Installing A Pgnd Cable And Equi-Potential Cable - Huawei DBS3900 Installation Manual

DBS3900 (Ver.B)
Installation Guide
----End

7.3 Installing a PGND Cable and Equi-potential 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
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Table 7-1
Table 7-1 Specifications of the PGND cable and equi-potential cable
Cable Name
PGND cable
Equi-potential
cable
Procedure
Step 1 Prepare the PGND cable and equi-potential cable.
1.
2.
Step 2 Install a PGND cable and Equi-potential Cable.
1.
Issue 06 (2011-09-15)
In the triple mode scenario, a maximum of two TMC11Hs can be configured. In this case,
BBU1 is installed in an TMC11H, and BBU2 is installed in an extended TMC11H.
An equi-potential cable connects the two TMC11Hs.
A PGND cable is installed in the TMC11H housing BBU1.
describes the specifications of the PGND cable and equi-potential cable.
One End
M6 OT terminal
M6 OT terminal
Prepare the cable of proper length based on the actual cable route.
Add OT terminals to both ends of the cable. For details, see Assembling the OT Terminal
and the Power Cable.
Connect one end of the PGND cable to the ground bar on the inner side of the cabinet under
the TMC11H, 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
NOTE
When installing the PGND cable, keep the crimping tube of the OT terminal in the direction shown in
Figure 7-35.
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7 Outdoor Scenario with DC Power Supply (BBU Installed
The Other End
M6 OT terminal
M6 OT terminal
in a TMC11H)
Remarks
Yellow and green cable,
2
16 mm
Yellow and green cable,
2
16 mm
Figure 7-36.
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