floor around the racks......................................................................................6-23Figure 7-1 -48 V/RTN internal power cable of the RNC.....................................................................................7-4Figure 7-2 External power cable of the N68E-22 cabinet....................................................................................7-4Figure 7-3 External power cable of the N68-21-N cabinet..................................................................................7-4Figure 7-4 External PGND cable of the N68-21-N cabinet...............................................................................7-10Figure 7-5 External PGND cable of the N68E-22 cabinet.................................................................................7-10Figure 7-6 Internal RNC PGND cable...............................................................................................................7-10Figure 7-7 Cable connections.............................................................................................................................7-10Figure 7-8 Cable holes of the RNC cabinet.......................................................................................................7-13Figure 7-9 Overhead cabling mode....................................................................................................................7-14Figure 7-10 Underfloor cabling mode................................................................................................................7-14Figure 7-11 Installing power cables and PGND cables between the N68E-22 cabinet and the PDF (overheadcabling)................................................................................................................................................................7-15Figure 7-12 Installing power cables and PGND cables between the N68E-22 cabinet and the PDF (underfloorcabling)................................................................................................................................................................7-18Figure 7-13 PGND cables between adjacent cabinets........................................................................................7-21Figure 8-1 Installation of a side door for the N68E-22 cabinet............................................................................8-3

Figures N68E-22 Cabinet Installation Guide

iv Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd

Issue 01 (2008-03-20)

Figure 8-2 Installation of a front/back door for the N68E-22 cabinet..................................................................8-4Figure 8-3 Connecting PGND cables to N68E-22 cabinet doors.........................................................................8-5Figure 9-1 Row labels..........................................................................................................................................9-1Figure 9-2 Column labels.....................................................................................................................................9-1Figure 9-3 Position for attaching the product label .............................................................................................9-2Figure 11-1 Exploded view of the N68E-22 cabinet..........................................................................................11-4Figure 11-2 Assignment of power switches on the RSR power distribution box..............................................11-6Figure 11-3 Layout of power switches on the RBR power distribution box.....................................................11-7Figure 11-4 Connections of power cables and PGND cables in the N68-21-N cabinet....................................11-8Figure 11-5 Connections of power cables and PGND cables in the N68E-22 cabinet....................................11-10

N68E-22 Cabinet Installation Guide Figures


v

Tables

Table 2-1 Technical specifications for the N68E-22 cabinet...............................................................................2-3Table 3-1 General tools required for N68E-22 cabinet installation.....................................................................3-9Table 6-1 Materials required for the installation..................................................................................................6-2Table 6-2 Applicable height range of each support type......................................................................................6-5Table 7-1 External power cables of the N68-21-N cabinet..................................................................................7-2Table 7-2 External power cables of the N68E-22 cabinet....................................................................................7-3Table 7-3 Internal power cables of the RNC........................................................................................................7-3Table 7-4 PGND cables of the N68-21-N cabinet................................................................................................7-5Table 7-5 PGND cables of the N68E-22 cabinet.................................................................................................7-7Table 8-1 N68E-22 cabinet accessories to be installed........................................................................................8-2Table 11-1 Checked items for RNC cabinet installation....................................................................................11-2Table 11-2 Parts on the cabinet..........................................................................................................................11-5Table 11-3 Relation between the switches and subracks....................................................................................11-7Table 11-4 Connections of power cables and PGND cables in the RNC cabinet (N68-21-N)..........................11-8Table 11-5 Connections of power cables and PGND cables in the RNC cabinet (N68E-22)..........................11-10

N68E-22 Cabinet Installation Guide Tables


vii

About This Document

PurposeThis document describes the N68E-22 cabinet installation. It covers how to install the cabinet,external power cables, PGND cables, and how to attach engineering labels for RNC power cablesand PGND cables.

Product VersionThe following table lists the product versions related to this document.

Product Name Product Version

RNC V200R010

Intended AudienceThis document is intended for RNC installers.

Organization

1 Safety Information

2 N68E-22 Cabinet Overview

The N68E-22 cabinet features a modular design. It provides ample space for installing devicessuch as subracks, servers, and LAN switches so as to facilitate capacity expansion andmaintenance.

3 Preparing for the N68E-22 Cabinet Installation

Before the installation, you need to unpack the N68E-22 cabinet. Ensure that all tools requiredfor installing the N68E-22 cabinet are ready.

4 Installing the N68E-22 Cabinet

The N68E-22 cabinet installation involves installing the cabinet, accessories, external powercables, and PGND cables. In addition, you also need to check the power-on status of the cabinet,attach engineering labels to the cabinet, and attach engineering labels to the external powercables and PGND cables.

N68E-22 Cabinet Installation Guide About This Document


1

5 Installing the N68E-22 Cabinet on the Concrete Floor

This describes how to install the N68E-22 cabinet on the concrete floor.

6 Installing the N68E-22 Cabinet on the ESD Floor

This describes how to install the N68E-22 cabinet on the ESD floor. In the equipment room withESD floor, you need to install the N68E-22 cabinet on the N6X series supports.

7 Installing Power Cables and PGND Cables for the N68E-22 Cabinet

This describes how to install the power cables and PGND cables between the N68E-22 cabinetand the Power Distribution Frame (PDF). When the cabinets are combined, you also need toinstall the PGND cables between the N68E-22 cabinets.

8 Installing Accessories for the N68E-22 Cabinet

This describes how to install the PGND cables on the side door, front door, and back door ofthe N68E-22 cabinet.

9 Labeling RNC Cabinets

The labels to be attached to the RNC cabinet are the row labels, column labels, and productlabels.

10 Labeling Power Cables and PGND Cables of the RNC

After the power cables and PGND cables of the RNCs are installed, remove the temporary labelsfrom the cables and attach engineering labels to these cables.

11 Appendix

This provides the exploded view of the N68E-22 cabinet and an installation checklist.

Conventions

1. Symbol Conventions

The following symbols may be found in this document. They are defined as follows

Symbol Description

DANGERIndicates a hazard with a high level of risk that, if not avoided,will result in death or serious injury.

WARNINGIndicates a hazard with a medium or low level of risk which, ifnot avoided, could result in minor or moderate injury.

CAUTIONIndicates a potentially hazardous situation that, if not avoided,could cause equipment damage, data loss, and performancedegradation, or unexpected results.

TIP Indicates a tip that may help you solve a problem or save yourtime.

About This Document N68E-22 Cabinet Installation Guide

2 Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd

Issue 01 (2008-03-20)

Symbol Description

NOTE Provides additional information to emphasize or supplementimportant points of the main text.

2. General Conventions

Convention Description

Times New Roman Normal paragraphs are in Times New Roman.

Boldface Names of files,directories,folders,and users are in boldface. Forexample,log in as user root .

Italic Book titles are in italics.

Courier New Terminal display is in Courier New.

3. Command Conventions


Boldface The keywords of a command line are in boldface.

Italic Command arguments are in italic.

[ ] Items (keywords or arguments) in square brackets [ ] are optional.

{x | y | ...} Alternative items are grouped in braces and separated by verticalbars.One is selected.

[ x | y | ... ] Optional alternative items are grouped in square brackets andseparated by vertical bars.One or none is selected.

{ x | y | ... } * Alternative items are grouped in braces and separated by verticalbars.A minimum of one or a maximum of all can be selected.

[ x | y | ... ] * Alternative items are grouped in braces and separated by verticalbars.A minimum of zero or a maximum of all can be selected.

4. GUI Conventions


Boldface Buttons,menus,parameters,tabs,window,and dialog titles are inboldface. For example,click OK.

> Multi-level menus are in boldface and separated by the ">" signs.For example,choose File > Create > Folder .

5. Keyboard Operation

N68E-22 Cabinet Installation Guide About This Document


3


Key Press the key.For example,press Enter and press Tab.

Key1+Key2 Press the keys concurrently.For example,pressing Ctrl+Alt+Ameans the three keys should be pressed concurrently.

Key1,Key2 Press the keys in turn.For example,pressing Alt,A means the twokeys should be pressed in turn.

6. Mouse Operation

Action Description

Click Select and release the primary mouse button without moving thepointer.

Double-click Press the primary mouse button twice continuously and quicklywithout moving the pointer.

Drag Press and hold the primary mouse button and move the pointerto a certain position.

About This Document N68E-22 Cabinet Installation Guide

4 Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd

Issue 01 (2008-03-20)

1 Safety Information

1.1 Safety PrecautionsThis section describes certain safety precautions and helps to choose the measurement deviceand testing device. Read and follow these safety precautions before installing, operating, andmaintaining Huawei devices.

Following All Safety Precautions

Before any operation, read the instructions and precautions in this document carefully tominimize the possibility of accidents.

The Danger, Caution, and Note items in the package of documents do not cover all the safetyprecautions that must be followed. They only provide the generic safety precautions foroperations.

Symbols

DANGERThis symbol indicates that casualty or serious accident may occur if you ignore the safetyinstruction.

CAUTIONThis symbol indicates that serious or major injury may occur if you ignore the safety instruction.

NOTE

This symbol indicates that the operation may be easier if you pay attention to the safety instruction.

N68E-22 Cabinet Installation Guide 1 Safety Information


1-1

Complying with the Local Safety Regulations

When operating the device, comply with the local safety regulations. The safety precautionsprovided in the documents are supplementary. You must comply with the local safetyregulations.

General Installation Requirements

The personnel in charge of installation and maintenance must be trained and master the correctoperating methods and safety precautions before beginning work.

The rules for installing and maintaining the device are as follows:

l Only the trained and qualified personnel can install, operate and maintain the device.

l Only the qualified specialists are allowed to remove the safety facilities, and repair thedevice.

l Any replacement of the device or part of the device (including the software) or any changemade to the device must be performed by qualified or authorized personnel of Huawei.

l Any fault or error that might cause safety problems must be reported immediately to thepersonnel in charge.

Grounding Requirements

The following requirements are applicable to the device to be grounded:

l Ground the device before installation and remove the ground cable after uninstallation.

l Do not operate the device in the absence of a ground conductor. Do not damage the groundconductor.

l The unit (or system) must be permanently connected to the protection ground beforeoperation. Check the electrical connection of the device before operation and ensure thatthe device is reliably grounded.

Safety of Personnel

Ensure the following:

l When lightning strikes, do not operate the device and cables.

l When lightning strikes, unplug the AC power connector. Do not use the fixed terminal ortouch the terminal or antenna connector.

NOTE

The previous two requirements are suitable for the wireless fixed terminal.

l To prevent electric shock, do not connect safety extra-low voltage (SELV) circuits totelecommunication network voltage (TNV) circuits.

l To prevent laser radiation from injuring your eyes, never look into the optical fiber outletwith unaided eyes.

l To prevent electric shock and burns, wear the electrostatic discharge (ESD) clothing, glovesand wrist strap, and remove conductors such as jewelry and watch before operation.

1 Safety Information N68E-22 Cabinet Installation Guide

1-2 Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd

Issue 01 (2008-03-20)

Device Safetyl Before operation, the device must be secured on the floor or other fixed objects, such as

the walls and the mounting racks.l Do not block ventilation openings while the system is running.

l When installing the panel, tighten the screw with the tool.

1.2 Electricity Safety

High Voltage

DANGERl The high voltage power supply provides power for running the system. Direct contact with

the high voltage power supply or contact through damp objects may result in fatal danger.l Non-standard and improper high voltage operations may result in fire and electric shock.

l The personnel who install the AC facility must be qualified to perform operations on highvoltage and AC power supply facilities.

l When installing the AC power supply facility, follow the local safety regulations.

l When operating the AC power supply facility, follow the local safety regulations.

l When operating the high voltage and AC power supply facilities, use the specific toolsinstead of common tools.

l When the operation is performed in a damp environment, ensure that water is kept off thedevice. If the cabinet is damp or wet, shut down the power supply immediately.

ThunderstormThe following requirements are suitable only for the wireless base station or the device with anantenna or GPS antenna.

DANGERIn a thunderstorm, do not perform operations on high voltage and AC power supply facilities oron a steel tower and mast.

High Electrical Leakage

CAUTIONGround the device before powering on the device. Otherwise, the personnel and device are indanger.



1-3

If the "high electrical leakage" flag is stuck to the power terminal of the device, you must groundthe device before powering it on.

Power Cable

CAUTIONDo not install and remove the power cable with a live line. Transient contact between the coreof the power cable and the conductor may generate electric arc or spark, which may cause fireor eye injury.

l Before installing or removing the power cable, turn off the power switch.

l Before connecting the power cable, ensure that the power cable and label comply with therequirements of the actual installation.

Fuse

CAUTIONTo ensure that the system runs safely, when a fuse blows, replace it with a fuse of the same typeand specifications.

Electrostatic Discharge

CAUTIONThe static electricity generated by the human body may damage the electrostatic sensitivecomponents on the circuit board, such as the large-scale integrated circuit (LIC).

In the following situations, the human body generates a static electromagnetic field:

l Movement of body parts

l Clothes friction

l Friction between shoes and the ground

l Holding plastic in hand

The static electromagnetic field will remain within the human body for a long time.

Before contacting the device, plug boards, circuit boards, and application specific integratedcircuits (ASICs), wear a grounded ESD wrist strap. It can prevent the sensitive components frombeing damaged by the static electricity in the human body. If neither the ESD wrist strap nor anappropriate PGND point is provided, wear the ESD gloves.

Figure 1-1shows how to wear an ESD wrist strap.



Issue 01 (2008-03-20)

Figure 1-1 Wearing an ESD wrist strap

1.3 Inflammable Environment

DANGERDo not place the device in the environment that has inflammable and explosive air or fog. Donot perform any operation in this environment.

Any operation of the electrical device in the inflammable environment causes danger.

1.4 Battery

Storage Battery

DANGERBefore handling the storage battery, read the safety precautions for the handling and connectionof the storage battery.

Incorrect operation of storage batteries may cause danger. During operation, ensure thefollowing:

l Prevent any short-circuit.

l Prevent the electrolyte from overflowing and leakage.

Electrolyte overflow may damage the device. It will corrode the metal parts and the circuitboards, and ultimately damage the device and cause short-circuit of the circuit boards.



1-5

General Operations

Before installing and maintaining the storage battery, ensure the following:

l Use special insulation tools.

l Use eye protection devices and operate with care.

l Wear rubber gloves and an apron in case of an electrolyte overflow.

l Always keep the battery upright when moving. Do not place the battery upside down or tiltit.

Short-Circuit

DANGERShort-circuit of the battery may cause injury. Although the voltage of a battery is low, hightransient current generated by short-circuit will release a surge of power.

Keep metal objects away from the battery to prevent short circuit. If they have to be used,disconnect the battery in use before performing any other operation.

Harmful Gas

CAUTIONl Do not use unsealed lead-acid storage batteries, because the gas emitted from it may result

in fire or device corrosion.

l Lay the storage battery horizontally and fix it properly.

The lead-acid storage battery in use will emit flammable gas. Therefore, store it in a place withgood ventilation and take precautions against fire.

High Temperature

CAUTIONHigh temperature may result in distortion, damage, and electrolyte overflow of the battery.

When the temperature of the battery exceeds 60oC, check whether there is acid overflow. If acidoverflow occurs, handle the acid immediately.



Issue 01 (2008-03-20)

Acid

CAUTIONIf the acid overflows, it should be absorbed and neutralized immediately.

When handling a leaky battery, protect against the possible damage caused by the acid. Use thefollowing materials to absorb and neutralize acid spills:

l Sodium bicarbonate (baking soda): NaHCO3

l Sodium carbonate (soda): Na2CO3

Antacids must be used according to the instructions provided by the battery manufacturer.

Lithium Battery

CAUTIONThere is danger of explosion if the battery is incorrectly replaced.

l Replace the lithium battery with the same or equivalent type recommended by themanufacturer.

l Dispose of the used battery according to the instructions provided by the manufacturer.

l Do not dispose of the lithium battery in fire.

1.5 Radiation

Electromagnetic Field Exposure

CAUTIONHigh power radio-frequency signals are harmful to human body.

Before installing or maintaining an antenna on a steel tower or mast with a large number oftransmitter antennas, the operator should coordinate with all parties to ensure that the transmitterantennas are shut down.

The base transceiver station (BTS) has RF radiation (radiation hazard). Suggestions for theinstallation and operation of BTSs are given in the following section. Operators are also requiredto comply with the related local regulations on erecting BTSs.

l The antenna should be located in an area that is inaccessible to the public where the RFradiation exceeds the stipulated value.



1-7

l If the areas where RF radiation exceeds the stipulated value are accessible to workers,ensure that workers know where these areas are. They can shut down the transmitters beforeentering these areas. Such areas may not exist; but if they exist, the areas must be within arange of less than 10 m around the antennas.

l Each forbidden zone should be indicated by a physical barrier and striking sign to warn thepublic or workers.

Laser

CAUTIONWhen handling optical fibers, do not stand close to, or look into the optical fiber outlet withunaided eyes.

Laser transceivers or transmitters are used in the optical transmission system and associated testtools. Because the laser that is transmitted through the optical fiber produces a small beam oflight, it has a very high power density and is invisible to human eyes. If a beam of light entersthe eye, the retina may be damaged.

Normally, staring into the end of an unterminated optical fiber or broken optical fiber with theunaided eyes from a distance of more than 150 mm [5.91 in.] will not cause eye injury. Eyesmay, however, be damaged if an optical tool such as a microscope, magnifying glass or eyeloupe is used to stare into the bare optical fiber end.

Read the following guidelines to prevent laser radiation:

l Only the trained and authorized personnel can perform the operation.

l Wear a pair of eye-protective glasses when you are handling lasers or optical fibers.

l Ensure that the optical source is switched off before disconnecting optical fiber connectors.

l Never look into the end of an exposed optical fiber or an open connector if you cannotensure that the optical source is switched off.

l To ensure that the optical source is switched off, use an optical power meter.

l Before opening the front door of an optical transmission system, ensure that you are notexposed to laser radiation.

l Never use an optical tool such as a microscope, a magnifying glass, or an eye loupe to lookinto the optical fiber connector or end.

Read the following instructions before handling optical fibers:

l Only the trained personnel can cut and splice optical fibers.

l Before cutting or splicing an optical fiber, ensure that the optical fiber is disconnected fromthe optical source. After disconnecting the optical fiber, use protecting caps to protect allthe optical connectors.



Issue 01 (2008-03-20)

1.6 Working at Heights

CAUTIONWhen working at heights, ensure that the objects do not fall.

When working at heights, ensure that the following requirements must be met:

l The personnel who work at heights must be trained.

l The operating machines and tools should be carried and handled safely to prevent themfrom falling.

l Safety measures, such as wearing a helmet and a safety belt, should be taken.

l In cold regions, warm clothes should be worn before working at heights.

l Ensure that the lifting appliances are well prepared for working at heights.

Lifting Weights

CAUTIONDo not access the areas under the arm of the crane and the goods in suspension when liftingweights.

l Ensure that the operators have been trained and qualified.

l Check the weight lifting tools and ensure that they are intact.

l Lift the weight only when the weight lifting tools are firmly mounted onto the weight-bearing object or the wall.

l Use a concise instruction to prevent incorrect operation.

l The angle between the two cables should be less than or equal to 90o in the lifting of weights(See Figure 1-2).



1-9

Figure 1-2 Lifting a weight

Safety Guide on Ladder UseChecking the Ladder

l Check the ladder before using it. Check the maximum weight that the ladder can support.

l Never overload the ladder.

Placing the Ladder

l The slant angle is preferred to be 75o. The slant can be measured with the angle square orwith arms, as shown in Figure 1-3. When using a ladder, place the wider end of the ladderon the ground and take protective measures on the base of the ladder against slippage. Placethe ladder on a stable ground.

When climbing the ladder, ensure the following:

l The gravity of the body does not shift from the edge of the ladder.

l Keep balance on the ladder before performing any operation.

l Do not climb higher than the fourth highest step of the ladder.

If you tend to climb to the roof, the length of the ladder should be at least one meter higher thanthe eave, as shown in Figure 1-4.



Issue 01 (2008-03-20)

Figure 1-3 Slant angle

Figure 1-4 One meter higher than the eave

1.7 Mechanical Safety

Drilling

CAUTIONDo not drill on the cabinet without permission. Inappropriate drilling on the cabinet may damagethe electromagnetic shielding and internal cables. Metal shavings from the drilling may resultin a short-circuit of the circuit board if they get into the cabinet.

l Before drilling a hole on the cabinet, remove the cables from the cabinet.



1-11

l During the drilling, wear blinkers to protect your eyes.

l During the drilling, wear the protective gloves.

l Prevent the metal shavings from getting into the cabinet. After drilling, clean the metalshavings in time.

Handling Sharp Objects

CAUTIONWhen carrying the device by hand, wear the protective gloves to prevent injury by sharp objects.

Handling Fansl When replacing a component, place the component, screw, and tool at a safe place to prevent

them from falling into the running fan.l When replacing the ambient equipment around the fan, do not place the finger or board

into the running fan until the fan is switched off and stops running.

Moving Heavy ObjectsWear the protective gloves when moving heavy objects.

CAUTIONl Be careful when moving heavy objects.

l When moving the chassis outwards, be aware about the unfixed or heavy objects on thechassis to prevent injury.

l Two persons should be available to move a chassis; one person must not move a heavychassis. When moving a chassis, keep your back straight and move stably to prevent asprain.

l When moving or lifting a chassis, hold the handle or bottom of the chassis. Do not hold thehandle of the installed modules in the chassis, such as the power module, fan module, orboard.

1.8 Others

Inserting and Removing a Board

CAUTIONWhen inserting a board, wear the ESD wrist strap or gloves. Insert the board gently to preventany bent pins on the backplane.



Issue 01 (2008-03-20)

l Insert the board along the guide rail.

l Avoid contact of one board with another to prevent short-circuit or damage.

l Do not remove the active board before powering off.

l When holding a board in hand, do not touch the board circuit, components, connectors, orconnection slots.

Bundling Signal Cables

CAUTIONBundle the signal cables separately from the strong current cables or high voltage cables.

Cabling RequirementsAt a very low temperature, movement of the cable may damage the plastic skin of the cable. Toensure the construction safety, comply with the following requirements:

l When installing cables, ensure that the environment temperature is above 0oC.

l If cables are stored in the place below 0oC, move the cables into a place at a roomtemperature and store the cables for more than 24 hours before installation.

l Move the cables with care, especially at a low temperature. Do not drop the cables directlyfrom the vehicle.



1-13

2 N68E-22 Cabinet Overview

The N68E-22 cabinet features a modular design. It provides ample space for installing devicessuch as subracks, servers, and LAN switches so as to facilitate capacity expansion andmaintenance.

Appearance of the N68E-22 CabinetThe color of the N68E-22 cabinet surface is purple and gray. The N68E-22 cabinet can becategorized into two types: the single-door cabinet and the double-door cabinet. Figure 2-1shows the single-door N68E-22 cabinet. Figure 2-2 shows the double-door N68E-22 cabinet.

N68E-22 Cabinet Installation Guide 2 N68E-22 Cabinet Overview


2-1

Figure 2-1 Appearance of the single-door N68E-22 cabinet

2 N68E-22 Cabinet Overview N68E-22 Cabinet Installation Guide


Issue 01 (2008-03-20)

Figure 2-2 Appearance of the double-door N68E-22 cabinet

Technical Specifications for the N68E-22 CabinetTable 2-1 describes all technical specifications for the N68E-22 cabinet.

Table 2-1 Technical specifications for the N68E-22 cabinet

Measurement Item Specification

Dimensions (H x W x D) 2,200 mm (H) x 600 mm (W) x 800 mm (D)

Available space height 46 U

Weight Rack: ≤ 59 kg; Empty cabinet: ≤ 100 kg;Cabinet in full configuration: ≤ 350 kg

Power supply Four -48 V DC inputs

N68E-22 Cabinet Installation Guide 2 N68E-22 Cabinet Overview


2-3

Measurement Item Specification

EMC l ETSI EN300 386

l Council directive 89/336/EEC

2 N68E-22 Cabinet Overview N68E-22 Cabinet Installation Guide


Issue 01 (2008-03-20)

3 Preparing for the N68E-22 CabinetInstallation

About This Chapter

Before the installation, you need to unpack the N68E-22 cabinet. Ensure that all tools requiredfor installing the N68E-22 cabinet are ready.

3.1 Unpacking the RNCWhen the packing cases that contain the RNC cabinets and components are delivered to the site,unpack the cases and check the equipment quality so as to facilitate the smooth installation.

3.2 Preparing Tools for N68E-22 Cabinet InstallationThe tools required for the N68E-22 cabinet installation are: measuring tools, marking tools,drilling tools, fastening tools, pliers, auxiliary tools, meters, and some special tools.

N68E-22 Cabinet Installation Guide 3 Preparing for the N68E-22 Cabinet Installation


3-1

3.1 Unpacking the RNCWhen the packing cases that contain the RNC cabinets and components are delivered to the site,unpack the cases and check the equipment quality so as to facilitate the smooth installation.

Prerequisitel Site preparation for the RNC installation is complete.

l The packing cases that contain the cabinets and components are ready on site.

Context

CAUTIONElectronic devices such as boards and Application Specific Integrated Circuit (ASIC) are ESD-prone. When operate with these devices, correctly put on an ESD wrist strap. Ensure that theESD wrist strap is properly connected to the ESD connector on the cabinet. If neither the ESDwrist strap nor an appropriate PGND point is provided, wear the ESD gloves.

l When moving the equipment, prevent the equipment from colliding with objects such asdoors, walls, or shelves.

l Do not touch the unpainted metal surface of the equipment or its components with sweat-soaked or dirty gloves.

Procedure

Step 1 Unload the packing cases.

CAUTIONArrange the packing cases in sequence and the labels in the same direction to facilitate the check.

Step 2 When unloading the equipment, check whether the quantity of the packing cases on the sitematches with the Packing List. Ensure that the place of delivery is the correct installation place.

If... Then...

The quantity of the packing cases on site matches with the Packing List. Go to Step 4.

The quantity of the packing cases on site does not match with the PackingList.

Go to Step 3.

3 Preparing for the N68E-22 Cabinet Installation N68E-22 Cabinet Installation Guide


Issue 01 (2008-03-20)

Step 3 In case of any error, the installation supervisor must stop the unpacking immediately and sendthe Article Problem Feedback Form to the order management engineer in the local Huawei officewithin three days. Note that this form must be signed by the customer.

Step 4 Check whether the packing cases are intact and the equipment is placed upright in transit.

If... Then...

Any packing case is damaged or soaked. Go to Step 5.

The packing cases are intact. Go to Step 6.

Step 5 Stop the unpacking immediately, make investigations to find the cause, and contact the ordermanagement engineer in the local Huawei office for further treatment.

CAUTIONTo protect the equipment and find out the causes, perform the following steps: Move theunpacked equipment indoor for proper storage, take photos of the storage environment and ofthe rusted or corroded equipment, packing cases, and packing materials. Keep these photos forlater verification. Store the packing cases and materials in a proper place.

Step 6 Unpack the wooden cases.

CAUTIONl Before the unpacking, move the wooden cases into or close to the equipment room if there

is enough space. This prevents damage to the cabinets in transit.l You can find articles rapidly according to the names, codes, locations, and quantities of the

articles on the Packing List.l Here shows an example of a wooden case that contains the cabinet. The methods for

unpacking other types of wooden cases are similar.

1. Place the wooden case on the ground. Ensure that the side with the wooden frame faces thebottom.

2. Use a wrench, a straight screwdriver, or a claw hammer to straighten the tongue.Refer to Figure 3-1.



3-3

Figure 3-1 Straightening the tongue

3. Remove the cover. If the wooden case contains a carton, take out the carton and then openit according to Step 7. If the wooden case contains a cabinet, go to the next step. Refer toFigure 3-2.



Issue 01 (2008-03-20)

Figure 3-2 Removing the cover from the case

4. Remove the side boards of the wooden case in the same way as described previously. Referto Figure 3-3.



3-5

Figure 3-3 Removing the side boards

5. Erect the cabinet with the BOTTOM side down.

CAUTIONIf the cabinet falls during the erection, it may cause personnel injury. Therefore, thisoperation requires three to five installers to work together.

6. Remove the base of the case, that is, the side with the wooden frame.7. Remove the foamed wrap angles.8. Remove the vacuum plastic bag.

Step 7 Unpack the carton, as shown in Figure 3-4.



Issue 01 (2008-03-20)

Figure 3-4 Unpacking a carton

(1) Carton label (2) Strap (3) Pressure-sensitive adhesive tape(4) Foam block (5) Board label (6) Board

1. Check the types and quantities of the articles in the carton according to the label on thecarton.

2. Cut the straps using the diagonal pliers.3. Rip the adhesive tape along the joint seams using the paper knife. Do not insert the knife

too deep, otherwise the articles may be damaged.4. Unpack the carton and take out the articles.

Step 8 Unpack boards.

CAUTIONl Electronic components are extremely sensitive to static electricity. Therefore, properly wear

an ESD wrist strap or glove when unpacking the boards.l The ESD bag contains the desiccant to keep the bag dry. When taking the board from a cold

dry place to a hot damp place, wait at least 30 minutes before unpacking the board. Otherwise,moisture condensed on the board surface may damage the board.

1. Check that there is no evident damage on the board packages.2. Open the packages and check that the boards are in good condition. For any problem,

contact the order management engineer at the local Huawei office.

Step 9 Check whether the unpacked boards need to be installed immediately, and proceed accordingly.

If... Then...

The board needs to be installedimmediately.

Place the board on an ESD surface anddischarge the static electricity.

The board does not need to be installedimmediately.

Pack the board with the original materials andplace them at a cool dry place away from directsunlight or strong electromagnetic radiation.

Step 10 Check the articles one by one according to the name, type, and quantity of each article stated onthe Packing List.



3-7

The checking of the articles covers the following aspects:l Appearance: Check that there are no defects on the appearance of the cabinet; there is no

looseness, distortion, or damage; the identification is legible; all nameplates and decoratingplates are available and meet the requirements.

l Integrity: Check that all the parts and accessories required for the installation of cabinets areavailable.

l Computer terminal: Check that the monitor, keyboard, and mouse are all available and ingood condition.

l Boards: Check that the type and quantity of the boards are consistent with the Packing List;no printed circuit board is broken; no component is detached from the board.

NOTE

The installation supervisor should be responsible for the inspection of the electrically sensitive equipmentand components.

If... Then...

The item saying "Outstanding articles" isstated on the Packing List.

The installation supervisor informs the ordermanagement engineer at the local Huaweioffice for further treatment. At the same time,both parties sign the Packing List.

There is any absent, wrong, or extrashipment, or any damaged articles.

Note the following points: Representatives ofHuawei and the customer both sign theUnpacking Inspection Memo and PackingList. The installation supervisor must fill in theArticle Problem Feedback Form and sends itback to the order management engineer at thelocal office within three days. The installationsupervisor must keep the problematic articlestogether with the inner and outer packing intactfor future investigation and verification.

All the products are intact. Place the inspected articles by the type. Then,both parties sign the Packing List.

----End

3.2 Preparing Tools for N68E-22 Cabinet InstallationThe tools required for the N68E-22 cabinet installation are: measuring tools, marking tools,drilling tools, fastening tools, pliers, auxiliary tools, meters, and some special tools.

General ToolsThe general tools required for the N68E-22 cabinet installation are listed in Table 3-1.



Issue 01 (2008-03-20)

Table 3-1 General tools required for N68E-22 cabinet installation

Types Tools

Measurementtools

Long tape, 50 m ribbon tape, 5 m measuring tape, 400 mm level bar, andlevel instrument

Marking tools Marking pen, pencil

Drilling tools Percussion drill with matching bits of Ф6, Ф8, Ф10, Ф12, Ф14, and Ф16,and vacuum cleaner

Fastening tools Straight screwdrivers (M3 to M6)Cross screwdrivers (M3 to M6)Adjustable wrenchSocket wrenches (M6, M8, M10, M12, M14, M17, M19)Double offset ring wrenches (M6, M8, M10, M12, M14, M17, M19)Combination wrenches (M17 and M19)Long-arm wrench

Pliers Sharp nose pliers, diagonal pliers, pincer pliers, electric hand drill, file,hacksaw, crowbar, rubber hammer, and nail hammer

Auxiliary tools Paper knife, bellows, plumb, fork, ladder, heat blower, and insulating tape

Special ToolsThe special tools required for the N68E-22 cabinet installation are: Earth resistance meter, ESDwrist strap, ESD glove, cable peeler, clamping pliers, safety knife, multi-purpose crimping pliers.

MetersThe meters required for the N68E-22 cabinet installation are: multimeter, 500 V megohm meter(for testing insulation resistance).

NOTE

The meters must be checked and certified.



3-9

4 Installing the N68E-22 Cabinet

The N68E-22 cabinet installation involves installing the cabinet, accessories, external powercables, and PGND cables. In addition, you also need to check the power-on status of the cabinet,attach engineering labels to the cabinet, and attach engineering labels to the external powercables and PGND cables.

Prerequisitel The RNC equipment has been unpacked and accepted.

l The equipment is delivered to the site.

l The tools required for the installation are all ready.

Procedure

Step 1 Install the N68E-22 cabinet.

If... Then...

Installing the N68E-22 cabinet on the ESDfloor,

Refer to 6 Installing the N68E-22 Cabinet onthe ESD Floor.

Installing the N68E-22 cabinet on theconcrete floor,

Refer to 5 Installing the N68E-22 Cabinet onthe Concrete Floor.

Installing the N68E-22 cabinet on othertypes of floor,

Contact Huawei engineers for technicalsupport.

Step 2 Install power cables and PGND cables for the N68E-22 cabinet. Refer to 7 Installing PowerCables and PGND Cables for the N68E-22 Cabinet.

Step 3 Install accessories for the N68E-22 cabinet. Refer to 8 Installing Accessories for the N68E-22Cabinet.

Step 4 Attach engineering labels to the N68E-22 cabinet. Refer to 9 Labeling RNC Cabinets.

N68E-22 Cabinet Installation Guide 4 Installing the N68E-22 Cabinet


4-1

Step 5 Attach engineering labels to external power cables and PGND cables. Refer to 10 LabelingPower Cables and PGND Cables of the RNC.

----End

4 Installing the N68E-22 Cabinet N68E-22 Cabinet Installation Guide


Issue 01 (2008-03-20)

5 Installing the N68E-22 Cabinet on theConcrete Floor

About This Chapter

This describes how to install the N68E-22 cabinet on the concrete floor.

PrerequisiteThe materials required for installing the N68E-22 cabinet are available, as specified in 5.1Materials for Installing the N68E-22 Cabinet on the Concrete Floor.

1. 5.3 Positioning the N68E-22 Cabinet on the Concrete FloorThe positioning of the N68E-22 cabinet on the concrete floor includes the following steps:determining cabinet positions, marking the positions, drilling holes, and installingexpansion bolt assemblies.

2. 5.4 Securing the N68E-22 Cabinet on the Concrete FloorThis describes how to secure the N68E-22 cabinet on the concrete floor.

3. 5.5 Testing the Insulation of the N68E-22 CabinetThis describes how to test the insulation of the N68E-22 cabinet to ensure that the cabinetis insulated from the ground.

4. 5.6 Combining N68E-22 CabinetsThis describes how to use connecting plates to install two or more cabinets side by side.

N68E-22 Cabinet Installation Guide 5 Installing the N68E-22 Cabinet on the Concrete Floor


5-1

5.1 Materials for Installing the N68E-22 Cabinet on theConcrete Floor

For the installation of the N68E-22 cabinet on the concrete floor, you need only the N68E-22cabinet, and the quantity depends on the actual site plan.

5.2 Template Files for Installing the N68E-22 CabinetThe template files for installing the N68E-22 cabinet consist of the equipment room floor planand the marking template. The equipment room floor plan is used to determine the installationposition of the N68E-22 cabinet in the equipment room. The marking template is used todetermine the drilling positions. The equipment room floor plan can be used both when theN68E-22 cabinet is installed on the concrete floor and when the N68E-22 cabinet is installed onthe ESD floor, but the marking template varies with the installation position.

Equipment Room LayoutThe Equipment Room Layout is provided by the customer or the site survey personnel. Figure5-1 is an example of the Equipment Room Layout.

5 Installing the N68E-22 Cabinet on the Concrete Floor N68E-22 Cabinet Installation Guide


Issue 01 (2008-03-20)

Figure 5-1 Equipment room layout (unit: mm)

NOTE

See Figure 5-1. The requirements for the installation position of the N68E-22 cabinet are as follows:

l The horizontal distance between two rows of cabinets should be at least 1,000 mm.

l The distance between the wall and the side of cabinet that is the closest to the wall is at least 800mm.

l The distance between the wall and the front/back of cabinet that is the closest to the wall is at least800 mm for double-door N68E-22 cabinet, and it is at least 1,000 mm for single-door N68E-22cabinet.

l The width of the passages in the equipment room is at least 1,000 mm.

Marking TemplateThe marking template is delivered with the cabinet. The marking template for installing theN68E-22 cabinet on the concrete floor is different from the marking template for installing theN68E-22 cabinet on the ESD floor. See Figure 5-2 and Figure 5-3.



5-3

Figure 5-2 Marking template for installing the N68E-22 cabinet on the concrete floor (unit: mm)

Figure 5-3 Marking template for installing the N68E-22 cabinet on the ESD floor (unit: mm)

5.3 Positioning the N68E-22 Cabinet on the Concrete FloorThe positioning of the N68E-22 cabinet on the concrete floor includes the following steps:determining cabinet positions, marking the positions, drilling holes, and installing expansionbolt assemblies.

Prerequisitel The parts required for the installation are available. The required parts are the M12x60

expansion bolt assemblies.

l The materials required for the installation are available. The required materials are themarking template and Equipment Room Layout.

l The tools required for the installation are available. The required tools are tape measure,marking pen, percussion drill with the Ф16 drill bit, vacuum cleaner, and hammer (such asclaw hammer).

Contextl Marking cabinet positions and drilling holes are the primary tasks of installation. Therefore,

the accuracy of these tasks should be ensured; otherwise, the following tasks will incurgreat inconvenience.



Issue 01 (2008-03-20)

l Before marking cabinet positions and drilling holes, check the installation position of theequipment, such as cable racks, in the equipment room for easy cabling.

l The Equipment Room Layout is provided by the customer or the site survey personnel.

Procedure

Step 1 Check that the Equipment Room Layout is in accordance with the requirements for installing theN68E-22 cabinet by referring to 5.2 Template Files for Installing the N68E-22 Cabinet.

Step 2 Use a tape measure to determine the cabinet positions based on the dimensions specified in theEquipment Room Layout.

Step 3 Determine the positions of the holes for the expansion bolt assemblies on the concrete floorbased on the installation position of the cabinet.You can use the marking template or tape measure to determine the positions of the holes forthe expansion bolt assemblies on the concrete floor. The marking template is made of paper andis prone to deformation. Before using the marking template, check whether it is deformed basedon the dimensions of marking template specified in 5.2 Template Files for Installing theN68E-22 Cabinet.

If... Then...

The marking template is one of theaccessories delivered on site and is notdeformed,

Use the marking plate to determine thepositions of the holes for the expansion boltassemblies and then go to Step 4.

Other, Use the tape measure to determine thepositions of the holes for the expansion boltassemblies and then go to Step 5.

Step 4 Use the marking plate to determine the positions of the holes for the expansion bolt assemblies.

1. As shown in Figure 5-4 or Figure 5-5, use measuring and marking instruments to measureand mark the start points for the front of a row of cabinets. From each start point, mark thebenchmark lines in the cabinet arrangement direction.

2. Place the marking template on the floor. Ensure that the semicircle notch of the templateindicates the front of the cabinet and the edges of the template align with the benchmarklines.

3. Mark the positions of the holes (four holes for each cabinet) for expansion bolts on the floorby using the template.

4. After all the hole positions are marked, measure the holes again to ensure that thedimensions of the holes are correct.

5. Go to Step 6.

Step 5 If the marking template cannot be used on site, use the tape measure to determine the positionsof the holes for the expansion bolt assemblies.

1. As shown in Figure 5-4 or Figure 5-5, use measuring and marking instruments to measureand mark two straight lines with 687 mm wide spacing, and ensure that the lines are parallelwith the front of the cabinet.



5-5

Figure 5-4 Mounting holes for one cabinet (unit: mm)

Figure 5-5 Mounting holes for a row of cabinets (unit: mm)

2. As shown in Figure 5-4 or Figure 5-5, determine the position of hole for the first expansionbolt assembly on each of the straight lines. Taking the hole as the benchmark point, markthe mounting holes for other expansion bolt assemblies in succession.

3. After all the hole positions are marked, measure the holes again to ensure that thedimensions of the holes are correct.

Step 6 Drill the holes.



Issue 01 (2008-03-20)

CAUTIONl The concrete floor should not be penetrated. Therefore, you should confirm the thickness of

the concrete floor before the drilling. For some types of concrete floors on which the drillingis not suitable, you should consult the architectural engineers and get their permission beforedrilling holes.

l Before drilling holes, you should take dustproof measures on the electronic equipment in theequipment room. While drilling holes, you should clean the dust with a vacuum cleaner.Before removing the dustproof cover from the electronic equipment, you should clean thepieces of concrete which accumulate during the drilling.

l You must wear safety goggles during the drilling to protect your eyes from the harm of dust.

l While drilling holes, you must hold the drill stock firmly. You must keep the drilling bitvertical to the floor lest the floor be damaged or the holes be slanting.

1. Dig a pit by using a chisel to help hold the drill bit to the floor, as shown in Figure 5-6.

Figure 5-6 Digging a pit

2. Use a percussion drill to drill holes at the marked places on the concrete floor. The depthof each hole must range from 52 mm to 60 mm. All the holes must have the same depth.Select a Ф16 drill bit in appropriate length. See Figure 5-7.

Figure 5-7 Drilling a hole



5-7

3. Check that the depth of each hole ranges from 52 mm to 60 mm and that the holes are notslanting. If the depth of the hole is not appropriate or if the hole is slanting, re-drill the hole.If the slanting hole cannot be corrected, discard the hole.

4. Clean the dust inside and outside the holes by using a vacuum cleaner.

Step 7 Install the expansion bolt assemblies.Figure 5-8 shows an expansion bolt assembly.

Figure 5-8 Expansion bolt assembly

(1) Bolt (2) Spring washer (3) Flat washer (4) Expansion tube

(5) Nut (6) Guiding slot (7) Guiding rib

1. Measure the distance between the holes. If the distance does not meet the specifications,reposition and drill new holes.

2. Insert the guiding rib on the nut into the guiding slot on the expansion tube and then screwthe bolt slightly to ensure that the guiding rib does not move out from the guiding slot. SeeFigure 5-9 ①.

3. Insert the expansion tube and the nut into the hole vertically, and then use a rubber hammerto strike the expansion tube until it is completely buried in the hole, as shown in Figure5-9 ②.

Figure 5-9 Installing expansion bolt assembly (1)

4. Pretighten the expansion bolt clockwise so that the nut and the expansion tube do not getloose easily. See Figure 5-10 ①.



Issue 01 (2008-03-20)

5. Screw off the expansion bolt counterclockwise and then remove the spring washer and flatwasher. Keep them for future use. See Figure 5-10 ②.

Figure 5-10 Installing expansion bolt assembly (2)

----End

5.4 Securing the N68E-22 Cabinet on the Concrete FloorThis describes how to secure the N68E-22 cabinet on the concrete floor.

Prerequisitel The equipment to be installed is available. The equipment to be installed is the N68E-22

cabinet.l The materials required for the installation are available. The required materials are

insulating pads, flat washers 12, spring washers 12, adjusting pads (optional), and M12x60expansion bolt assemblies.

l The tools required for the installation are available. The required tools are the forklift, levelbar, torque wrench, socket wrench, and cross screwdriver.

Context

CAUTIONThe gravity center of the N68E-22 cabinet is high, so you must not lift or push the cabinet alone.To avoid personal injury or the damage to the cabinet, you must ensure that you have at leastone assistant and that you can use the forklift appropriately before moving the cabinet.

ProcedureStep 1 Remove the wooden protection boards from the front and the rear of the cabinet.

Step 2 Remove the four wooden protection boards from both the left and right parts of the rack. Pulldown the hook pin at the upper part of both the front and rear doors of the cabinet, and thenremove both doors. Lay the doors appropriately. See Figure 5-11.



5-9

Figure 5-11 Removing the packing accessory

NOTE

When laying the doors, you should ensure that the lock of each door is unlocked. Therefore, the lock rodat the lower part of each door does not protrude and is not deformed because of pressure. See Figure5-12.

Figure 5-12 State of the lock of each door

Step 3 Remove the two short supporting beams on the left and right of the cabinet front. Figure 5-13shows how to remove the short supporting beam.



Issue 01 (2008-03-20)

Figure 5-13 Removing the short supporting beam

Step 4 Screw off the two M6x12 screws from the air filter, as shown in Figure 5-14 ①. Remove theair filter, as shown in Figure 5-14 ②.



5-11

Figure 5-14 Removing the air filter

Step 5 Place the cabinet in the specified position. Align the mounting holes in the cabinet with the holeson the floor.

Step 6 Add the spring washer, flat washer, and insulating tube to each of the four expansion bolts. Then,insert each expansion bolt into the expansion tube and pretighten the expansion tube and the nut.See Figure 5-15.

Step 7 Below the cabinet, push two insulating plates from both the front and rear sides. Ensure that thenotch faces the inner side and is wedged in the expansion bolt. Align the mounting holes of eachinsulating plate with the corresponding expansion bolt holes. See Figure 5-15.



Issue 01 (2008-03-20)

Figure 5-15 Securing the cabinet

(1) M12x60 bolt (2) Washer 12 (3) Flat washer(4) Insulating tube (5) Insulating plate

Step 8 Level the cabinet. Use the level bar to check the levelness of the cabinet. If the cabinet is notlevel, use the socket wrench to adjust the leveling foot (adjustable range: 0-10 mm) of the cabinetand ensure that the cabinet is level. See Figure 5-16.

Figure 5-16 Leveling the cabinet

(1) Leveling foot (2) Fixing bolt

Step 9 After the cabinet is level, use the torque wrench to fix the four fixing bolts and tighten them to45 N·m.

----End



5-13

5.5 Testing the Insulation of the N68E-22 CabinetThis describes how to test the insulation of the N68E-22 cabinet to ensure that the cabinet isinsulated from the ground.

PrerequisiteThe multimeter required for the insulation test is available.

Procedure

Step 1 Set the multimeter to the megohm position.

Step 2 Measure the resistance between the M12x60 expansion bolt and the cabinet.

If... Then...

The resistance is equal to or greater than fivemegohms,

Go to Step 7.

The resistance is smaller than five megohms, You can infer that the cabinet is not insulatedfrom the ground and then go to Step 3.



Issue 01 (2008-03-20)

Figure 5-17 Insulation test

Step 3 Remove all the installation parts between the N68E-22 cabinet and the ground.

Step 4 Check that the insulation parts are not missing or damaged.

Step 5 Fix the cabinet again.

Step 6 Go back to Step 1 to test the insulation again.

Step 7 Use two M6x12 screws to fix the air filter and ensure that it is in the original position. See Figure5-18.



5-15

Figure 5-18 Repositioning the air filter

----End

5.6 Combining N68E-22 CabinetsThis describes how to use connecting plates to install two or more cabinets side by side.

PrerequisiteThe required tools such as wrench and climbing ladder are available.

ContextThe connecting plates are installed on top of and are delivered with the cabinets.

Procedure

Step 1 Remove the connecting plates from the column inside the cabinet, rotate each of them by 180degrees, and then reinstall them. Use M8x30 bolts to connect the connecting plates of the adjacentcabinets together. See Figure 5-19 ①.



Issue 01 (2008-03-20)

Figure 5-19 Connecting the connecting plates

Step 2 Remove the two connecting plates from the front and rear doorheads of the adjacent cabinets.Then, reinstall the connecting plates, as shown in Figure 5-19 ②.

Step 3 At the bottom of the combined cabinets and in front of the column, use a level bar to checkwhether the levelness and vertical deviation of the row of cabinets meet the specifications, asshown in Figure 5-20. If the cabinet is not level, use a socket wrench to adjust the leveling foot.



5-17

Figure 5-20 Using a level bar to check the levelness

----End



Issue 01 (2008-03-20)

6 Installing the N68E-22 Cabinet on the ESDFloor

About This Chapter

This describes how to install the N68E-22 cabinet on the ESD floor. In the equipment room withESD floor, you need to install the N68E-22 cabinet on the N6X series supports.

PrerequisiteThe materials required for the installation are available. For details, refer to 6.1 Materials forInstalling the N68E-22 Cabinet on the ESD Floor.

1. 6.4 Positioning the N68E-22 Cabinet on the ESD FloorThis describes how to position the N68E-22 cabinet on the ESD floor, including positioningthe cabinet, drawing lines, drilling holes, and installing expansion bolt assembly.

2. 6.5 Assembling the Support and the Guide RailThis describes how to assemble the N6X series supports and guide rails, and how to fixthem on the concrete floor.

3. 6.6 Fixing the N68E-22 Cabinet on the ESD FloorThis describes how to fix the N68E-22 cabinet on the ESD floor. The front and rear doorsof the cabinet are installed before delivery. You need to remove the front and rear doors,and then fix the N68E-22 cabinet on the N6X series supports.

4. 6.7 Testing the Insulation of the N68E-22 CabinetThis describes how to test the insulation of the N68E-22 cabinet to ensure that the cabinetis insulated from the ground.

5. 6.8 Combining N68E-22 CabinetsThis describes how to use connecting plates to install two or more cabinets side by side.

6. 6.9 Restoring the ESD FloorThis describe how to restore the ESD floor. After the N68E-22 cabinet is installed on theESD floor, you need to install the horizontal pallet and restore the ESD floor around thecabinet.

N68E-22 Cabinet Installation Guide 6 Installing the N68E-22 Cabinet on the ESD Floor


6-1

6.1 Materials for Installing the N68E-22 Cabinet on the ESDFloor

The materials for installing the N68E-22 cabinet on the ESD floor are N68E-22 cabinet and N6Xseries support assembly.

Table 6-1 lists the materials required for the installation.

Table 6-1 Materials required for the installation

Name Type Quantity

N68E-22 cabinet - Determined based on therequirements on site

N6X series support assembly Support 2 x Number of the cabinets

Guide rail 2 x Number of the cabinets

Horizontal pallet 2 x Number of the cabinets

6.2 Template Files for Installing the N68E-22 CabinetThe template files for installing the N68E-22 cabinet consist of the equipment room floor planand the marking template. The equipment room floor plan is used to determine the installationposition of the N68E-22 cabinet in the equipment room. The marking template is used todetermine the drilling positions. The equipment room floor plan can be used both when theN68E-22 cabinet is installed on the concrete floor and when the N68E-22 cabinet is installed onthe ESD floor, but the marking template varies with the installation position.

Equipment Room LayoutThe Equipment Room Layout is provided by the customer or the site survey personnel. Figure6-1 is an example of the Equipment Room Layout.

6 Installing the N68E-22 Cabinet on the ESD Floor N68E-22 Cabinet Installation Guide


Issue 01 (2008-03-20)

Figure 6-1 Equipment room layout (unit: mm)

NOTE

See Figure 6-1. The requirements for the installation position of the N68E-22 cabinet are as follows:

l The horizontal distance between two rows of cabinets should be at least 1,000 mm.

l The distance between the wall and the side of cabinet that is the closest to the wall is at least 800mm.

l The distance between the wall and the front/back of cabinet that is the closest to the wall is at least800 mm for double-door N68E-22 cabinet, and it is at least 1,000 mm for single-door N68E-22cabinet.

l The width of the passages in the equipment room is at least 1,000 mm.

Marking TemplateThe marking template is delivered with the cabinet. The marking template for installing theN68E-22 cabinet on the concrete floor is different from the marking template for installing theN68E-22 cabinet on the ESD floor. See Figure 6-2 and Figure 6-3.



6-3

Figure 6-2 Marking template for installing the N68E-22 cabinet on the concrete floor (unit: mm)

Figure 6-3 Marking template for installing the N68E-22 cabinet on the ESD floor (unit: mm)

6.3 N6X Series Support AssemblyThe N6X series support assembly consists of the N6X series supports, guide rail, and horizontalpallet. The cabinet, guide rail, and supports are fixed by bolts, and the ESD floor is supportedby the horizontal pallet.

N6X Series SupportsSupports are used to lift the cabinet for the convenience of cabling. Figure 6-4 shows the N6Xseries supports.



Issue 01 (2008-03-20)

Figure 6-4 N6X series supports

(1) Half support (2) Expansion lever (3) M8 screw assembly

(4) Connection holes for the supportand the guide rail

(5) Connection holes for the supportand the horizontal pallet

(6) Height mark of the ESD floor

(7) Height locking bolt (8) Installation hole to the ground

The N6X series supports are adjustable. You can adjust the length of the expansion lever byadjusting the M8 screw assembly and the supports.

The N6X series supports feature two models. One model has a fixed height and the other hasadjustable heights. Table 6-2 lists applicable height range of each support type.

Table 6-2 Applicable height range of each support type

Type Applicable Height of the ESDFloor

Remarks

I Support withadjustableheights

296 mm to 465 mm l The supports can be adjusted toany height within the range.

l The height of the ESD floor is thedistance between the uppersurface of the ESD floor and theconcrete floor.

II Support withfix height

Customized based on the height ofthe ESD floor.

The supports are suitable forextremely high or low applications.The lowest applicable floor heightis 100 mm.

Guide railThe guide rail connects the cabinet and the support. Figure 6-5 shows the guide rail.



6-5

Figure 6-5 Guide rail

(1) Connection holes for the cabinet (2) Connection holes for the support

Horizontal PalletThe horizontal pallet supports the floor in front of and at the rear of the cabinet. Figure 6-6shows the horizontal pallet.

Figure 6-6 Horizontal pallet

(1) Connection holes for the support

6.4 Positioning the N68E-22 Cabinet on the ESD FloorThis describes how to position the N68E-22 cabinet on the ESD floor, including positioning thecabinet, drawing lines, drilling holes, and installing expansion bolt assembly.

Prerequisitel The materials required for the installation are available. They are the M12x60 expansion

bolt assemblies.l The materials required for the installation are available. They are the line drawing template

and the Equipment Room Layout.l The tools required for the installation are available. They are a tape, panel lifter, electric

saw, ink fountain, marking pen, percussion drill (with φ16 drill bits), cleaner, safetygoggles, dustproof coverings for electronic equipment, and rubber hammer.

Procedure

Step 1 Check and ensure that the Equipment Room Layout can meet the requirements for installing theN68E-22 cabinet by referring to 6.2 Template Files for Installing the N68E-22 Cabinet.

Step 2 According to the dimensions specified in the Equipment Room Layout, use the tape to measureand determine the position of the cabinet.



Issue 01 (2008-03-20)

Step 3 Remove the ESD floor in the installation area by using a panel lifter.

Step 4 Remove the supporting pieces of the ESD floor.

Step 5 Clean the installation area.

Step 6 Determine the method for locating the holes for the expansion bolt assemblies on the concretefloor.You can locate the holes using the line drawing template or the tape. Before using the linedrawing template, you need to check whether it is intact by measuring the dimensions of thepaper line drawing template. For details, refer to 6.2 Template Files for Installing the N68E-22Cabinet.

If ... Then ...

The line drawing template is shipped withthe product and is intact,

Locate the holes for the expansion boltassemblies using the line drawing template. Goto Step 7.

Other, Locate the holes for the expansion boltassemblies using the tape. Go to Step 8.

Step 7 Locate the holes for the expansion bolt assemblies using the line drawing template.1. Based on Figure 6-7 or Figure 6-8, measure and draw several marking points using

measuring and marking tools, and then draw the base lines.2. Place the line drawing template on the floor. Ensure that the half-circle gap on the template

indicates the face of the cabinet, and that the border line are in alignment with the base line.3. Mark the positions for expansion bolts on the floor using the template. Mark four bolt

positions for each cabinet.4. Measure the hole location line carefully, and ensure that the dimensions are accurate.5. Go to Step 9.

Step 8 Locate the holes for the expansion bolt assemblies using the tape.1. Based on Figure 6-7 and Figure 6-8, draw two straight lines by using the measuring and

marking tools. The two lines must be parallel to the front of the cabinet, and the spacingbetween them must be 704 mm.

Figure 6-7 Installation holes for one cabinet (unit: mm)



6-7

Figure 6-8 Installation holes for a row of cabinets (unit: mm)

2. Based on Figure 6-7 or Figure 6-8, determine the position of the first expansion boltassembly on the lines as datum marks, and then mark positions of the other ones.

3. Measure the hole location line carefully, and ensure that the dimensions are accurate.

Step 9 Drill holes.

CAUTIONl Check the thickness of the concrete floor, and ensure that the drill bit does not penetrate

through the concrete floor. Before drilling holes in some concrete floors, you must consultthe architect.

l Before drilling holes, protect the electronics by using the dust-proof cover. When drillingholes, use a vacuum cleaner to clear the dust. Clear the dust before removing the dust-proofcover.

l When drilling holes, wear safety goggles to protect your eyes.

l Keep the drilling bit vertical to the ground and hold the drill stock tightly to drill holes.

1. Use a chisel to dig a pit before drilling, as shown in Figure 6-9.

Figure 6-9 Digging a pit before drilling

2. Mark the positions of the expansion bolts on the concrete floor using a chisel. Ensure thatthe hole depth are the same, ranging from 52 mm to 60 mm, as shown in Figure 6-10.



Issue 01 (2008-03-20)

Figure 6-10 Drilling holes

3. Ensure that the depth of the holes is within the range of 52 mm to 60 mm and the holes arevertical. If the depth of the hole is not appropriate or if the hole is lopsided, re-drill the hole.

4. Use a vacuum cleaner to clear the dust inside and around the holes.

Step 10 Install the expansion bolt assemblies.Figure 6-11 shows the expansion bolt assembly.

Figure 6-11 Expansion bolt assembly

(1) Bolt (2) Spring washer (3) Flat washer (4) Expansion tube

(5) Expansion nut (6) Guiding slot (7) Guiding rib

1. Use a vacuum cleaner to clear the dust inside and around the holes. Measure the spacingbetween holes. If the spacing between holes is not proper, reposition the hole and re-drillbefore installing the expansion bolt assembly.

2. Put the guiding rib of expansion nut in the guiding slot of the tube, screw the bolt until theguiding slot cannot fall out of the guiding rib, as shown in ① of Figure 6-12.

3. Place the expansion bolt assembly into the hole vertically, and then use the nail hammer todrive the entire expansion tube into the hole, as shown in ② of Figure 6-12.



6-9

Figure 6-12 Installing the expansion bolt assembly (I)

4. Screw the expansion bolts in the clockwise direction. Ensure that the expansion nut andthe expansion tube are tightened, as shown in ① of Figure 6-13.

5. Screw off the expansion bolt in the anti-clockwise direction, remove the spring washer andthe flat washer, and store them properly for later use, as shown in ② of Figure 6-13.

Figure 6-13 Installing the expansion bolt assembly (II)

----End

6.5 Assembling the Support and the Guide RailThis describes how to assemble the N6X series supports and guide rails, and how to fix themon the concrete floor.

Prerequisitel The materials required for the installation are available. They are supports, the guide rail,

M12x35 bolt assembly, and M12x60 bolt assembly.l The materials required for the installation are available. They are spring washers 12, flat

washers 12, and big flat washers.l The tools required for the installation are available. They are a torque wrench and a

horizontal ruler.



Issue 01 (2008-03-20)

Procedure

Step 1 Adjust the height of the support. Adjust the two half supports, and ensure that the end of thesupports are in alignment with the silkscreen 800 on the expansion lever. Then screw the sixM8x20 bolt assembly, as shown in Figure 6-14.

Figure 6-14 Adjusting the height of the support

(1) Half support (2) M8 bolt assembly

(3) Expansion lever (4) Height locking bolt

Step 2 Adjust the height of the support.1. Loosen the height locking bolts. Figure 6-14 shows positions of the height locking bolts.2. Adjust the height of the support. Ensure that the height indicator on the support is on the

same level as the ESD floor.

CAUTIONl The height of the ESD floor is provided in the engineering survey report.

l Ensure that the height silkscreen value of each support is the same as the measurementheight of the ESD floor. Otherwise, in the case of capacity expansion, the heights of thecabinets in the same row might be inconsistent.

3. Fasten the two height locking bolts in the middle, and then the four height locking bolts onboth sides using a torque wrench to 45N·m.



6-11

Step 3 Figure 6-15 shows how to assemble the guide rails.

Figure 6-15 Assembling guide rails

(1) Support (2) Guide rail (3) M12x35 bolt

(4) Spring washer (5) Flat washer

1. Place the guide rail on the support, and then align the installation holes on the guide railwith the that on the support.

2. Assemble the support with guide rails using the M12x35 bolt assembly, spring washers,and flat washers.

3. Adjust the position of the support to ensure that the diagonal lines of the two guide railsare equal in length, with a deviation of 2 mm.

4. Fasten the bolts in a cross way.

Step 4 Adjust and fix the support.

1. Align the installation holes on the support with the holes on the ground, and then place thesupport on the ground.

2. Fit the spring washer and flat washers on the M12x60 bolts, and then insert the bolts throughthe holes on the support into the four holes on the ground vertically, as shown in Figure6-16.



Issue 01 (2008-03-20)

Figure 6-16 Fixing the support

(1) Support (2) Guide rail (3) M12x60 bolt

(4) Spring washer (5) Big flat washer (6) Adjusting pad

(7) Expansion tube (8) Expansion nut (9) Horizontal ruler

3. Place the horizontal ruler on the support to check the levelness. If the support is not level,add adjusting pads until the support is level in both directions.

4. Then fasten the four bolts diagonally to 45 N·m.

Step 5 In combined cabinet installation, install the supports side by side.To facilitate later installation, use insulation plate to help determine distance between twoadjacent supports. Figure 6-17 shows the insulation plate.

Figure 6-17 Insulation plate

(1) Location hole (2) Installation hole

1. Place the insulation plate on the guide rails of two adjacent supports, with the half-circlegaps facing the installation holes on guide rails. Then locate the supports using M12x35bolt assembly, as shown in Figure 6-18. Adjust the distance between adjacent supportsusing the insulation plate by following the same steps.



6-13

Figure 6-18 Installing supports in a row

(1) Insulation plate (2) M12x35 bolt

2. Check the levelness of the supports using a horizontal ruler. If the supports are not level,adjust the supports using adjusting pads, as shown in Figure 6-18.

3. Fasten the height locking bolts using a wretch.

4. Remove the M12x35 bolt assembly and the insulation plates, and store them properly forfixing the cabinet.

----End

6.6 Fixing the N68E-22 Cabinet on the ESD FloorThis describes how to fix the N68E-22 cabinet on the ESD floor. The front and rear doors of thecabinet are installed before delivery. You need to remove the front and rear doors, and then fixthe N68E-22 cabinet on the N6X series supports.

Prerequisitel The materials required for the installation are available. They are the cabinet and M12x35

bolts.

l The materials required for the installation are available. They are insulation plate, flatwashers 12, and spring washers 12.

l The tools required for the installation are available. They are a horizontal ruler, torquewrench, socket wrench, and cross screwdriver.

Context

CAUTIONThe gravity center of the cabinet lies in the upper part. Therefore, do not lift or push the cabinetalone. To move a cabinet, at least two persons are required and use a forklift to ensure personalsafety and to avoid damage to the cabinet.



Issue 01 (2008-03-20)

Procedure

Step 1 Remove the protection boards in front of and at the rear of the cabinet.

Step 2 Remove the four wooden packing accessories at the left and right of the rack, pull down thehook pin on the front and rear doors, and then remove the front and rear doors and place themproperly, as shown in Figure 6-19.

Figure 6-19 Removing the wooden packing accessories

NOTE

When placing the doors of the cabinet, ensure that the locks are open to prevent distortion of the levers atthe lower part of the door, as shown in Figure 6-20.

Figure 6-20 State of locks on the front and rear doors

Step 3 Remove the short supporting beams in front of the cabinet, as shown in Figure 6-21.



6-15

Figure 6-21 Removing the short supporting beam in front of the cabinet

Step 4 Remove the two M6x12 screws on the air filter, as shown in ① of Figure 6-22. Remove the airfilter, as shown in ② of Figure 6-22, and store it properly for later use.



Issue 01 (2008-03-20)

Figure 6-22 Removing the air filter

Step 5 Determine the front of the cabinet, and then lift the cabinet onto the guide rail. Ensure that thefour installation holes at the bottom of the cabinet are in alignment with that on the guide rails.

Step 6 Fit the spring washers, flat washers, and insulation coverings on the four expansion bolts, insertthe expansion tube, and then screw the expansion nuts, as shown in Figure 6-23.

Step 7 From the front and rear of the cabinet, install two insulation plates at the lower part of the cabinet.Ensure that the nicks face inside and the installation holes on the insulation plates are in alignmentwith that for the expansion bolts, as shown in Figure 6-23.

Figure 6-23 Installing the cabinet

(1) N68E-22 cabinet (2) Guide rail (3) Support

(4) Insulation plate (5) Insulation covering (6) Flat washer



6-17

(7) Spring washer (8) Bolt

Step 8 Level the cabinet. Check the levelness of the cabinet using a horizontal ruler. If the cabinet isnot level, adjust the pad (adjusting range: 0–10 mm) using a socket wrench, as shown in Figure6-24.

Figure 6-24 Leveling the cabinet

(1) Adjusting pad (2) Fixing bolt

Step 9 Screw the four fixing bolts to 45 N·m by using a torque wrench.

----End

6.7 Testing the Insulation of the N68E-22 CabinetThis describes how to test the insulation of the N68E-22 cabinet to ensure that the cabinet isinsulated from the ground.

PrerequisiteThe multimeter required for the insulation test is available.

Procedure

Step 1 Set the multimeter to the megohm position.

Step 2 Measure the resistance between the M12x60 expansion bolt and the cabinet.

If... Then...

The resistance is equal to or greater than fivemegohms,

Go to Step 7.



Issue 01 (2008-03-20)

If... Then...

The resistance is smaller than five megohms, You can infer that the cabinet is not insulatedfrom the ground and then go to Step 3.

Figure 6-25 Insulation test

Step 3 Remove all the installation parts between the N68E-22 cabinet and the ground.

Step 4 Check that the insulation parts are not missing or damaged.

Step 5 Fix the cabinet again.

Step 6 Go back to Step 1 to test the insulation again.

Step 7 Use two M6x12 screws to fix the air filter and ensure that it is in the original position. See Figure6-26.



6-19

Figure 6-26 Repositioning the air filter

----End

6.8 Combining N68E-22 CabinetsThis describes how to use connecting plates to install two or more cabinets side by side.

PrerequisiteThe required tools such as wrench and climbing ladder are available.

ContextThe connecting plates are installed on top of and are delivered with the cabinets.

Procedure

Step 1 Remove the connecting plates from the column inside the cabinet, rotate each of them by 180degrees, and then reinstall them. Use M8x30 bolts to connect the connecting plates of the adjacentcabinets together. See Figure 6-27 ①.



Issue 01 (2008-03-20)

Figure 6-27 Connecting the connecting plates

Step 2 Remove the two connecting plates from the front and rear doorheads of the adjacent cabinets.Then, reinstall the connecting plates, as shown in Figure 6-27 ②.

Step 3 At the bottom of the combined cabinets and in front of the column, use a level bar to checkwhether the levelness and vertical deviation of the row of cabinets meet the specifications, asshown in Figure 6-28. If the cabinet is not level, use a socket wrench to adjust the leveling foot.



6-21

Figure 6-28 Using a level bar to check the levelness

----End

6.9 Restoring the ESD FloorThis describe how to restore the ESD floor. After the N68E-22 cabinet is installed on the ESDfloor, you need to install the horizontal pallet and restore the ESD floor around the cabinet.

Prerequisitel The materials required for the installation are available. They are the horizontal pallet and

M12x30 bolt assembly.l The materials required for the installation are available. They are spring washers 12 and

flat washers 12.l The tools required for the installation are available. They are a wrench and a hand saw.

Procedure

Step 1 Fix the horizontal pallet to the support using M12x30 bolt assembly, as shown inFigure 6-29.



Issue 01 (2008-03-20)

Figure 6-29 Installing the horizontal pallet

Step 2 Adjust the height of the horizontal pallet to ensure that the horizontal pallet securely contact theESD floor.

Step 3 Cut and restore the ESD floor around the racks based on actual requirements, as shown in Figure6-30.

Figure 6-30 Restoring the ESD floor around the racks

----End



6-23

7 Installing Power Cables and PGND Cablesfor the N68E-22 Cabinet

About This Chapter

This describes how to install the power cables and PGND cables between the N68E-22 cabinetand the Power Distribution Frame (PDF). When the cabinets are combined, you also need toinstall the PGND cables between the N68E-22 cabinets.

Prerequisitel The N68E-22 cabinet is installed.

l The power cables and PGND cables required for installing the N68E-22 are ready.

1. 7.4 Installing Power Cables and PGND Cables Between the N68E-22 Cabinet and the PDFThis describes how to install the power cables and PGND cables between the N68E-22cabinet and the PDF. The installation methods include two types: overhead cabling andunderfloor cabling. Select either of them according to the actual scenario.

2. 7.5 Installing PGND Cables Between the Adjacent N68E-22 CabinetsWhen the N68E-22 cabinets are combined, link the three equipotential PGND cables onthe mounting bars at the back of the cabinet between the adjacent N68E-22 cabinets.

3. 7.6 Checking the Power-On Status of the RNC CabinetsThis describes how to check the power supplies to the RNC. After the checking, ensurethat the power supplies to the subracks, fan box, and boards are all working properly.

N68E-22 Cabinet Installation Guide7 Installing Power Cables and PGND Cables for the N68E-22

Cabinet


7-1

7.1 RNC Power Cables and PGND Cables to Be InstalledThe power cables and PGND cables required to be installed on site are the external RNC powercables, external RNC PGND cables, and PGND cables for interconnecting RNC cabinets.

7.1.1 RNC Power CablesThe RNC power cables provide DC power for the cabinet and its internal modules. The RNCpower cables are of two categories: external power cables and internal power cables. The cablesare mandatory.

7.1.2 RNC PGND CablesThe PGND cables are used to ground the RNC cabinet and its internal modules. They aremandatory.

7.1.1 RNC Power CablesThe RNC power cables provide DC power for the cabinet and its internal modules. The RNCpower cables are of two categories: external power cables and internal power cables. The cablesare mandatory.

Description of RNC Power CablesThe RNC external power cables are used to connect the Power Distribution Frame (PDF) to theRNC power distribution box. The connectors of the external power cables need to be made onsite.

Table 7-1 shows the external power cables of the N68-21-N cabinet. Table 7-2 shows theexternal power cables of the N68E-22 cabinet.

Table 7-1 External power cables of the N68-21-N cabinet

CableName

Color Cross-SectionalArea

Type andInstallationPosition ofConnector 1


Quantity

External -48 VDCpowercable

Blue 25 mm2/35mm2

2-hole JGterminal/-48 V DCinput port on thepower distributionbox

Based on theactual sitemeasurement/-48 V DC outputport

4 per cabinet

External RTNpowercable

Black 25 mm2/35mm2

2-hole JG terminal/RTN input port onthe powerdistribution box

Based on theactual sitemeasurement/RTN outputport

4 per cabinet

7 Installing Power Cables and PGND Cables for the N68E-22Cabinet N68E-22 Cabinet Installation Guide


Issue 01 (2008-03-20)

Table 7-2 External power cables of the N68E-22 cabinet

CableName




Quantity

External -48 VDCpowercable

Blue 25 mm2/35mm2

OT terminal/-48 VDC input port on thepower distributionbox

Based on theactual sitemeasurement/-48 V DC outputport

4 per cabinet

External RTNpowercable

Black 25 mm2/35mm2

OT terminal/RTNinput port on thepower distributionbox

Based on theactual sitemeasurement/RTN outputport

4 per cabinet

NOTE

The colors of the external power cables listed here are just for reference. The colors must be in accordancewith the special field requirements if any.

The internal power cables connect the power distribution boxes to the modules inside the RNCcabinet and thus supply the multiple outputs of the power distribution box to the modules. Theinternal power cables are installed before the RNC cabinet is delivered.

The connectors of the power cables of the N68E-22 cabinet are the same as those of the N68-21-N cabinet. Table 7-3 shows the internal power cables of the RNC.

Table 7-3 Internal power cables of the RNC

CableName



ConnectorType 2/InstallationPosition 2

Quantity

Internal–48 Vpowercable

Blue 8 mm2 OT terminal/–48 VDC output port onthe powerdistribution boxFor details, see lines1, 3, 5, 7, 9, 11 in11.4 Connections ofPower Cables andPGND Cables inthe RNC Cabinet.

OT terminal/DC input porton the subrackFor details, seelines 1, 3, 5, 7,9, 11 in 11.4Connections ofPower Cablesand PGNDCables in theRNC Cabinet.

2 persubrack


Cabinet


7-3

CableName




Quantity

InternalRTNpowercable

Black 8 mm2 OT terminal/–48 VDC output port onthe powerdistribution boxFor details, see lines2, 4, 6, 8, 10, 12 in11.4 Connections ofPower Cables andPGND Cables inthe RNC Cabinet.

OT terminal/DC input porton the subrackFor details, seelines 2, 4, 6, 8,10, 12 in 11.4Connections ofPower Cablesand PGNDCables in theRNC Cabinet.

2 persubrack

AppearanceFigure 7-1 shows the internal power cable of the RNC.

Figure 7-1 -48 V/RTN internal power cable of the RNC

(1) OT terminal

Figure 7-2 shows the external power cable of the N68E-22 cabinet.

Figure 7-2 External power cable of the N68E-22 cabinet

(1) OT terminal

Figure 7-3 shows the external power cable of the N68-21-N cabinet.

Figure 7-3 External power cable of the N68-21-N cabinet

(1) OT terminal (2) 2-hole JG terminal



Issue 01 (2008-03-20)

7.1.2 RNC PGND CablesThe PGND cables are used to ground the RNC cabinet and its internal modules. They aremandatory.

Description of RNC PGND CablesThe external PGND cable is mandatory for the RNC cabinet. Each RNC cabinet is configuredwith one external PGND cable. When the cabinets are combined, three interconnection PGNDcables must be installed between every two adjacent cabinets. Other PGND cables are alreadyinstalled in the cabinet before delivery.

Table 7-4 describes the PGND cables of the N68-21-N cabinet.

Table 7-4 PGND cables of the N68-21-N cabinet

CableName




Quantity

ExternalPGNDcable

Green andyellow

25 mm2/35mm2

2-hole JGterminal/Groundingbolt at the topback of eachcabinet

Based on thesite survey/PGND outputport

1 percabinet

InterconnectionPGNDcable

Green andyellow

6 mm2 OT terminal/PGND Busbarof each RNCcabinetFor details,see lines 24 to26 inConnectionsof the powercables andPGND cablesin theN68-21-Ncabinet.

OT terminal/PGND Busbarof each RNCcabinetFor details, seelines 24 to 26 inConnections ofthe powercables andPGND cablesin the N68-21-N cabinet.

3 percouple ofadjacentcabinets


Cabinet


7-5

CableName




Quantity

PGNDcable of thecabinetBusbar

Green andyellow


OT terminal/PGND wiringpost on thecabinet topFor details, seelines 20 to 21 inConnections ofthe powercables andPGND cablesin the N68-21-N cabinet.

2 percabinet

PGNDcable of thepowerdistributionbox

Green andyellow

6 mm2 OT terminal/PGND Busbarof each RNCcabinetFor details,see line 13 inConnectionsof the powercables andPGND cablesin theN68-21-Ncabinet.

OT terminal/port for PGNDcable on thepowerdistribution boxFor details, seeline 13 inConnections ofthe powercables andPGND cablesin the N68-21-N cabinet.

1 percabinet

PGNDcable of thesubrack

Green andyellow


OT terminal/port for PGNDcable on thesubrackFor details, seelines 14 to 19 inConnections ofthe powercables andPGND cablesin the N68-21-N cabinet.

2 persubrack



Issue 01 (2008-03-20)

CableName




Quantity

PGNDcable of thecabinetdoor

Green andyellow

6 mm2 OT terminal/groundingbolt on thebaseFor details,see lines 50 to57 inConnectionsof the powercables andPGND cablesin theN68-21-Ncabinet.

OT terminal/grounding bolton each doorFor details, seelines 50 to 57 inConnections ofthe powercables andPGND cablesin the N68-21-N cabinet.

8 percabinet

Table 7-5 shows the PGND cables of the N68E-22 cabinet.

Table 7-5 PGND cables of the N68E-22 cabinet

CableName




Quantity

ExternalPGNDcable

Green andyellow

25 mm2/35mm2

OT terminal/groundingbolt at the topback of eachcabinet

Determine theterminal typebased on the sitesurvey/outputterminal of thePGND cable

1 percabinet


Cabinet


7-7

CableName




Quantity

InterconnectionPGNDcable

Green andyellow

6 mm2 OT terminal/groundinghole of themounting barof the RNCcabinetFor details,see lines 24 to26 inConnectionsof the powercables andPGND cablesin theN68E-22cabinet.

OT terminal/grounding holein the mountingbar of the RNCcabinetFor details, seelines 24 to 26 inConnections ofthe powercables andPGND cablesin the N68E-22cabinet.

3 betweenadjacentcabinets

PGNDcable of thepowerdistributionbox

Green andyellow

6 mm2 OT terminal/groundinghole in themounting barof the RNCcabinetFor details,see line 13 inConnectionsof the powercables andPGND cablesin theN68E-22cabinet.

OT terminal/terminal for thePGND cable onthe powerdistribution boxFor details, seeline 13 inConnections ofthe powercables andPGND cablesin the N68E-22cabinet.

1 percabinet



Issue 01 (2008-03-20)

CableName




Quantity

PGNDcable of thesubrack

Green andyellow

6 mm2 OT terminal/groundinghole in themounting barof the RNCcabinetFor details,see lines 14 to19 inConnectionsof the powercables andPGND cablesin theN68E-22cabinet.

OT terminal/port for thePGND cable onthe subrackFor details, seelines 14 to 19 inConnections ofthe powercables andPGND cablesin the N68E-22cabinet.

2 persubrack

PGNDcables ofcabinetdoors

Green andyellow

6 mm2 OT terminal/groundinghole in thecolumn of theRNC cabinetFor details,see lines 50 to57 inConnectionsof the powercables andPGND cablesin theN68E-22cabinet.

OT terminal/grounding bolton each doorFor details, seelines 50 to 57 inConnections ofthe powercables andPGND cablesin the N68E-22cabinet.

8 percabinet

NOTE

l The minimum bending radius of the RNC external PGND cable is 30 mm.

l The colors of the PGND cables listed here are just for reference. For special requirements, the colorscan be changed accordingly.

AppearanceFigure 7-4 shows the external PGND cable of the N68-21-N cabinet.


Cabinet


7-9

Figure 7-4 External PGND cable of the N68-21-N cabinet

(1) OT terminal (2) 2-hole JG terminal

Figure 7-5 shows the external PGND cable of the N68E-22 cabinet.

Figure 7-5 External PGND cable of the N68E-22 cabinet

(1) OT terminal

Figure 7-6 shows the internal RNC PGND cable.

Figure 7-6 Internal RNC PGND cable

(1) OT terminal

7.2 Connections of RNC Power Cables and PGND CablesThis describes how the power cables and the PGND cables connect the RNC to the powerdistribution frame (PDF) and how the PGND cables interconnect the RNC cabinets.

Figure 7-7 shows the connections of the power cables and PGND cables.

Figure 7-7 Cable connections



Issue 01 (2008-03-20)

NOTE

l Each RNC cabinet is configured with nine cables, that is four -48 V power cables, four RTN powercables, and one PGND cable.

l It is recommended that the PGND cables of the RNC cabinets be connected to the closest groundingbar. When the PDF is far from the RNC cabinets, for example, the PDF is not in the same equipmentroom as the RNC cabinets, connect the PGND cables of the RNC cabinets to the closest groundingbar co-grounded with the PDF rather than connect the PGND cables directly with the PDF.

7.3 Installation Specifications for RNC Power Cables andPGND Cables

When installing the RNC power cables and PGND cables, ensure that the requirements forrouting and binding the cables are met.

Requirements for Routing Cablesl Before routing the cables, wrap the connectors by using the insulating tapes to prevent the

connectors from contacting the terminals connected to the PDF.l While routing cables, take the capacity expansion into consideration.

l Separate the power cables and PGND cables from the signal cables.

l When power cables or PGND cables are laid parallel to signal cables, leave at least 10 mmbetween the power cables or PGND cables and the signal cables inside the cabinet and atleast 100 mm between them outside the cabinet.

l Ensure that the bend radius of the power cables and PGND cables is five times longer thanthe diameter of the cable.

l In the underfloor cabling mode, reserve extra length of the power cables outside the cableholes of the power distribution box on top of the cabinet. The purpose is to help plug inand pull out the cables. In addition, flush the cables at the top of the cabinet.

l When connecting power cables to the terminals of the power distribution box, route themin a straight manner and ensure that The cables are routed smoothly without any tangling.

Requirements for Binding Cablesl Bind the power cables and PGND cables separately from the signal cables.

l Bind the power cables and PGND cables every 200 mm.

l Determine the types of cable ties (100 mm, 150 mm, 300 mm, or 295 mm) based on thenumber of cables.

l Orient the cable ties to the same direction.

l Bind the cables tightly. Then cut off the surplus parts completely for indoor cable ties andleave 3 mm to 5 mm for outdoor cable ties. Trim the tails of the cable ties.

7.4 Installing Power Cables and PGND Cables Between theN68E-22 Cabinet and the PDF

This describes how to install the power cables and PGND cables between the N68E-22 cabinetand the PDF. The installation methods include two types: overhead cabling and underfloorcabling. Select either of them according to the actual scenario.


Cabinet


7-11

7.4.2 Installing Power Cables and PGND Cables Between the N68E-22 Cabinet and the PDF(Overhead Cabling)This describes how to install power cables and PGND cables between the N68E-22 cabinet andthe PDF by overhead cabling.

7.4.3 Installing Power Cables and PGND Cables Between the N68E-22 Cabinet and the PDF(Underfloor Cabling)This describes how to install power cables and PGND cables between the N68E-22 cabinet andthe PDF by underfloor cabling.

7.4.1 Overhead and Underfloor Cabling ModesThe cables can be connected to the RNC cabinet in either overhead cabling mode or underfloorcabling mode.

Based on actual scenarios, the cabling can be of either overhead or underfloor cabling mode.For overhead cabling mode, the cables are led upward out of the cabinet through the upper cablehole or other channels; for underfloor cabling mode, the cables are led downward out of thecabinet through the lower cable hole or other channels. Here shows an example of overhead/underfloor cabling mode through the upper/lower cable hole.

External cables can be connected to the RNC cabinet either through the upper cable hole or thelower cable hole. Each corner on the top and the bottom of the cabinet provides a rectangularcabling hole, as shown in Figure 7-8.



Issue 01 (2008-03-20)

Figure 7-8 Cable holes of the RNC cabinet

If the cable hole is covered with the rodent-proof cover, you need to remove the cover beforethe cabling. Then, lead the cables through the cable hole and bind the cables. Replace the rodent-proof cover on the cable hole, and mark the area to be cut based on the cross section of the boundcables. Then, use the scissors to cut the area. At last, replace the rodent-proof cover. Ensure thatthe bound cables fit in well with the cover, that is, the cables are fully engaged and no sideclearance is left.

Overhead CablingThe cables are fixed through the cable holes of the two sides at the top of the cabinet. Route thecables along both sides of the cabinet in the downward way to the related devices. The overheadcabling mode is suitable for the equipment room with the cement floor, as shown in Figure7-9.


Cabinet


7-13

Figure 7-9 Overhead cabling mode

Underfloor Cabling

The cables are fixed through the cable holes of the two sides at the bottom of the cabinet. Laythe cables along the both sides of the cabinet in the upward way to the related devices. Theunderfloor cabling mode is suitable for the equipment room with the ESD floor, as shown inFigure 7-10. When the underfloor cabling mode is applied, ensure that the height of the piledcables cannot exceed the 3/4 height of the space under the ESD floor.

Figure 7-10 Underfloor cabling mode



Issue 01 (2008-03-20)

7.4.2 Installing Power Cables and PGND Cables Between theN68E-22 Cabinet and the PDF (Overhead Cabling)

This describes how to install power cables and PGND cables between the N68E-22 cabinet andthe PDF by overhead cabling.

Prerequisitel The N68E-22 cabinet to be connected with power cables and PGND cables is installed.

l The output power switches on the PDF are set to OFF.

l All switches on the power distribution box of the N68E-22 cabinet are set to OFF.

l The parts to be installed are all ready. The parts for the installation are: power cable andPGND cable.

l The materials required for the installation are ready. The materials required refer to cableties.

l The tools required for the installation are all ready. The tools for the installation are:diagonal pliers, handsaw, cable cutter, wrench, and cross screwdriver.

Context

The following takes the PDF shipped with the RNC as an example to describe how to install thecables within the PDF. For details, refer to the documents shipped with the PDF. If other typesof DC power distribution cabinets are used on site, refer to the relevant documents for the cableinstallation.

Figure 7-11 shows how to install power cables and PGND cables between the N68E-22 cabinetand the PDF by overhead cabling.

Figure 7-11 Installing power cables and PGND cables between the N68E-22 cabinet and thePDF (overhead cabling)


Cabinet


7-15

Procedure

Step 1 Determine the length of each power cable and PGND cable by referring to the relevantengineering design document or according to the actual site survey.

Step 2 Lay out the power cables and PGND cables on site, and determine the length of the cables usingthe tape measure or other measuring tools. Then , use the handsaw (teeth space: 0.8 mm) or cablecutter (KT35) to cut the cable of the length a little longer than necessity.

CAUTIONIf a cable is not long enough, replace it with a longer one. Do not join another cable to the shortone by adding a connector or welding.

Step 3 Attach temporary labels to both ends of the cables. The contents on the temporary labels are notrestricted because they are only for distinguishing the cables after the layout.

Step 4 Lay the power cables and PGND cables according to the requirements for routing cables andthe engineering requirements.1. Lead the power cables and PGND cable out of the PDF through the upper cable hole in the

PDF.

CAUTIONl If the distance between the cable rack and the top of the cabinet exceeds 800 mm, use

a ladder for leading the cables down to the cabinet.l Ensure that the bend radius is five times longer than the diameter of the cable.

2. Lead the cables to the cable rack.3. Lead the cables to the top of each N68E-22 cabinet along the cable rack.

Step 5 Connect the power cables and PGND cable to the N68E-22 cabinet.1. Make OT terminals for the power cables and PGND cable at the N68E-22 cabinet. Refer

to Assembling the OT Terminal and the Power Cable.2. Fix the wiring terminal of the PGND cable to the grounding bolt at the top back of the

cabinet. The grounding bolt is labeled .3. Remove the plastic cover plates off the cable holes on the top of the cabinet, and prepare

the cover plates and screws for future use.4. Lead the RTN and -48 V power cables through the upper cable hole into the cabinet until

they reach the input terminals of the power distribution box. Link the RTN cables to thewiring terminal labeled +, and the -48 V cables to the wiring terminal labeled -. Then, fastenthe screws.



Issue 01 (2008-03-20)

CAUTIONInput power is not allowed at the 2(+)2(-) input terminals. Thus, link the RTN and -48 Vpower cables respectively to input terminals 1(+), 1(-), and 3(+), 3(-).

5. Cut an appropriate cross section of the plastic cover plate after the layout, and then coverthe cable hole with the cut plastic cover plate. Fasten the screws.

Step 6 Link the other end of the power cable to the PDF, and link the other end of the PGND cable tothe PDF or close to the PGND bar.1. Remove the insulating tapes from the connectors of the cables. Determine the length of the

cables according to their installation positions, and then cut off the redundant parts.2. Determine the type of connectors for the power and PGND cables at the PDF according to

the cable connection principle of the PDF and the engineering requirements. Then, makethe connectors as required.

3. Connect the PGND cable, the RTN, and the -48 V power cables to the corresponding wiringposts on the PDF. Fasten all screws.

----End

PostrequisiteRecord the operation results in the checklist, as shown in Data Sheets of RNC HardwareInstallation.

7.4.3 Installing Power Cables and PGND Cables Between theN68E-22 Cabinet and the PDF (Underfloor Cabling)

This describes how to install power cables and PGND cables between the N68E-22 cabinet andthe PDF by underfloor cabling.

Prerequisitel The N68E-22 cabinet to be connected with power cables and PGND cables is installed.

l The output power switches on the PDF are set to OFF.

l All switches on the power distribution box of the N68E-22 cabinet are set to OFF.

l The parts to be installed are all ready. The parts for the installation are: power cable andPGND cable.

l The materials required for the installation are ready. The materials required refer to cableties.

l The tools required for the installation are all ready. The tools for the installation are:diagonal pliers, cable cutter, wrench, cross screwdriver, and lifting rope.

Context

This document takes the PDF shipped with the RNC as an example to describe how to installthe cables within the PDF. For details, refer to the documents shipped with the PDF. If othertypes of DC power distribution cabinets are used on site, refer to the relevant documents for thecable installation.


Cabinet


7-17

Figure 7-12 shows how to install power cables and PGND cables between the N68E-22 cabinetand the PDF by underfloor cabling.

Figure 7-12 Installing power cables and PGND cables between the N68E-22 cabinet and thePDF (underfloor cabling)

Procedure

Step 1 Determine the length of each power cable and PGND cable by referring to the relevantengineering design document or according to the actual site survey.

Step 2 Lay out the roll of power cables and PGND cable on site, and determine the length of the cablesusing the tape measure or other measuring tools. Then , use the handsaw (teeth space: 0.8 mm)or cable cutter (KT35) to cut off the cable of the length a little longer than necessity.

CAUTIONIf a cable is not long enough, replace it with a longer one. Do not join another cable to the shortone by adding a connector or by welding.



Issue 01 (2008-03-20)

Step 3 Attach temporary labels to both ends of the cables. The contents on the temporary labels are notrestricted because they are only for distinguishing the cables after the layout.

Step 4 Lay the power cables and PGND cable according to the requirements for routing cables andengineering requirements.

1. Lead four pairs of power cables and one PGND cable through the lower cable hole of thePDF along under the ESD floor to below the N68E-22 cabinet.

2. Divide the four pairs of power cables into two groups, each of which involves two pairs.Bind one of the two groups and the PGND cable with the cable tie, and then use the cabletie to bind the other group separately. Route the two groups of cables to the central columnsat both sides of the N68E-22 cabinet.

3. Route one end of the lifting rope through the central column of the cabinet until it reachesthe bottom of the cabinet, and then bind the lifting rope with the power and PGND cablesbelow the central column.

4. Pull the end of the lifting rope at the top of the central column until the power cables andPGND cable reach the top of the central column.

5. Remove the temporary cable ties off the lifting rope, the power cables and PGND cable.

Step 5 Connect the power cables and PGND cable to the N68E-22 cabinet.1. Make OT terminals for the power cables and PGND cable at the N68E-22 cabinet. Refer

to Assembling the OT Terminal and the Power Cable.2. Fix the wiring terminal of the PGND cable to the grounding bolt at the top back of the

cabinet. The grounding bolt is labeled .3. Remove the plastic cover plates off the cable holes on the top of the cabinet, and prepare

the cover plates and screws for future use.4. Lead the RTN and -48 V power cables through the upper cable hole into the cabinet until

they reach the input terminals of the power distribution box. Link the RTN cables to thewiring terminal labeled +, and the -48 V cables to the wiring terminal labeled -. Then, fastenthe screws.

CAUTIONInput power is not allowed in the 2(+)2(-) input terminals. Thus, link the RTN and -48 Vpower cables respectively to input terminals 1(+), 1(-), and 3(+), 3(-).

5. Cut an appropriate cross section of the plastic cover plate after the layout, and then coverthe cable hole with the cut plastic cover plate. Fasten the screws.

Step 6 Connect the power cables to output terminals of the PDF.1. Remove the insulating tapes from the connectors of the cables. Determine the length of the

cables according to their installation positions, and then cut off the extra parts.2. Determine the type of connectors for the power and PGND cables at the PDF according to

the cable connection principle of the PDF and the engineering requirements. Then, theconnectors are made as required.

3. Connect these cables including the PGND cable, the RTN, and the -48 V power cables tothe corresponding wiring posts on the PDF.

----End


Cabinet


7-19


7.5 Installing PGND Cables Between the Adjacent N68E-22Cabinets

When the N68E-22 cabinets are combined, link the three equipotential PGND cables on themounting bars at the back of the cabinet between the adjacent N68E-22 cabinets.

Prerequisitel The N68E-22 cabinets to be connected with the PGND cables are installed.

l All switches on the power distribution boxes of the N68E-22 cabinets are set to OFF.

l All the related power distribution switches on the PDF are set to OFF.

ContextEach end of the three equipotential cables is respectively fixed to the mounting bar on the rightback of the cabinet.

Procedure

Step 1 Position the three equipotential cables on the mounting bar at the back of the cabinet.

Step 2 Link the three equipotential cables between the combined cabinets, as shown in Figure 7-13.



Issue 01 (2008-03-20)

Figure 7-13 PGND cables between adjacent cabinets

----End

PostrequisiteRecord the installation results in the checklist, as shown in Data Sheets of RNC HardwareInstallation.

7.6 Checking the Power-On Status of the RNC CabinetsThis describes how to check the power supplies to the RNC. After the checking, ensure that thepower supplies to the subracks, fan box, and boards are all working properly.

Prerequisitel The RNC cabinet is connected to the PDF by power cables and PGND cables.

l All the internal power cables and PGND cables are installed.

l All subracks within the cabinet, the fan box within the subrack, and boards are installed.

l The multimeter is ready.

Context

The RNC cabinet uses the DC power supply. For the requirements of the cabinet power supply,refer to Technical Specifications for the RNC Power Distribution Box.


Cabinet


7-21

CAUTIONCorrectly put on the ESD wrist strap and ensure that the ESD wrist strap is properly connectedto the ESD connector on the cabinet.

Procedure

Step 1 On the PDF, set the status of the corresponding output switch to be OFF.On the powerdistribution box of the RNC cabinet, set the status of the corresponding output switch to beOFF.

Step 2 Set the multimeter to the state of resistance measurement. Use the multimeter to measure theoutput terminal on the PDF and the input and output terminals of the power distribution box onthe RNC cabinet. Check that no short circuit exists between the working power supply of-48V and the working location RTN or between the working power supply of -48V and thePGND.

Step 3 On the PDF, set the status of the corresponding output switch to be ON. On the power distributionbox of the RNC cabinet, set the status of the corresponding output switch to be OFF.At this time, the power distribution box turns to the self-test mode. The RUN and ALM LEDsare on at the same time and the buzzer buzzes. After the self-test is complete, the powerdistribution box requests the SCUa board for registry until the registry succeeds. During therequest process, the RUN LED on the power distribution box blinks at 2 Hz. When the requestfor registry succeeds, the RUN LED blinks at 0.5 Hz. For the description about the LED statuson the power distribution box, refer to LEDs on the Front Panel of the RNC PowerDistribution Box.

Step 4 Set the multimeter to the state of voltage measurement. Use the multimeter to measure the outputvoltage of the PDF or the input voltage of the power distribution box within the cabinet. Ensurethat the voltage ranges from -57 V to -40 V before you proceed the next test item.

Step 5 Take a subrack as a unit and set the corresponding switch of the power distribution box withinthe RNC cabinet to ON.

Step 6 Set the multimeter to the state of voltage measurement. Use the multimeter to measure the voltagerange. Check whether the output power range of the subrack is within the allowed voltage range,that is, from -57 V to -40 V. At the same time, check whether the fan box within the subrackand the power supply of the boards within the subrack can work properly.l After the subrack is powered on, the green STATUS LED on the panel of the fan box blinks.

In case of abnormality, turn off the corresponding switch of the power distribution boximmediately, turn off the switch of the PDF, and check whether the output voltage of thepower distribution box is abnormal and whether the power cables are wrongly installed. Forthe description about the LED status of the fan box, refer to LED on the Fan Box.

l After the subrack is powered on, the RUN LED on the panel of the board is on steady orblinks. If none of the LEDs for a board is on after the subrack is powered on, the slot or theboard itself might be faulty. Then, contact Huawei for technical support. For the descriptionabout the LEDs on boards, refer to RNC LEDs.

l In case of abnormality, that is, when all of the LEDs for all boards within a subrack is off,turn off the corresponding switch of the power distribution box immediately, and then turnoff the switch of the PDF. Check whether the output voltage of the power distribution boxis abnormal and whether the power cables are wrongly installed.



Issue 01 (2008-03-20)

Step 7 Repeat Step 5 through Step 6 until the tests for the power-on status of the three subracks withinone RNC cabinet are complete.

Step 8 Repeat Step 1 through Step 7 to measure the power supply for other RNC cabinets.

----End

PostrequisiteRecord the test results in the checklist as shown in Data Sheets of RNC HardwareInstallation.


Cabinet


7-23

8 Installing Accessories for the N68E-22Cabinet

About This Chapter

This describes how to install the PGND cables on the side door, front door, and back door ofthe N68E-22 cabinet.

Prerequisitel The cabinet is installed.

l Accessories of the cabinet are delivered to the site.

1. 8.2 Installing Side Doors of the N68E-22 CabinetA single N68E-22 cabinet has four side doors. When multiple N68E-22 cabinets arecombined in a row, install four side doors between the ends of the cabinet row and the walls.When the N68E-22 cabinet is combined with other types of cabinets, you need to installthe side doors where the cabinets are combined.

2. 8.3 Installing Front and Back Doors of N68E-22 CabinetThere are two types of cabinets: single-door cabinet and double-door cabinet. Theinstallation methods of the front/back door for either type of cabinets are the same. Hereshows an example of front/back door installation of a single-door cabinet.

3. 8.4 Installing PGND Cables for N68E-22 Cabinet DoorsEach door of the cabinet needs to be installed with a PGND cable.

N68E-22 Cabinet Installation Guide 8 Installing Accessories for the N68E-22 Cabinet


8-1

8.1 N68E-22 Cabinet AccessoriesThe accessories include the front, back, and side doors, and their PGND cables.

Table 8-1 lists N68E-22 cabinet accessories to be installed.

Table 8-1 N68E-22 cabinet accessories to be installed

Name Installation Position Remarks

Side door Refer to 11.2 Exploded View of theN68E-22 Cabinet.

Four side doors need to beinstalled for the combinedcabinets. That is, two side doorsneed to be installed on theleftmost side and another twoside doors on the rightmost sideof the cabinet.

Front/back door The methods for installing thesingle-door and the double-doorcabinets are identical.

PGND cablesconnected to thecabinet doors

The PGND cables refer to thosebetween the front/back/side doorand the cabinet base.

8.2 Installing Side Doors of the N68E-22 CabinetA single N68E-22 cabinet has four side doors. When multiple N68E-22 cabinets are combinedin a row, install four side doors between the ends of the cabinet row and the walls. When theN68E-22 cabinet is combined with other types of cabinets, you need to install the side doorswhere the cabinets are combined.

Prerequisitel The parts to be installed are all ready. The parts refer to the side doors to be installed and

the sunk screws M6 x 12.l The tools required for the installation are all ready. The tool refers to the cross screwdriver

with a long handle.

ContextFigure 8-1 shows the installation of a side door for the N68E-22 cabinet.

8 Installing Accessories for the N68E-22 Cabinet N68E-22 Cabinet Installation Guide


Issue 01 (2008-03-20)

Figure 8-1 Installation of a side door for the N68E-22 cabinet

Procedure

Step 1 Remove the connecting plate from the top of the cabinet , as shown in ① of Figure 8-1.

Step 2 Link the PGND cable on the rack to the grounding bolt on the side door, as shown in ② ofFigure 8-1.

Step 3 Place the side door properly, align the eight M6 x 12 screws with the installation holes, and thenfasten the screws, as shown in ③ of Figure 8-1.

----End




8-3

8.3 Installing Front and Back Doors of N68E-22 CabinetThere are two types of cabinets: single-door cabinet and double-door cabinet. The installationmethods of the front/back door for either type of cabinets are the same. Here shows an exampleof front/back door installation of a single-door cabinet.

Prerequisitel To facilitate the operation, install the front door and the back door after installing the other

hardware.l The front door and the back door to be installed are ready.

ContextFigure 8-2 shows the installation of a front/back door for the RNC cabinet.

Figure 8-2 Installation of a front/back door for the N68E-22 cabinet

Procedure

Step 1 Insert the pivot pin of the door into the hole in the lower lintel of the cabinet, as shown in ① ofFigure 8-2.

Step 2 Pull down the latch, align the latch with the pivot hole in the upper lintel of the cabinet, and thenrelease the latch so as to fix the door onto the cabinet, as shown in ② of Figure 8-2.

----End



Issue 01 (2008-03-20)


8.4 Installing PGND Cables for N68E-22 Cabinet DoorsEach door of the cabinet needs to be installed with a PGND cable.

Prerequisitel The PGND cables to be installed are ready.

l The tools required for the installation are all ready. The tools refer to cross screwdriver andwrench.

Context

Figure 8-3 shows the installation positions of the PGND cables on N68E-22 cabinet doors.

Figure 8-3 Connecting PGND cables to N68E-22 cabinet doors



8-5

Procedure

Step 1 As shown in ① of Figure 8-3, install the PGND cable of the side door.

NOTEFor a row of combined cabinets, only the PGND cables of the side doors at the ends of the cabinet rowneed to be installed.

Step 2 As shown in ② of Figure 8-3, install the PGND cable of the front/back door.

----End



Issue 01 (2008-03-20)

9 Labeling RNC Cabinets

The labels to be attached to the RNC cabinet are the row labels, column labels, and productlabels.

ContextFigure 9-1 shows the row labels.

Figure 9-1 Row labels

Figure 9-2 shows the column labels.

Figure 9-2 Column labels

The product label is an oblong one and identifies the RNC product. Figure 9-3 shows where theproduct label shall be attached.

N68E-22 Cabinet Installation Guide 9 Labeling RNC Cabinets


9-1

Figure 9-3 Position for attaching the product label

Procedure

Step 1 Attach row labels.

Attach row labels to the side doors on the two ends of each cabinet row.

When there is more than one row of cabinets, attach the label A to the side doors at the two endsof the cabinet row which is closest to the door of the equipment room, the label B to the secondrow, the label C to the third row, and so on.

Step 2 Attach column labels.

The column label is attached on the doorhead of the cabinet front. Attach the label 00 to the firstcabinet near the main aisle, 01 to the second one, 02 to the third one, and so on.

Step 3 Check that product labels are available on the front/back doors of the cabinet. Otherwise, obtainthe product labels from delivered accessories and attach them to the top left of each front/backdoor of the cabinet. Refer to Figure 9-3.

----End


9 Labeling RNC Cabinets N68E-22 Cabinet Installation Guide


Issue 01 (2008-03-20)

10 Labeling Power Cables and PGNDCables of the RNC

After the power cables and PGND cables of the RNCs are installed, remove the temporary labelsfrom the cables and attach engineering labels to these cables.

Prerequisitel All the power cables and PGND cables are installed.

l The materials are all ready. The materials refer to the ball pen and the label paper.

Procedure

Step 1 Remove the temporary labels from the power cables.

Step 2 For how to make the engineering labels for the power cables and the PGND cables, refer toLabeling Power Cables.

----End


N68E-22 Cabinet Installation Guide 10 Labeling Power Cables and PGND Cables of the RNC


10-1

11 Appendix

About This Chapter

This provides the exploded view of the N68E-22 cabinet and an installation checklist.

11.1 Checklist for RNC Cabinet InstallationThis describes the items and specifications for checking the installation of the RNC cabinet.

11.2 Exploded View of the N68E-22 CabinetThis shows the components of the N68E-22 cabinet and parts on the cabinet.

11.3 Layout of Power Switches on the RNC CabinetThe power distribution box of the RNC cabinet provides 20 (10 x 2) power outputs. The 6 (3 x2) power outputs of RNC the power distribution box provide power for specific internalcomponents in the RNC cabinet.

11.4 Connections of Power Cables and PGND Cables in the RNC CabinetThe power cables and PGND cables in the RSR cabinet are connected the same way as those inthe RBR cabinet.

N68E-22 Cabinet Installation Guide 11 Appendix


11-1

11.1 Checklist for RNC Cabinet InstallationThis describes the items and specifications for checking the installation of the RNC cabinet.

Table 11-1 lists the items and specifications for checking the installation of the RNC cabinet.

Table 11-1 Checked items for RNC cabinet installation

No. Checked Item

1 The cabinets are arranged in accordance with the engineering design.

2 The supports are positioned and spaced in accordance with the drawing of theinstallation holes. (This item applies to the cabinet installation on the ESD floor.)

3 All supports are fixed to the floor correctly. (This item applies to the cabinetinstallation on the ESD floor.)

4 All components of the supports are installed correctly. (This item applies to thecabinet installation on the ESD floor.)

5 All floor holders are installed at the same height. (This item applies to the cabinetinstallation on the ESD floor supported by floor holders.)

6 Each cabinet is well insulated from the support or the floor.

7 All plastic boards are installed on the top and bottom of the cabinets.

8 All cabinet accessories are installed, including front door, back door, and side doors.

9 The row labels, column labels, and product labels are attached to the specifiedpositions.

10 The ESD wrist strap is connected to the ESD bonding point on the cabinet.

11 All connecting plates are installed for combining cabinets.

12 Insulation is performed for shockproof parts between multiple rows of cabinets.

13 All bolts are fixed with flat washers and spring washers in a correct order.

14 The cabinets are stable and orderly.

15 All the adjacent cabinets stand side by side in a straight line.

16 The vertical deviation of cabinet installation is less than 3 mm.

17 All cabinet side doors facing the aisle are aligned with the error less than 5 mm.

18 The surfaces of the cabinets are clean without any fingerprint or smudge. There isno dust, excessive cable tie ends or other sundries either inside or outside eachcabinet.

19 All kinds of labels are correct, legible and intact.

20 The front and back doors of the cabinets are easy to open or close.

11 Appendix N68E-22 Cabinet Installation Guide


Issue 01 (2008-03-20)

No. Checked Item

21 The modules in one cabinet are aligned from the top down.

22 All the filler panels are installed.

23 All boards are installed in proper positions, and their DIP switches are properly set.

24 No parts on the cabinets are damaged or detached. No cables are damaged orsnapped.

25 No paint is detached. No distortion exists.

11.2 Exploded View of the N68E-22 CabinetThis shows the components of the N68E-22 cabinet and parts on the cabinet.

Figure 11-1 shows the exploded view of the N68E-22 cabinet.



11-3

Figure 11-1 Exploded view of the N68E-22 cabinet

1 Rack 2 Side door 3 Front/back door

Figure 11-1 shows the parts alphabetically sequenced in Table 11-2.



Issue 01 (2008-03-20)

Table 11-2 Parts on the cabinet

No. Description No. Description

a

1 Product label

b

1 Huawei logo

c

1 Connecting plate for combiningRNC cabinets

d

(1) Central column

e

1 Plastic cover plate (for the powercable hole)2 Power cable hole

f

1 Grounding position of the cabinet

g

1 Latch

h

1 Wire bushing

i

1 Grounding screw

j

1 Adjusting anchor bolt



11-5

No. Description No. Description

k

1 Pin hole

l

1 Pivot pin on the lower part of thefront door

11.3 Layout of Power Switches on the RNC CabinetThe power distribution box of the RNC cabinet provides 20 (10 x 2) power outputs. The 6 (3 x2) power outputs of RNC the power distribution box provide power for specific internalcomponents in the RNC cabinet.

The power distribution box of the RNC cabinet provides 6 (3 x 2) power outputs for the subracks.The power supply is divided into two groups: A and B. The switches are A8 to A10 and B8 toB10. Figure 11-2 and Figure 11-3 show the assignment of power switches on the powerdistribution box. Table 11-3 describes the relation between the switches and subracks.

Figure 11-2 Assignment of power switches on the RSR power distribution box



Issue 01 (2008-03-20)

Figure 11-3 Layout of power switches on the RBR power distribution box

Table 11-3 Relation between the switches and subracks

RNC Subracks Power Switches

Subrack 2, subrack 5 A8, B8



11.4 Connections of Power Cables and PGND Cables in theRNC Cabinet

The power cables and PGND cables in the RSR cabinet are connected the same way as those inthe RBR cabinet.

Figure 11-4 shows the connections of the power cables and the PGND cables in the N68-21-Ncabinet.



11-7

Figure 11-4 Connections of power cables and PGND cables in the N68-21-N cabinet

Table 11-4 describes connections of the power cables and PGND cables in the RNC cabinet.

Table 11-4 Connections of power cables and PGND cables in the RNC cabinet (N68-21-N)

Number Description

5, 6; 11, 12 Power cables of the lowest subrack

3, 4; 9, 10 Power cables of the middle subrack

1, 2; 7, 8 Power cables of the highest subrack



Issue 01 (2008-03-20)

Number Description

13 PGND cable connecting the power distribution box andthe busbar

14, 15, 16; 17, 18, 19 PGND cables connecting subracks to busbars

20, 21 PGND cables of the cabinet busbar

24, 25, 26 PGND cables connecting the adjacent cabinets

50 to 57 PGND cables of cabinet doors

Figure 11-5 shows the connections of the power cables and the PGND cables in the N68E-22cabinet.



11-9

Figure 11-5 Connections of power cables and PGND cables in the N68E-22 cabinet

Table 11-5 describes connections of the power cables and PGND cables in the RNC cabinet.

Table 11-5 Connections of power cables and PGND cables in the RNC cabinet (N68E-22)

Number Description

5, 6; 11, 12 Power cable of the lowest subrack

3, 4; 9, 10 Power cable of the middle subrack

1, 2; 7, 8 Power cable of the highest subrack



Issue 01 (2008-03-20)

Number Description

13 PGND cable connecting the power distribution box andthe mounting bar

14, 15, 16; 17, 18, 19 PGND cables connecting the subracks and the mountingbar

24, 25, 26 PGND cables connecting the adjacent cabinets

50 to 57 PGND cables of cabinet doors



11-11

00407710 n68e 22 cabinet installation guide (v200r010_01)

Documents