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4
Connect the Power (continued)
DC power supplies
Warning
DC-input circuit by turning the circuit breaker OFF.
1
Verify that each power supply is correctly installed in its bay and that the power switches
are OFF (0).
2
On each power supply, remove the screws securing the terminal block cover and slide the
cover straight off the terminal block.
3
Attach the appropriate lugs to the DC-input wires. (Suggested lugs are AMP 322985 or
52941; suggested DC-input wires are 10-AWG copper conductors.)
4
Wire the DC-input power supply to the terminal block (see figure), ensuring that all wire
connections are secure:
a) Connect the ground wire to the ground terminal (you should always connect the
10
ground wire first and disconnect it last)
b) Connect the –48V wire to the "−" terminal
c) Connect the –48V return to the "+" terminal
Before performing the following procedure, remove power to the
Positive (+)
Negative (-)
Ground
o
DC
FAN
OUT PUT
OK
OK
FAIL
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