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Installation Manual – BTS3606 Cabinet Installation
Airbridge BTS3606&3606A CDMA Base Station
Item
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The feeder from the tower top to the equipment room is grounded at least at
three places. That is, 1 m (39 in.) away from the platform of the tower; 1m
(39 in.) away from the outdoor cabling rack; and 1m (39 in.) away from the
feeder window.
The grounding cables are bundled firmly and waterproof measures are
taken for them.
Power cables and grounding cables outside the cabinet are bundled
separately from other cables.
Redundant part of power cables and grounding cables are removed instead
of being coiled up.
The positive pole of the primary power supply is connected to the ground
with the cross-section area defined in specifications.
The environment supervising device of BTS is firmly grounded.
Power cables and grounding cables are distributed to facilitate maintenance
and expansion.
If the tower is higher than 60 m (197 ft.), a feeder grounding clip is added in
the middle of the tower.
If the feeder from the tower is distributed on top of the building (or the
cabling rack) for over 20 m (66 ft.), a lightning protection grounding clip is
added on top of the building (or cabling rack).
The feeder grounding clip is fixed directly on the steel plate of the nearby
tower. It is made in compliance with specifications and well connected.
Antirust, anticorrosion and waterproof measures are taken for it.
The antenna feeder grounding cable on top of a building without the tower is
connected to the lightning protection grounding grid on the top of the nearby
building.
The front door of the cabinet is connected to the grounding bolt fixed on the
door through a cable. The grounding cable of the doors of the cabinet is
firmly connected.
The feeder is led into the room along the wall from the top of the building. If
a cabling ladder is used, it is grounded.
The feeder grounding cable is routed from the top down. The angle between
the cable and the feeder is 15 degrees as appropriate.
If GPS antenna is installed on the iron tower, there are two grounding points
outdoors.
Labels are filled in and stuck on power cables and grounding cables tidily
and their directions are the same.
The labels can be uniformly made according to the requirement of the user.
It is recommended that labels are stuck in places 2 cm (0.8 in.) away from
the connector.
The intervals between the power cable, the grounding cable and the signal
cable are more than 3 cm (0.12 in.).
Huawei Technologies Proprietary
Chapter 6 Checking Cabinet Installation
Requirement
6-4
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