Dell Force10 S25 Series Skrócona instrukcja obsługi - Strona 13
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Step
Task
Connect the -48 V and -48 V RTN (Return) cables to the switch
3
terminals and then to the remote power sources.
Replace the safety covers on the DC terminal block.
4
S25P
The S25P has two AC power supplies acting in load-sharing mode or can be
used independently. Use the power cords shipped with the S25P to connect it to
AC power outlets, ideally on separate circuits. Several versions of the power
cord are available, based on country requirements.
S25P-DC
The PSU side of the S25P-DC contains two terminal blocks for two DC power
supply inputs acting in load-sharing mode. The left terminal block, as you face
the PSU side, corresponds to the DC2 status LED on the I/O side of the switch;
DC1 is on the right. Cables must be sized for 11.5 A service at -48VDC input
(per NEC in the United States. Internationally, follow local safety codes.)
Step
Task
Make sure that the remote power source (the circuit breaker panel) is in
1
the OFF position.
Remove the safety cover from the DC terminal block.
2
Connect the grounding cable to the FG terminal first, then connect the
3
opposite end to the appropriate grounding point at your site to ensure an
adequate chassis ground.
Connect the -48 V and -48 V RTN (Return) cables to the switch
4
terminals and then to the remote power sources, ideally on separate
circuit breakers.
Replace the safety covers on the DC terminal blocks.
5
If you are connecting both terminal blocks, do not supply power until
6
both terminal blocks are connected. You can supply power to either one
or both. The S25P-DC uses the power supplies in load-sharing mode
and does not set a precedence for either power source. Failover is
hitless.
Installing the Hardware
11