Huawei Technologies Co. Ltd RRU3278 ユーザーズマニュアル
RRU3278
Installation Guide
Installation Guide
11 Appendix
Issue 05 (2017-03-10)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
94
Colors of wires in RRU power cables vary depending on regions. In figures of this section, the blue one
is an NEG(-) cable, and the black one is an RTN(+) one.
is an NEG(-) cable, and the black one is an RTN(+) one.
Step 5 Use a Phillips screwdriver to loosen the screws, as shown in Figure 11-7.
Figure 11-7 Tightening screws
Step 6 Connect the blue core wire labeled NEG(-) to the - port and connect the red/black/brown core
wire labeled RTN(+) to the + port on the tool-less female connector (pressfit type). Then,
tighten the screws using a Phillips screwdriver, and then use a torque screwdriver to tighten
the M4 screws to 1.4 N·m (12.39 lbf·in.), as shown in Figure 11-8.
tighten the screws using a Phillips screwdriver, and then use a torque screwdriver to tighten
the M4 screws to 1.4 N·m (12.39 lbf·in.), as shown in Figure 11-8.
Do not reversely connect the positive and negative poles. Reverse connection of positive and
negative poles may result in equipment malfunctions or personal injury. Therefore, check the
power cable connection before powering on the RRU.
negative poles may result in equipment malfunctions or personal injury. Therefore, check the
power cable connection before powering on the RRU.