Cisco Nexus 7004, Руководство по установке и справочное руководство по оборудованию

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6-4
Cisco Nexus 7000 Series Hardware Installation and Reference Guide
OL-23069-07
Chapter 6 Installing Power Supplies
Connecting an AC Power Supply to AC Power Sources
Note When you plug in an AC power supply to its power source, you automatically ground the power supply
through its power cable. For additional grounding protection for the rest of the chassis and its modules,
you must ground the chassis before installing its modules.
You connect the AC power supplies differently as follows:
•
For a 3-kW power supply, you connect one power cable to the power supply and one AC power
source. For power redundancy, you connect multiple power supplies to one or more power sources
in the following ways:
– For combined power mode or power supply redundancy mode, you connect all of the power
supplies in the same chassis to the same power source.
–
For input source redundancy mode or full redundancy mode, you connect half of the power
supplies in the chassis to one power source and the other half to another power source.
• For a 6-kW AC power supply, you connect one or two power cables to the power supply and one or
two AC power sources. For power redundancy, you connect the power cables for each power supply
to power sources in the following ways:
–
For combined power mode, you connect one or both power cables to the same AC power source.
–
For power-supply redundancy mode, you connect both power cables to the same AC power
source and you have one more power supply than required to power the modules in the chassis.
–
For input-source redundancy mode, you connect the two power cables to different power
sources.
– For full redundancy mode, you connect the two power cables to different power sources and you
have one more power supply than required to power the modules in the chassis.
•
For a 7.5-kW AC power supply, you connect the two installed power cables to one or two AC power
sources. For power redundancy, you connect the power cables for each power supply in the
following ways:
– For combined power mode, you connect one or both power cables to the same AC power source.
–
For power-supply redundancy mode, you connect both power cables to the same AC power
source and you have one more power supply than required to power the modules in the chassis.
–
For input-source redundancy mode, you connect the two power cables to different power
sources.
–
For full redundancy mode, you connect the two power cables to different power sources and you
have one more power supply than required to power the modules in the chassis.
Note
The 3- and 6-kW power supply cables are shipped in the system accessory kit, and the 7.5-kW power
supply cables are permanently attached to those power supplies. Check the power cables with the list of
available power cables in the accessory kit for the chassis that you ordered (see
Appendix C, “Accessory
Kits Contents” ). If you do not have the correct cables, contact Cisco TAC.
Warning Read the installation instructions before connecting the system to the power source. Statement 1004
This section includes the following topics:
•
Prerequisites for Connecting AC Power Supplies to AC Power Sources, page 6-5