TP48200A Installation Guide(V100R008C01_Draft B)(PDF)-En

TP48200A V100R008C01

Installation Guide Issue

Draft B

Date

2014-01-20

HUAWEI TECHNOLOGIES CO., LTD.

Copyright © Huawei Technologies Co., Ltd. 2014. All rights reserved. No part of this document may be reproduced or transmitted in any form or by any means without prior written consent of Huawei Technologies Co., Ltd.

Trademarks and Permissions and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd. All other trademarks and trade names mentioned mentioned in this document are the property of of their respective respective holders. holders.

Notice The purchased products, services and features are stipulated by the contract made between Huawei and the customer. All or part of the products, services and features described in this document document may not be within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information, information, and recommendations in this document are provided "AS IS" without warranties, guarantees or representations of any kind, either express or implied. The information in this document is subject to change without notice. Every effort has been made in the preparation of this document to ensure accuracy of the contents, but all statements, information, and recommendations recommendations in this document do not constitute a warranty of any kind, express or implied.

Huawei Technologies Co., Ltd. Address:

Huawei Industrial Industrial Base Bantian, Longgang Shenzhen 518129 People's Republic of China

Website:

http://www.huawei.com

Email:

[email protected]

Issue Draft B (2014-01-20)

Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

i

Copyright © Huawei Technologies Co., Ltd. 2014. All rights reserved. No part of this document may be reproduced or transmitted in any form or by any means without prior written consent of Huawei Technologies Co., Ltd.

Trademarks and Permissions and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd. All other trademarks and trade names mentioned mentioned in this document are the property of of their respective respective holders. holders.

Notice The purchased products, services and features are stipulated by the contract made between Huawei and the customer. All or part of the products, services and features described in this document document may not be within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information, information, and recommendations in this document are provided "AS IS" without warranties, guarantees or representations of any kind, either express or implied. The information in this document is subject to change without notice. Every effort has been made in the preparation of this document to ensure accuracy of the contents, but all statements, information, and recommendations recommendations in this document do not constitute a warranty of any kind, express or implied.

Huawei Technologies Co., Ltd. Address:

Huawei Industrial Industrial Base Bantian, Longgang Shenzhen 518129 People's Republic of China

Website:

http://www.huawei.com

Email:

[email protected]



i

TP48200A Installation Guide

About This Document

About This Document Overview This document document describes the procedure pro cedure for installing the cabinet, boards, modules, and cables when a DBS3900 uses a TP48200A cabinet. It also provides a hardware installation checklist.

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

Product Name

Product Version

DBS3900

V100R008C01 The mapping single-mode base station version is: eNodeB: V100R006C01

Intended Audience This document is intended for: l

BTS installation personnel

Organization 1 Change History

This chapter describes the changes in different document versions. 2 Preparing for Installation

This section describes the tools and meters that need to be available before the installation. It also describes the skills and qualifications that the installation engineers must possess. 3 Information to Be Known Before the Installation Issue Draft B (2014-01-20)


ii


About This Document

Familiarize yourself with this information as well as the cabinet interior and relevant space requirements before installing the cabinets. 4 Installing Procedure

In this scenario, the TP48200A, components in the TP48200A, and related cables must be installed onsite. In addition, optional components may be required according to the onsite condition. 5 Checking Installed Components and Cables

Components and cables in the cabinet have been installed before delivery. You need to check whether the components and cables are installed securely. 6 Installing the Cabinet

This section describes the procedures and precautions to be taken for installing the cabinet. 7 Installing a PGND Cable

A PGND cable connects the PGND screws on the cabinet and the ground bar to ensure proper grounding of the cabinet. 8 Installing Components

This section describes the procedure for installing components of the TP48200A. 9 Installing Cables

This section describes how to install cables for the cabinet and other mandatory components. 10 Installation Checklist

After the cabinets and devices are installed, you need to check the installation items, installation environment, and cable-related items. 11 Powering On a Base Station

This section describes how to power on a base station and handle power-on failures. 12 Follow-up Operations

This chapter describes the operations that need to be performed after the installation, which include sealing the cable outlets on the cabinet and repainting the cabinet.

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.



iii


About This Document

Symbol

Description Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury. Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. Indicates a potentially hazardous situation which, if not 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 in boldface. 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.

Convention

Description

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.



iv


About This Document

Convention

Description

[ x | y | ... ]

Optional items are grouped in brackets and separated by vertical bars. One item is selected or no i tem 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.

Convention

Description

Boldface

Buttons, menus, parameters, tabs, window, and dialog titles are in boldface. For example, click OK .

>

Multi-level menus are in boldface and 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 Enter and press Tab.

Key 1+Key 2

Press the keys concurrently. For example, pressing Ctrl+Alt +A means the three keys should be pressed concurrently.

Key 1, Key 2

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

Mouse Operations

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

Action

Description

Click

Select and release the primary mouse button without moving the pointer.



v


About This Document

Action

Description

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.



vi


Contents

Contents About This Document.....................................................................................................................ii 1 Change History..............................................................................................................................1 2 Preparing for Installation.............................................................................................................2 2.1 Document Preparations...................................................................................................................................................3 2.2 Tools and Instruments....................................................................................................................................................3 2.3 Skills and Requirements for Onsite Personnel...............................................................................................................4

3 Information to Be Known Before the Installation..................................................................5 3.1 TP48200A Configurations..............................................................................................................................................6 3.2 Space Requirements.......................................................................................................................................................8

4 Installing Procedure....................................................................................................................10 5 Checking Installed Components and Cables.........................................................................12 6 Installing the Cabinet.................................................................................................................16 7 Installing a PGND Cable...........................................................................................................20 8 Installing Components...............................................................................................................22 8.1 Installing a Rectifier.....................................................................................................................................................23 8.2 Installing Storage Batteries...........................................................................................................................................23 8.3 Installing a BBU...........................................................................................................................................................27

9 Installing Cables..........................................................................................................................30 9.1 Cabling R equirements..................................................................................................................................................31 9.2 Cable Outlets................................................................................................................................................................37 9.3 Installing the AC Input Power Cable............................................................................................................................39 9.4 Installing BBU Equipotential Cables...........................................................................................................................42 9.5 Installing BBU Power Cables.......................................................................................................................................44 9.6 Installing RRU Power Cables.......................................................................................................................................45 9.7 Installing FE/GE Optical Fibers...................................................................................................................................48 9.8 Installing Monitoring Signal Cables.............................................................................................................................51 9.9 Installing CPRI Optical Fibers.....................................................................................................................................52

10 Installation Checklist................................................................................................................55 Issue Draft B (2014-01-20)


vii


Contents

11 Powering On a Base Station....................................................................................................58 12 Follow-up Operations...............................................................................................................62



viii


1 Change History

1

Change History

This chapter describes the changes in different document versions.

Draft B (2014-01-20) This is draft B. Compared with draft A (2013-12-30), this issue does not include any new information. Compared with draft A (2013-12-30), this issue includes the following changes.

Topic

Description

9.6 Installing RRU Power Cables

Modified the installation procedure.

No information in draft A (2013-12-30) is deleted from this issue.

Draft A (2013-12-30) This is draft A.



1


2 Preparing for Installation

2

Preparing for Installation

About This Chapter This section describes the tools and meters that need to be available before the installation. It also describes the skills and qualifications that the installation engineers must possess. 2.1 Document Preparations This section lists the documents that must be obtained before the installation. 2.2 Tools and Instruments This section lists the tools and instruments that must be obtained before installation. 2.3 Skills and 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.



2



2.1 Document Preparations This section lists the documents that must be obtained before the installation. Before the installation, familiarize yourself with related information in the following documents: l l l l

Safety Precautions Installation Reference TP48200A Hardware Description BBU Hardware Description

2.2 Tools and Instruments This section lists the tools and instruments that must be obtained before installation. Marker

Phillips screwdriver (M3 to M6)

Diagonal pliers

Flat-head screwdriver (M3 to M6)

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

Hammer drill (Φ16)

Heat gun

Level



3



Multimeter

Measuring tape

Vacuum cleaner

ESD wrist strap

ESD gloves

Torque screwdriver

Gloves

Utility knife

Hydraulic pliers

Torx screwdriver

-

-

2.3 Skills and 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. Before the installation, pay attention to the following it ems: l

l

The customer's technical engineers must be trained by Huawei and be familiar with the proper installation and operation methods. The number of onsite personnel depends on the engineering schedule and installation environment. Generally, only three to five onsite personnel are necessary.



4


3 Information to Be Known Before the Installation

3

Information to Be Known Before the Installation

About This Chapter Familiarize yourself with this information as well as the cabinet interior and relevant space requirements before installing the cabinets. 3.1 TP48200A Configurations This section describes the hardware configurations in a TP48200A cabinet. 3.2 Space Requirements This section describes the space required for maintaining the TP48200A cabinet and routing cables.



5



3.1 TP48200A Configurations This section describes the hardware configurations in a TP48200A cabinet. The following figure shows the TP48200A interior. Figure 3-1 Interior of the TP48200A

The following table describes the components in the TP48200A.



6



Table 3-1 Components in the TP48200A

No.

Component

Mandatory or Optional

Maximum Number of Boards or Modules Configured in a Single Cabinet

Remarks

1

DC PDU

Mandatory

1

The DC PDU distributes DC power to components in the cabinet.

2

SMU02B

Mandatory

1

The SMU02B monitors parameters about each running component, identifies the running status, and reports alarms.

3

Battery switch

Mandatory

1

The battery switch is used to manually and temporarily power on batteries.

4

BBU

Mandatory

3

The BBU processes the baseband signals of the base station.

5

AC PDU

Mandatory

1

An AC PDU feeds external AC power into the cabinet.

6

Storage batteries

Mandatory

4

Storage batteries provide DC load power when the input AC power is interrupted and the rectifier stops working.



7



No.

Component

Mandatory or Optional

Maximum Number of Boards or Modules Configured in a Single Cabinet

Remarks

7

UIM02C

Mandatory

1

The UIM02C supports eight dry contact outputs, nine dry contact inputs, and three analog parameter inputs.

8

Rectifier

Mandatory

1

The rectifier converts 220 V AC or 380 V AC power into -48 V DC power.

9

MUX

Mandatory

1

The MUX connects CPRI optical fibers.

10

Power splitter

Optional

1

The power splitter divides one GPS signal input into multiple GPS signals.

3.2 Space Requirements This section describes the space required for maintaining the TP48200A cabinet and routing cables. The space requirements for installing a TP48200A cabinet are as follows: l

A minimum of 1500 mm clearance in front of the cabinet must be reserved.

l

A minimum of 100 mm clearance behind the cabinet must be reserved.

l

A minimum of 200 mm clearance on the left of the cabinet must be reserved.

l

A minimum of 200 mm clearance on the right of the cabinet must be reserved.

l

A minimum of 150 mm clearance on top of the cabinet must be reserved.

The following figure shows the space requirements for installing a TP48200A cabinet.



8



Figure 3-2 Space requirements



9


4 Installing Procedure

4

Installing Procedure

In this scenario, the TP48200A, components in the TP48200A, and related cables must be installed onsite. In addition, optional components may be required according to the onsite condition. NOTE

When installing components or cables, take proper electrostatic discharge (ESD) protection measures, for example, wear ESD gloves, to prevent electrostatic damage to the boards or electronic components.

The following flowchart describes the procedure for i nstalling a TP48200A.



10


4 Installing Procedure

Figure 4-1 Installing procedure



11


5 Checking Installed Components and Cables

5

Checking Installed Components and Cables Components and cables in the cabinet have been installed before delivery. You need to check whether the components and cables are installed securely.

Procedure Step 1 Check whether the component installation is in compliance with the instructions shown in the following figure and table. In addition, check whether the cables are securely installed. Tighten the screws if necessary.



12



Figure 5-1 Configuration of internal components in the cabinet

Table 5-1 Description of internal components in the cabinet

No.

Component Name

1

DC PDU

2

SMU02B

3

Battery switch

4

AC PDU

5

UIM02C

6

Rectifier

Step 2 Check whether the signal cable connections are in compliance with the instructions shown in the following figure and table. In addition, check whether the cables are securely installed. Issue Draft B (2014-01-20)


13



Figure 5-2 Signal cables installed in the cabinet

Table 5-2 Positions for installing signal cables in a cabinet

No.

Cable

One End

The Other End

Connector

Connected to...

Connector

Connected to...

1

Monitoring signal cable for the temperature sensor

Sensor

Fan box

2-pin connector

TEMP1 port on the UIM02C

2

Monitoring signal cable for the door status sensor

-

Door status sensor

2-pin connector

GATE port on the UIM02C



14



No.

3

Cable

Monitoring signal cable for the battery cabinet

One End

The Other End

Connector

Connected to...

Connector

Connected to...

Sensor

Storage batteries

2-pin connector

BTEMP on the UIM02C

----End



15


6 Installing the Cabinet

6

Installing the Cabinet

This section describes the procedures and precautions to be taken for installing the cabinet.

Prerequisites l

The installation environment is clean and dry.

l

The concrete pad on which the cabinet is to be installed is flat.

Procedure Step 1 Remove the cover from the cabinet packaging box and find the hole marking-off template on the cover interior, as shown in the following figure. Figure 6-1 Taking the marking-off template

Step 2 Mark the hole positions based on the marking-off template, as shown in Figure 6-2. Figure 6-3 shows the cabinet dimensions and mounting holes.



16



Figure 6-2 Marking hole positions

Figure 6-3 Cabinet dimensions and mounting holes

Step 3 Drill holes at the anchor points, and then install expansion bolt assemblies, as shown in the following figure. Issue Draft B (2014-01-20)


17



Figure 6-4 Drilling holes and installing expansion bolt assemblies

1. M12x60 bolt

1.

2. Spring washer

3. Plastic pipe

4. Flat washer

5. Expansion sleeve

Use a hammer drill with a Ф16 bit to drill holes vertically at the marked anchor points. Ensure that the depth of each hole ranges from 52 mm to 60 mm.

CAUTION To avoid inhaling the dust or getting it in your eyes, use protective gear when drilling holes. 2.

Use a vacuum cleaner to clean the inside and outside of the holes and measure the distances between the holes. If one or certain holes are not at the proper position, drill a hole or holes again.

3.

Tighten the expansion anchor bolts slightly and place one vertically into each hole.

4.

Use a rubber mallet to hammer the expansion bolt until it goes into the hole completely.

5.

Remove the M12x60 bolt, spring washer, plastic pipe, and flat washer in sequence. NOTE

After removing an expansion bolt, discard the plastic pipe.

Step 4 Secure the cabinet, as shown in the following figure. 1.

Place the cabinet on the floor, and align the expansion bolt with the holes in the base.

2.

Lead the bolts through the spring washers and flat washers.



18



3.

Install the bolts into the expansion sleeves through the holes on the base and tighten the bolts slightly.

4.

Use a torque socket to tighten the expansion bolts with a torque of 40.5 N·m to 49.5 N·m.

Figure 6-5 Securing the cabinet

----End



19


7 Installing a PGND Cable

7

Installing a PGND Cable

A PGND cable connects the PGND screws on the cabinet and the ground bar to ensure proper grounding of the cabinet.

Context The PGND cable is terminated with an M8 OT terminal and a cross-sectional area of 16 mm 2.

Procedure Step 1 Prepare a PGND cable. 1.

Cut the power cable to the required length based on the actual cable route.

2.

Install an OT terminal to both ends of the cable by referring to Assembling the OT Terminal and the Power Cable.

Step 2 Install a PGND cable, as shown in Figure 7-2. 1.

Connect one end of the PGND cable to the site ground bar.

2.

Route the other end of the cable out of the cable outlet along the bottom left side of the cabinet, and connect the cable to the ground bar for the TP48200A.

NOTICE When installing a PGND cable, ensure that the OT terminals on the PGND cable are oriented correctly and that the screws are tightened, as shown in Figure 7-1.

Figure 7-1 Installing an OT terminal



20


7 Installing a PGND Cable

Figure 7-2 Installing a PGND cable

(1) Ground bar in a cabinet

(2) Ground bar in a site

Step 3 Lay out the cables according to the instructions in 9.1 Cabling Requirements and 9.2 Cable Outlets.

Step 4 Label the installed cables according to the instructions in Attaching a Sign Plate Label. ----End



21


8 Installing Components

8

Installing Components

About This Chapter This section describes the procedure for installing components of the TP48200A. 8.1 Installing a Rectifier The rectifier converts the input AC power into the -48 V DC power for output. 8.2 Installing Storage Batteries If a site requires power backup, storage batteries must be installed in a TP48200A. 8.3 Installing a BBU This section describes the procedure and precautions for installing a BBU in a TP48200A when a TP48200A is deployed outdoors.



22



8.1 Installing a Rectifier The rectifier converts the input AC power into the -48 V DC power for output.

Prerequisites l

Rectifiers are found intact after unpacking and check. In case of any discrepancy, contact your local Huawei office.

l

The filler panels on the slot for installing the rectifiers have been removed from the cabinet.

Procedure Step 1 Push the locking latch towards the left. Step 2 Draw the handle downwards. Step 3 Gently push a rectifier into its slot along the guide rail. Step 4 Push the handle upwards. Step 5 Push the locking latch towards the right to secure the handle. Figure 8-1 Installing a rectifier

----End

8.2 Installing Storage Batteries If a site requires power backup, storage batteries must be installed in a TP48200A.

Prerequisites l

l

Verify that all batteries are of the same model and batch from the same manufacturer. The battery voltages are almost the same. Switch off the battery circuit breakers before you install the batteries.



23



DANGER Before operating batteries, read the safety instructions and master the method of connecting the batteries.

Context

DANGER l

During the installation, avoid any contact between the exposed metal conductors in the power cables and the metal housing of the cabinet.

l

During the installation, avoid short circuits or reverse connections between the positive and negative poles of the storage batteries.

l

All tools used for installation must be insulated to avoid burning of storage batteries and to ensure personal safety.

Procedure Step 1 Verify that the circuit breaker labeled BAT corresponding to the DC PDU is set to OFF. Step 2 Install the batteries from left to right, as shown in the following figure. Figure 8-2 Installing storage batteries

Step 3 Install copper bars for connecting st orage batteries. NOTE

Copper bars between batteries are installed in the same way. The following procedure describes how to install a copper bar between battery 1 and battery 2.

1.

Remove the insulation covers from battery 1 and battery 2, as shown in the following figure.



24



Figure 8-3 Removing the insulation covers

2.

Install a copper bar between battery 1 and battery 2, as shown in the following figure. Figure 8-4 Installing a copper bar between batteries

3.

Reinstall the insulation cover for battery 1, as shown in the following figure.



25



Figure 8-5 Reinstalling the insulation cover

Step 4 Install battery cables, as shown in the following figure.

NOTICE Install all negative power cables for storage batteries before you install positive power cables. 1.

Remove the insulation covers from battery 1 and battery 4.

2.

Take the negative battery cable from the left side of the battery compartment and install the cable to the negative battery wiring terminal.

3.

Take the positive battery cable from the right side of the battery compartment and install the cable to the positive battery wiring terminal.

4.

Reinstall the insulation covers for battery 1 and battery 4.



26



Figure 8-6 Installing battery cables

----End

8.3 Installing a BBU This section describes the procedure and precautions for installing a BBU in a TP48200A when a TP48200A is deployed outdoors.

Context A maximum of three BBUs can be installed in a TP48200A. The following figure shows the BBU installation positions.



27



Figure 8-7 BBU installation position

(1) BBU

Procedure Step 1 (Optional) If the BBU mounting ears are reversely installed, skip this step. If the BBU mounting ears are installed in standard mode, perform the following operations: 1.

Remove the four M4 screws from the mounting ear on each side of the BBU.

2.

Install the mounting ears reversely and tighten the four M4 screws on each of the mounting ears, with a torque of 1.2 N·m (10.62 lbf·in.).



28



Figure 8-8 Installing mounting ears reversely

Step 2 Slide a BBU along the guide rails into a TP48200A, and then tighten four M6x16 screws on the panel with a torque of 2 N·m, as shown in the following figure. Figure 8-9 Installing a BBU

----End



29


9 Installing Cables

9

Installing Cables

About This Chapter This section describes how to install cables for the cabinet and other mandatory components. 9.1 Cabling R equirements Cables must be laid out according to the specif ied cabling requirements to prevent signal interference. 9.2 Cable Outlets This section describes the cabling direction of the TP48200A over the cable outlets. 9.3 Installing the AC Input Power Cable The AC input power cable for the TP48200A is used to connect the external power equipment and AC input circuit breakers on the PDU, feeding external power into the TP48200A. 9.4 Installing BBU Equipotential Cables A BBU equipotential cable connects ground bolts on a BBU and a TP48200A to ensure the equipotential bonding between the BBU and TP48200A. 9.5 Installing BBU Power Cables A BBU power cable feeds power into the BBU from the DC power distribution unit (PDU). 9.6 Installing RRU Power Cables An RRU power cable connects a DC PDU and an RRU, and feeds power into the RRU from the DC PDU. 9.7 Installing FE/GE Optical Fibers This section describes the procedure and precautions for installing FE/GE optical fibers. 9.8 Installing Monitoring Signal Cables This chapter describes the procedures and precautions for installing monitoring signal cables. 9.9 Installing CPRI Optical Fibers A common public radio interface (CPRI) optical fiber transmits CPRI signals between a baseband unit (BBU) and a remote radio unit (RRU).



30


9 Installing Cables

9.1 Cabling Requirements Cables must be laid out according to the specified cabling requirements to prevent signal interference. NOTE

If a cable listed below is not required, skip the cabling requirements of the cable.

General Cabling Requirements Bending radius requirements l

The bending radius of a 7/8'' feeder must be greater than 250 mm (9.84 in.), and the bending radius of a 5/4'' feeder must be greater than 380 mm (14.96 in.).

l

The bending radius of a 1/4'' jumper must be greater than 35 mm (1.38 in.). The bending radius of a super-flexible 1/2'' jumper must be greater than 50 mm (1.97 in.), and the bending radius of an ordinary 1/2'' jumper must be greater than 127 mm (5 in.).

l

The bending radius of a power cable or PGND cable must be at least three times its diameter.

l

The bending radius of a fiber optic cable is at least 20 times of its diameter, and the bending radius of a breakout cable is at least 30 mm (1.18 in.).

l

The bending radius of an E1/T1 cable must be at least three times its diameter.

l

The bending radius of a signal cable must be at least five times its diameter.

Cable binding requirements l

Cables of the same type must be bound together.

l

Different types of cables must be separately laid out and bound, with a minimum distance of 30 mm (1.18 in.) from each other.

l

The cables must be bound tightly and neatly. The sheaths of the cables must not be damaged.

l

The cable ties must face the same direction, and those at the same horizontal line must be in a straight line.

l

The excess of the indoor cable ties is cut off. The excess of 5 mm (0.197 in.) of the outdoor cable ties is reserved, and the cut surfaces are smooth without sharp edges.

l

After cables are installed, labels or nameplates must be attached to the cables at their ends, curves, and interconnection positions.

Security requirements l

When routing cables, avoid sharp objects, for example sharp edges on the wall. If necessary, use tubes to protect the cables.

l

When routing cables, keep the cables away from heat sources and use heat insulation materials to insulate the cables from the heat sources.

l

Reserve a proper distance (0.1 m or 3.937 in. is recommended) between equipment and cables especially at the cable curves to protect the cables and equipment.

Indoor cabling requirements l

Route each cable into the room through the feeder window.



31


9 Installing Cables l

Reserve drip loops for all cables outside the feeder window before routing them into the room. Ensure that the radiuses of the drip loops are greater than or equal to the minimum bending radiuses of the cables.

l

When routing a cable into the room, ensure that a person is assisting you in the room.

l

Apply waterproof treatment to the feeder window.

Outdoor Cabling Requirements l

Protect outdoor cables against potential damage. For example, put the cables through tubes.

l

The cables to be protected include AC power cables, transmission cables, and cables laid out underground.

l

When routing cables through tubes on the ground below the cabinet, put a 30 mm to 50 mm (1.18 in. to 1.97 in.) length of the tubes into the base of the cabinet but do not put the tubes into the cabinet. Use waterproof tape or waterproof silicon gel to block both ends of the tubes and use sheet metal tabs to secure the tubes to the cable holes in the base.

l

When routing cables through tubes along a metal cable trough below the cabinet, do not put the tubes into the base of the cabinet but cover the cable trough and connect the tubes to the cable holes in the base.

l

Use clips to secure cables outdoors. For the method of installing a clip, see the installation guide delivered with the clip.

l

Arrange cables neatly along the routing direction and use clips to secure the cables.

l

Determine the positions where the clips are i nstalled according to the actual situation. For example, 7/8" feeders are secured with clips at an interval of 1.5 m to 2 m (4.92 ft to 6.56 ft), CPRI fiber optic cables and power cables are secured with clips at an interval of 1 m to 1.5 m (3.28 ft to 4.92 ft). Ensure that the clips are evenly spaced and in the same direction.

l

When fastening cables with a clip, ensure that the cables are routed through the holes in the clip and arranged neatly and straightly. Do not stretch the cables too tightly. NOTE

There are two types of clips: 3-hole clip and 6-hole clip, which are described as follows: l

A 3-hole clip is shown by illustration a in the following figure. It is often used to fasten feeders.

l

A 6-hole clip is shown by illustration b in the following figure. It is often used to fasten power cables and CPRI fiber optic cables.

Figure 9-1 Exterior of the clips

(1) Cable hole for feeders


(2) Cable hole for fiber optic cables


(3) Cable hole for power cables

32


9 Installing Cables

The following figure shows the cables secured on a cable tray. Figure 9-2 Cables secured on a cable tray

(1) 3-hole clip

(2) 6-hole clip

The following figure shows the cables secured on a tower.



33


9 Installing Cables

Figure 9-3 Cables secured on a tower

(1) 3-hole clip

(2) 6-hole clip

Special Cabling Requirements Cabling of power cables l

Power cables must be installed in the position specified in engineering design documents.

l

If the length of power cables is insufficient, replace the cables rather than adding connectors or soldering joints to lengthen the cables.

l

Cables can only be laid out under well-planned instructions. The cabling activities of fiber optic cables are allowed only when qualified personnel and communication facilities are available.

l

Do not circle and twist cables.



34



After routing a DC power cable onto the platform on a tower, route it along the shortest path to the rails surrounding the platform, and route it along the inside of the rails.

l

After routing a DC power cable close to the equipment on a tower, use clips to secure the power cable onto a pole or the rails surrounding the platform. Ensure that there is no excessively long distance between the equipment and the position where the power cable is secured.

Cabling of PGND cables l

PGND cables for a base station must be connected to t he same group of ground bars.

l

PGND cables must be buried in the ground or routed indoors.

l

The external conductor of the coaxial wire and the shield layer of the shielded cable must have proper electrical contact with the metal surface of the equipment to which they are connected.

l

PGND cables and signal cables must be installed separately. A certain distance must be reserved between them to prevent interference from each other.

l

Switches or fuses must not be installed on the PGND cables.

l

Other devices must not be used for electrical connections of the PGND cables.

l

All the metal parts in the housing of the equipment must be reliably connected to the ground terminal.

Cabling of E1 cables l

E1 cables must not cross power cables, PGND cables, or RF cables when laid out. If transmission cables are laid out with power cables, PGND cables, or RF cables in parallel, the spacing between them must be greater than 30 mm (1.18 in.).

l

E1 cables are laid out straightly and bound neatly with cable ties.

l

Sufficient slack is provided for E1 cables at turns.

l

E1 cables must not be pressed by the door of the cabinet when routed, as shown in the following figure. Figure 9-4 E1 cables routed in the cabinet

Cabling of fiber optic cables l

At least three persons are required for laying out fiber optic cables. The cabling activities of fiber optic cables are allowed only when qualified personnel and communication facilities are available.



35



The operating temperature of fiber optic cables ranges from -40ºC to +60ºC (-40ºF to +140ºF). If the actual temperature is beyond this range, take protective measures or select another route.

l

Do not circle and twist cables.

l

Do not bind a fiber optic cable at the position where it bends.

l

Do not stretch, step on, or place heavy objects on fiber optic cables. Keep the fiber optic cables away from sharp objects.

l

When fiber optic cables are routed, the excess of the fiber optic cables must be coiled around special devices, such as a fiber coiler.

l

An unarmored fiber optic cable must be bound using binding straps. If a fiber optic patch cord needs to be secured in a cabinet or a piece of equipment, use binding straps to bind it and then use cable ties to secure the binding straps to the cabinet or equipment. Ensure that the fiber optic cables can flexibly move in the cable ties. Do not bend the fiber optic cables sharply. The following figure shows how to bind the fiber optic cables correctly. Figure 9-5 Binding fiber optic cables

l

When coiling fiber optic cables, apply even strength. Do not bend the fiber optic cables with force.

l

Unused optical connectors must be covered with dustproof caps.

l

The fiber optic cables must not be pressed by the door of the cabinet when routed, as shown in the following figures. Figure 9-6 CPRI fiber optic cables routed in the cabinet (1)



36


9 Installing Cables

Figure 9-7 CPRI fiber optic cables routed in the cabinet (2)

Figure 9-8 FE/GE fiber optic cables routed in the cabinet

l

After routing a fiber optic cable onto the platform on a tower, route it along the shortest path to the rails surrounding the platform, and route it along the inside of the rails.

l

After routing a fiber optic cable close to the equipment on a tower, use clips to secure the fiber optic cable onto a pole or the rails surrounding the platform. Ensure that there is no excessively long distance between the equipment and the position where the cable is secured.

l

Coil the excess of the fiber optic cables near the equipment on the tower before securing the cables on the tower.

9.2 Cable Outlets This section describes the cabling direction of the TP48200A over the cable outlets. The following figure shows the cable outlets of the TP48200A.



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9 Installing Cables

Figure 9-9 Cable outlets in a TP48200A

(1) Left cable outlet

(2) Right cable outlet

The following table describes the cable routing over the cable outlets in a TP48200A. Table 9-1 TP48200A cable routing over cable outlets

Cable Outlet No.

Description

1, 2

Used for routing the PGND cable and TP48200A input power cable. You can use cable outlet 1 or 2 and reserve the other one.

3, 4

Used for routing RRU power cables.

NOTE

Other cable outlets are used for routing optical fibers, including CPRI optical fibers and FE/GE optical fibers, and GPS signal cables. The cabling outlets are allocated based on the number of onsite optical fibers. l

Optical fibers are routed from the left cable outlets by default. If the left cable outlets are insufficient, the right cable outlets are used.

l

If the top BBU is connected to 24 optical fibers, it is recommended that the optical fibers are routed from the right cable outlets.

l

The GPS signal cables and optical fibers are routed from the same cable outlet preferentially. If the cable outlets are insufficient to route both the optical fibers and GPS signal cables, optical fibers are routed preferentially. The GPS signal cables are routed from the RRU power cable outlets.



38


9 Installing Cables

9.3 Installing the AC Input Power Cable The AC input power cable for the TP48200A is used to connect the external power equipment and AC input circuit breakers on the PDU, feeding external power into the TP48200A.

Context The following table lists the specifications of an AC input power cable for the TP48200A. Table 9-2 Power cable specifications

Cable 220 V AC or 380 V AC three phase input power cable with four core wires

220 V AC single-phase input power cable

One End

The Other End

Color

L1

Cord end terminal

Brown

L2

Cord end terminal

Prepared to match the external equipment

L3

Cord end terminal

Gray

N

Cord end terminal

Blue

L

OT terminal (M6, 25 mm2)

N

Cord end terminal

PE


Prepared to match the external equipment

Black

Brown

Blue

Green and yellow

Procedure Step 1 Prepare the AC input power cable for the TP48200A. 1.

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

2.

Prepare a cord end terminal and an OT terminal for one end of the cable. For details about how to prepare cord end terminals and OT terminals, see Assembling the Cord End Terminal and the Power Cable and Assembling the OT Terminal and the Power Cable.

Step 2 Install AC input power cables for the TP48200A, as shown in Figure 9-10 and Figure 9-11. 1.

Use a Phillips screwdriver to remove an M3 screw from the protective cover for the AC input terminals, and open the protective cover.

2.

Optional: Remove the short-circuiting copper bars on the L1, L2, and L3 AC input terminals. If single-phase 220 V AC input power is supplied, skip this step.



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9 Installing Cables

Step 3 Route the AC input power cable out of the cable outlet on the bottom left side of the cabinet. Step 4 Connect the AC input cable to the corresponding AC input terminals and circuit breakers and secure them, as shown in the following figure. Figure 9-10 Installing the 220 V or 380 V AC input power cable

(1) AC power distribution box



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9 Installing Cables

Figure 9-11 Installing the 220 V AC input power cable

(1) AC power distribution box

Step 5 Optional: Secure the insulation cover to the short-circuiting copper bar, as shown in the following figure. If single-phase 220 V AC input power is supplied, skip this step.



41


9 Installing Cables

Figure 9-12 Securing the insulation cover to the short-circuiting copper bar

Step 6 Install the removed cover plate on the AC PDU. Step 7 Lay out the cables according to the instructions in 9.1 Cabling Requiremen Requirements ts and 9.2 Cable Outlets.


9.4 Installing BBU Equipotential Equipotential Cables A BBU equipotential cable connects ground bolts on a BBU and a TP48200A to ensure the equipotential bonding between the BBU and TP48200A.

Context The following table lists the specifications of a BBU power cable. Table 9-3 Specifications of a BBU power cable

Cable

BBU equipotential cable


One End

The Other End

Connector

Connected to...

Connector

Connected to...


BBU ground screw


Ground screw in the cabinet


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9 Installing Cables

Procedure Step 1 Prepare the BBU equipotential cable. 1.

Cut the power cable to the required length based on the actual cable route.

2.

Install an OT terminal to both ends of the cable by referring to Assembling the OT Terminal and the Power Cable.

Step 2 Install the equipotential cable between the BBU and TP48200A, as shown in the following figure. Figure 9-13 Installing BBU Equipotential Cables

Step 3 Route the cable by referring to Cabling Requirements. Then use cable ties t o bind the cable. Issue Draft B (2014-01-20)


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9 Installing Cables


9.5 Installing BBU Power Cables A BBU power cable feeds power into the BBU from the DC power distribution unit (PDU).

Context The following table lists the specifications of BBU power cables. Table 9-4 Specifications of BBU power cables

Cable

One End

The Other End

BBU power cable

3V3 connector

l

Cord end terminal

l

OT terminal (M4)

Procedure Step 1 Prepare the BBU power cable. 1.

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

2.

Prepare a cord end terminal and an OT terminal for one end of the cable. For details about how to prepare cord end terminals and OT terminals, see Assembling the Cord End Terminal and the Power Cable and Assembling the OT Terminal and the Power Cable.

Step 2 Connect the 3V3 connector at one end of the BBU power cable to the -48V port on the UPEU in the BBU. Then tighten the screws on the connector with a torque of 0.25 N·m.

Step 3 Connect the cord end terminal at one end of the blue core wire to the F13 BLVD circuit breaker for the DC PDU, and connect the OT terminal at one end of the black core wire to the DC output positive bus bar (RTN+).

Step 4 The following figure shows the BBU power cable connections. NOTE

If three BBUs or less are installed in a cabinet, the cord end termials at one end of the BBU power cables are connected to BLVD circuit breakers from F13 to F15.



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9 Installing Cables

Figure 9-14 BBU power cable connections


Step 6 Label the installed cables according to the instructions in Attaching a Cable-Tying Label. ----End

9.6 Installing RRU Power Cables An RRU power cable connects a DC PDU and an RRU, and feeds power into the RRU from the DC PDU.

Context The following table lists the specifications of RRU power cables.



45


9 Installing Cables

Table 9-5 RRU power cable specifications

Cable Power cable of an RRU

One End

The Other End

Color

Remarks

RTN (+)

OT terminal

Depends on the RRU model

Black

NEG (-)

Cord end terminal

Dual-core cable with a cross-sectional area of 4 mm 2, a black sheath, and a shield layer

Blue

NOTE l

The colors and structures of cables vary according to countries and regions. If cables are purchased locally, the cables must comply with local rules and regulations.

l

The type of connector connecting to the power port on the RRU depends on the type of the RRU. For details about how to add a connector to an RRU power cable, see the related RRU installation guide.

Procedure Step 1 Route the RRU power cable to the cabinet through the cable outlet. Step 2 Install the ground clip, as shown in Figure 9-16. 1.

Strip the specified length of the sheath off the RRU power cable at the position 300 mm away from the cable outlet of the cabinet to expose the shield layer.

2.

Strip the shield layer at the position 350 mm away from the cable outlet of the cabinet to expose the two wires.

3.

Route the RRU power cable through the ground clip and ensure that the shield layer securely contacts with the ground clip. Then tighten the M4 screw on the ground clip to 1.2 N·m (10.62 lbf·in.). NOTE

When installing a ground clip for the RRU power cables, comply with the following rules: l

When one to three RRU power cables are installed, put all the RRU power cables on one side of the ground screw, as shown by illustration 1 in the following figure.

l

When four or six RRU power cables are installed, put two or three RRU power cables on each side of the ground screw, as shown by illustration 2 in the following figure.

l

When five RRU power cables are installed, two ground clips are required. You can thread three cables through one ground clip and two cables through the other group clip, or thread four cables through one ground clip or one cable through the other ground clip, as shown by illustration 3 in the following figure.

l

When seven to ten RRU power cables or twelve RRU power cables are installed, use two ground clips and comply with the preceding rules.

l

When eleven RRU power cables are installed, two ground clips are required. You can thread five cables through one ground clip and six cables through the other ground clip, as shown by illustration 4 in the following figure.



46


9 Installing Cables

Figure 9-15 Installing the ground clips (side elevation view)

Figure 9-16 Installing the ground clip

Step 3 Connect one end of the RRU power cable to the power port on the RRU.

CAUTION Ensure that the RRU power cable for an RRU added to a running base station must be connected to the RRU first and then to the power equipment. The operations in the reverse sequence may cause component damage or personal injury.



47


9 Installing Cables

Step 4 Connect the connector on the RRU power cable to the power equipment on the power equipment side. Connect the cord end terminals at one end of the blue core wires to F3 to F10 LLVD circuit breakers for the DC PDU, connect the OT terminals at one end of the black core wires to the DC output positive bus bar (RTN(+)), and secure the cord end terminals and OT terminals, as shown in the following figure. Figure 9-17 Installing RRU power cables


Step 6 Label the installed cables according to the instructions in Attaching a Cable-Tying Label. ----End

9.7 Installing FE/GE Optical Fibers This section describes the procedure and precautions for installing FE/GE optical fibers.



48


9 Installing Cables

Prerequisites

NOTICE l

l

Wear electrostatic discharge (ESD) gloves or an ESD wrist strap during operation to avoid module damage. Long-time exposure to the air causes performance exceptions on the optical module. Therefore, the optical module must be connected to optical fibers within 20 minutes after being unpacked.

Context l

Single-mode optical modules are labeled SM, and multi-mode optical modules are labeled MM.

l

The puller of a single-mode optical module is blue and the puller of a multi-mode optical module is black or gray.

l

An optical module to be installed must match the rate of its corresponding port.

Procedure Step 1 Install an optical module, as shown in Figure 9-18 and Figure 9-19. 1.

Remove the dustproof cap from the corresponding FE/GE optical port on the corresponding board in the BBU.

2.

Remove the dustproof cap from the optical module.

3.

Lower the puller of the optical module.

4.

Insert the optical module into the FE/GE optical port.

5.

Raise the puller of the optical module.

Figure 9-18 Removing the dustproof cap from the port



49


9 Installing Cables

Figure 9-19 Installing the optical module

Step 2 Install the optical fibers, as shown in Figure 9-20 and Figure 9-21. 1.

Remove the dust-proof caps from the connectors at the end labeled 2A and 2B on the optical fibers, and insert the connectors into the optical modules in the BBU.

2.

Route the optical fibers out from the cable outlet on the bottom right side of the cabinet.

3.

Connect the other end of the optical fibers to a transmission device.

NOTICE The TX and RX ports on the BBU boards must be connected to the RX and TX ports on the transmission equipment, respectively.

Figure 9-20 Removing the dust-proof cap from the optical fiber



50


9 Installing Cables

Figure 9-21 Installing optical fibers


Step 4 Attach labels to the installed cables by referring to Attaching an L-Shaped Label. ----End

9.8 Installing Monitoring Signal Cables This chapter describes the procedures and precautions for installing monitoring signal cables.

Procedure Step 1 Connect one end of the monitoring signal cable to ALM1 to ALM4 ports on the UIM02C.



51


9 Installing Cables

NOTE l

If one to four ports are available for dry contact alarms, connect one end of the monitoring signal cable to ALM1 to ALM4 ports on the UIM02C. Only one monitoring signal cable is required.

l

If five to eight ports are available for dry contact alarms, connect one end of a monitoring signal cable to ALM1 to ALM4 ports and connect one end of a monitoring signal cable to ALM5 to ALM8 ports on the UIM02C. Two monitoring signal cable are required.

Step 2 Connect the other end of the monitoring signal cable to the EXT_ALM0 or EXT_ALM1 port on the UPEU or UEIU, as shown in the following figure. Figure 9-22 Installing monitoring signal cables


Step 4 Label the installed cables according to the instructions in Attaching an L-Shaped Label. ----End

9.9 Installing CPRI Optical Fibers A common public radio interface (CPRI) optical fiber transmits CPRI signals between a baseband unit (BBU) and a remote radio unit (RRU).



52


9 Installing Cables

Context NOTE l l

Single-mode optical modules are labeled SM, and multi-mode optical modules are labeled MM. The puller of a single-mode optical module is blue and the puller of a multi-mode optical module is black or gray.

l

An optical module to be installed must match the rate of its corresponding port.

l

For details about CPRI optical fiber connections, see section "CPRI Cable Connections" in 3900 Series Base Station Cables.

NOTICE l

l

Wear electrostatic discharge (ESD) gloves or an ESD wrist strap during operation to avoid module damage. Long-time exposure to the air causes performance exceptions on the optical module. Therefore, the optical module must be connected to optical fibers within 20 minutes after being unpacked.

Procedure Step 1 Install an optical module, as shown in the following figure. 1.

Lower the puller on the optical module.

2.

Insert the optical module into the CPRI port on an LBBP, and then insert the optical module of the same type into the CPRI_W, CPRI0, or CPRI0/IR0 port on an RRU. NOTE

Optical modules with the same labels are of the same type.

3.

Raise the puller on the optical module.

Figure 9-23 Installing an optical module

Step 2 Install CPRI fiber optic cables, as shown in the following figure. 1.

Remove the dustproof cap from the connectors on the fiber optic cables.



53


9 Installing Cables

2.

Insert the DLC connectors labeled 2A and 2B at one end of the CPRI optical fibers into the optical module in the LBBP, and then insert the DLC connectors labeled 1A and 1B at the other end into the optical module in the RF module.

NOTICE l

When a CPRI optical fiber connects a BBU and an RRU, the breakout cables on the BBU side and on the RRU side are 0.34 m and 0.03 m, respectively.

l

If an LC-LC optical fiber is used, the TX and RX ports on the BBU must be connected to the TX and RX ports on the RF module, respectively.

Figure 9-24 Installing CPRI optical fibers


Step 4 Attach labels to the installed cables by referring to Attaching an L-Shaped Label. ----End



54


10 Installation Checklist

10

Installation Checklist

After the cabinets and devices are installed, you need to check the installation items, installation environment, and cable-related items.

Cabinet Installation Checklist The following table lists the items to be checked for the cabinet installation. Table 10-1 Cabinet installation checklist

No.

Item

1

The installation position of the cabinet strictly complies with the engineering design.

2

The base is securely installed.

3

All the bolts, including those for electrical connections, are tightened. The spring washers and the flat washers are installed in the correct sequence.

4

The cabinet is neat and clean.

5

The paint on the surface is intact. The damaged paint is repaired. For details, see Applying Touch-Up Paint.

6

Labels, tags, and nameplates are correct, legible, and complete.

Installation Environment Checklist The following table lists the items to be checked for the installation environment. Table 10-2 Installation environment checklist

No.

Item

1

No excessive straps or adhesive tapes are left on the cables.



55



No.

Item

2

No tapes, tails of cable ties, paper, or packing bags are left around the cabinet.

3

Antirust powder on the door of the cabinet is cleared.

Electrical Connection Checklist The following table lists the items to be checked for electrical connections. Table 10-3 Electrical connection checklist

No.

Item

1

All self-made PGND cables are copper-based with proper core diameters. There should not be any switch or fuse in t he grounding system. No short circuit is allowed.

2

The PGND cable is securely connected and the AC input power cable and cables in the cabinet are correctly connected according to the electrical design of the power system. The screws are tightened. In addition, the inputs or outputs are not shortcircuited.

3

The redundant part of the power cable or PGND cable is cut off rather than coiled.

4

The terminals at both ends of the power cable or PGND cable are securely soldered or crimped.

5

The bare wires and the terminal handles at the wiring terminals are coated with heat shrink tubing.

6

The flat washers and the spring washers are well mounted on all OT terminals.

7

The exterior of the storage battery is intact without any scratch, dent, or crack.

8

The shell of the storage battery is clean without any leakage trace.

9

The wiring terminal on the storage battery stands properly without any damage, and the post is not covered with any acid substances.

10

The pressure relief valve of the battery is not deformed, and no liquid leaks.

11

The power cables for the storage batteries are correctly connected to the positive and negative poles.

12

The voltage of the storage battery is normal.

13


l

The voltage of a 2 V storage battery ranges from 1.8 V to 2.35 V.

l

The voltage of a 12 V storage battery ranges from 10.8 V to 14.1 V.

l

The total voltage of the storage batteries ranges from 43.2 V to 56.4 V.

The circuit breakers for the storage batteries are set to OFF.


56



Cable Installation Checklist The following table lists the items to be checked for the cable installation. Table 10-4 Cable installation checklist

No.

Item

1

All cables, especially the Ethernet cables for communication, are securely connected. All cable connectors at the bottom of the cabinet are securely installed.

2

The cables are neatly and tightly bound. The cable ties are evenly spaced and face the same direction.

3

Different types of cables, such as the power cable, PGND cable, feeder, fiber optic cable, E1/T1, and FE/GE signal cable are separately bound.

4

The layout of all cables facilitates the maintenance and capacity expansion. For example, the maintenance transfer cable is bound to the outside of the BBU cable claw, as shown in the following figure.

5

All the labels at both ends of the cables are legible.

6

The extra length of the indoor cable ties is cut off, and the cut surfaces are smooth without sharp edges. The extra length of 3 mm (0.11 in.) to 5 mm (0.19 in.) of the outdoor cable ties is reserved when the cable ties are cut.

7

The port that no cable is connected to is properly protected.

8

The connectors of the RF cables are secured to avoid false connection that will cause an abnormal voltage standing wave ratio (VSWR).

Figure 10-1 Checking the maintenance transfer cable



57


11 Powering On a Base Station

11

Powering On a Base Station

This section describes how to power on a base station and handle power-on failures.

Prerequisites l

Components in the TP48200A are securely installed and the cable connections are correct.

l

The power supply to the TP48200A meets the power system requirements.

l

The external power supply to the TP48200A is disconnected and all circuit breakers are set to OFF.

Context

DANGER A power-on check involves high-voltage. Be cautious when conducting the power-on check. Do not use you hand or damp objects to touch the device with input voltage. This might be fatal.

NOTICE l

Power on a TP48200A or BBU within 7 days after unpacking it. If you power off a TP48200A or BBU for maintenance, restore power to the cabinet or BBU within 48 hours.

l

After you unpack an RRU, power on it within 24 hours. If you power off t he RRU for maintenance, restore power to the RRU within 24 hours.

Power-on Process The following figure shows the power-on process.



58



Figure 11-1 Power-on process

Procedure Step 1 Use a multimeter to measure the resistance between the external power supply and the ground to ensure that there is no short circuit.

Step 2 Turn on the external power circuit breaker to power on the TP48200A. Step 3 Set the circuit breaker on the DC PDU to ON. Step 4 Set the power circuit breaker on the UPEU in the BBU to ON, and check the power supply to components in the cabinet according to the following table.



59



Table 11-1 Normal status of the components

Component

Indication of Normal Power Supply

Rectifier

l

Power indicator: steady green

l

Fault indicator: steady off

l

UPEU: The RUN indicator is steady on.

l

FAN: The STATE indicator blinks 1s on and 1s off.

l

Other boards: The RUN indicator blinks (on for 1s and off for 1s).

l

RUN indicator: blinking 1s on and 1s off

l

ALM indicator: steady off

BBU

RRU

Step 5 Optional: If the power supply to a component fails after the cabinet is powered on, handle the fault according to the instructions in the following table. Table 11-2 Troubleshooting

Failure Type

Handling Measure

Failure in the power supply to all components in the cabinet

Check whether the power cables are reversely connected. l

l

Failure in the power supply to a board in the BBU

If the cables are incorrectly connected, set all the circuit breakers to OFF, and then reconnect the power cables. If the cables are correctly connected, replace the power units.

Check as follows: 1. Remove the board, and check whether any pin of the slot on the backplane is bent, broken, or missing. Replace the subrack if necessary. 2. Insert the board into the subrack, and check the status of indicators on the board. 3. If the indicators indicate an exception, remove the board, insert it into a vacant slot holding the boards of the same type, and check the status of the indicators.


l

If the board works properly, the original slot is faulty. In this case, replace the subrack.

l

If the fault persists, the board is faulty. In this case, replace the board.


60



Failure Type

Handling Measure

Failure in the power supply to other components in the cabinet

Check as follows: 1. Check whether the indicator on the fuse terminal block that connects power supply to the component is on. Skip this step and go to 5.2 if this component does not use any fuse t erminal block. l

If the indicator on the fuse terminal block is on, the fuse is faulty. In this case, replace the fuse according to the instructions in Replacing a Fuse.

l

If the indicator on the fuse terminal block is off, go to 5.2.

2. Use a multimeter to measure the input power to the component. l

If the input power is normal, replace the component.

l

If the input power is abnormal, check whether the power cable for the component is connected securely. If the power cable is not securely connected, turn off the circuit breaker for the component (if there is no circuit breaker for the component, remove the connector from the power unit) and reconnect the power cable. If the power cable is securely connected, the protector (such as circuit breaker or fuse) on the component may be damaged. In this case, replace the damaged protector. If the protector cannot be replaced, replace the upper-level power distribution component.

----End



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TP48200A Installation Guide(V100R008C01_Draft B)(PDF)-En

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