Cisco Nexus 7000 Series Hardware Installation And Reference Manual page 140

Connecting a DC Power Supply Unit to DC Power Sources
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
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
Figure
unit (see
connected to a different DC power grid (see
Figure 5-3
1
DC power grid
2 Isolated inputs from DC power grid
Figure 5-4
1
DC power grid
2 Isolated inputs from DC power grid
Cisco Nexus 7000 Series Hardware Installation and Reference Guide
5-8
5-3). For 6 kW of power, you connect four isolated inputs through two plugs to the power supply
Figure 5-4). For 3 kW of power with input source redundancy, you connect the two plugs, each
Connecting DC Power to a 3-kW DC Power Supply Unit
Connecting DC Power to a 6-kW DC Power Supply Unit
Chapter 5
Figure 5-5).
3
DC power supply unit
4 Plug with two isolated inputs
3
DC power supply unit
4 Two plugs, each with two isolated inputs from
the DC power grid
Installing Power Supply Units
OL-23069-06