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5-17
Cisco Nexus 7000 Series Hardware Installation and Reference Guide
OL-23069-06
Chapter 5 Installing Power Supply Units
Connecting a DC Power Supply Unit to DC Power Sources
Step 3 Size the power cables to the distance between the power supply unit and the PIU. If you need to cut the
cable, cut it at the ends that connect to the PIU, remove 0.75 in. (19 mm) of insulation from the cut end,
and reattach the spade connector to the bare ends.
Warning
Hazardous voltage or energy may be present on DC power terminals. Always replace cover when
terminals are not in service. Be sure uninsulated conductors are not accessible when cover is in
place.
Statement 1075
Step 4 Insert the plug end of one or two power cables (Cisco part number N7K-DC-CAB=) to the power
receptacles on the DC power supply unit as follows:
–
For 3-kW output power, connect one power cable to the power supply unit.
–
For 6-kW output power, connect two power cables to the power supply unit.
–
For 3-kW output power and 3-kW redundancy power, connect two power cables to the power
supply unit.
Note If the plug does not insert easily, turn it over and reinsert it.
Step 5 Fasten each plug to the power supply unit by tightening its two screws to 11 to 15 in-lb (1.2 to 1.7 N·m).
Step 6 For each power cable connected to the power supply unit, connect it to the PIU as follows:
a. Remove a cover from the PIU (see callout 1 in Figure 5-12).
Figure 5-12 Connecting Power Cables to a PIU
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