Huawei iSiteC BTS3601C Installation Manual page 128

Installation Manual
iSiteC BTS3601C CDMA Base Station
When an independent grounding busbar is adopted for the BTS3601C, it should
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be installed on the tower directly without any insulation processing. The grounding
busbar of the BTS3601C should have the dedicated grounding downlead made of
40%4mm hot-gavanlizing flat steel. The PGND bar should be connected or welded
to the grounding downlead via 35mm
wire. The downlead should not be insulated from the tower body.
2) Installing BTS3601C on poles
The PGND of BTS3601C system should share the same grounding body with the
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lightning protection grounding of poles.
When the BTS3601C is close to the transformer for power distribution (straight
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distance less than 30m), the counterpoise of the BTS3601C system should be
connected to that of the transformer so as to form a unified counterpoise.
The overlapped parts of the metal fixing beam (between the two poles) and the
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downlead of the lightning arrester should be soldered together reliably. Various
equipment is installed on the metal holding support between fixing beams (the
support is soldered on the beams). The mechnical parts of all equipment should
contact the metal holding support directly without any insulation processing.
Full-length welding should be adopted here, instead of dot welding, as the latter is
unreliable.
The overlapped parts between the metal fixing parts of the platform and the
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downleads of the two lightning arresters should be reliably welded together. Or,
instead, a 40%4mm hot-galvanizing flat steel should be installed on the platform.
The two ends of the steel should be welded to the bench and the middle part of the
steel to the downleads of arresters. If the platform and the downleads of arresters
have not be welded together when the concrete pole is set up, connect them via
35mm
connects the flat steel to the OT. Full-length welding should be adopted here,
instead of dot welding, as the latter is unreliable.
Cabling ladder should be installed and fixed via metal fixing beam between two
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poles for antenna feeders. Good electric connection should be achieved between
the cabling ladder and the fixing beam. Meanwhile, the overlapped parts of the
fixing beam and the downlead of the lightning arrester should be welded together.
BTS3601C grounding busbar should be installed directly on metal holding support
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or platform without any insulation processing. A dedicated grounding downlead
(made of 40%4mm hot-galvanizing flat steel) should be prepared for the grounding
busbar. BTS3601C grounding busbar should be connected to the grounding
downlead via 35mm
it. And the downlead should not be insulated from various metal parts between the
two poles.
Installing BTS3601C on metal mast of building-top
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The PGND of BTS3601C system should share the same grounding body with the
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lightning protection grounding of the metal mast on building-top.
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yellow-green protection grounding cable and the grounding clip that
2
yellow-green plastic insulation copper wire or be welded with
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yellow-green plastic insulation copper core
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Hardware Installation
2 Installing Cabinet Hardware