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Cisco Nexus 7000 Series Hardware Installation and Reference Guide
OL-23069-07
Chapter 6 Installing Power Supplies
Connecting a DC Power Supply to DC Power Sources
Step 5 If you are connecting a 6-kW DC power supply, insert the plug end of one or two power cables (Cisco
part number N7K-DC-CAB=) to the power receptacles on the power supply and tighten its two screws
to 11 to 15 in-lb (1.2 to 1.7 N·m).
Note If the plug does not insert easily, turn it over and reinsert it.
Step 6 Attach each set of four power supply and four power source cables to the PIU as follows:
a. Remove the safety cover for a set of four PIU terminals (see Callout 1 in Figure 6-16).
Figure 6-16 Connecting Power Cables to a PIU
b.
In each of the uncovered terminal slots, unscrew and remove two nuts (remove a total of eight nuts)
as shown by Callout 4 in Figure 6-16.
c. Attach the lugs for each of the four power supply cables to four terminals and fasten each lug with
two nuts. Be sure that each negative cable is attached to a negative terminal and each positive cable
is attached to a positive terminal as marked by the PIU slots. See Callouts 2 and 3 in Figure 6-16.
1 Remove the cover. 3 Place the positive power supply cable lugs (2)
on the front positive posts.
2 Place the negative power supply cable lugs (2)
on the front negative posts. Use one color for
negative cables and another color for positive
cables.
4 Fasten all four lugs with eight M6 nuts and
tighten to 40 in-lb (4.5 N·m).
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