
Power Distribution Box Installation Guide
H3C S7503-S7506-S7506R Ethernet Switches
1-11
1.5 Installing a DC Power Cable
Caution:
Power off the switch before installing a DC power cable.
Step 1: Wear an ESD-preventive wrist strap.
Step 2: Unscrew the captive screws on the connector lid on the
DC power distribution box and open the lid.
Step 3: Loosen the captive nuts on the connectors with a socket
wrench.
Step 4: Plug the -48 V terminal (with blue lead) of the DC power
cable shipped with the switch into the connector marked with -48 V,
and fasten its captive nut.
Step 5: Plug the GND terminal (with black lead) of the DC power
cable shipped with the switch into the connector marked with RTN,
and fasten the captive nut.
Step 6: Cover the connector lid and fasten the captive screws.
Step 7: Connect the terminals on the other end of the DC power
cable to the connectors on the power source used to supply power to
the switch.