Zte ZXC10 CBTS O1, Installation Manual

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ZXC10 CBTS I2 Installation Manual
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Confidential and Proprietary Information of ZTE CORPORATION
Take following steps to connect BTS grounding system cables. Figure 81
shows this process.
1.
Connect feeder grounding cable to outdoor copper busbar, before
entering into equipment room.
2. Connect indoor lightning arrester ground to outdoor copper busbar
through the conductive wire.
3. Connect indoor BTS cabinet protection ground (PGND) to indoor
grounding copper busbar.
4. Connect BTS ground (–48 VGND) cable to BTS DC ground terminal.
5. Connect any PGND, inside equipment room (including cabling rack) to
indoor copper grounding busbar.
6. Connect indoor copper and outdoor grounding busbars to grounding
cable (50 mm
2
).
Grounding Principles
Following are grounding principles:
While iron tower installation, install a grounding clip on feeder at every
787.4 inch (20 m) distance.
Ground feeder at three positions: where it leaves antenna installation
pole, rooftop, and where it enters equipment room.
Ground, the outdoor cabling ladder provided by network operator.
Grounding Copper Busbar Installation
Figure 82 shows grounding copper busbar structure.
F
I G U R E
8 2 - O
U T E R
V
I E W O F
G
R O U N D I N G
C
O P P E R B U S B A R
( U
N I T S M M
)
There are two types of copper grounding busbars outdoor and indoor, their
installation methods are same.
Determine installation position of feeder window as required by
engineering design drawing. Use expansion bolts to fix copper busbar onto
the wall.