ZXSDR BS8800 Installation Criterion

Prepared by-Ashish Sharma

BTS installation PositionFront aligned of the BTS Must be done with the adjacent rack

Correct alignmentincorrect alignmentThe vertical deviation of the cabinets shall not exceed 1 of the cabinet height.The front side of the same row of cabinets shall be on the same surface, with a deviation not more than 5mm allowed. The first cabinets of all the rows shall also be on the same surface, with a deviation not more than 5mm allowed.

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Procedure for BTS GroutingSelect the installation position as per the design documents.

Minimum required gap with the adjacent rack should be 100mm.Do marking with the marking template.

Use drill machine to make holes for expansion bolts.Fix the fasteners and then fix the base with insulation pad.

MeasurementHolesDrilling HolesMarkingHammeringFastener at hole

Put insulation pad b/w Base and floor.Fix base plate using fastenerTight bolt fully

Remove bolt BTS Grouting continued

Use isolation pad between floor and BTS.Expansion bolts must be installed properly.Washers must be installed in correct order i.e. Insulation washer >Flat washer>Spring washer>Nut .

Fix the cabinet.

1- Bolt2- Spring washer3- Flat washer4- Insulation washer

Check vertical and horizontal leveling errors.

The front side of the same row of cabinets shall be on the same surface, with a deviation not more than 5mm allowed. The first cabinets of all the rows shall also be on the same surface, with a deviation not more than 5mm allowed.

Installation of RU cardsXWrong processCorrect process of card installation

Internal Cable routing and connectionsUBPGReserved for expansion(Use dummy cards)

Keep all cards in the positions as shown below

1st Sec2ndSec3rdSec

Install SA Card

E1 cableExternal alarm cable

SA CONNECTORSA ground connectionSA Ground cable

Power cable lug preparation & installationThe -48V power cable > Blue,-48V RTN/0V/GND power cable > Black,Protection Ground cable > Yellow-Green.

Hot shrink tubesCopper Lugs

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Lug PreparationCore cableCrimping toolLugLugX

Power connectionsX

Power cable installation-The cross sectional areas of the power cables and the ground cables shall comply with the product installation requirements. The cross sectional area of the ground cables shall be at least 35 mm2 and they shall be connected reliably to the indoor ground copper bar. Those of the -48V GND power cable and the -48V power cable shall be at least 25mm2 and they shall be laid straight and connected reliably.

The -48V power cable shall be blue, the -48V GND power cable shall be black, and the ground cable shall be yellow-green.

Power cable routingUse white ties at regular intervals

Extra power cable length should not be coiled must be cut.

Power cable entry to BTS

Power Cable termination at SMPS/DCDBMaximum two lugs are allowed to terminate at a single terminating point according to the below figureBlack cable to Bus bar in SMPS

Yellow green cable (PGND) to IGBBlue Power cable must be terminated to the -48 V.

Cable routing at BTSTies must be used to fix Jumper cables at BTS end All the jumpers must be routed straightly the bending radius should not exceed

Hot shrink sleeves must be installed

TRXRXTRXRXTRXRX

Power cable & Jumper cable routingWhite ties must be used at regular intervals

All cables must be routed vertically at BTS.Power cables should be separately routed from E-1 and signal cables.

Antenna & Feeder Installation

Antenna installation-Before installation verify mount height, orientation & tilt is according to plan. Antenna mounts should not have any tilt. They should be vertical. Ensure mount fixing is proper & 2 nuts are used for fixing.

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Assemble the antenna clamps.Connect antenna jumpers to the antenna ports.Do the weather proofing of ports.

Weather proofing process-1- Wrap three layer of insulation tape on connector :2- Wrap three layers of water-proof daub.3- Finally, wrap three layer of insulation tape again. Wrapping requirement: Wrap one layer from bottom upward, one layer from top to bottom, and finally one layer from bottom upward. When wrapping the tape or daub, make sure that the upper layer covers 1/3 of the lower layer. The daub must be stretched to 50%. The tape must be wrapped smoothly.

Assemble the antenna clamps.

Mounting of Antenna & FeederProcess for antenna & feeder mounting

Fix the antenna.The azimuth and tilt angle of the installed antenna must accord with design specifications

Note- maximum interval between two feeder clamps should not increase more than 1~1.5 meters.The antennas shall be installed below the lightning rod and within its protective range. The protective angle in the plains shall not be more than 45 and in the mountains not more than 30.

Jumper must be routed 300mm straight at the connectors. Bending radius should not be less than 20times of the feeder diameter.

Feeder installation

1. Distance between two clamps should be 1~1.5 meter.3. Feeder bending should be smooth & radius shouldnt be less than 20d (d=diameter of feeder).2. Water drip arch must be given at the feeder window4. Feeder window must be seal to avoid water inside the shelter

Grounding Clip installationIf the length of a feeder 20m, then ground it at two points, one within 2m from the antenna feeder connector and the other that is near the outdoor feeder window and connected to the outdoor ground bar;If 20m < its length 60m, add a ground point with 2m from the point where it leaves the iron tower or the rooftop;If its length >60m, it is required to add one more ground point for every 20 more meters.

Fig-1 Grounding near feeder connector & antenna jumperFig-2 Feeder grounding at tower ladderFig-2 Grounding at EGB

Standard Grounding

Connections & labeling of Feeder

Surge Arrester installation & grounding

Surge arrester stand must be fixed properly at the cable trayGrounding cable of the surge arrester stand must be connected to the EGB.

LabelingAll equipments & cables must be labeled for identification and easy maintenance.

R marked on labels is short for Remote. Generally, it is on the left of the label. L is for Local and usually on the right of the label. The labels of cable are filled in and stuck correctly and reliably. They must be tidy position and same direction. They must be stuck on a position 2 cm away from their connectors. They can be made in a uniform way according to customer requirement.

BTS

BTS label structureEGB Labels

Labels of Top BTSLabels Power cablesLabels of E-1 & Alarm cablesBlack cable0VBlue cable-48VYellow greenPGND

Feeder & Jumper cable labels must have minimum 200mm distance from their connector.

Feeder & Jumper Labels200mm200mm

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