CAUTION
The blue and black wires on which the easy power receptacle (pressfit type) connector is
added respectively correspond to the left and right ports on the EPS subrack.
2. If OT terminals are at the other end of the RRU power cable, respectively link the OT
terminals on the blue and black (or brown) wires to the NEG(-) and RTN(+) wiring
terminals in the cabling cavity of an RRU. If an easy power receptacle (pressfit type)
connector is at the other end of the RRU power cable, respectively link the blue and black
(or brown) wires to the NEG(-) and RTN(+) ports in the cabling cavity of an RRU.
Figure 6-80 Installing an RRU power cable
Step 3 In a position 20 cm away from the cable outlet module, strip the jacket for about 25 mm off the
RRU power cable to expose the shield layer. Thread the cable through the ground clip to ensure
full contact between the shield layer and the ground clip, and then tighten the M4 screws on the
clip until the tightening torque reaches 1.2 N·m, as shown in Figure 6-81.
DBS3900 (Ver.B)
Installation Guide
6 Outdoor Scenario with AC Power Supply (BBU Installed
in an APM30H)
Issue 06 (2011-09-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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