Installation Manual – Antenna & Feeder System Installation
BTS3802C & RRU
Chapter 2
Installing RF Antenna & Feeder System
2-39
Note:
z
When laying the feeders along the tower, if there are grounding points for the grounding clips on the
tower body, connect the grounding cable of the grounding clip directly to the steel plate of the tower,
as shown in Figure 2-36.
z
If there is no grounding point on the tower body, use the base of the feeder fixing clip to connect the
grounding cables. In this case, fix the base onto the tower or the outdoor cabling rack and then
connect the grounding cable to the base.
z
When the feeders are laid on the outdoor cabling rack, the grounding cables can be connected to the
well-grounded cabling rack.
6) The grounding cable of the feeder grounding clips that on the outdoor feeders
shall be neatly led to the outdoor grounding bar. If no outdoor grounding bar is
available, they can be connected to the well-grounded outdoor cabling rack or to
the lightning protection grounding net of the building.
Caution
The grounding cable as well as the grounding connector shall go through the antirust treatment. The lug,
nut and cabling racks shall be coated with antirusting paint. The bare wire and the lug handle shall be
wrapped with insulating tape.
2.13.4 Grounding position
The installation of feeder grounding clip and the layout of feeder are implemented at
the same time. The feeder is grounded by using the lightning protection grounding
clip to ground the sheath of the feeder. The grounding cable from the grounding clip
shall be directly connected to the protection grounding bar. The grounding positions of
the feeders are different according to the installation modes. Below introduces some
cases of grounding positions.
I. When cabinet adopts outdoor installation
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1m~2m down the antenna
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2m around feeder turning point
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Near the equipment of cabinet.
