DBS3900 WCDMA Site Preparation Guidelines(V200_02)1.pdf

DBS3900 WCDMAV200

Site Preparation Guidelines

Issue 02Date 2009-01-05

Huawei Proprietary and ConfidentialCopyright Huawei Technologies Co., Ltd.

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

Bantian, LonggangShenzhen 518129People's Republic of China

Website: http://www.huawei.comEmail: [email protected] Copyright Huawei Technologies Co., Ltd. 2009. All rights reserved.No part of this document may be reproduced or transmitted in any form or by any means without prior writtenconsent of Huawei Technologies Co., Ltd. Trademarks and Permissions

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

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Contents

About This Document............................................................11 Changes in the DBS3900 WCDMA Site Preparation Guidelines...................1-12 Safety Information.........................................................2-1

2.1 Safety Precautions...........................................................................................................................................2-12.2 Electricity Safety.............................................................................................................................................2-32.3 Inflammable Environment...............................................................................................................................2-52.4 Battery.............................................................................................................................................................2-52.5 Radiation.........................................................................................................................................................2-72.6 Working at Heights.........................................................................................................................................2-92.7 Mechanical Safety.........................................................................................................................................2-112.8 Others............................................................................................................................................................2-13

3 Site Requirements of the DBS3900...........................................3-13.1 Site Selection Requirements of the NodeB.....................................................................................................3-23.2 Space Requirements of the DBS3900.............................................................................................................3-2

3.2.1 Space Requirements of the BBU3900....................................................................................................3-33.2.2 Space Requirements of the RRU and SRXU.........................................................................................3-43.2.3 Space Requirements of the SLPU..........................................................................................................3-8

3.3 Construction Requirements of the BBU3900 Equipment Room..................................................................3-103.4 Requirements for the Tower Where the RRU is Installed.............................................................................3-123.5 Working Environment Requirements of the DBS3900.................................................................................3-13

4 Power Supply Requirements of the DBS3900...................................4-14.1 Requirements for the Power System of the DBS3900 in Outdoor Coverage.................................................4-2

4.1.1 Requirements for the AC Power System of the DBS3900 in Outdoor Coverage..................................4-24.1.2 Requirements for the DC Power System of the DBS3900 in Outdoor Coverage..................................4-4

4.2 Requirements for the Power System of the DBS3900 in Indoor Coverage....................................................4-54.2.1 Requirements for the AC Power System of the DBS3900 in Indoor Coverage....................................4-64.2.2 Requirements for the DC Power System of the DBS3900 in Indoor Coverage....................................4-7

5 Grounding Requirements of the DBS3900......................................5-16 Transmission Requirements of the NodeB Site................................6-17 Preparing Auxiliary Facilities for the DBS3900 Site........................7-1

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7.1 Installing the Cable Rack................................................................................................................................7-27.1.1 Introduction to Cable Racks...................................................................................................................7-27.1.2 Procedure for Installing the Cable Rack.................................................................................................7-47.1.3 Installing the Outdoor Cable Rack.........................................................................................................7-57.1.4 Connecting Cable Ladders.....................................................................................................................7-77.1.5 Installing the Cable Trough..................................................................................................................7-147.1.6 Installing Accessories...........................................................................................................................7-18

7.2 Installing the Grounding Bar of the NodeB..................................................................................................7-217.3 Preparing the Metal Pole...............................................................................................................................7-22

8 Preparing Auxiliary Facilities for the DBS3900 Antenna System..............8-18.1 Requirements for the Tower............................................................................................................................8-28.2 Installing the Antenna Support on the Tower.................................................................................................8-38.3 Installing the Antenna Support on the Rooftop...............................................................................................8-5

9 Requirements for NodeB Cables..............................................9-19.1 Requirements for the Materials of the Outdoor NodeB Cables......................................................................9-29.2 Cabling Specifications for the NodeB.............................................................................................................9-2

10 Checklist for the DBS3900 Site Preparation...............................10-1

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Figures

Figure 2-1 Wearing an ESD wrist strap...............................................................................................................2-5Figure 2-2 Lifting a weight................................................................................................................................2-10Figure 2-3 Slant angle........................................................................................................................................2-11Figure 2-4 One meter higher than the eave........................................................................................................2-11Figure 3-1 Space requirements of the BBU3900 in the 19-inch cabinet (unit: mm)...........................................3-3Figure 3-2 Space requirements of the BBU3900 on the wall (unit: mm)............................................................3-4Figure 3-3 Recommended space requirements of one RRU with and without the SRXU (unit: mm)................3-5Figure 3-4 Minimal space requirements of one RRU with and without the SRXU (unit: mm)...........................3-6Figure 3-5 Space requirements of two combined RRUs (unit: mm)....................................................................3-6Figure 3-6 Recommended space requirements of multiple RRUs with and without the SRXUs (unit: mm)......3-7Figure 3-7 Minimal space requirements of multiple RRUs with and without the SRXUs (unit: mm)................3-8Figure 3-8 Space requirements of the SLPU in the 19-inch cabinet (unit: mm)..................................................3-9Figure 3-9 Space requirements of the SLPU on the wall (unit: mm)...................................................................3-9Figure 7-1 Cable ladder........................................................................................................................................7-3Figure 7-2 U-shape connecting piece...................................................................................................................7-3Figure 7-3 Bracket angle......................................................................................................................................7-3Figure 7-4 Cable manager....................................................................................................................................7-3Figure 7-5 Triangular support..............................................................................................................................7-3Figure 7-6 Connecting clip...................................................................................................................................7-3Figure 7-7 Fixing clip...........................................................................................................................................7-3Figure 7-8 Cable trough.......................................................................................................................................7-3Figure 7-9 Bushing...............................................................................................................................................7-4Figure 7-10 End cover..........................................................................................................................................7-4Figure 7-11 Rectangular frame.............................................................................................................................7-4Figure 7-12 U-steel...............................................................................................................................................7-4Figure 7-13 Over-cabinet support........................................................................................................................7-4Figure 7-14 Rectangular frame.............................................................................................................................7-5Figure 7-15 Installing the outdoor cable rack on the floor...................................................................................7-6Figure 7-16 Installing the outdoor cable rack on the wall....................................................................................7-7Figure 7-17 Docking cable ladders......................................................................................................................7-9Figure 7-18 Ladders turned on the same level (no cable trough).......................................................................7-10Figure 7-19 Turning the cable ladder at different levels....................................................................................7-11Figure 7-20 Connecting the cable ladder to the wall..........................................................................................7-12

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Figure 7-21 Front connection of cable ladders...................................................................................................7-13Figure 7-22 Side connection of cable ladders....................................................................................................7-13Figure 7-23 Oblique connection of cable ladders...............................................................................................7-14Figure 7-24 Connecting cable troughs...............................................................................................................7-15Figure 7-25 Installing a cable trough on the 200-mm or 400-mm wide cable ladder........................................7-16Figure 7-26 Installing cable troughs onto the 600-mm wide cable ladder.........................................................7-16Figure 7-27 Cutting off the upper side of the triangle aperture .........................................................................7-17Figure 7-28 Installing a sloping cable trough.....................................................................................................7-17Figure 7-29 Installed sloping cable trough ........................................................................................................7-18Figure 7-30 Cable manager on the cable rack that is not installed with a cable trough.....................................7-19Figure 7-31 Cable manager on the cable rack that is installed with a cable trough...........................................7-20Figure 7-32 Installing the end cover, bushing, and baffle ring..........................................................................7-20Figure 7-33 Grounding bar of the NodeB..........................................................................................................7-21Figure 7-34 Installing the grounding bar............................................................................................................7-22Figure 7-35 Profile chart for installing the grounding bar.................................................................................7-22Figure 7-36 Installing the metal pole on the concrete floor...............................................................................7-23Figure 7-37 Two stay poles with a metal pole...................................................................................................7-24Figure 7-38 Base................................................................................................................................................7-24Figure 7-39 Two metal poles with a stay pole...................................................................................................7-24Figure 8-1 Tower for telecommunication purpose...............................................................................................8-2Figure 8-2 Structure of the antenna support (unit: mm).......................................................................................8-4Figure 8-3 Installing the antenna support on the tower........................................................................................8-5Figure 8-4 Structure of the antenna support directly installed on the rooftop......................................................8-6Figure 8-5 Installing the antenna support on the parapet (height of the parapet > 1,200 mm)............................8-7Figure 8-6 Installing the fixing clip for the antenna support on the parapet........................................................8-7Figure 8-7 Installing the antenna support on the parapet (height of the parapet < 1,200 mm)............................8-8Figure 8-8 Structure and installation of the antenna support base ...................................................................... 8-9

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Tables

Table 3-1 Climatic requirements........................................................................................................................3-13Table 3-2 Requirements for the density of physically active materials..............................................................3-14Table 3-3 Requirements for the density of chemically active materials............................................................3-14Table 3-4 Mechanical stress requirements.........................................................................................................3-14Table 4-1 Power supply requirements of the DBS3900.......................................................................................4-1Table 4-2 Requirements for the power cables of the DBS3900 configured with the APM30.............................4-2Table 4-3 Requirements for the upper-level MCB of AC input...........................................................................4-3Table 4-4 Requirements for the AC input surge protection of the DBS3900......................................................4-4Table 4-5 Requirements for the power cables of the APM30 providing power for the TMC.............................4-5Table 4-6 Requirements for the power cables of the DBS3900 configured with the PS4890.............................4-6Table 4-7 Requirements for the power cables of the DBS3900 configured with the EPS4890...........................4-6Table 4-8 Requirements for the upper-level MCB of the DBS3900 configured with the PS4890......................4-7Table 4-9 Requirements for the AC input upper-level MCB of the DBS3900 configured with the EPS4890...............................................................................................................................................................................4-7Table 4-10 Requirements for the DC input power cable of the BBU and DCDU...............................................4-8Table 4-11 Requirements for the upper-level MCB of DC input.........................................................................4-8Table 7-1 Items required for mounting a cable rack.............................................................................................7-3Table 9-1 Requirements for the materials of the outdoor NodeB cables.............................................................9-2

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About This Document

PurposeBefore installing the DBS3900 hardware, you need to conduct site survey to select an appropriatesite. This ensures proper operation of the DBS3900.This document serves as a reference for conducting the DBS3900 site survey. It describes thesite requirements in terms of the site location, power supply, transmission, grounding, andauxiliary facilities of the site and antenna system. To ensure smooth site construction, the siterequirements described in this document must be met.

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

Product Name Product VersionDBS3900 WCDMA (hereinafter referred toas DBS3900)

V200R010

Intended Audience

This document is intended for NodeB installers.

Change HistoryFor changes in the document, refer to 1 Changes in the DBS3900 WCDMA Site PreparationGuidelines.

Organization

1 Changes in the DBS3900 WCDMA Site Preparation GuidelinesThis describes the changes in the DBS3900 WCDMA Site Preparation Guidelines.2 Safety Information

3 Site Requirements of the DBS3900This describes the site requirements of the DBS3900. The proper installation, commissioning,and operation of the DBS3900 are ensured only when the installation space is planned and

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prepared in compliance with the site requirements. The site requirements consist of the siteselection, installation space, construction of the BBU3900 equipment room and the tower wherethe RRU is installed, and the operating environment requirements.4 Power Supply Requirements of the DBS3900This describes the power supply requirements of the DBS3900. To ensure the proper operationof the power system of the DBS3900, the power supply of all the functional modules mustcomply with the related specifications.5 Grounding Requirements of the DBS3900Grounding requirements of the BBU3900 and RRU in the DBS3900 system must be satisfied.6 Transmission Requirements of the NodeB SiteThis describes the transmission requirements of the NodeB. The transmission devices andauxiliary devices must be prepared before the site construction. Transmission requirements ofthe NodeB site consist of the requirements for the DDF/ODF and transmission mode.7 Preparing Auxiliary Facilities for the DBS3900 SiteThis describes how to prepare the auxiliary facilities such as the cable rack, grounding bar, andmetal pole for the DBS3900 site. Before you install the DBS3900, the auxiliary facilities mustbe prepared.8 Preparing Auxiliary Facilities for the DBS3900 Antenna SystemThis describes how to prepare the auxiliary facilities such as the tower and antenna support forthe DBS3900 antenna system in different installation scenarios.9 Requirements for NodeB CablesThis describes the requirements for materials and routing of the NodeB cables such as the powercables, signal cables, and PGND cables.10 Checklist for the DBS3900 Site PreparationThis describes how to check the NodeB site preparations. Before installing the NodeB, you needto check the site, power supply, transmission system, grounding system, antenna system,auxiliary facilities, and cables.

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

Symbol DescriptionIndicates a hazard with a high level of risk, which if notavoided,will result in death or serious injury.

Indicates a hazard with a medium or low level of risk, whichif not avoided, could result in minor or moderate injury.

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Symbol DescriptionIndicates a potentially hazardous situation, which if notavoided,could result in equipment damage, data loss,performance degradation, or unexpected results.Indicates a tip that may help you solve a problem or savetime.Provides additional information to emphasize or supplementimportant points of the main text.

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

Convention DescriptionTimes 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 ConventionsThe command conventions that may be found in this document are defined as follows.

Convention DescriptionBoldface 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 allitems can be selected.

[ x | y | ... ]* Optional items are grouped in brackets and separated byvertical bars. Several items or no item can be selected.

GUI Conventions

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

Convention DescriptionBoldface 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 OperationsThe keyboard operations that may be found in this document are defined as follows.

Format DescriptionKey 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 OperationsThe mouse operations that may be found in this document are defined as follows.

Action DescriptionClick 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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1 Changes in the DBS3900 WCDMA SitePreparation Guidelines

This describes the changes in the DBS3900 WCDMA Site Preparation Guidelines.

02 (2008-12-30)This is the first commercial release.Compared with issue 01 (2008-03-30), the following parts are modified:Part Modification4 Power Supply Requirements of theDBS3900

Power supply requirements of the DBS3900related contents are modified.

Compared with issue 01 (2008-03-30), the following parts are added:The space of RRU3805-related is added in Space Requirements of the RRU.

01 (2008-03-30)This is the initial release.

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2 Safety Information2.1 Safety Precautions

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

Following All Safety PrecautionsBefore any operation, read the instructions and precautions in this document carefully tominimize the possibility of accidents.The Danger, Caution, and Note items in the package of documents do not cover all the safetyprecautions that must be followed. They only provide the generic safety precautions foroperations.

Symbols

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

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

NOTE

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

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Complying with the Local Safety RegulationsWhen operating the device, comply with the local safety regulations. The safety precautionsprovided in the documents are supplementary. You must comply with the local safetyregulations.

General Installation RequirementsThe personnel in charge of installation and maintenance must be trained and master the correctoperating methods and safety precautions before beginning work.The rules for installing and maintaining the device are as follows:l Only the trained and qualified personnel can install, operate and maintain the device.l Only the qualified specialists are allowed to remove the safety facilities, and repair the

device.l Any replacement of the device or part of the device (including the software) or any change

made to the device must be performed by qualified or authorized personnel of Motorola.l Any fault or error that might cause safety problems must be reported immediately to the

personnel in charge.

Grounding RequirementsThe following requirements are applicable to the device to be grounded:l Ground the device before installation and remove the ground cable after uninstallation.l Do not operate the device in the absence of a ground conductor. Do not damage the ground

conductor.l The unit (or system) must be permanently connected to the protection ground before

operation. Check the electrical connection of the device before operation and ensure thatthe device is reliably grounded.

Safety of PersonnelEnsure the following:l When lightning strikes, do not operate the device and cables.l When lightning strikes, unplug the AC power connector. Do not use the fixed terminal or

touch the terminal or antenna connector.NOTE

The previous two requirements are suitable for the wireless fixed terminal.l To prevent electric shock, do not connect safety extra-low voltage (SELV) circuits to

telecommunication network voltage (TNV) circuits.l To prevent laser radiation from injuring your eyes, never look into the optical fiber outlet

with unaided eyes.l To prevent electric shock and burns, wear the electrostatic discharge (ESD) clothing, gloves

and wrist strap, and remove conductors such as jewelry and watch before operation.

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

the walls and the mounting racks.l Do not block ventilation openings while the system is running.l When installing the panel, tighten the screw with the tool.

2.2 Electricity SafetyHigh Voltage

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

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

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

l When installing the AC power supply facility, follow the local safety regulations.l When operating the AC power supply facility, follow the local safety regulations.l When operating the high voltage and AC power supply facilities, use the specific tools

instead of common tools.l When the operation is performed in a damp environment, ensure that water is kept off the

device. If the cabinet is damp or wet, shut down the power supply immediately.

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

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

High Electrical Leakage

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



2-3

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

Power Cable

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

l Before installing or removing the power cable, turn off the power switch.l Before connecting the power cable, ensure that the power cable and label comply with the

requirements of the actual installation.

Fuse

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

Electrostatic Discharge

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

In the following situations, the human body generates a static electromagnetic field:l Movement of body partsl Clothes frictionl Friction between shoes and the groundl Holding plastic in handThe static electromagnetic field will remain within the human body for a long time.Before contacting the device, plug boards, circuit boards, and application specific integratedcircuits (ASICs), wear a grounded ESD wrist strap. It can prevent the sensitive components frombeing damaged by the static electricity in the human body.Figure 2-1shows how to wear an ESD wrist strap.




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Figure 2-1 Wearing an ESD wrist strap

2.3 Inflammable Environment

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

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

2.4 BatteryStorage Battery

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

Incorrect operation of storage batteries may cause danger. During operation, ensure thefollowing:l Prevent any short-circuit.l Prevent the electrolyte from overflowing and leakage.Electrolyte overflow may damage the device. It will corrode the metal parts and the circuitboards, and ultimately damage the device and cause short-circuit of the circuit boards.



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General OperationsBefore installing and maintaining the storage battery, ensure the following:l Use special insulation tools.l Use eye protection devices and operate with care.l Wear rubber gloves and an apron in case of an electrolyte overflow.l Always keep the battery upright when moving. Do not place the battery upside down or tilt

it.

Short-Circuit

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

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

Harmful Gas

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

in fire or device corrosion.l Lay the storage battery horizontally and fix it properly.

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

High Temperature

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

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




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Acid

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

When handling a leaky battery, protect against the possible damage caused by the acid. Use thefollowing materials to absorb and neutralize acid spills:l Sodium bicarbonate (baking soda): NaHCO3l Sodium carbonate (soda): Na2CO3Antacids must be used according to the instructions provided by the battery manufacturer.

Lithium Battery

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

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

l Dispose of the used battery according to the instructions provided by the manufacturer.l Do not dispose of the lithium battery in fire.

2.5 RadiationElectromagnetic Field Exposure

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

Before installing or maintaining an antenna on a steel tower or mast with a large number oftransmitter antennas, the operator should coordinate with all parties to ensure that the transmitterantennas are shut down.The base transceiver station (BTS) has RF radiation (radiation hazard). Suggestions for theinstallation and operation of BTSs are given in the following section. Operators are also requiredto comply with the related local regulations on erecting BTSs.l The antenna should be located in an area that is inaccessible to the public where the RF

radiation exceeds the stipulated value.



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

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

Laser

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

Laser transceivers or transmitters are used in the optical transmission system and associated testtools. Because the laser that is transmitted through the optical fiber produces a small beam oflight, it has a very high power density and is invisible to human eyes. If a beam of light entersthe eye, the retina may be damaged.Normally, staring into the end of an unterminated optical fiber or broken optical fiber with theunaided eyes from a distance of more than 150 mm [5.91 in.] will not cause eye injury. Eyesmay, however, be damaged if an optical tool such as a microscope, magnifying glass or eyeloupe is used to stare into the bare optical fiber end.Read the following guidelines to prevent laser radiation:l Only the trained and authorized personnel can perform the operation.l Wear a pair of eye-protective glasses when you are handling lasers or optical fibers.l Ensure that the optical source is switched off before disconnecting optical fiber connectors.l Never look into the end of an exposed optical fiber or an open connector if you cannot

ensure that the optical source is switched off.l To ensure that the optical source is switched off, use an optical power meter.l Before opening the front door of an optical transmission system, ensure that you are not

exposed to laser radiation.l Never use an optical tool such as a microscope, a magnifying glass, or an eye loupe to look

into the optical fiber connector or end.Read the following instructions before handling optical fibers:l Only the trained personnel can cut and splice optical fibers.l Before cutting or splicing an optical fiber, ensure that the optical fiber is disconnected from

the optical source. After disconnecting the optical fiber, use protecting caps to protect allthe optical connectors.




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2.6 Working at Heights

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

When working at heights, ensure that the following requirements must be met:l The personnel who work at heights must be trained.l The operating machines and tools should be carried and handled safely to prevent them

from falling.l Safety measures, such as wearing a helmet and a safety belt, should be taken.l In cold regions, warm clothes should be worn before working at heights.l Ensure that the lifting appliances are well prepared for working at heights.

Lifting Weights

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

l Ensure that the operators have been trained and qualified.l Check the weight lifting tools and ensure that they are intact.l Lift the weight only when the weight lifting tools are firmly mounted onto the weight-

bearing object or the wall.l Use a concise instruction to prevent incorrect operation.l The angle between the two cables should be less than or equal to 90o in the lifting of weights

(See Figure 2-2).



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Figure 2-2 Lifting a weight

Safety Guide on Ladder UseChecking the Ladderl Check the ladder before using it. Check the maximum weight that the ladder can support.l Never overload the ladder.Placing the Ladder

l The slant angle is preferred to be 75o. The slant can be measured with the angle square orwith arms, as shown in Figure 2-3. When using a ladder, place the wider end of the ladderon the ground and take protective measures on the base of the ladder against slippage. Placethe ladder on a stable ground.

When climbing the ladder, ensure the following:l The gravity of the body does not shift from the edge of the ladder.l Keep balance on the ladder before performing any operation.l Do not climb higher than the fourth highest step of the ladder.If you tend to climb to the roof, the length of the ladder should be at least one meter higher thanthe eave, as shown in Figure 2-4.




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Figure 2-3 Slant angle

Figure 2-4 One meter higher than the eave

2.7 Mechanical SafetyDrilling

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



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l Before drilling a hole on the cabinet, remove the cables from the cabinet.l During the drilling, wear blinkers to protect your eyes.l During the drilling, wear the protective gloves.l Prevent the metal shavings from getting into the cabinet. After drilling, clean the metal

shavings in time.

Handling Sharp Objects

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

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

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

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

Moving Heavy ObjectsWear the protective gloves when moving heavy objects.

CAUTIONl Be careful when moving heavy objects.l When moving the chassis outwards, be aware about the unfixed or heavy objects on the

chassis to prevent injury.

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

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




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2.8 OthersInserting and Removing a Board

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

l Insert the board along the guide rail.l Avoid contact of one board with another to prevent short-circuit or damage.l Do not remove the active board before powering off.l When holding a board in hand, do not touch the board circuit, components, connectors, or

connection slots.

Bundling Signal Cables

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

Cabling RequirementsAt a very low temperature, movement of the cable may damage the plastic skin of the cable. Toensure the construction safety, comply with the following requirements:l When installing cables, ensure that the environment temperature is above 0oC.l If cables are stored in the place below 0oC, move the cables into a place at a room

temperature and store the cables for more than 24 hours before installation.l Move the cables with care, especially at a low temperature. Do not drop the cables directly

from the vehicle.



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3 Site Requirements of the DBS3900About This Chapter

This describes the site requirements of the DBS3900. The proper installation, commissioning,and operation of the DBS3900 are ensured only when the installation space is planned andprepared in compliance with the site requirements. The site requirements consist of the siteselection, installation space, construction of the BBU3900 equipment room and the tower wherethe RRU is installed, and the operating environment requirements.

NOTE

In the following section, the RRU is a generic name for the RRU3804 and RRU3805.

3.1 Site Selection Requirements of the NodeBThis describes the site selection requirements of the NodeB. To ensure the stable running of theNodeB over a long term, the site for the NodeB must meet the requirements fortelecommunication network planning, communications technology, hydrology, geology, andtraffic.3.2 Space Requirements of the DBS3900This describes the space requirements of the DBS3900. The space requirements consist of thespace requirements of the BBU3900, space requirements of the RRU, and space requirementsof the SLPU.3.3 Construction Requirements of the BBU3900 Equipment RoomThis describes the construction requirements of the equipment room in which the BBU3900 isinstalled.3.4 Requirements for the Tower Where the RRU is InstalledThis describes the requirements for the tower where the RRU is installed. To ensure the safetyof installers and equipment, the towers must meet the related construction requirements.3.5 Working Environment Requirements of the DBS3900This describes the working environment requirements of the DBS3900.

DBS3900 WCDMASite Preparation Guidelines 3 Site Requirements of the DBS3900


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3.1 Site Selection Requirements of the NodeBThis describes the site selection requirements of the NodeB. To ensure the stable running of theNodeB over a long term, the site for the NodeB must meet the requirements fortelecommunication network planning, communications technology, hydrology, geology, andtraffic.The selection of the NodeB site must meet the follows requirements:l The site is not exposed to excessive heat, dust, harmful gases, flammable or explosive

materials, or unstable voltage.l The site is not located at places that are prone to frequent earthquakes and exposed to loud

noise.l The site is far from power transformer station, industrial boiler, and heating boiler.l The site is located far from high-power radio transmitters, radar stations, or other

interference sources. The interference field intensity is not higher than the shieldingspecifications of the NodeB for useless radiation.

l The equipment room for the indoor NodeB is constructed at least 3.7 km away from theseaside or a salt lake. If this requirement cannot be met, the equipment room must beenclosed and configured with air conditioners. In addition, avoid using salt soil as thebuilding material for the room. Otherwise, the equipment that can withstand the adverseweather must be configured.

l The distance between the outdoor NodeB and the sea exceeds 500 m.l The site is away from pollution sources. If this requirement cannot be met, ensure that the

site is in the perennial upwind direction of the pollution source. The site is at least 5 km away from heavy pollution sources such as a smelting plant or

a coal mine. The site is at least 3.7 km away from medium pollution sources such as a chemical plant,

a rubber plant, or an electric plating plant. The site is at least 2 km away from light pollution sources such as a food products factory

or a leather processing factory.l The air inlets of the telecommunication equipment are far away from the sewer pipe, septic

tank, and sewage disposal pool. The equipment are in positive pressure state and free fromcorrosive gas. Otherwise, electronic components and circuit boards may corrode.

l The room for feeding poultry and the chemical fertilizer warehouse cannot be used as theequipment room for the indoor NodeB. If this requirement cannot be met, ensure that theequipment room is constructed in the perennial upwind direction of the room for feedingpoultry or the chemical fertilizer warehouse.

l The equipment room for the indoor NodeB is preferably on the second floor or higher. Ifthis requirement cannot be met, ensure that the room is located at least 600 mm above themaximum local flood level.

3.2 Space Requirements of the DBS3900This describes the space requirements of the DBS3900. The space requirements consist of thespace requirements of the BBU3900, space requirements of the RRU, and space requirementsof the SLPU.

3 Site Requirements of the DBS3900DBS3900 WCDMA



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3.2.1 Space Requirements of the BBU3900This describes the space requirements of the BBU3900. When installed in a 19-inch cabinet, theBBU3900 has the minimal space requirements for cabling and OM. In addition, Huawei offersthe recommended space requirements.3.2.2 Space Requirements of the RRU and SRXUIn different installation modes, the RRU and SRXU have the minimal space requirements forcabling and OM. Based on the engineering practice, Huawei offers the recommended spacerequirements.3.2.3 Space Requirements of the SLPUThis describes the space requirements of the SLPU. When installed in a 19-inch cabinet on awall, the SLPU has the minimal space requirements for cabling and OM. In addition, Huaweioffers the recommended space requirements.

3.2.1 Space Requirements of the BBU3900This describes the space requirements of the BBU3900. When installed in a 19-inch cabinet, theBBU3900 has the minimal space requirements for cabling and OM. In addition, Huawei offersthe recommended space requirements.

Space Requirements of the BBU3900 in the 19-Inch CabinetFigure 3-1 shows the space requirements of the BBU3900 when it needs to be installed in the19-inch cabinet.

Figure 3-1 Space requirements of the BBU3900 in the 19-inch cabinet (unit: mm)

The minimal space around the BBU3900 is as follows:l 25 mm on both sides for ventilationl 70 mm in front of the panel for cabling

Space Requirements of the BBU3900 on the WallFigure 3-2 shows the recommended space requirements when a single BBU3900 is installed onthe wall.



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Figure 3-2 Space requirements of the BBU3900 on the wall (unit: mm)

The minimal space around the BBU3900 is as follows:l 20 mm above the equipment for maintenancel 800 mm between the bottom and the ground for cabling and maintenancel 50 mm on both sides for ventilationl 600 mm in front of the equipment for maintenance

3.2.2 Space Requirements of the RRU and SRXUIn different installation modes, the RRU and SRXU have the minimal space requirements forcabling and OM. Based on the engineering practice, Huawei offers the recommended spacerequirements.

NOTE

The following figures related to the space requirements assume that the cabling cavities are on the left sideof the RRU and SRXU. If the RRU and SRXU are installed with the cabling cavities on the right, thehorizontal space requirements are opposite to what are shown in the figures.

Space Requirements of One RRU with and Without the SRXUFigure 3-3 shows the recommended space requirements of one RRU with and without theSRXU.




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Figure 3-3 Recommended space requirements of one RRU with and without the SRXU (unit:mm)

The recommended space around the equipment is as follows:l At least 500 mm under the equipment for cabling. It is recommended that the space be

1,200 mm between the bottom and the ground for easy maintenance.l At least 800 mm in front of the equipment for maintenance.l At least 200 mm above the equipment for maintenance.l At least 600 mm on the left of the equipment for maintenance.l At least 300 mm on the right of the equipment for maintenance.l Regardless of whether the SRXU is fixed to the RRU, the space requirements are the same.Figure 3-4 shows the minimal space requirements of one RRU with and without the SRXU.



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Figure 3-4 Minimal space requirements of one RRU with and without the SRXU (unit: mm)

The minimal space around the equipment is as follows:l 300 mm under the equipment for cabling. It is recommended that the space be 1,200 mm

between the equipment bottom and the ground for easy maintenance.l 600 mm in front of the equipment for maintenance.l 200 mm above the equipment for maintenance.l 400 mm on the left of the equipment for maintenance.l 100 mm on the right of the equipment for maintenance.When two RRUs need to be combined, space requirements of each RRU must be met. In addition,the space between the two RRUs should stay within the range shown in Figure 3-5.

Figure 3-5 Space requirements of two combined RRUs (unit: mm)




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The space between the two RRUs is as follows:l When two RRUs are installed horizontally, the space is 1,200 mm at most.l When two RRUs are installed vertically, the space is 800 mm at most.

NOTE

The space requirements of two combined SRXUs are the same as those of two combined RRUs.

Space Requirements of Multiple RRUs with and Without the SRXUsFigure 3-6 shows the recommended space requirements of multiple RRUs with and without theSRXUs.

Figure 3-6 Recommended space requirements of multiple RRUs with and without the SRXUs(unit: mm)

The recommended space around the equipment is as follows:l At least 500 mm under the equipment for cabling. It is recommended that the space be

1,200 mm between the bottom and the ground for easy maintenance.l At least 800 mm in front of the equipment for maintenance.l At least 200 mm above the equipment for maintenance.l At least 800 mm on the left of the equipment for maintenance.l At least 800 mm on the right of the equipment for maintenance.l Regardless of whether the SRXUs are fixed to the RRU, the space requirements are the

same.l Regardless of whether the RRUs are in two-module or three-module centralized installation

mode, the space requirements are the same.



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Figure 3-7 shows the minimal space requirements of multiple RRUs with and without theSRXUs.

Figure 3-7 Minimal space requirements of multiple RRUs with and without the SRXUs (unit:mm)

The minimal space around the equipment is as follows:l 300 mm under the equipment for cabling. It is recommended that the space be 1,200 mm

between the equipment bottom and the ground for easy maintenance.l 600 mm in front of the equipment for maintenance.l 200 mm above the equipment for maintenance.l 600 mm on the left of the equipment for maintenance.l 600 mm on the right of the equipment for maintenance.

3.2.3 Space Requirements of the SLPUThis describes the space requirements of the SLPU. When installed in a 19-inch cabinet on awall, the SLPU has the minimal space requirements for cabling and OM. In addition, Huaweioffers the recommended space requirements.

Space Requirements of the SLPU in the 19-Inch CabinetFigure 3-8 shows the space requirements of the SLPU when it needs to be installed in the 19-inch cabinet.




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Figure 3-8 Space requirements of the SLPU in the 19-inch cabinet (unit: mm)

The minimal space around the SLPU is as follows:l 25 mm on both sides for ventilationl 70 mm in front of the panel for cabling

Space Requirements of the SLPU on the WallFigure 3-9 shows the space requirements of the SLPU when it needs to be installed on the wall.

Figure 3-9 Space requirements of the SLPU on the wall (unit: mm)



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The minimal space around the SLPU is as follows:l 20 mm above the equipment for maintenancel 800 mm between the SLPU bottom and the ground for cabling and maintenancel 50 mm on both sides for ventilationl 800 mm in front of the SLPU for maintenance

3.3 Construction Requirements of the BBU3900 EquipmentRoom

This describes the construction requirements of the equipment room in which the BBU3900 isinstalled.

Requirements for the Area of the Equipment Rooml The equipment room is large enough for equipment installation and future capacity

expansion.l The feeder window is installed and feeders can be routed in the room.l Sufficient space is provided for easy installation and maintenance of the equipment.l The cabinet door can be opened and closed conveniently.

Requirements for the Height of the Equipment RoomThe height of the equipment room refers to the distance between the horizontal beam or the airvent and the floor. The room is high enough (generally 3 m to 3.5 m) to facilitate the installationof cable racks and the layout of cables and feeders.

Requirements for the Bearing Capacity of the Equipment RoomThe equipment is heavy. Thus, the architectural and structural engineers must check the bearingcapacity of the room based on the equipment weight, footprint of the equipment, installationposition, and structure of the equipment room.The bearing capacity of the equipment room floor is over 450 kg/m2. If the bearing capacity isinsufficient, reinforce the building to ensure a sufficient bearing capacity.

Requirements for the Floor of the Equipment RoomThe floor of the equipment room is semiconductor and dustproof. Generally, the movableElectrostatic Discharge (ESD) floorboards are used in the equipment room.l Floorboards are laid down firmly and there is no space between the boards. The horizontal

error per square meter is within 2 mm.l If the room does not have movable ESD floorboards, you need to use ESD floor with a

volume resistance between 1.0 x 107 ohms to 1.0 x 1010 ohms.l The ESD floor or movable floorboards are grounded by using cables and 1-megaohm

current-limiting resistance. Tests must prove that the terrazzo floor (including the concretefloor) can meet the requirement.




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l All cable holes in the floor are capped with cover plates. Positions for the holes aredetermined in compliance with the engineering design and the dimensions are accurate toensure easy installation.

Requirements for the Door and Window of the Equipment Rooml The minimum dimension of the door is 2 m (height) x 1 m (width).l The door and window are sealed with dustproof plastic tapes.l Use reflecting paper on the windowpane or colored glass for windows that are exposed to

excessive sunlight. You may block the window if the light in the room is sufficient.

Requirements for the Walls and Rooftop of the Equipment Rooml The roof and walls are durable, well insulated, and leakproof.l Waterproofing measures are taken if there are antenna poles or cable holes on the rooftop.

Ensure that the rooftop is strong enough to bear the weight of the equipment.l Lusterless paint can be used on the walls. Avoid painting the walls with paint that chalks

off easily.

Shockproof Requirements of the Equipment RoomThe equipment room is designed to resist one more degree of seismic intensity over the limitstipulated in local regulations. If this requirement is not met, reinforce the equipment room untilit meets the shockproof requirements.

Requirements for ESD and EMI Performances of the Equipment Rooml The ESD floor or movable ESD floorboards are used in the equipment room and properly

grounded.l The ESD work clothes and ESD wrist straps are provided in the equipment room.l The density of the electric field is less than 300 mV/m. The density of the magnetic field

is less than 11 GS.

Lighting Requirements of the Equipment Rooml The equipment room is not exposed to direct sunlight. Otherwise, the circuit board and

other components of the equipment room are easily deformed.l An anti-explosion lamp with soft lighting is installed in the room where the batteries are

located.l The unmanned equipment rooms are lit normally and powered by the mains.l The DC power is provided as the emergency lighting for the equipment room of heavy

traffic or great importance.

Air Conditioning Requirements of the Equipment RoomThe actual capacity of the air conditioner depends on the area of the equipment room and heatingvalues of the equipment. For details about the method of measuring the capacity, refer tocorresponding engineering design specifications.For most NodeBs, two air conditioners are configured to work alternatively. The air conditionersettings are as follows:



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l Humidity: 30% to 75%, preferably 50% to 60%l Temperature: 18 to 28, preferably 20 to 25

Fire Protection Requirements of the Equipment Rooml Telecommunication buildings are major fire protection units. Therefore, the NodeB

equipment room must be designed in compliance with the local fire protection regulations.l There is no flammable, explosive substance in the equipment room.l Fire-fighting equipment are provided in the equipment room. If there are alarm devices

such as a smoke sensor or temperature sensor, they function normally.l Sockets of different voltages in the equipment room are clearly labeled.l The holes left in the floor are capped with safe cover plates.l In addition to the alarm devices such as the fire-alarm and smoke detector, the equipment

room can also be installed with the automatic fire extinguisher. This can extinguish orcontrol the fire in the initial stage of fire. A certain number of portable fire extinguishersare provided in the corridor outside the equipment room so that they can be used in theinitial stage of the fire.

l The fire fighting pool, if equipped in compliance with the fire fighting specifications, canmeet the water demand for both inside and outside of the equipment room during the fire,assuming the fire lasts for two hours. The fire hydrant is placed in the corridors or stairwells for easy accessibility.

Requirements for the Corridor of the Equipment Rooml The width of the transporting corridor is greater than 1.5 m and the height is greater than

2.5 m.l The emergency exit is free from obstruction. The emergency exit sign is clearly visible in

the equipment room.l The height of the elevator is greater than 2.4 m.

3.4 Requirements for the Tower Where the RRU isInstalled

This describes the requirements for the tower where the RRU is installed. To ensure the safetyof installers and equipment, the towers must meet the related construction requirements.The requirements for the tower where the RRU is installed are as follows:l Engineering specifications of the tower comply with the requirements for communication

equipment installation.l There is a maintenance channel on the tower with safety design. The channel is spacious

enough to hold at least one person.l Sufficient space is provided for the RRU installation and future maintenance.l The grounding system meets the grounding requirements of the site.l A grounding bar for connecting the PGND cable of the RRU is installed. If the grounding

bar is not installed, sufficient space is provided for installing the grounding bar.




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l A cable rack is installed for the routing of the RRU cables such as the power cables andoptical cables. If the cable rack is not installed, sufficient space is provided for installingthe rack.

3.5 Working Environment Requirements of the DBS3900This describes the working environment requirements of the DBS3900.

Climatic RequirementsTable 3-1 lists the climatic requirements for the working environment of the DBS3900.

Table 3-1 Climatic requirementsItem SpecificationAltitude 4,000 mAir pressure 70 kPa to 106 kPaTemperature BBU3900: -20 to +55

RRU:l -40 to +50 (with solar radiation)l -40 to +55 (without solar radiation)

Relative humidity BBU3900: 5% to 85%RRU: 5% to 100%

Absolute humidity BBU3900: 1 g/m3 to 25 g/m3RRU: 1 g/m3 to 30 g/m3

Wind speed 67 m/sProtection degree BBU3900: IP20

RRU: IP65

Biological RequirementsThe working environment of the DBS3900 should not conducive for the growth of fungus ormildew.

Air Cleanliness RequirementsThe working environment of the DBS3900 should meet the following air cleanlinessrequirements:l There is no explosive, conductive, magneto-conductive or corrosive dust in the air.l The density of the physically active materials meets the requirements listed in Table 3-2.



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Table 3-2 Requirements for the density of physically active materialsPhysically ActiveMaterial

Unit Density

Suspended dust mg/m3 0.01Falling dust mg/(m2h) 10Sand mg/m3 There is no visible sand.Note:l Suspended dust: diameter 75 ml Falling dust: 75 m diameter 150 ml Sand: 150 m diameter 1,000 m

l The density of the chemically active materials meets the requirements listed in Table3-3.

Table 3-3 Requirements for the density of chemically active materialsChemically ActiveMaterial

Unit Density

SO2 mg/m3 1.50

NH3 mg/m3 0.15

Cl2 mg/m3 0.30

Mechanical Stress RequirementsTable 3-4 lists the mechanical stress requirements for the working environment of theDBS3900.

Table 3-4 Mechanical stress requirementsItem Subitem SpecificationSinusoidalvibration(ETSIrequirements)

Offset 3.5 mm -Acceleration - 10.0 m/s2

Frequency range 2 Hz to 9 Hz 9 Hz to 200 HzSinusoidalvibration(GR63requirements)

Frequency range: 5-100-5 Hz; acceleration: 1.0 x g; scanningfrequency: 0.25 oct/min; triaxial test

Unsteady impact Impact responsespectrum II

100 m/s2

Static payload 0




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Item Subitem SpecificationAnti-seismicrequirements

Earthquake Frequency range: 0.3 Hz to 50 HzZero Period Acceleration (ZPA): 1.5 x g30s

Note:l Impact response spectrum refers to the maximum acceleration response curve generated

by the equipment under the specified impact excitation. Impact response spectrum II meansthat the duration of semi-sine impact response spectrum is 6 ms.

l Static payload refers to the capability of the equipment in a packing case to bear the pressurefrom the top in normal pile-up method.



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4 Power Supply Requirements of the DBS3900About This Chapter

This describes the power supply requirements of the DBS3900. To ensure the proper operationof the power system of the DBS3900, the power supply of all the functional modules mustcomply with the related specifications.Table 4-1 lists the power supply requirements of the DBS3900.

Table 4-1 Power supply requirements of the DBS3900Functional Moduleof the DBS3900

Rated Voltage Voltage Range

BBU3900 -48 V DC+24 V DC

-38.4 V DC to -57 V DC+21.6 V DC to +29 V DC

RRU -48 V DC -36 V DC to -57 V DC

NOTE

If the voltage stability does not meet the requirements, you need to use voltage regulators to ensure a properpower voltage range.

4.1 Requirements for the Power System of the DBS3900 in Outdoor CoverageThe outdoor coverage of the DBS3900 means that the power system, RRU, BBU, and antennaare used outdoors. Currently, the DBS3900 supports the AC power input and DC power input.4.2 Requirements for the Power System of the DBS3900 in Indoor CoverageThe indoor coverage of the DBS3900 means that the power system, RRU, BBU, and antennacan be used indoors. In this condition, the DBS3900 supports the AC power input and DC powerinput.

DBS3900 WCDMASite Preparation Guidelines 4 Power Supply Requirements of the DBS3900


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4.1 Requirements for the Power System of the DBS3900in Outdoor Coverage

The outdoor coverage of the DBS3900 means that the power system, RRU, BBU, and antennaare used outdoors. Currently, the DBS3900 supports the AC power input and DC power input.

4.1.1 Requirements for the AC Power System of the DBS3900 in Outdoor CoverageWhen the DBS3900 uses AC power supply, it supports three power input modes: 220 V ACsingle-phase input, 110 V AC dual-live input, and 220 V AC three-phase input.4.1.2 Requirements for the DC Power System of the DBS3900 in Outdoor CoverageWhen the DBS3900 uses DC power supply, it supports -48 V DC input. The working voltagefor the BBU3900 is from -38.4 V DC to -57 V DC, and the working voltage for the RRU is from-36 V DC to -57 V DC.

4.1.1 Requirements for the AC Power System of the DBS3900 inOutdoor Coverage

When the DBS3900 uses AC power supply, it supports three power input modes: 220 V ACsingle-phase input, 110 V AC dual-live input, and 220 V AC three-phase input.

Requirements for the AC Input Power CablesIf the color of the power cables is stipulated in the local standards, see the local standards. Table4-2 lists the requirements for the power cables when the DBS3900 is configured with the APM30.

Table 4-2 Requirements for the power cables of the DBS3900 configured with the APM30ProductConfiguration

Type of InputVoltage

Cable Materials Cross-SectionalArea

l 3 x 2l 30 W per carrierl Power backup for

8 hours

110 V AC dual-live-wire

Copper 10 AWG(purchased on thelocal market)

220 V AC single-phase

Copper 6 mm 2

220 V AC three-phase

Copper 2.5 mm 2

4 Power Supply Requirements of the DBS3900DBS3900 WCDMA



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NOTE

l The input power cables of the APM30 are delivered by Huawei. When the 110 V AC dual-live inputor 220 V AC single-phase input is used, the 10 m power cables with a cross-sectional area of 6 mm2 are delivered by default. When the 220 V AC three-phase input is used, the 10 m power cables witha cross-sectional area of 2.5 mm 2 are delivered by default. If specific data of the engineering surveyis provided, make the cables on site.

l When the remote AC power is required for the APM30 and the fluctuation of the electricity networkis within 220 V 15%: Use the power cables with a cross sectional area of 6 mm 2 for the 110 V ACdual-live input. The maximum remote distance is 90 m. Use the power cables with a cross sectionalarea of 2.5 mm 2 for the 220 V AC three-phase input. The maximum remote distance is 100 m.

Requirements for the Upper-Level MCB of the AC InputWhen the DBS3900 uses the AC power supply, the AC input power cables should be configuredwith the AC input MCB before leading into the power cabinet. The MCB is usually in the ACpower distribution box on site. You should choose the MCBs based on the quantity of theDBS3900 cabinets and corresponding power supply modes. If the capacity of the MCB provideby the client window does not meet the specifications, replace the MCB in advance. Table4-3 lists the requirements for the upper-level AC input MCB.

Table 4-3 Requirements for the upper-level MCB of AC inputType of Input Voltage Requirements for the AC Upper-Level

MCB110 V AC dual-live-wire 25 A/2 pole to 32 A/2 pole; recommended

value: 25 A/2 pole, 1 PCS220 V AC single-phase 25 A/1 pole to 32 A/1 pole; recommended

value: 25 A/1 pole, 1 PCS or 25 A/2 pole220 V AC three-phase 10 A/3 pole to 16 A/3 pole; recommended

value: 10 A/3 pole, 1 PCS

NOTE

l The previous mentioned requirements for the upper-level MCB are used without consideration ofthe transmission power.

l If the transmission power is 200 W, choose a 32A MCB for the 110 V AC dual-live input, and a 10A/3 pole MCB for the 220 V AC dual-live input.

l When the 110 V AC dual-live-wire input is used, the 2 pole switch is required to control the L1 andL2.

Requirements for AC Input Surge ProtectionCurrently, the DBS3900 is configured with the APM30, Table 4-4 lists the requirements for thesurge protection of the DBS3900.



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Table 4-4 Requirements for the AC input surge protection of the DBS3900AC Power Supply Mode Surge Protection Specifications of

the APM30110 V AC dual-live-wire 60 kA220 V AC single-phase 60 kA220 V AC three-phase 60 kA

NOTE

When the 110 V AC dual-live input is used, the protection levels of the surge protectors for the 110 V ACdual-live input are the same as that for the 220 V AC dual-live input; however, the components of the surgeprotectors are different. The surge protectors are installed according to power supply mode when delivering.

AC Power BackupIf there is no AC mains input or the condition of the local electricity network is unsatisfactory,you are advised to use the diesel generator on the site for AC power back up so that the NodeBcan work properly and the life cycle of the batteries is extended.When the 110 V AC dual-live input or 220 V AC single-phase input is used, you are advised touse the single-phase diesel generator. When the 220 V AC three-phase input is used, you areadvised to use the three-phase diesel generator. Note to avoid the unbalance of the three phases.

4.1.2 Requirements for the DC Power System of the DBS3900 inOutdoor Coverage

When the DBS3900 uses DC power supply, it supports -48 V DC input. The working voltagefor the BBU3900 is from -38.4 V DC to -57 V DC, and the working voltage for the RRU is from-36 V DC to -57 V DC.

Requirements for DC Power Cables of the RRU1. Power cables of the RRU

The maximum cross-sectional area of the shielded power cables supported by the RRU is3.3 mm 2 or 4 mm 2.

2. Remote distanceIf the power-off voltage is 44 V and the cross-sectional area of the shielded power cablesis 3.3 mm 2, the maximum remote distance of the RRUs is 95 m. If the power-off voltageis 44 V and the cross-sectional area of the shielded power cables is 4 mm 2, the maximumremote distance of the RRUs is 115 m.

Requirements for the Power Cables of the APM30 Providing Power for the TMCWhen the DBS3900 is configured with the transmission cabinet, the APM30 is used to provideDC power to the transmission cabinet. Table 4-5 lists the specifications of the power cables.




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Table 4-5 Requirements for the power cables of the APM30 providing power for the TMCPower SupplyVoltage

CorrespondingAPM30 MCB

Restrictionon theDistanceBetween theTransmissionEquipment andthe APM30

Power CableRequirement

Remarks

-48 V DC 20 A L 5 m 6 mm 2 to 25 mm

2

Connect theTMC to 20 ALLVD MCBs,and disable theBLVD functionof the battery.The input powercable of thebuilt-inDCDU-03A ofthe TMC has across-sectionalarea of 6 mm 2.The input powercable of thebuilt-inDCDU-03C ofthe TMC has across-sectionalarea of 25 mm2.

4.2 Requirements for the Power System of the DBS3900in Indoor Coverage

The indoor coverage of the DBS3900 means that the power system, RRU, BBU, and antennacan be used indoors. In this condition, the DBS3900 supports the AC power input and DC powerinput.

4.2.1 Requirements for the AC Power System of the DBS3900 in Indoor CoverageWhen the DBS3900 uses AC power supply, the DBS3900 supports three power input modes:110 V AC dual-live input, 220 V AC single-phase input, and 220 V AC three-phase input.4.2.2 Requirements for the DC Power System of the DBS3900 in Indoor CoverageWhen the DBS3900 uses DC power supply, it supports -48 V DC input. The permissible workingvoltage for the BBU3900 is from -38.4 V DC to -57 V DC, and the working voltage for the RRUis from -36 V DC to -57 V DC.



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4.2.1 Requirements for the AC Power System of the DBS3900 inIndoor Coverage

When the DBS3900 uses AC power supply, the DBS3900 supports three power input modes:110 V AC dual-live input, 220 V AC single-phase input, and 220 V AC three-phase input.

Requirements for the AC Input Power CablesIn the indoor application scenario, if the operator can only provide AC power supply, theEPS4890 power system or the PS4890 power cabinet is required. If the power backup is required,select the indoor power cabinet PS4890. If the power backup is not required, select the EPS4890power system.Table 4-6 lists the requirements for the input power cables of the DBS3900 configured with thePS4890 when power backup is required.

Table 4-6 Requirements for the power cables of the DBS3900 configured with the PS4890ProductConfiguration



l 3 x 2l 30 W per carrierl Power backup for

8 hours


Copper 10 AWG(purchased on thelocal market)


Copper 6 mm 2


Copper 2.5 mm 2

NOTE

The PS4890 can hold a battery with maximum capacity of 184 AH.

Table 4-7 shows the requirements for the input power cables of the DBS3900 configured withthe EPS4890 when the power backup is not required.

Table 4-7 Requirements for the power cables of the DBS3900 configured with the EPS4890ProductConfiguration



l 3 x 2l 30 W per carrier


Copper 10 AWG(Purchased on thelocal market)


Copper 6 mm 2


Copper 2.5 mm 2




Issue 02 (2009-01-05)

Requirements for the Upper-Level MCB of AC InputWhen the AC power supply is used by the DBS3900, the AC input power cables should beconfigured with the AC input MCB before leading into the power cabinet. The MCB is usuallyin the AC power distribution box on site. Choose the MCBs based on the quantity of theDBS3900 cabinets and corresponding power supply modes. If the capacity of the MCB provideby the client window does not meet the specifications, replace the MCB in advance.Table 4-8 lists the requirements for the upper-level MCB of the DBS3900 configured with thePS4890.

Table 4-8 Requirements for the upper-level MCB of the DBS3900 configured with the PS4890Type of Input Voltage Requirements for the AC Upper-Level



value: 25 A/1 pole, 1 PCS or 25 A/2 pole220 V AC three-phase 8 A/3 pole to 16 A/3 pole; recommended

value: 8 A/3 pole, 1 PCS

Table 4-9 lists the requirements for the AC input upper-level MCB of the DBS3900 configuredwith the EPS4890.

Table 4-9 Requirements for the AC input upper-level MCB of the DBS3900 configured withthe EPS4890Product Configuration Requirements for the AC Upper-Level



value: 10 A/1 pole, 1 PCS or 10 A/2 pole220 V AC three-phase 3 A/3 pole to 6 A/3 pole; recommended value:

3 A/3 pole, 1 PCS

4.2.2 Requirements for the DC Power System of the DBS3900 inIndoor Coverage

When the DBS3900 uses DC power supply, it supports -48 V DC input. The permissible workingvoltage for the BBU3900 is from -38.4 V DC to -57 V DC, and the working voltage for the RRUis from -36 V DC to -57 V DC.

NOTE

The DCDU and BBU are both installed in the TMC.



4-7

Requirements for the DC Input Power Cable of the BBU and DCDUTable 4-10 lists the requirements for the input power cables when the BBU and DCDU use DCpower supply.

Table 4-10 Requirements for the DC input power cable of the BBU and DCDUCapacityConfiguration


Cables Cross-SectionalArea

PermissibleDistanceBetween thePower Cabinetof Operatorsand the DCDU

3 x 2 -48 V DC Copper 16 mm 2 L 5 m

NOTE

The transmit power of the RRU is 30 W per carrier.NOTE

l In the indoor environment, if the distance between the DCDU and the power cabinet is longer than5 m, the remote distance of the RRU is reduced. If the distance between the DCDU and the powercabinet is less than 10 m, the remote distance of the RRU reaches up to 90 m.

l If the DCDU is installed in the TMC outdoors and the power cables are routed on the ground, thedistance between the DCDU and the power cabinet is less than 5 m. If the power cables are routedthrough metal tubes, the distance between the DCDU and the power cabinet is longer than 5 m;however, the remote distance of the RRU is reduced.

Requirements for the DC Input Power Cable of the RRU1. The DC input power cables of the RRU

The maximum cross-sectional area of the shielded power cables used by the RRU is 3.3mm 2 or 4 mm 2.

2. Remote distanceWhen the non-Huawei power supply system is used and the minimum input voltage is 44V, if the cross-sectional area of the shielded power cables is 3.3 mm 2, the maximum remotedistance of the RRU is 95 m. If the cross-sectional area of the shielded power cables is 4mm 2, the remote distance of the RRU is 115 m.

Requirements for the Upper-Level MCB of DC InputTable 4-11 lists the requirements for the upper-level DC input MCB.

Table 4-11 Requirements for the upper-level MCB of DC inputType of Input Voltage Requirements for the DC Upper-Level

MCB-48 V DC 40 A/1 pole to 50 A/1 pole, 1 PCS




Issue 02 (2009-01-05)

NOTEThe pole refers to the number of the switches that can be controlled simultaneously by the handle.



4-9

5 Grounding Requirements of the DBS3900Grounding requirements of the BBU3900 and RRU in the DBS3900 system must be satisfied.

Grounding Requirements of the BBU3900l The green and yellow PGND cable of the BBU3900 must be copper-based and plastic-

insulated with the cross-sectional area no less than 6 mm2.l The grounding resistance of the BBU3900 is less than 10 ohms.l When the BBU3900 is installed in the equipment room, the PGND cable of the

BBU3900 is connected to the protection grounding bar of the equipment room.l When the BBU3900 is installed in outdoor cabinets such as the APM30 or the APM100,

the PGND cable of the BBU3900 is connected to the

DBS3900 WCDMA Site Preparation Guidelines(V200_02)1.pdf

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