Cisco Nexus 9336PQ, Руководство по установке оборудования

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If the power supply does not fit into the open slot, turn the module over before sliding it carefully into the open
slot. Note
Step 2 Test the installation by trying to pull the power supply out of the slot without using the release latch.
If the power supply does not move out of place, it is secured in the slot. If the power supply moves, carefully press it all
the way into the slot until it clicks in place.
Step 3 Attach the power cable to the electrical outlet on the front of the power supply.
Step 4
Make sure that the other end of the power cable is attached to the appropriate power source for the power supply.
Depending on the outlet receptacle on your power distribution unit, you might need the optional jumper cable
to connect the switch to your outlet receptacle. Note
Step 5 Verify that the power supply is operational by making sure that the power supply LED is green. For information on
what the power supply LEDs indicate, see Power Supply LEDs, on page 56 .
Installing a DC Power Supply
This topic is for installing the 48-V DC power supply into switch chassis.
You can replace one power supply while the other one provides power to the switch.
Before you begin
• The circuit breaker for the DC power source for the power supply must be turned off.
• The power supply that you are installing must be capable of using the same airflow direction as the fan
trays installed in the same switch
• A DC power source must be within reach of the power cable that will be used with the replacement power
supply. If you are using n + n power redundancy, there must be a separate power source for each power
supply installed in the chassis (do not mix AC and DC power sources for the same switch). Otherwise,
only one power source is required.
• There must be an earth ground connection to the chassis that you are installing the replacement module.
Typically, the chassis is grounded by its metal-to-metal connection to a grounded rack. If you need to
ground this chassis by another means, see
Grounding the Chassis, on page 21 .
• We recommend 8-AWG wire for DC installation in the U.S.
• All DC power supplies have reverse polarity protection. When you inadvertently connect the input power
(+) to the DC PSU’s – terminal and the input power – to the DC PSU’s (+) terminal, the PSU will not
be damaged and will operate fine after the input power feeds are correctly wired.
Step 1 Holding the replacement power supply with one hand underneath the module and the other hand holding the handle, turn
the power supply so that its release latch is on the right side and align the back end of the power supply (the end with the
electrical connections) to the open power supply slot before carefully sliding the power supply all the way into the slot
until it clicks into place.
Cisco Nexus 9336PQ ACI-Mode Switch Hardware Installation Guide
40
Replacing Modules
Installing a DC Power Supply