Cisco Nexus 7000 Hardware Installation And Reference Manual page 168

Connecting a DC Power Supply to DC Power Sources
Figure 6-6
1
1
1
1
1
3-kW DC power supply (half of the power
supplies are connected to one power grid and the
other half are connected to another power grid
and at least one power supply is redundant)
2 Two DC power grids
If the power supply is too far away for the power cables to reach, you need to install a power interface
unit (PIU) in a rack where the power cable can connect it to the power supply (see the
Power Supply to DC Power Sources through a Power Interface Unit" section on page
Cisco Nexus 7000 Series Hardware Installation and Reference Guide
6-14
Connecting DC Power Supplies to Two Grids for Full Redundancy Mode
- + +
-
- + + -
- + + -
- + + -
2
- + - +
3
3
3
3
3
6-kW DC power supply (each power supply
is connected to two power grids and at least
one power supply is redundant)
Chapter 6 Installing Power Supplies
2
- + - +
"Connecting a
6-18).
OL-23069-07