Huawei RRU3971, Руководство по установке

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l Reserve drip loops for all cables outside the feeder window before routing them into the
room. Ensure that the radiuses of the drip loops are greater than or equal to the minimum
bending radiuses of the cables.
l
When routing a cable into the room, ensure that a person is assisting you in the room.
l Apply waterproof treatment to the feeder window.
Outdoor Cabling Requirements
l
After being connected to a ground clip on power cables, a ground cable must be routed
downwards to prevent water from entering the equipment to which the power cables
connect.
l Protect outdoor cables against potential damage. For example, put the cables through tubes.
l The cables to be protected include AC power cables, transmission cables, and cables laid
out underground.
l When routing cables through tubes on the ground below the cabinet, put a 30 mm to 50
mm (1.18 in. to 1.97 in.) length of the tubes into the base of the cabinet but do not put the
tubes into the cabinet. Use waterproof tape or waterproof silicon gel to block both ends of
the tubes and use sheet metal tabs to secure the tubes to the cable holes in the base.
l
When routing cables through tubes along a metal cable trough below the cabinet, do not
put the tubes into the base of the cabinet but cover the cable trough and connect the tubes
to the cable holes in the base.
l When routing RRU cables, ensure that the highest positions of the routes of all RRU cables
(except RF cables and AISG cables) must be lower than the bottom of the RRU.
l
Use clips to secure cables outdoors. For the method of installing a clip, see the installation
guide delivered with the clip.
l Arrange cables neatly along the routing direction and use clips to secure the cables.
l
Determine the positions where the clips are installed according to the actual situation. For
example, 7/8" feeders are secured with clips at an interval of 1.5 m to 2 m (4.92 ft to 6.56
ft), CPRI fiber optic cables and power cables are secured with clips at an interval of 1 m
to 1.5 m (3.28 ft to 4.92 ft). Ensure that the clips are evenly spaced and in the same direction.
l When fastening cables with a clip, ensure that the cables are aligned neatly and are routed
through the holes in the clip. Do not stretch the cables too tightly.
NOTE
There are two types of clips: 3-hole clip and 6-hole clip, which are described as follows:
l A 3-hole clip is shown by illustration a in the following figure. It is often used to fasten feeders.
l A 6-hole clip is shown by illustration b in the following figure. It is often used to fasten power cables and
CPRI fiber optic cables.
8 Installing RRU Cables
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