Huawei iSiteC BTS3601C Installation Manual page 50

Installation Manual
iSiteC BTS3601C CDMA Base Station
Check whether there is good electrical connection between the UPS shell and the
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UPS external box via screws. UPS external box should be grounded.
Check whether the protection grounding cable of AC lightning protection box or
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IAFB is directly connected to the protection grounding bar. Make sure the
grounding cable is shorter than 1m.
The AC power cable from the exterior to the BTS should be directly connected to
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the AC lightning protection box (when AC lightning protection box is available) or
to the IAFB (when AC lightning protection box is unavailable). It is not allowed to
connect the external power cable to the power distribution terminal in the work box
first and then to the AC lightning protection box.
When E1 cable is used for signal transmission of the BTS, if the E1 cable from the
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exterior to the BTS is coaxial cable with metal shell (provided by the user), its
metal shell should be grounded with grounding clip. The grounding cable from the
grounding clip should be directly connected to the protection grounding bar
instead of to the grounding bar of the IAFB.
In BTS outdoor tower installation mode, the shielding covering of the BTS coaxial
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feeder should be grounded at the tower-top and the front end connecting the BTS.
The grounding cable should be connected to the tower body nearby. The
protection grounding bar should have separate grounding donwlead that is not
insulated from the tower body.
When the feeder is not shorter than 60m, the shielding covering of the coaxial
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feeder should be grounded at the middle of the tower body.
II. Checking indoor grounding
Indoor grounding check includes the following aspects:
In BTS indoor installation, there should be indoor grounding bar and outdoor
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grounding bar that should be led into the counterpoise separately instead of being
connected in series directly with grounding cables.
The grounding cable at the point where the feeder enters the feeder window is
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connected to the outdoor grounding bar in the direction from the antenna to the
BTS.
The AC lightning protection box provides separate grounding cable to connect to
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the indoor grounding bar. The grounding cable from the AC lightning protection
box or from the IAFB to the indoor grounding bar should be shorter than 1m.
Check whether there is good electrical connection between the UPS shell and the
l
UPS external box via screws. UPS external box should be grounded.
When E1 cable is used for signal transmission of the BTS, if the E1 cable from the
l
exterior to the BTS is coaxial cable with metal shell (provided by the user), its
metal shell should be grounded with grounding clip. The grounding cable from the
grounding clip should be directly connected to the indoor grounding bar instead of
to the grounding bar of the IAFB.
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5-2
Hardware Installation
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