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Installing BBU 6102
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Copyright
© Ericsson AB 2010. All rights reserved. No part of this document may bereproduced in any form without the written permission of the copyright owner.
Disclaimer
The contents of this document are subject to revision without notice due tocontinued progress in methodology, design and manufacturing. Ericsson shallhave no liability for any error or damage of any kind resulting from the useof this document.
Trademark List
Roxtec is a trademark of Roxtec AB
Northstar is a trademark of NorthStar Battery Company LLC
All trademarks mentioned herein are the propertyof their respective owners. These are shown in thedocument Trademark Information.
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Contents
Contents
1 Introduction 1
1.1 Target Groups 1
2 Preconditions 3
2.1 Safety Information 3
2.2 BBU Installation Accessories 5
2.3 Tools 5
2.4 Documentation 6
3 Installation Procedure 7
3.1 Preparing the BBU 6102 8
3.2 Installing the BBU 6102 11
3.3 Installing the Battery Shelf 14
3.4 Installing the Earth Grounding Cable in the BBU Cabinet 16
3.5 Installing the Conduit Box 19
3.6 Installing the RBS 21
3.7 Installing the Earth Grounding Cable between RBS andBBU 6102 22
3.8 Routing and Installing External Cables for the RBS andthe BBU 6102 22
3.9 Installing the Cooling System 25
3.10 Routing and Connecting Power Cables to Extension BBSCabinet and Installing the Fuse 29
3.11 Installing the Batteries 33
4 Completing the Installation 47
4.1 Environment 47
5 Commissioning 49
5.1 Indicators of the Climate System Controller 49
5.2 Direct Air Cooling Unit 50
5.3 Active Cooling Unit 51
Glossary 53
Reference List 55
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Introduction
1 Introduction
This document describes the following:
• Installing Battery Backup Unit 6102 (BBU 6102)
• Routing cables through the lead-in on the side of the BBU
• Connecting batteries and cables to the RBS
1.1 Target Groups
The target groups for these instructions are the personnel involved in the radiosite installation engineering process and those responsible for the installation,integration, and maintenance of an RBS site.
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Preconditions
2 Preconditions
This chapter contains information on the tools, documentation, and conditionsrequired before starting the installation procedure.
Before starting with the installation of the BBU, ensure that the followingconditions are met and that the tools and documents specified are available.
When designing a pad or supporting structure, be sure to account for themaximum weight of the cabinet. The total maximum weight for both RBScabinet and BBU cabinet is 900 kg.
The cabinet must be first fastened to the foundation, using screws and plugssuitable for the foundation material.
• Site Installation Documentation (SID)
• Tools needed for the installation
• Plugs and screws to fasten the BBU to the ground
• The set of materials included with the BBU
• Batteries and optional BBU equipment specified for the site
• T-handle to open the door
Required DC Cables
All DC power cables must be minimum 50 mm² (1 AWG) with a minimum ratingof 300 V DC, 90�C.The required cable dimension must be chosen as for theactual installation made, for example bigger cable size needed in order to copewith the maximum voltage drop and cable length allowed to served externalRBS or BBS.
2.1 Safety Information
Installation personnel should exercise care when working on or around electricalequipment. In addition to this safety information, the specific safety instructionsfor all products involved in the installation procedure should be adhered to.
The Ericsson product information includes the following safety information:
124 46–2885, Personal Health and Safety Information
124 46–2886, System Safety Information
All external circuits to be connected to the power supply system must complywith SELV, as defined in EN 60950.
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When work is being done in a power cabinet, the power supply system mustbe de-energized. The mains supply and, if applicable, all batteries must bedisconnected.
Stop!
Do not install or modify AC or DC powered equipment unless you are aqualified and authorized electrician. Improper installation work can seriouslydamage the equipment.
Warning!
High energy levels are present in this unit. Improper handling of the unit canlead to short-circuiting that can result in serious injury. Exercise care whenworking with this unit.
Caution!
Improper handling of batteries can result in the batteries short-circuiting, whichcan result in serious injury due to high energy levels. Exercise the necessarycare when working with batteries.
Caution!
Batteries can leak electrolyte if improperly handled. Electrolyte in contactwith skin or eyes can cause injury. In the event of electrolyte injuries, rinsethe affected area with water and seek medical attention immediately. Useprotective equipment when replacing batteries.
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Preconditions
Caution!
Excessive heat can cause battery casing to soften and warp, potentiallyallowing acid to escape. In contact with the skin, acid can cause injury, and ifbreathed in, can affect the airways. Use protective equipment when replacingbatteries. Before starting the installation, see Chapter Personal Health andSafety in the installation instruction for the specific RBS.
2.1.1 Approved Disconnector
Note: An adequate disconnect device shall be provided, internally orexternally, in each supply circuit.
2.2 BBU Installation Accessories
Table 1 lists the BBU installation accessories delivered together with the BBUcabinet.
Table 1 Installation Accessories
Item Quantity
Battery straps 8 pieces
RBS temperature sensor cable 1 piece
Roxtec lubricant 1 piece
Hardware for installation of batteryshelf - M8 screws
6 pieces
Hardware for installation of batteryshelf - M8 washers
6 pieces
2.3 Tools
Table 2 specifies the tools and equipment required for the BBU installation:
Table 2 Required Tools
Product Description Product No.
Hammer drill 230 V AC or cordless LTT 601 146/1
or
LTT 601 147/1
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Installing BBU 6102
Personal tool set
or
Personal tool kit, light
Personal tools LTT 601 135/1
or
LTT 601 156/1
Torque set 5–25 Nm LTT 601 140/1
Torque set 20–100 Nm LTT 601 141/1
Torque set Torque wrench, isolated,open-ended
LTT 601 157/1
T-handle SXK 107 2465/1
Lifting devices:
• Lifting eye nuts
• Socket set screws
• Flat washers
4 pieces each:
• M12, C 15, DIN 582
• M12 x 35 mm, DIN 914
• M12, DIN 125 A
Lubricant Locally supplied
Table 3 is a summary of the torque values specified to fasten vital parts duringthe installation.
Table 3 Equipment Torque Values
Description Torque
BBU cabinet to the foundation 80.0 Nm
RBS cabinet to the BBU cabinet 80.0 Nm
Battery shelf 20.0 Nm
Intercell connectors 8.0 Nm
Battery cables to batteries 8.0 Nm
Fuse to the fuse connecting bar 15.0 Nm
Battery cables to fuse 15.0 Nm
Earth grounding cable, �48 V DC cable and 0 V DCcable
15.0 Nm
2.4 Documentation
See Reference List on page 55 for the documents and manuals available.
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Installation Procedure
3 Installation Procedure
This chapter contains instructions for installing the BBU.
Note: Before starting the installation, see Section 2.1 on page 3 and theinstallation instruction for the specific RBS.
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Figure 1 BBU Installation Work Process
3.1 Preparing the BBU 6102
Before the BBU can be installed some preparation is required:
1. Remove the BBU cabinet carefully from the package.
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Installation Procedure
Note: Be careful in order not to damage the top and bottom gasket installedon the BBU cabinet, while lifting the cabinet: When using the liftingdevices do not fasten the screws too hard. Do not drag the cabinet onthe ground or floor. See Figure 2 for top and bottom gasket.
Figure 2 Top and Bottom Gasket and Mounting Holes
2. Slide the lock cover and open the door with the T-handle.
3. Lift and remove the door from the BBU opening and set the door aside in asafe location, in order to avoid scratching; see Figure 3.
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Figure 3 Opening and Removing the Door
4. Remove the upper insulation plate and set the insulation plate aside in asafe location, in order to avoid damaging; see Figure 4.
Figure 4 Removing Upper Insulation Plate
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Installation Procedure
3.2 Installing the BBU 6102
When designing a pad or supporting structure, be sure to account for themaximum weight of the cabinet. The total maximum weight for both RBScabinet and BBU cabinet is 900 kg.
The cabinet must be first fastened to the foundation, using screws and plugssuitable for the foundation material.
1. Use the Site Installation Documentation (SID) to decide where to positionthe cabinet.
2. Mark the position of four holes; see Figure 5.
Figure 5 Measurements for Hole Positions
Note: The eye protectors and ear muffs included in the Tool Set for RBSInstallation must be used during the drilling operation; see Figure 6.
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Figure 6 Ear Muffs and Eye Protectors
3. Drill the mounting holes in the floor and insert plugs or screws into eachhole. Use the drill gauge fitted to the hammer drill to regulate the depthof each hole; see Figure 7.
Note: Clear the pad of any dirt or debris before installing the BBU.
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Installation Procedure
Figure 7 Drilling Holes
4. Lift the BBU cabinet carefully and place the cabinet on the foundation.
Note: Be careful in order not to damage the top and bottom gasket installedon the BBU cabinet, while lifting the cabinet: When using the liftingdevices do not fasten the screws too hard. Do not drag the cabinet onthe ground or floor. See Figure 2 for top and bottom gasket.
5. Position the BBU over the drilled holes.
6. Remove the climate system rail; see Figure 8.
7. Remove 4 insulation sponge plugs; see Figure 8.
8. Level the BBU cabinet.
9. Place the screws in the holes and tighten the BBU cabinet screws firmly tosecure the BBU; see Table 3 for the correct torque.
10. Place the insulation sponge plugs over the screws; see Figure 8.
11. Put back the climate system rail; see Figure 8.
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Figure 8 Removing the Climate System Rail, Insulation Sponge Plugs
3.3 Installing the Battery Shelf
The battery shelf comes equipped either with or without the optional Heater.
Install the battery shelf as follows:
1. Place the battery shelf in the cabinet; see Figure 9 and tighten the batteryshelf screws firmly to secure the shelf; see Table 3 for the correct torque.
Note: Make sure that the battery shelf is in the right position; see Figure 9.
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Figure 9 Removal of Screws and the Battery Clamp
2. Follow this step, if the battery shelf with the heater is installed. Route thecable and strap the cable as shown in Figure 10.
3. Remove the three screws of the battery clamp from the top and remove thebattery clamp; see Figure 9.
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Figure 10 Routing the Cable from the Battery Shelf with Heater
3.4 Installing the Earth Grounding Cable in the BBUCabinet
This section describes how the earth grounding cable for the RBS and the BBUis routed through the Roxtec cable lead-in and installed.
The cabinet is equipped with one Roxtec cable entry through the left back sideof the cabinet. The BBU can have three additional cable entries installed on theright or left-hand side wall of the unit (up to two per side).
There is a possibility to reconfigure the pre-installed Roxtec cable entry, whichis installed on the left back side of the cabinet, by removing one of the threedummy plates. It is also possible to install additional Roxtec cable entriesdepending on the number of cables and on which side of the BBU they are tobe installed.
Roxtec cable entries are available with four different configurations of rubbermodules.
There is also a possibility to install the conduit box. Drilling marks are providedon the left back side and the right back side of the cabinet; see Section 3.5on page 19.
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Installation Procedure
3.4.1 Reconfiguration of Roxtec Cable Entry
Follow the steps below and see also the Roxtec installation instruction.
1. Remove the dummy plate; see Figure 11.
2. Unfasten the pre-installed Roxtec cable entry from the outside of thecabinet.
3. Fasten the removed dummy plate in the place of the Roxtec cable entry.
4. Fasten the Roxtec frame to the BBU cabinet.
Figure 11 Dummy Plate
3.4.2 Routing Cables through Roxtec Cable Entry
Follow the steps below and see also the Roxtec installation instruction.
1. Unfasten the pre-installed Roxtec cable entry from the outside of thecabinet; see Figure 12.
2. Loosen the rubber modules by untightening one screw; see Figure 12.
3. Push out all the rubber modules from the outside of the frame; see Figure12.
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Figure 12 Roxtec Cable Entry Frame with Rubber Modules
3.4.3 Installation of the Earth Grounding Cable
1. Route the earth grounding cable from the site MET through the Roxtecframe. Do not fasten back the Roxtec frame, yet.
2. Route the earth grounding cable from the site MET through open cableentry to the earth terminal in the BBU cabinet; see Figure 13.
3. Connect the earth grounding cable to the earth terminal in the BBU; seeFigure 13. Tighten the earth grounding cable; see Table 3 for the correcttorque.
4. Strap the cable to the management rack.
5. Leave the cable loose inside the BBU cabinet in order not to damage thecable while installing the RBS cabinet.
Note: Before installing the RBS it is recommended to install all the cablesexcept for RF cables; see Section 3.8 on page 22.
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Installation Procedure
Figure 13 Installing the Earth Grounding Cable
3.5 Installing the Conduit Box
This section describes the installation of optional conduit box.
1. To install the optional conduit box, remove the dummy plate from the rightback side; see Figure 14 or a Roxtec cable entry from the left back side.
2. Remove four screws that hold the dummy plate or the Roxtec cable entryform the outside.
3. Remove the knock-out holes in the conduit box by using the hammer orhandy tool.
4. Install the correct watertight fittings. See the watertight fitting instruction.
5. Route the cables through the knock-out holes to the destination.
6. Seal the watertight fittings according to the instruction provided with thefittings.
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Installing BBU 6102
Figure 14 Dummy Plates
7. Fasten the optional conduit box to the side of the cabinet. Drilling marks areprovided on the left back side and the right back side of the BBU cabinet.See Figure 15.
Figure 15 Mounting the Conduit Box
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Installation Procedure
3.6 Installing the RBS
This section provides the instructions for installing the RBS on top of the BBU.
Install the RBS according to the RBS installation instructions. Refer to theinstallation documentation for the specific RBS; see Reference [8] andReference [9].
The set of materials to fasten the RBS to the BBU is included in the RBS.
Note: Make sure the cables installed before the installation of the RBScabinet are inside the BBU cabinet while installing the RBS cabinet.Unstrap also all the cables, which are situated on the managementrack. Leaving the cables on the BBU cabinet may cause the damage tothe cables.
1. Use the guiding corner in the rear right corner of the BBU cabinet and thetop gasket to put the RBS cabinet in the correct position; see Figure 16.
Note: Make sure the bottom of the RBS will totally cover and match the topgasket of the BBU cabinet.
Figure 16 Guiding Corner
2. Place the RBS on the BBU; see Figure 17.
Note: Be careful in order not to damage the top gasket installed on the BBUcabinet, while putting the RBS cabinet on the BBU cabinet.
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3. Fasten and tighten the RBS cabinet using 4 screws, supplied with the RBS,see Table 3 for the correct torque.
Note: Apply a lubricant on screws (locally supplied) to reduce friction andcross-threading while attaching the RBS to the BBU.
Figure 17 Installation of the RBS
3.7 Installing the Earth Grounding Cable between RBSand BBU 6102
1. Route the earth grounding cable from the earth terminal in the BBU cabinetto the earth terminal in the RBS cabinet.
2. Connect the earth grounding cable to the earth terminal in the RBS cabinet.See the RBS installation instruction.
3.8 Routing and Installing External Cables for the RBSand the BBU 6102
This section describes routing and connection of BBU external cables:
To connect the cables to the RBS, see separate installation instruction forthe RBS.
The battery power cables are connected to the RBS through the PowerConnection Filter (PCF) in the RBS.
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Installation Procedure
The PCF is located in the RBS above the left side of the BBU. The PCF iseither already installed in the RBS, or should be installed at site. For installationinstructions of the PCF; see Reference [8].
Table 4 shows the external cables described in this section.
Table 4 External Cables
No. External Cables
1 �48 V DC
2 0 V DC
3 AC Power Cable
4 RF cables
3.8.1 Connecting �48 V DC Cable Between RBS and BBU Cabinets
Route and connect the �48 V DC cable as follows:
1. Strip the insulation from the �48 V DC cable.
2. Unfasten and remove the cover plate of the fuse connecting bar in theBBU cabinet.
3. Connect the �48 V DC cable to the fuse in the BBU cabinet; see Figure 18Tighten the cable; see Table 3 for the correct torque.
4. Pull the �48 V DC cable through the connection field in the BBU cabinetto the RBS cabinet as shown in Figure 18 and connect the power cablein the RBS cabinet.
5. Strap the �48 V DC cable to the management rack.
6. If there is no need to install any more cables to the fuse connecting barfasten back the cover plate of the fuse connecting bar.
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Installing BBU 6102
Figure 18 Routing of the Earth Grounding Cables, the �48 V DC Cable, 0 VDC Cable, AC Power Cable and RF Cables
3.8.2 Connecting 0 V DC Cable Between RBS and BBU Cabinets
Route and connect the 0 V DC cable as follows:
1. Strip the insulation from the 0 V DC cable.
2. Connect the 0 V DC cable to the 0 V bus-bar in the BBU cabinet. Tightenthe cable; see Table 3 for the correct torque.
3. Pull the 0 V DC cable through the connection field in the BBU cabinet tothe RBS cabinet as shown in Figure 18 and connect the 0 V DC cablein the RBS cabinet.
4. Strap the 0 V DC cable to the management rack.
3.8.3 Connecting the AC Power Cable Between the RBS and BBUCabinets
Route and connect the AC cable as follows:
1. Pull the AC power cable through the Roxtec frame. Do not fasten backthe Roxtec frame, yet.
2. Pull the AC power cable through the open cable entry over the top of thecable management rack as shown in Figure 18 and connect the AC powercable in the RBS cabinet.
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Installation Procedure
3. Strap the AC power cable to the management rack.
3.8.4 Routing RF Cables through the BBU Cabinet to the RBS
Note: Minimum bending radius of RF cables is 127 mm. It is recommendedto route RF cables through the Roxtec cable entry further most awayfrom the RBS RF cable inlet.
1. Route each RF cable through the Roxtec frame. Do not fasten back theRoxtec frame, yet.
2. Pull each RF cable through the open cable entry over the top of the cablemanagement rack as shown in Figure 18 and connect the RF cable inthe RBS cabinet.
3. Strap the RF cable to the management rack.
Note: If there is a need to install extension BBS do not seal the cable entry,yet. If there is no need to install the extension BBS, seal the cableentry, see Section 3.10 on page 29
3.9 Installing the Cooling System
Note: Remove the air bubble film from the dampers in the Direct Air CoolingUnit, before installation.
1. Align the cooling unit with the rails provided as shown in Figure 19.
2. Slide in the cooling unit halfway.
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Figure 19 Installing the Cooling Unit
3. Connect the alarm cable to the climate system controller.
• Direct Air Cooling Unit: See Figure 20 and Figure 22
• Direct Air Cooling Unit: See Figure 21 and Figure 22
4. Connect the power cable to the climate system controller.
• Direct Air Cooling Unit: See Figure 20 and Figure 22
• Direct Air Cooling Unit: See Figure 21 and Figure 22
5. If the battery shelf is with heater attach the heater cable to the climatesystem controller.
• Direct Air Cooling Unit: See Figure 20 and Figure 22
• Direct Air Cooling Unit: See Figure 21 and Figure 22
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Installation Procedure
Figure 20 Direct Air Cooling Unit Cable Connection
Figure 21 Active Cooling Unit Cable Connection
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Figure 22 Inserting Cables
6. Press the cooling unit so that the drainage pipes enter into the condensedwater outlets in the back of the cabinet. Make sure that the drainage pipesare not exceeding beyond the outer surface of the cabinet; see Figure 23.
7. If there is a need to attach the hoses to the drainage pipes press the coolingunit so that the drainage pipes are close to the condensed water outletsand then attach the hoses.
Note: When installing the hoses to the drainage pipes make sure that waterexits the pipes easily.
8. Fasten the latch.
9. Route the cables to the left in order to avoid collision with the upperinsulation plate.
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Installation Procedure
Figure 23 Condensed Water Outlets
3.10 Routing and Connecting Power Cables to ExtensionBBS Cabinet and Installing the Fuse
This section describes how to connect the power cables to the extension BBScabinet and installation of additional fuse.
The BBU is equipped with one fuse as a standard configuration.
Table 5 shows the cables between the BBU and an extension BBS.
Table 5 Cables for Extension BBS
Cables Cables
1�48 V DC
2 0 V DC
3.10.1 Connecting �48 V DC Cable Between Extension BBS and BBUCabinets
1. Unfasten and remove the cover plate of the fuse connecting bar (if thecover plate was not removed before) in the BBU cabinet; see Figure 24.
2. Fasten the fuse in the place, using the screws provided with the fuse; seeFigure 25. Tighten the fuse; see Table 3 for the correct torque.
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Figure 24 Removing the Cover Plate of the Fuse Connecting Bar
3. Install the �48 V DC cable in the BBU cabinet according to Figure 25.Tighten the cable; see Table 3 for the correct torque.
4. Fasten back the cover plate of the fuse connecting bar.
5. Pull the �48 V DC cable through the open cable entry in the BBU cabinet.
6. Pull �48 V DC cable through the Roxtec frame. Do not fasten back theRoxtec frame, yet.
7. Connect the �48 V DC cable to the circuit breaker in the extension BBScabinet.
8. Strap the �48 V DC cable to the management rack in the BBU cabinet.
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Installation Procedure
Figure 25 Installation of Fuse and Cable
3.10.2 Connecting 0 V DC Cable Between Extension BBS and BBUCabinets
1. Connect the 0 V DC cable to the 0 V bus-bar in the BBU cabinet; see Figure26. Tighten the cable; see Table 3 for the correct torque.
2. Pull the 0 V DC cable through the open cable entry in the BBU cabinet.
3. Pull 0 V DC cable through the Roxtec frame. Do not fasten back the Roxtecframe, yet.
4. Connect the 0 V DC cable to the 0 V bus-bar in the BBS cabinet.
5. Strap the 0 V DC cable to the management rack.
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Figure 26 Installation of 0 V DC Cable to 0 V Bus-bar
3.10.3 Sealing Roxtec Cable Entry
See also the Roxtec installation instructions.
1. When all external cables are connected, fasten the Roxtec frame to thecabinet.
2. Seal the cable entry using the rubber modules, one for each cable. Adaptthe modules to the cables by peeling away layers; see Figure 27.
3. Use cable samples to try to ensure that the gap between the two halves ofeach module is between 0.1 and 1 mm.
4. Lubricate both the inside and outside faces of the modules thoroughly, andinsert the modules into the frame.
5. When all modules are in place, tighten the screw of the cable entry frame.
6. Ensure that there is no remaining distance between the two entry halves,and between the entry and the installed cables. If necessary adjust theinstallation to ensure a tight seal.
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Installation Procedure
Figure 27 Sealing the Cable Entry Frame
3.11 Installing the Batteries
For general information about handling batteries, see document BatteryGuidelines Reference [7].
The BBU has one or two battery strings. The unit (string) is always configuredwith four battery blocks with the capacity of 12 V/110 Ah, 12 V/140 Ah or 12V/170 Ah. The configuration of one battery string is always installed on the leftside of the battery tray, close to the cooling system rail.
Table 6 shows physical characteristics for the battery types approved for theBBU.
Table 6 Type, Physical Size and Weight of Batteries
Battery Type Characteristics Height[mm]
Width[mm]
Length[mm]
Weight[kg]
NorthStar NSB110 FT (AGM)
12 V DC110 Ah 227 125 560 41,4
NorthStar NSB170 FT (AGM)
12 V DC 170 Ah 320 125 560 59,5
NorthStarNSB 170 Blue(AGM)(1)
12 V DC 140 Ah 320 125 560 56,0
(1) High-cyclic batteries.
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3.11.1 Installing One Battery String
1. Attach four battery straps in the BBU. Route the rear battery straps halfthrough the strap holder; see Figure 28 and hang the battery straps on thetop management rack to ease the installation of batteries.
Figure 28 Attaching Battery Straps
2. Attach two spacers on batteries B1 - B3 as shown in Figure 29.
3. Put batteries B1 - B3 on the shelf.
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Figure 29 Attaching Spacers
Installing Temperature Sensor Cables
The climate temperature sensor cable is connected to the Active Cooling Unitor Direct Air Cooling Unit climate system controller and the sensor shall beinstalled on the battery.
4. Uncoil the climate temperature sensor cable.
5. Route the climate temperature sensor cable on the bottom of the cabinetand attach the climate temperature sensor cable on battery B3 with theself-adhesive fastener for climate temperature sensor; see Figure 30.
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Figure 30 Routing the Climate Temperature Sensor Cable - One BatteryString
6. Attach the RBS temperature sensor cable to battery block B3, as shownin Figure 31.
7. Coil and strap the exceeding length of cables.
8. Put battery B4 on the shelf.
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Installation Procedure
Figure 31 Routing the RBS Temperature Sensor Cable - One Battery String
9. Attach an end cap to battery B1 according to Figure 32.
10. Cut 100 � 105 mm pieces of gas ventilation tubes and connect batteriesB1 - B4 according to Figure 32.
Note: Battery ventilation tubes must always be connected to the batteries asspecified in this document to secure safe gas ventilation.
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Figure 32 Gas Ventilation Tube System - One Battery String
11. Attach the intercell connectors to batteries B1 - B4; see Figure 33. Tightenthe batteries; see Table 3 for the correct torque.
Figure 33 Intercell Connectors
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Installation Procedure
12. Remove the protecting shrink tube that covers the lug of battery cable�48 V DC; see Figure 34.
Note: Do not remove the second shrink tube.
Caution!
Improper handling of batteries can result in the batteries short-circuiting, whichcan result in serious injury due to high energy levels. Exercise the necessarycare when working with batteries.
Caution!
Batteries can leak electrolyte if improperly handled. Electrolyte in contactwith skin or eyes can cause injury. In the event of electrolyte injuries, rinsethe affected area with water and seek medical attention immediately. Useprotective equipment when replacing batteries.
Figure 34 Removing the Protecting Shrink Tube
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13. Attach battery cables �48 V DC to battery B1 as shown in Figure 35.Tighten the cable; see Table 3 for the correct torque.
Note: If there is a need to install two battery strings stop at this point and followthe steps for two battery strings. If not follow the steps 14 - 21 below.
14. Attach the tube from the gas ventilation valve to battery B4 according toFigure 32.
15. Remove the protecting shrink tube that covers the lug of battery cable 0V DC; see Figure 34.
Note: Do not remove the second shrink tube.
16. Attach battery cable 0 V DC to battery B4. Route the cable as shown inFigure 35. Tighten the cable; see Table 3 for the correct torque.
Figure 35 Battery Cables - One Battery String
17. Attach the pole protection caps on batteries B1 - B4; see Figure 36.
18. Fasten the battery clamp by fastening the three screws from the top, asshown in Figure 40.
19. Fasten the battery straps, by routing the front battery strap half through thestrap holder in the battery clamp.
Note: Make sure to strap the battery straps in a correct way; see Figure 41.
Note: Do not tighten the straps too firmly; otherwise the caps can bedamaged.
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Installation Procedure
20. Strap the �48 V DC cable and 0 V DC cable to the battery shelf.
21. Strap the battery cables for the second battery string to the battery clamp.
Figure 36 Attaching the Pole Protection Caps
3.11.2 Installing Two Battery Strings
1. Attach four battery straps for batteries B5 - B8 in the BBU. Route therear battery straps half through the strap holder; see Figure 28 and hangthe battery straps on the top management rack to ease the installationof batteries.
2. Attach two spacers on batteries B4 - B7 as shown in Figure 29.
3. Put batteries B7 and B8 on the shelf as shown in Figure 37.
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Installing BBU 6102
Figure 37 Installing Batteries B7 and B8
4. Attach the tube from the gas ventilation valve to battery B8 according toFigure 38.
5. Attach the gas ventilation tubes between batteries B7 - B8 according toFigure 38.
Note: Battery ventilation tubes must always be connected to the batteries asspecified in this document to secure safe gas ventilation.
6. Attach the intercell connector to batteries B7 - B8; see Figure 33. Tightenthe batteries; see Table 3 for the correct torque.
7. Remove the protecting shrink tube that covers the lug of battery cable 0 VDC for the second battery string; see Figure 34.
Note: Do not remove the second shrink tube.
Caution!
Improper handling of batteries can result in the batteries short-circuiting, whichcan result in serious injury due to high energy levels. Exercise the necessarycare when working with batteries.
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Installation Procedure
Caution!
Batteries can leak electrolyte if improperly handled. Electrolyte in contactwith skin or eyes can cause injury. In the event of electrolyte injuries, rinsethe affected area with water and seek medical attention immediately. Useprotective equipment when replacing batteries.
Figure 38 Gas Ventilation Tube System - Two Battery Strings
8. Attach battery cable 0 V DC to battery B8. Route the cable as shown inFigure 39. Tighten the cable; see Table 3 for the correct torque.
9. Slide in batteries B7 and B8.
10. Put batteries B5 and B6 on the shelf.
11. Attach the gas ventilation tubes to batteries B4 - B7 according to Figure 38.
Note: Battery ventilation tubes must always be connected to the batteries asspecified in this document to secure safe gas ventilation.
12. Attach the intercell connectors to batteries B5 - B7; see Figure 33.
13. Remove the protecting shrink tube that covers the lug of battery cable �48V DC for the second battery string; see Figure 34.
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Installing BBU 6102
Note: Do not remove the second shrink tube.
14. Attach battery cable �48 V DC to battery B5. Route the cable as shown inFigure 39. Tighten the cable; see Table 3 for the correct torque.
15. Remove the protecting shrink tube that covers the lug of battery cable 0V DC for the first battery string; see Figure 34.
Note: Do not remove the second shrink tube.
16. Attach battery cable 0 V DC to battery B4. Route the cable as shown inFigure 39. Tighten the cable; see Table 3 for the correct torque.
17. Attach the pole protection caps on batteries B4 - B8; see Figure 36.
Figure 39 Battery Cables - Two Battery Strings
18. Fasten the battery clamp by fastening the three screws from the top asshown in Figure 40.
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Installation Procedure
Figure 40 Putting Back the Battery Clamp
19. Fasten the battery straps, by routing the front battery strap half through thestrap holder in the battery clamp.
Note: Make sure to strap the battery straps in a correct way; see Figure 41.
Note: Do not tighten the straps too firmly; otherwise the caps can bedamaged.
20. Strap the �48 V DC cables and 0 V DC cables to the battery shelf.
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Installing BBU 6102
Figure 41 Fastening the Battery Straps
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Completing the Installation
4 Completing the Installation
To complete the installation, do the following:
1. Check that all cables are correctly routed and connected and whereapplicable, cables are strapped to the top or to the sides of the cabinet.
2. Check that all covers are in place.
3. Check that the site is clear of waste materials and the cabinet is clear ofthe tools listed in Table 2.
4. Insert the upper insulation plate.
5. Make sure the cooling system is functioning; see Section 5 on page 49.
6. Put back the door into the BBU opening.
7. Close and lock the BBU door.
8. At site commissioning and start of operation, switch on the power fromthe RBS.
4.1 Environment
Note: Ericsson strongly recommends paying careful attention to theenvironment when cleaning a site after installation. In particular,recycle all waste that can be recycled and sort the rest so that it can bedisposed in accordance with local regulations.
Table 7 shows the recommended methods to take care of waste materialafter installation.
Table 7 Waste Sorting and Recycling
Item Recycle or Sort
Bubble plastic
Cable insulation from crimping, brazing, orwelding
Cable pieces, low metallic content
Cable tie clippings
Foam
Packing chips
Polystyrene
Recycle or sort as plastic
Paper and wood Recycle or sort as paper
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Installing BBU 6102
Item Recycle or Sort
Cable pieces, high metallic content
Metal from cable ladders
Nuts, bolts, washers, and screws
Recycle or sort as metal
Batteries
Refrigeration fluids
Dispose of in accordancewith local regulations
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Commissioning
5 Commissioning
5.1 Indicators of the Climate System Controller
There are two Cooling Systems available for the BBU 6102: Direct Air CoolingUnit and Active Cooling Unit. Both units are equipped with indicators; see Figure42 for Direct Air Cooling Unit climate system controller with a cover and Figure43 for Active Cooling Unit climate system controller with a cover, to indicate theoperational state of the Direct Air Cooling Unit and the Active Cooling Unit.
The cabinet can be also equipped with an optional heater.
The indicators are specified in Table 8.
Table 8 Operational State as Defined by Indicators
Indicator Operational Mode
Green - On Power On
Yellow - On Direct Air Cooling Unit or Active Cooling Unit inoperation (blinking if an alarm)
Red - On Direct Air Cooling Unit or Active Cooling Unit Failure
All Off No power available to Direct Air Cooling Unit or ActiveCooling Unit
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Installing BBU 6102
Figure 42 Direct Air Cooling Unit Climate System Controller with Cover
Figure 43 Active Cooling Unit Climate System Controller with Cover
5.2 Direct Air Cooling Unit
This section describes the commissioning and test of Direct Air Cooling Unit.
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Commissioning
5.2.1 Alarm Indications
The following alarms (Alarm = Open Circuit) are provided by the Direct AirCooling Unit:
The climate system controller monitors the following alarm conditions:
Table 9 Alarm Table
Operating State
Cooling /Heating
CoolingUnitFailure
Red Indicator
In Operation
YellowIndicator
PowerOn
GreenIndicator
AlarmOutput
AlarmReset
LowSupplyVoltage
Off Off Off On ClosedCircuit
AutomaticReset
HighSupplyVoltage
Off Off Off On ClosedCircuit
AutomaticReset
InternalFan LowRPM
Off On 2 QuickFlashesand aPause
On OpenCircuit
ManualReset (1)
Unit Failure
Off On 3 QuickFlashesand aPause
On OpenCircuit
ManualReset (1)
HeaterCurrentOut ofRange (ifinstalled)
Off On 4 QuickFlashesand aPause
On OpenCircuit
ManualReset (1)
(1) Turn off, wait and then turn on the power.
5.3 Active Cooling Unit
This section describes the commissioning and test of Active Cooling Unit.
5.3.1 Alarm Indications
The following alarms (Alarm = Open Circuit) are provided by the Active CoolingUnit.
The climate system controller monitors the following alarm conditions:
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Installing BBU 6102
Table 10 Alarm Table
Operating State
Cooling /Heating
CoolingUnitFailure
Red Indicator
In Operation
YellowIndicator
PowerOn
GreenIndicator
AlarmOutput
AlarmReset
LowSupplyVoltage
Off Off Off On ClosedCircuit
AutomaticReset
HighSupplyVoltage
Off Off Off On ClosedCircuit
AutomaticReset
ExternalFan LowRPM
Off On 1 QuickFlash anda Pause
On OpenCircuit
ManualReset(1)
InternalFan LowRPM
Off On 2 QuickFlashesand aPause
On OpenCircuit
ManualReset(1)
Unit Failure
Off On 3 QuickFlashesand aPause
On OpenCircuit
ManualReset(1)
HeaterCurrentOut ofRange (ifinstalled)
Off On 4 QuickFlashesand aPause
On OpenCircuit
ManualReset(1)
(1) Turn off, wait and then turn on the power.
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Glossary
Glossary
ACAlternating Current
AGMAbsorbent Glass Mat
AhAmpere hour
AWGAmerican Wire Gauge
BBSBattery Backup System
BBUBattery Backup Unit
DCDirect Current
EMCElectromagnetic Compatibility
METMain Earth Terminal
OMCOperation and Maintenance Center
PCFPower Connection Filter
RBSRadio Base Station
RFRadio Frequency
RPMRevolutions per Minute
SIDSite Installation Documentation
VVolt
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Reference List
Reference List
Safety
[1] Personal Health and Safety Information, 124 46-2885
[2] System Safety Information, 124 46-2886
Site
[3] Site Material Installation Instructions, EN/LZT 751 0049
[4] Installation Team Products Overview, EN/LZT 751 0065
[5] Site Installation Documentation (SID), Specific to the Site
[6] Grounding Guidelines for RBS Sites, 190 08-EN/LZT 735 0018
[7] Battery Guidelines, 1/154 43-LZA 701 6009
RBS
[8] Installing RBS, RBS 6102, 2/ 1531-LZA 701 6001
[9] Replacing Power Units, 14/1543-LZA 701 6001
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