Huawei DBS3900 User Manual

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8.3 Installing a PGND Cable and Equipotential Cable
The equi-potential PGND cable is used to connect the PGND bolts on the cabinets to the PGND
grounding bars on site, ensuring that the cabinets are properly grounded. The equi-potential cable
is used to connect the PGND bolts on the cabinets, ensuring the equi-potential connections
between the cabinets.
Prerequisite
The tools, such as a Phillips screwdriver, a cable cutter, and a multi-purpose crimping tool, are
ready.
Context
l In the triple mode scenario, a maximum of two +24 V DC APM30H can be configured. In
this case, BBU1 is installed in an APM30H, and BBU2 is installed in an extended APM30H.
l An equipotential cable connects the two APM30Hs.
l A PGND cable is installed in the APM30H housing BBU1.
Table 8-1 describes the specifications of the PGND cable and equi-potential cable.
Table 8-1 Specifications of the PGND cable and equi-potential cable
Cable Name
One End The Other End Remarks
PGND cable M6 OT terminal M6 OT terminal Yellow and green cable,
16 mm
2
Equi-potential
cable
M6 OT terminal M6 OT terminal Yellow and green cable,
16 mm
2
Procedure
Step 1 Prepare the PGND cable and equi-potential cable.
1. Prepare the cable of proper length based on the actual cable route.
2. Add OT terminals to both ends of the cable. For details, see Assembling the OT Terminal
and the Power Cable.
Step 2 Install a PGND cable and Equipotential Cable.
1. Connect one end of the PGND cable to the ground bar on the inner side of the cabinet under
the +24 V DC APM30H, use a spring washer and a bolt to secure the OT terminal on the
cable, and then connect the other end to the external ground bar, as shown in Figure
8-36.
NOTE
When installing the PGND cable, keep the crimping tube of the OT terminal in the direction shown in
Figure 8-35.
DBS3900 (Ver.B)
Installation Guide
8 Outdoor Scenario with DC Power Supply (BBU Installed
in a +24 V DC APM30H)
Issue 06 (2011-09-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
243

Huawei DBS3900 Specifications

General

Brand	Huawei
Model	DBS3900
Category	Accessories
Language	English