Cisco Nexus 9508 NX-OS User Manual

n +1
Power
Supply
Redundancy
n + n
Power
Supply
Redundancy
Input
Source
or Grid
Redundancy
Instructions and GuidelinesPower SupplyConfigured
Power
Redundancy
Mode
NoNoNoInstructions:
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.
N9K-PAC-3000W-B
N9K-PDC-3000W-B
N9K-PUV-3000W-B
N9K-PUV2-3000W-B
combined
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.
Requirement for Each CircuitNumber of CircuitsPower Supply
16 A at 200 to 240 VAC1 (combined mode or n+1 redundancy
mode)
2 (n+n redundancy mode)
3-kW AC power supply (N9K-PAC-3000W-B)
AC power: 200 to 277 VAC
DC power: 240 to 380 VDC
1 (combined mode or n+1 redundancy
mode)
2 (n+n redundancy mode)
3-kW Universal AC/DC power supply
(N9K-PUV-3000W-B and N9K-PUV2-3000W-B)
45A at -40 to -75 VDC
(-48 VDC nominal US)
(-60 VDC nominal
international)
1 (combined mode or n+1 redundancy
mode)
2 (n+n redundancy mode)
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.
Maximum Distance Between Receptacle and Power SupplyPower Supply
8 to 12 feet (2.5 to 3.5 m)3-kW AC power supplies
14 feet (4.27 m)3-kW Universal AC/DC power supplies
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.
3-kW DC power supplies
Cisco Nexus 9508 NX-OS Mode Switch Hardware Installation Guide
17
Preparing the Site
Planning for Power Requirements

Cisco Nexus 9508 NX-OS Specifications

General

Brand	Cisco
Model	Nexus 9508 NX-OS
Category	Switch
Language	English