Step 6
After all the I/O modules come online, power up the remaining FAB2 modules by using the
no poweroff xbar
moduleNumber
command.
Installing or Replacing a Power Supply in a Switch Chassis
You can install up to eight power supplies of the following types:
• 3-kW AC power supply (N77-AC-3KW)
• 3-kW DC power supply (N77-DC-3KW)
• 3.5-kW HVAC/HVDC power supply (N77-HV-3.5KW)
If you leave any power supply slots empty, you must install a blank filler plate (N77-3KPS-BLANK-H=) in
that slot to maintain the designed airflow.
The chassis ships with power supplies already installed but you can optionally remove the power supplies to
make the chassis lighter for the installation.
Note
You follow the same steps to install AC, DC and HVAC/HVDC power supplies into the switch, but you
ground them differently. For an AC and HVAC/HVDC power supply, you automatically ground it when you
connect its power cable to the power supply and the power source. For a 3-kW DC power supply, you do not
directly connect the power supply to the earth ground.
Before you begin
• The switch chassis must be installed in a cabinet or rack that is secured to the data center.
You need the following additional tools and equipment:
• Nut driver attachment for Number 1 Phillips-head screwdriver or ratchet wrench with torque capability
(used only for DC power supplies)
• Crimping tool
• For 3-kW DC power supplies, you need four power cables sized to reach the DC power source or power
interface unit (PIU)
• Grounding wire—Size this wire to meet local and national installation requirements. For U.S. installations,
you must use a 6 AWG copper conductor. For installations outside the U.S., consult your local and
national electrical codes. The length of the grounding wire depends on the proximity of the switch to
proper grounding facilities.
Step 1
If you need to open a power supply slot for another power supply, follow these steps:
If you neet to remove a blank filler plate, unscrew its captive screws and pull it off the chassis. Go to Step 2.
Note
a) Turn off the power for the power supply that you are removing, as follows:
Cisco Nexus 7710 Switch Site Preparation and Hardware Installation Guide
OL-30452-01.
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Installing or Replacing Modules, Fan Trays, and Power Supplies
Installing or Replacing a Power Supply in a Switch Chassis