3-15
Connecting a DC Power Cord (–48 VDC equipment-room power supply)
Step1
Switch off the DC power module.
Step2
Keep the upside of the DC plug shipped with the device on top and plug it in the DC receptacle (see
callout 1 in
Figure 3-22
). (If you plug it with the upside down, the insertion is not smooth because of the
specific structure design of the DC receptacle and the plug.)
Step3
Use a flat-blade screwdriver to fix the two screws on the DC plug clockwise to secure the plug to the DC
receptacle (see callout 2 in
Figure 3-22
).
Step4
Connect the other end of the DC power cord to the external –48 VDC equipment-room power supply
system.
Figure 3-22
Connect a DC power cord
Pay attention to the positive (+) and negative (-) marks on the power cord to avoid connection mistakes.
Connecting a power cord to the PSR300-12D1 (–54 VDC RPS power supply)
The PSR300-12D1 supports –54 VDC RPS power supply. Follow these steps to connect the power
cord:
Step1
Keep the upside of the –54 VDC RPS plug on top and plug it in the RPS DC receptacle (see callout 1 in
Figure 3-22
). (If you plug it with the upside down, the insertion is not smooth because of the specific
structure design of the RPS DC receptacle and the RPS plug.)
Step2
Use a flat-blade screwdriver to fix the two screws on the RPS plug clockwise to secure the plug to the
RPS DC receptacle (see callout 2 in
Figure 3-22
).
Step3
Connect the other end of the RPS DC power cord to the external –54 VDC RPS power supply system.
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