Huawei DBS3900 Installation Manual page 293

DBS3900 (Ver.B)
Installation Guide
Table 8-11 Cable installation checklist
No.
1
2
3
4
5
6
7
8
BBU Hardware Installation Checklist
Table 8-12
Table 8-12 BBU hardware installation checklist
No.
1
2
3
4
5
6
Issue 06 (2011-09-15)
Item
All cables are connected securely and reliably. Pay special attention to the
communication cable connections and cable connections at the bottom of the
cabinet.
The cables are neatly and tightly bound. The cable ties are evenly spaced and face
the same direction.
Different types of cable, such as the power cable, ground cable, feeder, optical cable,
E1/T1 cable, and FE cable are separately bound.
The cable layout facilitates maintenance and future capacity expansion.
All the labels at both ends of the cables are legible.
The extra length of the indoor cable ties is cut, and the cut surfaces are smooth
without sharp edges. The extra length of 3 mm to 5mm of the outdoor cable ties is
reserved when the cable ties are cut.
The idle port that no cable is connected to is properly protected.
The connectors of the RF cables are fixed in position to avoid false connection that
may cause an abnormal voltage standing wave ratio (VSWR).
describes the BBU hardware installation checklist.
Item
All self-made PGND cables are copper-based with the proper wire diameters.
No switch, fuse, or similar object is allowed for the electrical connection of the
grounding system. No short circuit is allowed. Only one OT terminal of the
PGND cable can be connected to each terminal on the ground bar.
The redundant part of the power cable or PGND cable is stripped off rather
than coiled.
The terminals at both ends of the power cable or PGND cable are securely
soldered or crimped.
The bare wires at the terminals and terminal handles are covered with heat-
shrinkable tubes.
The flat washer and spring washer are well mounted on all OT terminals, and
the OT terminals are intact and contact the wiring terminals properly.
All the cables, including those on the bottom of the cabinet, are securely
connected.
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8 Outdoor Scenario with DC Power Supply (BBU Installed
in a +24 V DC APM30H)
280