Installation Manual
iSiteC BTS3601C CDMA Base Station
Hardware Installation
2
Installing Cabinet Hardware
2-51
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If the building containing the BTS3601C is close (straight distance less than 30m)
to the transformer for power distribution, the counterpoise of the building should be
connected to that of the transformer and form a unified counterpoise.
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BTS3601C grounding busbar should be installed together with the BTS3601C
directly on the metal mast without any insulation processing. At the same time, a
grounding cable should be led from the metal mast to the BTS3601C grounding
busbar, be fixed via bolts or be welded onto the metal mast. It should be made of
yellow-green plastic insulation copper wire with the core diameter not less than
16mm
2
. Or, instead, a piece of 40
%
4mm hot-galvanizing flat steel should be
welded onto the mast and the wire hole should be reserved on the other end of the
steel, so as to connect grounding cable to the BTS3601C grounding busbar.
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If grounding bar or grounding point is available in the building-top or inside the
building (e.g. the PGND bar of the communication euipment room), the downlead
of the BTS3601C grounding busbar should be connected directly to the grounding
bar available on building-top or inside the building. The grounding downlead
should be made of yellow-green plastic insulation copper wire with the core
diameter not less than 35mm
2
.
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If no grounding point is available inside the building, the downlead of the
BTS3601C grounding busbar should be led down to the building bottom and
connected to the counterpoise of the building. The downlead should be made of
40
%
4mm hot-galvanizing flat steel or yellow-green plastic insulation copper wire
with the core diameter not less than 35mm
2
.
3)
Installing BTS3601C indoors
l
If the equipment room is close (straight distance less than 30m) to the transformer
for power distribution, the counterpoise of the equipment room should be
connected to that of the transformer so as to form a unified counterpoise.
l
If PGND bar is available inside the equipment room, the grounding busbar of the
BTS3601C system should be connected via PGND cable to the grounding bar of
the equipment room directly. The grounding cable should be made of 35mm
2
yellow-green plastic insulation copper wire.
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If PGND bar is available in other rooms (e.g. communication equipment room in
the building) instead of the equipment room, the downlead of the BTS3601C
grounding busbar should be connected to the grounding bar in such room. The
grounding downlead should be made of yellow-green plastic insulation copper
wire with the core diameter not less than 35mm
2
. If no groundign point is available
in the whole building, the downlead may be led down to the bottom of the building
then to the counterpoise of the building. The grounding downlead should be made
of yellow-green plastic insulation copper wire with the core diameter not less than
35mm
2
.
