Huawei DBS3900 Installation Manual page 76

RRU3249
Installation Guide
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Issue DraftA (2015-05-30)
Tighten the screws using a Phillips screwdriver, as shown in
Figure 10-6 Tightening screws
Connect the blue core wire labeled NEG(-) to the - port and the black/brown core wire
labeled RTN(+) to the + port on the tool-less female connector (pressfit type), and 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
DANGER
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.
Figure 10-7 Adding a tool-less female connector (pressfit type) to two core wires
After the core wires are installed, ensure that each core wire is securely installed after being
dragged with a torque of 30 N•m and all copper wires are inserted in the connector terminal
socket.
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10 Appendix
Figure 10-6.
Figure 10-7.
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