S e n d d o c u m e n t c o m m e n t s t o n e x u s 7 k - d o c f e e d b a c k @ c i s c o . c o m
5-8
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
To connect a DC power supply unit to a DC power source, you must connect two isolated inputs from
the DC power grid to the power supply unit for each 3 kW of output power provided by the power supply
unit. For 3 kW of power, you connect two isolated inputs through one plug to the power supply unit (see
). For 6 kW of power, you connect four isolated inputs through two plugs to the power supply
unit (see
). For 3 kW of power with input source redundancy, you connect the two plugs, each
connected to a different DC power grid (see
Figure 5-3
Connecting DC Power to a 3-kW DC Power Supply Unit
Figure 5-4
Connecting DC Power to a 6-kW DC Power Supply Unit
1
DC power grid
3
DC power supply unit
2
Isolated inputs from DC power grid
4
Plug with two isolated inputs
1
DC power grid
3
DC power supply unit
2
Isolated inputs from DC power grid
4
Two plugs, each with two isolated inputs from
the DC power grid