Connecting A 3-Kw Ac Power Supply To Ac Power Sources - Cisco Nexus 7702 Hardware Installation Manual

Installing or Replacing Modules, Fan Trays, and Power Supplies
a) Verify that the power switch on the front of the new power supply is set to standby (labelled as 0) and that the power
supply is not connected to any power sources.
b) Hold the handle on the power supply with one hand, place your other hand under the power supply to support its
weight, and position the power supply with its back end at the open power supply bay.
c) Slide the unit all the way into the power supply bay until one of the following situations occurs:
• For a 3-kW power supply, the release latch on the front of the power supply clicks and prevents you from
moving the power supply in or out of the chassis. This action completes the mounting of the power supply on
this chassis.
• For a 3.5-kW power supply, the built-in latch secures the power cable to the power supply.
What to Do Next
• For an AC and HVAC/HVDC (when used with an input AC source) power supply, you must connect
• For a 3-kW DC power supply, you must connect the power supply to the DC power source (see the

Connecting a 3-kW AC Power Supply to AC Power Sources

You use one power cord to connect a 3-kW power supply to its AC power source and to ground the power
supply. Depending on the power mode that you use for the switch, you either connect all of the power supplies
to one AC power source or you connect half of the power supplies to one AC power source and the other half
to another AC power source:
• For combined power mode (no power redundancy), you need enough power supplies to power all switch
• For power supply redundancy mode (n+1 redundancy mode), you need enough power supplies to power
• For input source redundancy (grid redundancy) mode or full redundancy mode, you need twice the
Before You Begin
Before you connect power supplies to one or two power sources, ensure all of the following:
it to an AC power source (see the
Connecting a 3.5-kW HVAC/HVDC Power Supply to AC Power Sources
be automatically grounded through its power cable.
"Connecting a DC Power Supply to DC Power Sources" topic).
operations and connect all of the power supplies to the same AC power source. You can install the power
supplies in any open power supply slot in the chassis.
all switch operations and one extra power supply that can replace a failing power supply. You connect
all power supplies to the same AC power source. You can install the power supplies in any open power
supply slot in the chassis.
number of power supplies needed to power the switch operations. You connect half of the power supplies
to one power source for active power and the other half to another power source for redundant power.
You must ensure that the power supplies on the left side of the chassis are connected to one grid and
that the power supplies on the right side of the chassis are connected to the other grid.
Connecting a 3-kW AC Power Supply to AC Power Sources
Connecting a 3-kW AC Power Supply to AC Power Sources
Cisco Nexus 7702 Hardware Installation Guide
and
topic). The power supply will
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