Dell Force10 S25-01-GE-24P Manual - Page 28

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Dell Force10 S25-01-GE-24P Manual
Connect the supplied AC power cord first to either receptacle of the S25P (on the right as you face the rear
of the chassis) and then to the power source (see
secure. If you connect both AC power supplies, ideally you would connect them to separate circuits.

S25P-DC

As shown below (see also
terminal blocks on the left side (as you face the front of the switch). The terminal block on the left
corresponds to the DC1 status LED on the front left of the switch; DC2 is on the right.
You must provide your own cables to connect to the power source. Cables must be sized for 11.5 A service
at -48VDC input (per NEC in the United States. Internationally, follow local safety codes.) Before you
make the cable connections, apply a coat of antioxidant paste to unplated metal contact surfaces. File
unplated connectors, braided straps, and bus bars to a shiny finish.
1
Make sure that the remote power source (the circuit breaker panel) is in the OFF position.
2
Remove the safety cover from the DC terminal block.
3
Connect the grounding cable to the FG terminal first, then connect the opposite end to the appropriate
grounding point at your site to ensure an adequate chassis ground.
4
Connect the -48 V and -48 V RTN (Return) cables to the switch terminals and then to the remote
power sources, ideally on separate circuit breakers.
5
Replace the safety covers on the DC terminal blocks.
6
If you are connecting both terminal blocks, do not supply power until 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.
28
Figure 4 on page
15), the S25P-DC (cat. name S25-01-GE-24P-DC) has two DC
Power Requirements on page
34). Ensure that the cord is
Installing the S25P