Installing Lightning Arrester - Huawei iSiteC BTS3601C Installation Manual

Installation Manual
iSiteC BTS3601C CDMA Base Station
building-top. The spacing between plastic clips should be 1m. And the direction of
the clip heads should be interlaced regularly. If two feeders are joined, they should
be bound together without intersection or curve.
When routing the feeder, try to expand the feeder roll before routing. Try to avoid
l
bending of it. If it is unavoidable to bend the feeder, the bent radius should not be
less than the minimum of the allowed bent radius for the cables so as to avoid
damage to the feeder.
Caution:
When the distance from the antenna to the BTS is greater than 100m, 7/8 feeder should be adopted so as
to minimize signal loss. If it is unavailable, 1/2 feeder should be adopted, instead.

4.3.2 Installing Lightning Arrester

There are two types of lightning arresters for GPS antenna, i.e. antenna-side lightning
arrester and equipment-side lightning arrester. The former is used for lightning
protection for active GPS antennae, while the latter for the GPS card. The two arresters
are of the same model.
Currently there are two types of lightning arresters. The installation procedure for each
type is described in detail as follows:
I. Type iS-MR50LNZ+6 lightning arrester
Figure 4-9 illustrates the appearance of Type iS-MR50LNZ+6 lightning arresters.
(1) PROTECTED end
Figure 4-9 Appearance of Type iS-MR50LNZ+6 lightning arrester
4 Installing Satellite Synchronization Antenna and Feeder System
(1)
4-9
Hardware Installation