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ZTE BTS Installation Process
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ZXSDR BS8800 Installation Criterion
Prepared by-Rajesh K Gaurav
秘密▲BTS installation Position
Front aligned of the BTS Must be done with the adjacent rack
Correct alignment incorrect alignment The 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.
秘密▲Procedure for BTS Grouting
Select 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.
秘密▲
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.
秘密▲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.
秘密▲Installation of cards
Fig 1- Insert the RSU cards Fig 2- Insert the Dummy cards
Fig 3- Do the power cable connections Fig 4- connect monitoring cable
Precaution -Wear ESD Wrist
strip while installation of
cards
秘密▲Internal Cable routing and connections
UBPG
Reserved for
expansion
Keep all cards in the positions as shown below
1st Sec 2nd
Sec
3rd
Sec
秘密▲Prepare lugs
Lug
Core cable
Crimping tool
秘密▲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.
秘密▲Power cable routing Use white ties at regular intervals
Extra power cable length should not be coiled must be cut
秘密▲Power Cable termination
*Blue Power cable must be terminated to the -48 V.
MCB should be labeled
Maximum two lugs are allowed to terminate at a single terminating point according to the below figures
秘密▲Cable routing at BTS
Ties 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
秘密▲Power cable & Jumper cable routing
White 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.
秘密▲Antenna & Feeder Installation
秘密▲Antenna installation- Check antenna
mounts are fixed properly using 2 nuts.
2
1
4
3
5
秘密▲ 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.
秘密▲Mounting of Antenna & Feeder
Pulley block
Feeder headbandage
Label
T ie the pull-up rope0.4m and 3.4m away
from the feederPull the feeder away fromthe iron tower with thisrope to avoid damage tothe feeder or feeder head
Pull-up rope
Process for antenna & feeder mounting
秘密▲ 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.
秘密▲Feeder installation
1. Distance between two clamps should be 1~1.5 meter.
3. Feeder bending should be smooth & radius shouldn’t be less than 20d (d=diameter of feeder).2. Water drip arch must be given at
the feeder window
4. Feeder window must be seal to avoid water inside the shelter
秘密▲Grounding Clip installation If 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 jumper
Fig-2 Feeder grounding at tower ladder
Fig-2 Grounding at EGB
秘密▲Standard Grounding
秘密▲Connections & labeling of Feeder
秘密▲Surge Arrester installation & grounding
Surge arrester stand must be fixed properly at the cable tray
Grounding cable of the surge arrester stand must be connected to the EGB.
秘密▲Labeling
Power cable (remote)
Equipment name
POWER CABLE ( R )
ZXDU 300 GND
POWER CABLE ( L )
BTSGND
Power ground
Power cable (local)
Equipment name Power ground
All 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.
秘密▲BTS label structure
EGB Labels Labels of Top BTS
Labels Power cablesLabels of E-1 & Alarm cables
Black cable0V
Blue cable-48V
Yellow greenPGND
秘密▲
Feeder & Jumper cable labels must have minimum 200mm distance from their connector.
Feeder & Jumper Labels
200mm200mm