Huawei DBS3900 Installation Manual page 429

DBS3900 (Ver.B)
Installation Guide
Step 3 Route the cable by referring to
the cable.
Step 4 Label the installed cables. For details, see Attaching a Cable-Tying Label.
----End
Installing a BBU Power Cable
A BBU power cable feeds power into a BBU.
Context
l
l
Procedure
Step 1 Add OT terminals to a BBU power cable. For details, see Assembling the OT Terminal and the
Power Cable.
Step 2 Install the BBU power cable, as shown in
1.
2.
Issue 06 (2011-09-15)
In the triple mode scenario, two BBUs are required. A second BBU power cable is installed
in the same manner as the first BBU power cable.
Table 12-4 lists the specifications for a BBU power cable when a DCDU-03B supplies
power.
Table 12-4 Specifications of a BBU power cable
Cable
BBU power RTN(+)
cable wire
NEG(-)
wire
NOTE
The colors and structures of cables vary according to countries and areas. If the cables are purchased
locally, the colors and structures of the cables may be different.
NOTE
A 3V3 power connector is added to one end of a BBU power cable, and you only need to add OT terminals
to the other end onsite.
Link the 3V3 power connector at one end of the BBU power cable to the -48 V port on the
UPEU in the BBU, and then tighten the screw on the connector until the tightening torque
reaches 0.25 N·m.
Link the OT terminals on the blue and black wires at the other end to the wiring terminals
labeled NEG(-) and RTN(+) near the LOAD6 label on the DCDU-03B respectively.
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12 Indoor Scenario with DC Power Supply (BBU Installed in
12.4.1 Cabling Requirements, and then use cable ties to bind
One End
3V3 power
connector
Figure 12-13.
a 19-Inch Rack)
The Other End
OT terminals bent by
2
90° (M4, 6 mm )
OT terminals bent by
2
90° (M4, 6 mm )
Descripti
on
Black
Blue
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