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BTS3900(Ver.D)

V100R009C00

Installation Guide

Issue 03

Date 2014-08-30

HUAWEI TECHNOLOGIES CO., LTD.


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About This Document

Overview

This document describes the installation process for the BTS3900 (Ver.D) (shortened to

BTS3900 in this document) cabinet, boards, modules, and cables. It also provides checklists for

hardware installation.

Product Version

The following table lists the product versions related to this document.

Product Name Solution Version Product Version

BTS3900 l SRAN9.0

l GBSS16.0

l RAN16.0

l eRAN7.0

V100R009C00

Intended Audience

This document is intended for:

l Base station installation personnel

Organization

1 Changes in BTS3900 (Ver.D) Installation Guide

This chapter describes the changes inBTS3900 (Ver.D) Installation Guide.

2 Overview

Familiarize yourself with this information as well as the cabinet interior, application scenarios

of the cabinets, and relevant clearance requirements before installing the cabinets.

3 Installation Preparations

BTS3900(Ver.D)

Installation Guide About This Document

Issue 03 (2014-08-30) Huawei Proprietary and Confidential

Copyright Huawei Technologies Co., Ltd.

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This chapter lists the tools and instruments that must be obtained before the installation. It also

specifies the skills that the onsite personnel must have.

4 Unpacking Check

Unpack and check the delivered equipment to ensure that all the materials are included and intact.

5 Obtaining the ESN

The electronic serial number (ESN) is a unique identifier of a NE. Record the ESN of the base

station beforethe installation for future commissioning.

6 Installation Process

Before the BTS3900 cabinets are delivered, boards inside the cabinets have been installed. You

only need to install the cabinet and cables onsite. Some optional components may also need to

be installed based on onsite requirements.

7 Checking Installed Modules and Cables

Modules and cables in the cabinet have been installed before delivery. You need to check whether

the modules and cables are installed securely.

8 Installing a Base

A BTS3900 cabinet can be installed on a base. The base can be installed either on a concrete

floor or ESD floor according to the equipment room conditions and customer's requirements.

9 Installing the Cabinet

A BTS3900 cabinet can be installed alone, side by side with another BTS3900 cabinet, or stacked

on another BTS3900 cabinet. This section describes the procedure for installing the BTS3900(Ver.D) cabinets in the preceding modes. The procedures for installing the BTS3900(Ver.B),

BTS3900(Ver.C), and BTS3900(Ver.D) cabinets are the same.

10 Installing a PGND Cable and an Equipotential Cable

A PGND cable connects a PGND screwin a cabinet and a PGND bar to ensure proper grounding

of the cabinet. An equipotential cable connects PGND screws on different cabinets to ensure the

equipotential bonding between the cabinets.

11 Installing Optional Modules and Their Cables

This chapter describes procedures for installing the optional modules and their cables onsite.

12 Installing Cables

Before cabinets are delivered, the boards and cables inside the cabinets have been installed. You

must install the external cables and cables for optional components onsite.

13 Installation Checklist

After the cabinets and devices are installed, you need to check the installation items, installation

environment,and cable-related items.

14 Powering On a Base Station

This section describes how to power on a base station and handle a failure in the power supply

to the components in a cabinet.

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Conventions

Symbol Conventions

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

Symbol Description

Indicates an imminently hazardous situation which, if not

avoided, will result in death or serious injury.

Indicates a potentially hazardous situation which, if not

avoided, could result in death or serious injury.


avoided, may result in minor or moderate injury.


avoided, could result in equipment damage, data loss,

performance deterioration, or unanticipated results.

NOTICE is used to address practices not related to personal

injury.

Calls attention to important information, best practices and

tips.

NOTE is used to address information not related to personal

injury, equipment damage, and environment deterioration.

General Conventions

The general conventions that may be found in this document are defined as follows.

Convention Description

Times New Roman Normal paragraphs are in Times New Roman.

Boldface Names of files, directories, folders, and users are inboldface. For example, log in as user root.

Italic Book titles are in italics.

Courier New Examples of information displayed on the screen are in

Courier New.

Command Conventions

The command conventions that may be found in this document are defined as follows.

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Boldface The keywords of a command line are in boldface.

Italic Command arguments are in italics.

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

{ x | y | ... } Optional items are grouped in braces and separated by

vertical bars. One item is selected.

[ x | y | ... ] Optional items are grouped in brackets and separated by

vertical bars. One item is selected or no item is selected.

{ x | y | ... }* Optional items are grouped in braces and separated by

vertical bars. A minimum of one item or a maximum of all

items can be selected.

[ x | y | ... ]* Optional items are grouped in brackets and separated by

vertical bars. Several items or no item can be selected.

GUI Conventions

The GUI conventions that may be found in this document are defined as follows.


Boldface Buttons, menus, parameters, tabs, window, and dialog titles

are in boldface. For example, click OK.

> Multi-level menus are in boldfaceand separated by the ">"

signs. For example, choose File> Create> Folder.

Keyboard Operations

The keyboard operations that may be found in this document are defined as follows.

Format Description

Key Press the key. For example, press Enterand press Tab.

Key 1+Key 2 Press the keys concurrently. For example, pressing Ctrl+Alt

+Ameans the three keys should be pressed concurrently.

Key 1, Key 2 Press the keys in turn. For example, pressing Alt, Ameans

the two keys should be pressed in turn.

Mouse Operations

The mouse operations that may be found in this document are defined as follows.

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Action Description

Click Select and release the primary mouse button without moving

the pointer.

Double-click Press the primary mouse button twice continuously and

quickly without moving the pointer.

Drag Press and hold the primary mouse button and move the

pointer to a certain position.

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Contents

About This Document.....................................................................................................................ii

1 Changesin BTS3900 (Ver.D) Installation Guide....................................................................1

2 Overview.........................................................................................................................................3

2.1 Components of BTS3900 Cabinets................................................................................................................................4

2.2 BTS3900 (Ver.D) Configured with RFUs but Without RRUs.....................................................................................10

2.3 BTS3900 (Ver.D) Configured with RFUs and RRUs..................................................................................................15

2.4 Installation Clearance and Layout Requirements.........................................................................................................21

3 Installation Preparations............................................................................................................25

3.1 Documents....................................................................................................................................................................26

3.2 Tools and Instruments..................................................................................................................................................26

3.3 Requirements for Onsite Personnel..............................................................................................................................27

4 Unpacking Check........................................................................................................................28

5 Obtaining the ESN......................................................................................................................30

6 Installation Process.....................................................................................................................32

7 Checking Installed Modules and Cables................................................................................34

7.1 Checking a BTS3900 DC Cabinet................................................................................................................................35

7.2 Checking a BTS3900 AC Cabinet................................................................................................................................37

8 Installing a Base...........................................................................................................................42

8.1 Installing a Base on the Concrete Floor........................................................................................................................43

8.2 Installing the Base on the ESD Floor...........................................................................................................................47

9 Installing the Cabinet.................................................................................................................56

9.1 Installing a Cabinet Without a Base.............................................................................................................................57

9.2 Installing a Cabinet on a Base......................................................................................................................................62

9.3 Installing Cabinets Side by Side...................................................................................................................................64

9.4 Stacking Two Cabinets.................................................................................................................................................66

10 Installing a PGND Cable and an Equipotential Cable......................................................68

11 Installing Optional Modules and Their Cables..................................................................73

11.1 Installing the GPS Surge Protector.............................................................................................................................75

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11.2 Installing the GATM and Bias-Tee............................................................................................................................78

11.3 Installing a DCDU-12B..............................................................................................................................................84

11.4 Installing the BBU......................................................................................................................................................89

11.5 Installing Boards in the BBU and surge protection boards........................................................................................97

11.6 Installing the RFU....................................................................................................................................................100

11.7 Installing the EMU...................................................................................................................................................106

11.8 Installing the RRU....................................................................................................................................................108

12 Installing Cables......................................................................................................................109

12.1 Cabling Requirements..............................................................................................................................................110

12.2 Cable Holes...............................................................................................................................................................116

12.3 Installing Power Cables............................................................................................................................................120

12.3.1 Installing Power Cables for AC Cabinets..............................................................................................................120

12.3.2 Installing Power Cables for DC Cabinets..............................................................................................................13112.4 Installing Transmission Cables.................................................................................................................................137

12.4.1 Installing the E1/T1 Cables...................................................................................................................................137

12.4.2 Installing the FE/GE Ethernet Cables....................................................................................................................139

12.4.3 Installing FE/GE Fiber Optic Cables.....................................................................................................................140

12.5 Installing Signal Cables............................................................................................................................................142

12.5.1 (Optional) Installing a Monitoring Signal Cable Between Cascaded FAN 03C Assemblies................................142

12.5.2 (Optional) Installing Inter-BBU Signal Cables.....................................................................................................144

12.5.3 Installing a BBU Alarm Cable...............................................................................................................................148

12.6 InstallingRF Jumpers...............................................................................................................................................14912.7 (Optional) Installing CPRI Electrical Cables...........................................................................................................151

12.8 (Optional) Installing CPRI Fiber Optic Cables........................................................................................................154

13 Installation Checklist..............................................................................................................158

14 Powering On a Base Station..................................................................................................161

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1Changes in BTS3900 (Ver.D) InstallationGuide

This chapter describes the changes inBTS3900 (Ver.D) Installation Guide.

03 (2014-08-30)

This is the third commercial release.

Compared with Issue 02 (2014-07-30), this issue includes the following changes.

Topic Change Description

The whole document Changed information about the appearance of

the BTS3900 cabinet.

02 (2014-07-30)

This is the second commercial release.

Compared with Issue 01 (2014-04-30), this issue includes the following changes.


8.2 Installing the Base on the ESD Floor Changed installation information of the

support for an ESD floor.

01 (2014-04-30)

This is the first commercial release.

Compared with issue draft B (2014-02-28), no information is changed.

Draft B (2014-02-28)

This is a draft.

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Installation Guide 1 Changes in BTS3900 (Ver.D) Installation Guide



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Compared with issue draft A (2014-01-20), no information is added or deleted.

Compared with issue draft A (2014-01-20), this issue incorporates the following changes:


14 Powering On a Base Station Added descriptions of the status of the

indicators for CPRI ports.

Draft A (2014-01-20)

This is a draft.

Compared with the issues for the multimode base station version V100R008C00 and the single-

mode base station versions WCDMA-NodeB V200R015C00, GSM-BTS V100R015C00, and

eNodeB V100R006C00, this issue includes the following new information:l 7.2 Checking a BTS3900 AC Cabinet

l (Optional) Installing RRU Power Cables

l Installing EPU05A-02 Power Cables

Compared with the issues for the multimode base station version V100R008C00 and the single-

mode base station versions WCDMA-NodeB V200R015C00, GSM-BTS V100R015C00, and

eNodeB V100R006C00, this issue includes the following changes.


The whole document l Added the information about installation

of BTS3900 AC cabinets.

l Renamed all EPC6 connectors in this

document EPC4 connectors.

l Added the interconnection mode about

UMPT + UMPT for the inter-BBU signal

cable.

l Added the description of UBBP.

Compared with the issues for the multimode base station version V100R008C00 and the single-mode base station versions WCDMA-NodeB V200R015C00, GSM-BTS V100R015C00, and

eNodeB V100R006C00, no topic is deleted from this issue.

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Installation Guide 1 Changes in BTS3900 (Ver.D) Installation Guide



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2OverviewAbout This Chapter

Familiarize yourself with this information as well as the cabinet interior, application scenarios

of the cabinets, and relevant clearance requirements before installing the cabinets.

2.1 Components of BTS3900 Cabinets

This section describes module and board configurations in BTS3900 cabinets.

2.2 BTS3900(Ver.D) Configured with RFUs but Without RRUs

When a BTS3900 is configured with RFUs but without RRUs, the BTS3900 can have different

scenarios, including a single cabinet, cabinets installed side by side, stacked cabinets, or usingthe IMS06.

2.3 BTS3900(Ver.D) Configured with RFUs and RRUs

When a BTS3900 base station is configured with RFUs and RRUs, the BTS3900 can have

different scenarios, including a single cabinet, cabinets installed side by side, stacked cabinets,

or using an IMS06.

2.4 Installation Clearance and Layout Requirements

During the installation, you need to plan the space for future maintenance and cabling.

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2.1 Components of BTS3900 Cabinets

This section describes module and board configurations in BTS3900 cabinets.

Components of a BTS3900 (Ver.B) Cabinet

The following figure shows the components of a BTS3900 (Ver.B) cabinet.

Figure 2-1Components of a BTS3900 (Ver.B) cabinet

The following table lists the components in a BTS3900 (Ver.B) cabinet.

Table 2-1Components in a BTS3900 (Ver.B) cabinet

No. Component

Optional/Mandatory

MaximumQuantityin a SingleCabinet

Remarks

1 RFU

filler

panel

Optional - To ensure proper ventilation of the

cabinet, install a filler panel in each

vacant slot in the RFU subrack.

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No. Component

Optional/Mandatory


Remarks

2 RFU Mandatory 6 A radio frequency unit (RFU) modulates

and demodulates baseband signals and

RF signals, processes data, and

combines and divides signals. For

details, seeRFU Hardware

Description.

The BTS3900 (Ver.B) supports the

following RFUs: MRFU, DRFU,

GRFU, WRFU, WRFUa, and LRFU..

3 FAN Mandatory 1 A FAN dissipates heat from the cabinet.

The FAN is configured with the fanmonitoring unit type C (FMUC), which

monitors the fans and reports alarms.

4 Filler

panel for

the air

intake

vent

Mandatory 1 A filler panel is installed in the air intake

vent.

5 BBU Mandatory 1 A BBU processes baseband signals and

enables the base station to interact with

the base station controller. For details,seeBBU Hardware Description.

6 DCDU-

01

Mandatory 1 The direct current distribution unit-01

(DCDU-01) distributes DC power to

components in a cabinet.

7 Transmi

ssion

equipme

nt

Optional - 2 U user space is reserved here to house

the customer's transmission equipment.

8 EPS24S48100D

C

Mandatory 1 The EPS24S48100DC converts +24 VDC power into -48 V DC and supplies

the power to the DCDU-01.

9 EPS489

0

Mandatory 1 The EPS4890 converts 220 V AC single-

phase, 220 V AC three-phase, or 110 V

AC dual-live-wire power into -48 V DC

power and supplies the power to the

DCDU-01.

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NOTE

A BTS3900 -48 V DC cabinet can feed power into the customer's transmission equipment. The customer

equipment is able to work with an ambient temperature of 55oC or higher.

Components of a BTS3900 (Ver.C) Cabinet

The following figure shows the components of a BTS3900 (Ver.C) cabinet.

Figure 2-2Components of a BTS3900 (Ver.C) cabinet

The following table lists the components in a BTS3900 (Ver.C) cabinet.

Table 2-2Components in a BTS3900 (Ver.C) cabinet

No. Component

Optional/Mandatory

MaximumQuantityin a Single

Cabinet

Remarks

1 RFU

filler

panel


cabinet, a filler panel needs to be

installed in each vacant slot of the RFU

subrack.

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No. Component

Optional/Mandatory


Remarks

2 RFU Mandatory 6 An RFU modulates and demodulates

baseband signals and RF signals,

processes data, and combines and

divides signals. For details, seeRFU

Hardware Description.

The BTS3900 (Ver.C) supports the

following RFUs: MRFU, MRFUd,

MRFUe, DRFU, GRFU, WRFU,

WRFUa, WRFUd, WRFUe, LRFU,

LRFUe, CRFUd, and CRFUe..

3 FAN03B

Mandatory 1 A FAN 03B dissipates heat from thecabinet. The FAN 03B is configured

with the fan monitoring unit type E

(FMUE), which monitors the fans and

reports alarms.

4 Filler

panel for

the air

intake

vent


vent.

5 BBU Mandatory 1 A BBU processes baseband signals andenables the base station to interact with

the base station controller. For details,

seeBBU Hardware Description.

6 DCDU-

11A

Mandatory 1 The DCDU-11A distributes DC power

to components in a cabinet.

7 Transmi

ssion

equipme

nt



8 ETP481

50-A3

Mandatory 1 The EPS4890 converts 220 V AC single-

phase, 220 V AC three-phase, or 110 V

AC dual-live-wire power into -48 V DC

power and supplies the power to the

DCDU-11A.

NOTE



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Components of a BTS3900 (Ver.D) Cabinet

The following figure shows the components of a BTS3900 (Ver.D) cabinet.

Figure 2-3Components of a BTS3900 (Ver.D) cabinet

The following table lists the components in a BTS3900 (Ver.D) cabinet.

Table 2-3Components in a BTS3900 (Ver.D) cabinet

No. Component

Optional/Mandatory

MaximumQuantityin a Single

Cabinet

Remarks

1 RFU

filler

panel


cabinet, a filler panel needs to be

installed in each vacant slot of the RFU

subrack.

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No. Component

Optional/Mandatory


Remarks

2 RFU Mandatory 6 An RFU modulates and demodulates

baseband signals and RF signals,

processes data, and combines and

divides signals. For details, seeRFU

Hardware Description.

The BTS3900 (Ver.D) supports the

following RFUs: MRFU, MRFUd,

MRFUe, DRFU, GRFU, WRFU,

WRFUa, WRFUd, WRFUe, LRFU,

LRFUe, CRFUd, and CRFUe..

3 FAN03C

Mandatory 1 A FAN 03C dissipates heat from thecabinet. The FAN 03C is configured

with the fan monitoring unit type EA

(FMUEA), which monitors the fans and

reports alarms.

4 Filler

panel for

the air

intake

vent


vent.

5 BBU Mandatory 2 A BBU processes baseband signals andenables the base station to interact with

the base station controller. For details,

seeBBU Hardware Description.

If two BBUs are required, the second

BBU is configured in the 2 U user space

below the DCDU-12A.

6 DCDU-

12A

Mandatory 1 The DCDU-12A distributes DC power

to components in a cabinet.

7 BBU Optional - 2 U user space is reserved for installing

a BBU.

8 DCDU-

12B

Optional 1 For a BTS3900 configured with RFUs

and RRUs, a DCDU-12B is installed in

the 1 U space here to provide DC power

for RRUs.

9 Transmi

ssion

equipme

nt



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No. Component

Optional/Mandatory


Remarks

10 Filler

panel

Optional - A filler panel is installed in each slot in

which no PSU(R4850G2) is installed.

11 PSU

(R4850

G2)

Mandatory 5 A PSU(R4850G2) converts 110 V AC

or 220 V AC power into -48 V DC

power.

12 PMU

11A

Mandatory 1 A PMU 11A manages the power system

and storage batteries, monitors power

distribution, and reports alarms.

13 EPU05A

-02

Subrack

Mandatory 1 An EPU05A-02/04 converts 220 V AC

single- or three-phase power into -48 V

DC power and feeds the power into the

DCDU-12A and DCDU-12B.

NOTE



2.2 BTS3900 (Ver.D) Configured with RFUs but WithoutRRUs

When a BTS3900 is configured with RFUs but without RRUs, the BTS3900 can have different

scenarios, including a single cabinet, cabinets installed side by side, stacked cabinets, or using

the IMS06.

BTS3900 Configured with Only BTS3900 Cabinets

The following table lists the application scenarios for a BTS3900 that uses various BTS3900

cabinets and is configured with RFUs but without RRUs.

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Scenario

Numberof

BBUs

ApplicationMode

MaximumNumber of RF

Modules

Illustration Applicable Cabinet

Sin

gle

cabi

net

1 Single-, dual-,

quadruple-, and

triple-mode

base stations

6 RFUs The application

scenarios are

shown by

illustrations 1 and

2 in Figure 2-4.

l One BTS3900 DC

cabinet

l One BTS3900 AC

cabinet

2 Triple- and

quadruple-

mode base

station


scenarios are

shown by

illustrations 3 and4 in Figure 2-4.

Cab

inet

s

inst

alle

d

side

by

side

1 Single-, dual-,

quadruple-, and

triple-mode

base stations


scenarios are

shown by

illustrations 1 and

2 in Figure 2-5.

l Two BTS3900 DC

cabinets

l 1 BTS3900 AC cabinet

+1 BTS3900 DC cabinet

2 Triple- and

quadruple-

mode base

station


scenarios are

shown by

illustrations 3 and4 in Figure 2-5.

Stac

ked

cabi

nets

1 Single-, dual-,

quadruple-, and

triple-mode

base stations


scenario is shown

by illustration 1

in Figure 2-6.

Two BTS3900 DC cabinets

2 Triple- and

quadruple-

mode base

station


scenario is shown

by illustration 2

in Figure 2-6.

NOTE

l A BTS3900 cabinet is configured with one BBU by default and can be configured with a maximum of

two BBUs whose power consumption cannot exceed 1000 W. This principle applies to new site

deployment or capacity expansion.

l When cabinets are installed side by side or stacked, it is recommended that BBU 1 and BBU 0 be

installed in the same cabinet.

l One BTS3900 AC cabinet consists of one BTS3900 DC cabinet and one IMS06.

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Figure 2-4Single cabinet

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Figure 2-5Cabinets installed side by side

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Figure 2-6Stacked cabinets

BTS3900 Configured with BTS3900 Cabinets and an IMS06

The following table lists the application scenarios for a BTS3900 that uses various BTS3900

cabinets and an IMS06 and is configured with RFUs but without RRUs.

Scenario Number ofBBUs

ApplicationMode

MaximumNumber ofRFModules

Illustration Description

1 BTS3900

AC cabinet+1

BTS3900 DC

cabinet+1

IMS06

2 Triple-

mode

base

station


scenario is

shown by

illustration 1 in

Figure 2-7.

The IMS06 is used to

house 100 Ah

storage batteries,

which provides low-

capacity backup

power.

1 BTS3900

AC cabinet+1

IMS06

2 Triple-

mode

base

station


scenario is

shown by

illustration 2 in

Figure 2-7.

The IMS06 is used to

house transmission

equipment.

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NOTICEThe IMS06 cannot be stacked on the BTS3900 cabinet. Otherwise, the heat dissipation holes on

the top of the BTS3900 cabinet will be blocked.

NOTE

When an IMS06 is configured with storage batteries, the power consumption of a BTS3900 cannot exceed

10,000 W. If the power consumption exceeds 10,000 W, large-capacity battery packs need to be added.

Figure 2-7BTS3900 configured with BTS3900 cabinets and an IMS06

2.3 BTS3900 (Ver.D) Configured with RFUs and RRUs

When a BTS3900 base station is configured with RFUs and RRUs, the BTS3900 can have

different scenarios, including a single cabinet, cabinets installed side by side, stacked cabinets,

or using an IMS06.

BTS3900 Not Configured with an IMS06

The following table describes the application scenarios for a BTS3900 base station that uses

various BTS3900 cabinets and is configured with RFUs and RRUs.

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Scenario

Numberof

BBUs

ApplicationMode

MaximumNumber ofRF Modules

Illustration ApplicableCabinet

Sin

gle

cabi

net

1 Single-,

dual-, triple-,

and

quadruple-

mode base

stations

6 RFUs+6

RRUs

Figure 2-8shows the

application scenario.

l One BTS3900

DC cabinet

l One BTS3900

AC cabinet

2 Triple- and

quadruple-

mode basestations

6 RFUs+9

RRUs

The application scenario

is shown in Figure 2-9

and Figure 2-10.

Cab

inet

s

inst

alle

d

side

by

side

1 Single-,

dual-, triple-,

and

quadruple-

mode base

stations

12 RFUs+6

RRUs

Figure 2-11shows the


Two BTS3900

DC cabinets

2 Triple- and

quadruple-

mode basestations

12 RFUs+9

RRUs



Stac

ked

cabi

nets

1 Single-,

dual-, triple-,

and

quadruple-

mode base

stations

12 RFUs+6

RRUs



2 Triple- and

quadruple-

mode basestations

12 RFUs+9

RRUs



When a BTS3900 (Ver.D) is configured with RFUs and RRUs, a DCDU-12B is installed in the

BTS3900 cabinet to distribute power to RRUs.

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Figure 2-8One BTS3900 DC cabinet (one BBU)

Figure 2-9One BTS3900 DC cabinet (two BBUs)

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Figure 2-10One BTS3900 AC cabinet (two BBUs)

Figure 2-11Two BTS3900 DC cabinets installed side by side (one BBU)

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Figure 2-12Two BTS3900 DC cabinets installed side by side (two BBUs)

Figure 2-13Two BTS3900 DC cabinets stacked together (one BBU)

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Figure 2-14Two BTS3900 DC cabinets stacked together (two BBUs)

BTS3900 Configured with an IMS06

The following table lists the application scenarios where a BTS3900 base station uses an

BTS3900 cabinet and an IMS06 and is configured with RFUs and RRUs.

Scenario Number ofBBUs

ApplicationMode

MaximumNumber ofRFModules

Illustration Description

1 BTS3900

AC+1 IMS06

2 Triple-

andquadrupl

e-mode

base

stations

6 RFUs+9

RRUs

Figure 2-13

shows theapplication

scenario.

An IMS06 houses

100 Ah storagebatteries, which

provide low-

capacity backup

power.

NOTICEThe IMS06 cannot be stacked on the BTS3900 cabinet. Otherwise, the heat dissipation holes on

the top of the BTS3900 cabinet will be blocked.

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NOTE

When an IMS06 is configured with storage batteries, the power consumption of a BTS3900 cannot exceed

10,000 W. If the power consumption exceeds 10,000 W, large-capacity battery packs need to be added.

Figure 2-15BTS3900 configured with an IMS06 (1 BTS3900 AC+1 IMS06)

2.4 Installation Clearance and Layout Requirements

During the installation, you need to plan the space for future maintenance and cabling.

Installation Clearance Requirements

Clearance requirements of a BTS3900 cabinet are as follows:

l A BTS3900 DC cabinet can be installed with its rear flush against a wall, whereas a

minimum of 100 mm (3.94 in.) space must be reserved behind the rear of a BTS3900 AC

cabinet.

l The left side of the cabinet can be against a wall. Reserve a minimum of 300 mm (11.81

in.) clearance on the right side for installing noise reduction modules later.

l Retain a minimum of 800 mm (31.50 in.) in front of the cabinet for maintenance.

l Retain a minimum of 200 mm (7.87 in.) between the top of the cabinet and the ceiling for

cabling.

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The following figure shows the clearance requirements of cabinets in the following installation

scenarios: a single cabinet is installed alone, two cabinets are installed side by side, or two

cabinets are stacked.

Figure 2-16Clearance requirements for a BTS3900 DC cabinet

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Figure 2-17Clearance requirements for a BTS3900 AC cabinet

Layout Requirements

Layout requirements of BTS3900 cabinets are as follows:

l Install the cabinets at a position nearest to the feeder window to minimize the feeder length.

l Install the cabinets in one row in one equipment room to facilitate cabling.

l No space is required between cabinets and user equipment in the same row.

The following figure shows the layout requirements of BTS3900 cabinets.

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Figure 2-18Layout requirements

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3Installation PreparationsAbout This Chapter

This chapter lists the tools and instruments that must be obtained before the installation. It also

specifies the skills that the onsite personnel must have.

3.1 Documents

Before the installation, obtain the following documents:

3.2 Tools and Instruments

This section lists the tools and instruments that must be obtained before installation.

3.3 Requirements for Onsite Personnel

Onsite personnel must be qualified and trained. Before performing any operation, onsite

personnel must be familiar with correct operation methods and safety precautions.

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3.1 Documents



l Safety Precautions

l Installation Reference

l 3900 Series Base Station Hardware Description

l 3900 Series Base Station Cables

l BBU Hardware Description

l RFU Hardware Description

A BTS3900 (Ver.D) cabinet can be stacked on an IMS06, thereby meeting power distribution

and transmission requirements. For details, see the following document:

l IMS06 Installation Guide

3.2 Tools and Instruments

This section lists the tools and instruments that must be obtained before installation.

Marker Phillips screwdriver (M3 to

M6)

Flat-head screwdriver (M3 to

M6)

Diagonal pliers

32 mm (1.26 in.)

combination wrench

Socket wrench Torque wrench

Power cable crimping tool RJ45 crimping tool Cable cutter

Rubber mallet Soldering iron Wire stripper

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Hammer drill (16) Heat gun Level

Multimeter Measuring tape Vacuum cleaner

ESD wrist strap ESD gloves Torque screwdriver

Gloves Utility knife Hydraulic pliers

Torx screwdriver - -

3.3 Requirements for Onsite Personnel

Onsite personnel must be qualified and trained. Before performing any operation, onsitepersonnel must be familiar with correct operation methods and safety precautions.

Before the installation, pay attention to the following:

l The customer's technical engineers must be trained by Huawei and be familiar with the

proper installation and operation methods.

l The number of onsite personnel depends on the engineering schedule and installation

environment. Generally, three to five onsite personnel are necessary.

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4Unpacking CheckUnpack and check the delivered equipment to ensure that all the materials are included and intact.

Context

CAUTION

The gravity center of some cabinets is in the front, for example, the BTS3900AL, IBBS700T

and IBBS300T . Therefore, avoid toppling of the cabinet when the door of the cabinet is opened,

especially when you unpack the cabinet or before it has been secured onto a base.

NOTICE

l Power on a cabinet or BBU within seven days after unpacking it.

l Power on an RRU within 24 hours after unpacking it.

NOTE

When transporting, moving, or installing the equipment, components, or parts, you must:

lPrevent them from colliding with doors, walls, shelves, or other objects.

l Wear clean gloves, and avoid touching the equipment, components, or parts with bare hands, sweat-

soaked gloves, or dirty gloves.

Procedure

Step 1 Check the total number of articles in each case according to the packing list.

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If... Then...

The total number tallies with the packing

list

Go to Step 2.

The total number does not tally with the

packing list

Find out the cause and report any missing

articles to the local Huawei office.

Step 2 Check the exterior of the packing case.

If... Then...

The outer packing case is intact Go to Step 3.

The outer packing is severely damaged or

soaked

Find out the cause and report the situation to

the local Huawei office.

Step 3 Check the type and quantity of the equipment in the cases according to the packing list.

If... Then...

Types and quantity of the articles tally with

those on the packing list

Sign thePacking Listwith the customer.

There are any goods missing, incorrectly

delivered, or damaged

Report the situation to the local Huawei office.

CAUTION

To protect the equipment and prevent damage to the equipment, you are advised to keep the

unpacked equipment and packing materials indoors, take photos of the stocking environment,

packing case or carton, packing materials, and any rusted or eroded equipment, and then file the

photos.

----End

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5Obtaining the ESNThe electronic serial number (ESN) is a unique identifier of a NE. Record the ESN of the base

station before the installation for future commissioning.

Procedure

Step 1 Record the ESN on the BBU.

l If there is no label on the FAN unit of the BBU, the ESN is printed on a mounting ear of the

BBU, as shown in Figure 5-1. Record the ESN and base station information.

l If there is a label on the FAN unit of the BBU, the ESN is printed on the label and a mounting

ear of the BBU, as shown in Figure 5-2. Remove the label and record the base station

information on the label printed with Site.

NOTE

The base station information includes the name, ID, and location of the base station.

Figure 5-1ESN position (1)

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Figure 5-2ESN position (2)

Step 2 Report the ESN and base station information to the base station commissioning personnel orremove the label and give it to the base station commissioning personnel.

NOTE

For base stations configured with multiple BBUs, record the ESNs on all BBUs and submit them to the

personnel responsible for the base station commissioning.

----End

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6Installation ProcessBefore the BTS3900 cabinets are delivered, boards inside the cabinets have been installed. You

only need to install the cabinet and cables onsite. Some optional components may also need to

be installed based on onsite requirements.

The following figure shows the installation process.

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Figure 6-1Installation process

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7Checking Installed Modules and CablesAbout This Chapter

Modules and cables in the cabinet have been installed before delivery. You need to check whether


7.1 Checking a BTS3900 DC Cabinet

Modules and cables have been installed in a BTS3900 DC cabinet before delivery. You need to

check whether the modules and cables are installed securely.

7.2 Checking a BTS3900 AC Cabinet

Modules and cables in the BTS3900 AC cabinet have been installed. You need to check whetherthe modules and cables are installed securely.

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No. Cable One End The Other End

Connector InstallationPosition


P6 FAN 03C

power cable

3V3 connector -48V port on

the FAN 03C

EPC4

connector

LOAD6 port

on the

DCDU-12A

P7 and

P8

BBU power

cables


the UPEU

EPC4

connector

LOAD7 and

LOAD8 ports

on the

DCDU-12A

Step 3 Check whether the signal cables in the cabinet are routed correctly and connected securely

according to the following figure and table.

Figure 7-2Signal cables installed in the cabinet

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Table 7-2List of the signal cables installed in the cabinet


Connector Installation

Position

Connector Installation

Position

S1 ELU signal

cable

RJ45

connector

SENSOR port

on the FAN

03C

RJ45

connector

ELU

S2 FMUEA-

BBU

monitoring

signal cable

RJ45

connector

COM_IN port

on the FAN

03C

RJ45

connector

MON0 port on

the UPEU

NOTE

If no BBU is

installed in the

cabinet, this

cable should

be bound to

the right side

of the cabinet.

Step 4 Check that the CPRI cables in the cabinet are routed correctly and connected securely. For detailsabout how to connect and disconnect CPRI cables, see Inserting and Removing CPRI Cables.

----End

7.2 Checking a BTS3900 AC CabinetModules and cables in the BTS3900 AC cabinet have been installed. You need to check whether


Procedure

Step 1 Check whether the modules are installed securely in the cabinet, and tighten any loose screw.

Step 2 Check that the equipotential cables are installed securely, the power cables are correctlyconnected, and the screws are tightened according to the following table and figure.

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Figure 7-3Equipotential cables and power cables installed inside the cabinet

Table 7-3Equipotential cables and power cables installed inside the cabinet




P0 to

P5

RFU power

cable

3V3 connector PWR port on

an RFU

EPC4

connector

One of the

LOAD0 to

LOAD5 ports

on the

DCDU-12A

P6 FAN 03C

power cable


the FAN 03C

EPC4

connector

LOAD6 port

on the

DCDU-12A

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P7 and

P8

BBU power

cable


the UPEU

EPC4

connector

LOAD7 and

LOAD8 ports

on the

DCDU-12A

P9 and

P10

DCDU-12A

power cable

OT terminal

(M6)

RTN(+) and

NEG(-)

terminals on

the

DCDU-12A

OT terminal

(M6)

RTN(+) and

NEG(-)

terminals near

RFC_1 and

RFC_2 on the

EPU05A-02

G0 Equipotentia

l cable

between the

BTS3900

and IMS06

OT terminal

(M6)

Ground bar in

the BTS3900

cabinet

OT terminal

(M6)

Ground bar in

the IMS06

G1 Equipotentia

l cable

between the

EPU and

IMS06

OT terminal

(M6)

Ground bar in

the EPU

OT terminal

(M6)

Ground bar in

the IMS06

Step 3 Check that the signal cables are installed securely and the screws are tightened according to thefollowing table and figure.

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Figure 7-4Signal cables installed in the cabinet

Table 7-4Signal cables installed in the cabinet




S1 ELU signal

cable

RJ45

connector

SENSOR port

on the FAN

03C

RJ45

connector

ELU

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8Installing a BaseAbout This Chapter

A BTS3900 cabinet can be installed on a base. The base can be installed either on a concrete

floor or ESD floor according to the equipment room conditions and customer's requirements.

8.1 Installing a Base on the Concrete Floor

This section describes the procedure and precautions for installing a base on the concrete floor.

8.2 Installing the Base on the ESD Floor

This section describes the procedure and precautions for installing a base on the ESD floor.

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8.1 Installing a Base on the Concrete Floor

This section describes the procedure and precautions for installing a base on the concrete floor.

Procedure

Step 1 Determine the holes for installing the cabinet according to the positioning holes on the marking-off template, as shown in the following figure.

Figure 8-1Positioning the base

(1) Anchor point (2) Marking-off template (3) Concrete floor

Step 2 Drill holes at the anchor points and insert expansion bolt assemblies in the holes, as shown inthe following figure.

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Figure 8-2Drilling a hole and inserting an expansion bolt assembly

(1) M12x60 bolt (2) Spring washer (3) Flat washer (4) Expansion tube

1. Use a hammer drill with a 16 drill bit to drill holes with a depth ranging from 55 mm

(2.17 in.) to 60 mm (2.36 in.).

CAUTION

Take proper safety measures to protect your eyes and respiratory tract against the dust

before drilling holes.

NOTE

Generally, the concrete floor is solid and smooth. Therefore, you can use the center punch to help

locate the drill bit. If the conditions of the floor allow direct drilling, skip this step.

2. Use a vacuum cleaner to clear the dust out from inside and around the holes, and measure

the distances between holes. If any of the hole is beyond the acceptable range, mark a new

anchor point and drill a new hole.

3. Tighten an expansion bolt slightly and place it vertically into each hole.

4. Hit the expansion bolt with a rubber mallet until the expansion tube completely enters the

hole.

5. Remove the M12x60 bolt, spring washer, and flat washer in sequence.

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CAUTION

After dismantling the expansion bolt assembly, ensure that the top of the expansion tube

is level with the concrete floor. Otherwise, the cabinet cannot be installed on the concretefloor evenly and securely.

Step 3 Install the base and level it.

1. Place the insulation plate and the base on the floor in sequence. Align holes on the base

with those on the insulation plate and those for inserting expansion bolt assemblies on the

floor. Insert four M12x60 expansion bolts into the holes, and partially tighten them, as

shown in the following figure.

Figure 8-3Preinstalling the base on the floor

(1) M12x60 bolt (2) Spring washer (3) Flat washer

(4) Insulation washer (5) Insulation plate -

2. Measure and level the base.

Place a level on the base and observe the position of the mercury, as shown in the following

figure. If the base is not level, use leveling bolts to level it.

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Figure 8-4Checking the base levelness

(1) Leveling bolts (2) Level

3. Use a socket wrench to fasten the M12x60 bolts in a diagonal sequence to secure the base

on the floor, and tighten the bolts to 45 Nm (398.25 lbfin.), as shown in the following

figure.

Figure 8-5Securing the base on the floor

Step 4 Measure the insulation between the base and expansion bolts.1. Set the multimeter to the megohm scale (M).

2. Measure the resistance between the leveling bolt and the expansion bolt, as shown in the

following figure.

Figure 8-6Measuring the resistance between the leveling bolt and the expansion bolt

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l If the resistance is lower than 5 megohms, the base is not insulated from the ground.

Go to Step 4.3.

l If the resistance is higher than 5 megohms, the base is insulated from the ground.

3. Remove the expansion bolt assemblies and check whether the insulation washers are

missing or damaged.

l If yes, reinstall the expansion bolt assemblies and re-level the base.

l If no, check whether the multimeter works properly and whether the setting is correct.

----End

8.2 Installing the Base on the ESD Floor

This section describes the procedure and precautions for installing a base on the ESD floor.

Context

The following figure shows the support for installing the ESD floor.

Figure 8-7Support for installing the ESD floor

(1) Mounting holes for the ESD floor (2) Support (3) Mounting holes for the concretefloor

There are three models of ESD floor supports, all of which are adjustable. The heights of ESD

floors supported by the three models are listed in the following table.

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Table 8-1Heights of the two types of supports

Component Applicable Height Remark

Model I 200 (7.87 in.)H270 (10.63 in.) l The height can be adjusted

within the adjustable range.l When the height of the ESD floor

is the same as the maximum or

minimum value of the adjustable

ranges, the model with a smaller

adjustable range is preferred. For

example, when the height of the

ESD floor is 410 mm (16.14 in.),

model II is preferentially

selected.

Model II 270 (10.63 in.)H410 (16.14

in.)

Model III 410 (16.14 in.)H700 (27.56

in.)

NOTE

The height of an ESD floor is the spacing between the concrete floor and the upper surface of the ESD

floor.

Procedure

Step 1 Determine the installation position for the base on the ESD floor. For details, seeInstalling aBase on the Concrete FloorstepStep 1.

Step 2 Drill holes on the ESD floor.

1. Use a hammer drill with bit 16 to drill holes at the anchor points. The holes should penetrate

the ESD floor, as shown in the following figure.

Figure 8-8Drilling a hole on the ESD floor

(1) ESD floor

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CAUTION



2. Use a vacuum cleaner to clear the dust inside and around the holes. If the inter-hole spacing

is too wide or too narrow, locate and drill holes again.

Step 3 Position the support.

1. Place the support under the ESD floor. Use bolts to fix the support to the ESD floor

temporarily, as shown in the following figure.

Figure 8-9Fixing the support to the ESD floor

(1) Mounting holes on the ESD floor (2) ESD floor (3) Mounting holes for the concrete floor

2. Use a ruler to measure the distance between the concrete floor and the lower surface of the

ESD floor. Adjust the support to a specified height based on the measurement result, ensure

that the top of the support is leveled with the lower surface of the ESD floor, and use a

socket wrench to tighten the nuts on the support to 45 Nm (33.19 lbfft), as shown in the

following figure.

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Figure 8-10Adjust the support's height

3. According to the mounting holes in the concrete floor, mark the positions for installing

expansion bolt assemblies, as shown in the following figure.

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Figure 8-11Marking the positions for installing expansion bolt assemblies

(1) Mounting hole in the

concrete floor

(2) Concrete floor

4. Use a measuring tape to measure the inter-hole spacing, and ensure that the center-to-center

distances between the holes are consistent.

Step 4 Drill holes at the anchor points on the concrete floor. Then install the expansion bolt assembly.as shown in the following figure.

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(1) M12x60 bolt (2) Spring washer (3) Flat washer (4) Expansion tube

Step 5 Secure the support for installing the ESD floor.

Use M12x60 bolts, spring washers, and flat washers to secure the support for installing the ESD

floor on the concrete floor, and tighten the bolts to 45 Nm (398.25 lbfin.), as shown in the

following figure.

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Figure 8-13Securing the ESD floor

(1) M12x60 bolts (2) Spring washer (3) Flat washer

Step 6 Remove the bolts that are used to temporarily fix the support instep 3.a.

Step 7 Install the base and level it.

1. Place the insulation plate and the base on the ESD floor in sequence. Align holes on the

base with those on the insulation plate and those for inserting expansion bolt assemblies

on the ESD floor. Use a socket wrench to fasten the M12x80 bolts in a diagonal sequence

to secure the base on the ESD floor, and tighten the bolts to 45 Nm (398.25 lbfin.), as

shown in the following figure.

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Figure 8-14Securing the base on the ESD floor

(1) M12x80 bolt (2) Spring washer (3) Flat washer

(4) Insulation washer (5) Insulation plate -

2. Place a level on the base and observe the position of the mercury, as shown in the following

figure. If the base is not level, use the leveling bolts to level it.

NOTE

Screwing the bolts clockwise will raise the base, and screwing the bolts counterclockwise will lower

the base.

Figure 8-15Checking the base levelness

(1) Leveling bolts (2) Level

Step 8 Measure the insulation between the base and expansion bolts.

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1. Set the multimeter to the megohm scale (M).

2. Measure the resistance between the leveling bolt and the expansion bolt, as shown in the

following figure.

Figure 8-16Measuring the resistance between the leveling bolt and the expansion bolt

l If the resistance is lower than 5 megohms, the base is not insulated from the ground.

Go to Step 8.3.l If the resistance is higher than 5 megohms, the base is insulated from the ground.


missing or damaged.

l If yes, reinstall the expansion bolt assemblies and re-level the base.


----End

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9Installing the CabinetAbout This Chapter

A BTS3900 cabinet can be installed alone, side by side with another BTS3900 cabinet, or stacked

on another BTS3900 cabinet. This section describes the procedure for installing the BTS3900

(Ver.D) cabinets in the preceding modes. The procedures for installing the BTS3900(Ver.B),

BTS3900(Ver.C), and BTS3900(Ver.D) cabinets are the same.

9.1 Installinga Cabinet Without a Base

This section describes the procedure and precautions for installing a BTS3900 DC cabinet

without a base on the concrete floor. BTS3900 AC cabinet should not be installed without a base

on the concrete floor.

9.2 Installing a Cabinet on a Base

This section describes the procedure and precautions for installing a BTS3900 AC or DC cabinet

on a base.

9.3 InstallingCabinets Side by Side

This section describes the procedure and precautions for installing two BTS3900 cabinets side

by side. The combination of One BTS3900 (Ver.D) AC cabinet and one BTS3900 (Ver.D) DC

cabinet doesn't support this installation.

9.4 Stacking Two Cabinets

This section describes the procedure and precautions for stacking two BTS3900 cabinets.

BTS3900 (Ver.D) AC cabinet should not be stacked.

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9.1 Installing a Cabinet Without a Base

This section describes the procedure and precautions for installing a BTS3900 DC cabinetwithout a base on the concrete floor. BTS3900 AC cabinet should not be installed without a base

on the concrete floor.

Context

To facilitate operations, you can remove the cabinet door and then install the cabinet.

Procedure

Step 1 Take the marking-off template out from the position 3 U above the bottom of the cabinet, and

determine the holes for installing the cabinet according to the anchor points on the marking-offtemplate, as shown in the following figure.

Figure 9-1Positioning the cabinet

(1) Anchor point (2) Marking-off template (3) Concrete floor

Step 2 Drill holes at the anchor points and insert expansion bolt assemblies in the holes, as shown in

the following figure.

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(1) M12x80 bolt (2) Spring washer (3) Flat washer (4) Cushion collar (5) Expansion tube

1. Use a hammer drill with a 16 drill bit to drill holes with a depth ranging from 55 mm

(2.17 in.) to 60 mm (2.36 in.).

CAUTION



NOTE

Generally, the concrete floor is solid and smooth. Therefore, you can use the center punch to help

locate the drill bit. If the conditions of the floor allow direct drilling, skip this step.

2. Use a vacuum cleaner to clear the dust out from inside and around the holes, and measure

the distances between holes. If any of the hole is beyond the acceptable range, mark a new

anchor point and drill a new hole.

3. Tighten an expansion bolt slightly and place it vertically into each hole.

4. Hit the expansion bolt with a rubber mallet until the expansion tube completely enters the

hole.

5. Remove the M12x80 bolt, spring washer and flat washer in sequence.

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CAUTION

After dismantling the expansion bolt assembly, ensure that the top of the expansion tube

is level with the concrete floor. Otherwise, the cabinet cannot be installed on the concretefloor evenly and securely.

6. Remove and dispose of the cushion collar. Then take out the insulation washer from the

accessory bag and put it on the expansion bolt with the flat side upwards, as shown in the

following figure.

Figure 9-3Putting the insulation washer on the expansion bolt

Step 3 Move the cabinet onto the installation holes, place the expansion bolt assemblies into the holes,and partially tighten them, as shown in the following figure.

CAUTION

The cabinet is heavy so that two persons are required to move it.

Figure 9-4Installing the cabinet

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Step 4 Use a level to check the levelness of the cabinet, as shown in the following figure. If the cabinetis not level, adjust the leveling bolts.

NOTE

Screwing the bolts clockwise will raise the cabinet, and screwing the bolts counterclockwise will lower the

cabinet.

Figure 9-5Checking the levelness of the cabinet

Step 5 Use a socket wrench to fasten the cabinet in a diagonal sequence onto the concrete floor with atorque of 45 Nm (398.28 lbfin.), as shown in the following figure.

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Figure 9-6Securing the cabinet

Step 6 Check the insulation between the cabinet and expansion bolt assemblies.

1. Set the multimeter to the megohm scale (M).

2. Measure the resistance between the cabinet and the expansion bolt assemblies, as shown

in the following figure.

Figure 9-7Measuring the resistance

(1) Expansion bolt assembly (2) Ground bar on the cabinet

NOTE

Measure the resistance between the ground bar on the cabinet and the expansion bolt assemblies.

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l If the resistance is lower than 5 M, the cabinet is not insulated from the ground. Go

to 7.c.

l If the resistance is higher than 5 M, the cabinet is insulated from the ground.


missing or damaged.

l If yes, reinstall the expansion bolt assemblies and re-level the cabinet.


----End

9.2 Installing a Cabinet on a Base

This section describes the procedure and precautions for installing a BTS3900 AC or DC cabinet

on a base.

Context

To facilitate operations, you can remove the cabinet door and then install the cabinet.

Procedure

l Install a BTS3900 DC cabinet on a base.

1. Stand the cabinet, place the cabinet on the base, and push the cabinet until its rear

aligns with the rear of the base.

CAUTION


2. Use a torque wrench to secure the two M12x50 bolts in the front of the cabinet to 45

Nm (398.28 lbfin.), as shown in the following figure.

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CAUTION


3. Install the fixture block with the M12x60 expansion bolt onto the front of the cabinet,

and use a socket wrench to tighten the bolt to 45 Nm (398.2 lbfin), as shown in the

following figure.

Figure 9-10Installing a BTS3900 AC cabinet

----End

9.3 Installing Cabinets Side by Side

This section describes the procedure and precautions for installing two BTS3900 cabinets side

by side. The combination of One BTS3900 (Ver.D) AC cabinet and one BTS3900 (Ver.D) DC

cabinet doesn't support this installation.

Procedure

Step 1 Remove the connection plates on the top of the cabinets, as shown in the following figure.

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Figure 9-11Removing the connection plates

Step 2 Install the connection plates in the way shown in the following figure, and then use a torquescrewdriver to tighten the M5 screw to 2 Nm (17.7 lbfin.), as shown in the following figure.

Figure 9-12Installing the connection plates

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9.4 Stacking Two Cabinets

This section describes the procedure and precautions for stacking two BTS3900 cabinets.

BTS3900 (Ver.D) AC cabinet should not be stacked.

Procedure

Step 1 Remove the screws and connection plates from the top of the lower cabinet, and install themounting blocks on the top rear of the cabinet. Then use a socket wrench to secure the bolts to

45 Nm (398.28 lbfin.). as shown in the following figure. The mounting block is delivered with

the cabinet.

Figure 9-13Removing the screws and connection plates

(1) M12 screw (2) Connection plate (3) Mounting block

Step 2 Remove the cover plate from the top of the upper cabinet, as shown in the following figure.

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Figure 9-14Removing the cover plate

Step 3 Place one cabinet on the top of the other cabinet, and push the upper cabinet until the two cabinetsare aligned in the rear. Use a socket wrench to secure the front two M12x55 bolts to 45 Nm

(398.28 lbfin.). The following figure shows the BTS3900 cabinets installed in stacking mode.

Figure 9-15Securing the cabinet

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10Installing a PGND Cable and anEquipotential Cable

A PGND cable connects a PGND screw in a cabinet and a PGND bar to ensure proper grounding

of the cabinet. An equipotential cable connects PGND screws on different cabinets to ensure the

equipotential bonding between the cabinets.

Context

The following table lists the specifications of a PGND cable and an equipotential cable.

Table 10-1Specifications of a PGND cable and an equipotential cable

Cable One End The Other End Remarks

PGND cable OT terminal (M8) OT terminal (M8) Green and yellow

cable

l 1x160 A: 25

mm2(0.039 in.2)

l 2x80 A: 16 mm2

(0.025 in.2)

Equipotential cable OT terminal (M6) OT terminal (M6) Green and yellow

cable with a cross-

sectional area of 16mm2(0.025 in.2)

Procedure

l Install a PGND cable.

1. Cut the cable to a length suitable for the actual cable route.

2. Add OT terminals at each end of the cable according to the instructions in Assembling

the OT Terminal and the Power Cabl