Huawei DBS3900 Installation Manual page 103

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DBS3900 (Ver.B)

Installation Guide

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

Issue 06 (2011-09-15)

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.

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

Huawei Proprietary and Confidential

6 Outdoor Scenario with AC Power Supply (BBU Installed

in an APM30H)