Huawei DBS3900 Installation Manual page 136

DBS3900 (ICR)
Installation Guide
l
Issue 12 (2015-04-30)
To install the DCDU power cable and monitoring signal cable in the scenarios with 220 V
AC power supply, perform the following operations:
1. Cut the power cable to a length suitable for the actual cable route.
2. Add an OT terminal to each end of the power cable according to the instructions in
Assembling the OT Terminal and the Power Cable.
3. Connect one end of the power cable to the wiring terminals marked LOAD1(-)/
LOAD2(-) and RTN(+) on the wiring unit of the AC/DC power system, as shown in
Figure 15-23.
In Figure 15-23, the red line is the power cable, and the blue line is the monitoring
signal cable.
Figure 15-23 DCDU power cable and monitoring signal cable in scenarios with 220
V AC power supply
4. Connect the other end of the power cable to the wiring terminals marked NEG(-) and
RTN(+) on the DCDU-03B.
5. Connect one end of the monitoring signal cable to the MON1 port on the UPEU, and
the other end to the RS232/RS485 port on the AC/DC power system.
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