H3C PSR750-A, Руководство пользователя

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2-4
Figure 2-6 Connect an AC power cord I
Figure 2-7 Connect an AC power cord II
The PSR750-A is equipped with two built-in fans for heat dissipation. The fans rotate at a low speed
after the power cord is connected (AC OK is on) but with the power module in the off state. When you
switch on the power module, the fans adjust their rotating speed according to the module’s temperature.
Connecting DC Power Cord
To ensure normal PoE power supply to the S5800-60C-PWR using the PSR750-D, you need to select
the RPS1000-A3 of H3C that provides a voltage range from –52V to –55V. Follow these steps to
connect the PSR750-D to the RPS1000-A3:
1) Use a Phillips screwdriver to loosen the captive screws and remove the washer of the PSR750-D,
as shown in Figure 2-8 .
2) Insert the captive screws through the washers and OT terminals of the RPS power cords, as shown
in callout 1 in Figure 2-9 . Pay attention to the positive (+) and negative (-) marks on the power cords
to avoid connection mistakes.
3) Use the Phillips screwdriver to fix the RPS power cords to the PSR750-D, and ensure a good
contact between the OT terminals and the PSR750-D, as shown in callout 2 in Figure 2-9 .