Dell Force10 S25N-S50N Installing S25N and S25V Systems - Page 36

DC-to-DC Cable, DC Power Module,

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Step 2. Task Insert the plastic plug of the DC-to-DC cable into the receptacle on the lower left side of the PSU (Figure 23). Note that one of the three leads on the plug has a trapezoidal key , which goes in the receptacle that is toward the center of the PSU. The key is not strong enough to resist being inserted in the opposite receptacle, and it is difficult to see, so you must take care to insert it correctly. To help you orient it, note that the top side of the plug has a knurled pattern. Figure 23 DC-to-DC Connection 11.5 FG -48V RTN Current -48V Sharing S25V fn00153s25V DC-to-DC Cable DC Power Module 3. Tighten the captive screws on the sides of the connector cable by turning them clockwise. 4. Insert the supplied AC-to-AC cable into the AC receptacle of the PSU. Ideally, you should connect that cable to an AC source separate from the AC connection made directly to the S25V. Caution: Use only the power cords supplied with the power supply. Do not supply power to the system until the power supply and modules have been installed. 36 Installing Backup Power

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36
Installing Backup Power
2.
Insert the plastic plug of the DC-to-DC cable into the receptacle on the lower left side of the PSU
(
Figure 23
).
Note that one of the three leads on the plug has a trapezoidal key
, which goes in the receptacle
that is toward the center of the PSU. The key is not strong enough to resist being inserted in the
opposite receptacle, and it is difficult to see, so you must take care to insert it correctly. To help you
orient it, note that the top side of the plug has a knurled pattern.
Figure 23
DC-to-DC Connection
DC-to-DC Cable
fn00153s25V
DC Power Module
11.5
FG
-48V
RTN -48V
Current
Sharing
S25V
3.
Tighten the captive screws on the sides of the connector cable by turning them clockwise.
4.
Insert the supplied AC-to-AC cable into the AC receptacle of the PSU. Ideally, you should connect
that cable to an AC source separate from the AC connection made directly to the S25V.
Caution:
Use only the power cords supplied with the power supply. Do not supply power to the system until
the power supply and modules have been installed.
Step
Task