H3C Technologies H3C S7500E Series Switches - Manual (Page 41)

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Figure 28 Connecting the PSR320-D/PSR650-D power cable
(1) Protection cover (2) Screws
(3) DC wiring terminals (4) Grounding sign
Connecting the PSR1400-D power cable
CAUTION:
When connecting the DC power cable to the DC wiring terminals, make sure the – end of the circuit
breaker at the power input end is off.
To connect the PSR1400-D power cable:
1. Loosen the captive screws on the protection cover with a Phillips screwdriver and remove the
protection cover. There are two flat washers, one spring washer, and one M6 fastening nut from
inside to outside on each wiring terminal.
2. Loosen the captive nuts on four wiring terminals with a M6 socket wrench, and remove the captive
nut, spring washer, and one flat washer in turn from each wiring terminal.
3. Connect the end of the blue DC power cable marked with – to the negative terminal (–) on the
power module.
4. Connect the end of the black DC power cable marked with + to the RTN (+) terminals on the power
module.
5. Put the flat washer and spring washer on the wiring terminal in turn and screw up the captive nut
with the M6 socket wrench. Repeat this step for the other three terminals.
6. Put the protection cover on the wiring terminals and faster the captive screws.
7. Connect the other ends of the DC power cables to the wiring terminals that provide a power supply
to the switch.