Huawei DBS3900 Installation Manual page 129

DBS3900 (ICR)
Installation Guide
Table 15-5 Specifications of a BBU power cable
Power Device
DCDU-03B
DCDU-11B
DCDU-12B
This section describes how to install the BBU power cable when the DCDU-03B is used as the power device.
Procedure
Step 1 Add a connector to the BBU power cable on the power device side according to the instructions
in Assembling the OT Terminal and the Power Cable.
Step 2 Install the BBU power cable, as shown in
1.
2.
Step 3 Lay out the cable according to the instructions in
ties to bind the cable.
Issue 12 (2015-04-30)
NOTE
NOTE
A 3V3 connector has been added to one end of the BBU power cable before delivery. Another connector
must be added to the other end of the cable onsite.
Connect the 3V3 connector at one end of the BBU power cable to the PWR port on the
UPEU in the BBU. Then tighten the screws on the connector to 0.25 N·m (2.21 lbf·in.).
Connect the blue and black OT terminals at the other end of the BBU power cable to the
NEG(-) and RTN(+) terminals, respectively, in the LOAD6 column on the DCDU-03B.
Then tighten the screws on the connector to 1.2 N·m (10.61 lbf·in.).
Figure 15-18 Installing the BBU power cable
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Copyright © Huawei Technologies Co., Ltd.
Connector on the BBU
Side
3V3 connector
3V3 connector
3V3 connector
Figure 15-18.
15.1 Cabling
15 Installing Cables
Connector on the Power
Device Side
OT terminal (M4) bent by
o
90
Tool-less female connector
(pressfit type)
EPC4 Connector
Requirements, and use cable
124