b. Connect the blue core wire labeled NEG(-) to the - port and the black/red/brown core wire
labeled RTN(+) to the + port on the female fast connector (pressfit type), and then tighten
the screws using a Phillips screwdriver to 1.4 N·m (12.39 lbf·in.), as shown in Figure 7.
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.
NOTE:
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.
Figure 7 Adding a female fast connector (pressfit type) to two core wires
c. 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.
5. Strip the specified length of the sheath off the power cable to expose the intact shield layer, as
shown in Figure 8.
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