Optional) Installing The Power Cable And Monitoring Signal Cable For The Dcdu - Huawei DBS3900 Installation Manual

15 Installing Cables
15.8 (Optional) Installing the Power Cable and Monitoring
Signal Cable for the DCDU
This section describes the procedure for installing the power cable and monitoring signal cable.
Context
The cross-section area of the power cable for the DCDU is 25 mm
In the 220 V AC and +24 V DC power supply scenario, the power cable needs to be installed
between the power equipment and the DCDU, and the monitoring signal cable needs to be
installed between the power equipment and the BBU.
Procedure
l
15-54
NOTE
In the -48 V DC power supply scenario, the power cable is connected to the DCDU directly, and the
monitoring signal cable is connected to the BBU directly.
Installing the power cable and monitoring signal cable for the DCDU in the +24 V DC
power supply scenario
1. Prepare the power cable.
(1) Cut the cable to the required length based on the actual cable route.
(2) Add OT terminals to both ends of the cable.
2. Connect one end of the power cable to the wiring terminals labeled LOAD(-) and
RTN(+) on the power equipment (DC/DC).
3. Connect the other end to the wiring terminals labeled NEG(-) and RTN(+) on the
DCDU.
4. Connect one end of the monitoring signal cable for the PSU to the ALM0 port on the
UPEU.
5. Connect the other end to the ALM port on the power equipment (DC/DC).
6. Connect one end of the in-position signal cable for the PSU to the ALM1 port on the
UPEU.
7. Connect the other end to the PRESENT port on the power equipment (DC/DC).
The red cable in Figure 15-30
signal cable.
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
is the power cable, and the blue cable is the monitoring
DBS3900(ICR)
Installation Guide
2
.
Issue 01 (2011-03-30)