Huawei Technologies Proprietary
4-7
1) Power switch 2) DC input receptacle
Figure 4-6 DC-input power socket on the AR 28-12/28-13/28-14
II. Connecting the DC-input power cord
A DC-input power cord is made up of one –48 V blue power cord and one black PGND
wire.
TO BGND TO BGND(1)
TO -48V
TO -48V(1)
1) Main label
Figure 4-7 DC-input power cord for the AR-28-10/28-11
Figure 4-8 DC-input power cord for the AR 28-12/28-13/28-14
Follow these steps to connect the DC-input power cord:
1) Check that the PGND is securely connected to the earth ground.
2) Check that the power switch of the router is placed in the OFF position. Then,
connect one end of the DC-input power cord (including DC PGND connector and
–48V power cord connector) to the power socket on the router chassis, and the
other end (including DC PGND connector and –48V power cord connector) to the
–48 VDC power source.
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