Cisco Nexus 9504 Hardware Installation Manual page 23

Preparing the Site
Configured Power Supply
Power
Redundancy
Mode
combined N9K-PAC-3000W-B
N9K-PDC-3000W-B
N9K-PUV-3000W-B
N9K-PUV2-3000W-B
Step 5 Be sure that the power source circuits are dedicated to the switch and not to other electrical equipment.
For combined mode or n+1 redundancy mode, you need only one dedicated circuit. For n+n redundancy, you must have
two dedicated power circuits, with each circuit powering half of the 3-kW power supplies. The requirements for each
circuit are listed in the following table.
Power Supply
3-kW AC power supply (N9K-PAC-3000W-B)
3-kW Universal AC/DC power supply
(N9K-PUV-3000W-B and N9K-PUV2-3000W-B)
3-kW DC power supply (N9K-PDC-3000W-B)
Step 6 Plan the placement of the input power receptacles within reach of the power cables that are used for each power supply,
see the following table for the maximum distances.
Typically, power receptacles are placed on the rack with the switch.
Power Supply
3-kW AC power supplies
3-kW Universal AC/DC power supplies
3-kW DC power supplies
Instructions and Guidelines
Instructions:
Install the number of power supplies as determined in step 2.
Guidelines:
Recommended if the number of power supplies from step 2 is 1
or higher.
Number of Circuits
1 (combined mode or n+1 redundancy
mode)
2 (n+n redundancy mode)
1 (combined mode or n+1 redundancy
mode)
2 (n+n redundancy mode)
1 (combined mode or n+1 redundancy
mode)
2 (n+n redundancy mode)
Maximum Distance Between Receptacle and Power Supply
8 to 12 feet (2.5 to 3.5 m)
14 feet (4.27 m)
You provide four 6-gauge wires (recommended) and cuts that wire to the
required length. We provide four 6-gauge lugs to connect those wires to the
DC power supply.
Cisco Nexus 9504 ACI-Mode Switch Hardware Installation Guide
Planning for Power Requirements
Input n + n n +1
Source Power Power
or Grid Supply Supply
Redundancy Redundancy Redundancy
No No No
Requirement for Each Circuit
16 A at 200 to 240 VAC
AC power: 200 to 277 VAC
DC power: 240 to 380 VDC
45A at -40 to -75 VDC
(-48 VDC nominal US)
(-60 VDC nominal
international)
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