Huawei BTS3902E WCDMA Installation Manual page 93

BTS3902E WCDMA
Installation Guide
1.
2.
3.
Step 4 Fasten the power cables using clips.
Step 5 Close the cover plate of the surge protection box and tighten the screw to 1.4 N·m (123.91 lbf.in.)
using an M4 Phillips screwdriver, as shown in
Figure 8-19 Closing the cover plate of the AC surge protection box
Step 6 Wrap the joints of the corrugated pipe and power cables using waterproof tape and polyvinyl
chloride (PVC) insulation tape, as shown in
before using PVC insulation tape.
Issue Draft A (2011-06-30)
Lead the power cable between the surge protection box and the external power device
through the PG connector labeled IN. Connect the OT terminals of the brown, blue, and
yellow/green core wires to the Lin, Nin, and GND ports on the surge protection box
respectively.
Route the power cable between the BTS3902E and the AC surge protection box through
the PG connector labeled OUT. Connect the OT terminals of the blue, brown, and green
and yellow wires to the Nout, Lout, and GND ports in the AC surge protection box,
respectively.
Tighten the thread-lock sealing nut, and then use a wrench to tighten the PG connector to
ensure it is waterproofed properly.
NOTE
Ensure that the insulation layer of each power cable is fastened using clips.
TIP
Wrap each connector with three layers of waterproof tape, from bottom up, then from top down, and finally
from bottom up. Do not cut the tape until all the three layers of the tape are already wrapped. When wrapping
tape, be sure that each layer of tape overlaps more than 50% of the preceding layer.
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8 Installing an AC Surge Protection Box and Related Cables
Figure 8-19.
Figure 8-20. Wrap the joints using waterproof tape
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