Cisco Systems 8500 User Manual
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Cisco 8500 Series Wireless Controller Installation Guide
Chapter 1 Cisco 8500 Series Wireless Controller Installation Guide
Replacing a Hot-Swap -48 VDC Power Supply
•
Connect the equipment to a properly grounded safety extra low voltage (SELV) source. A SELV
source is a secondary circuit that is designed so that normal and single fault conditions do not cause
the voltages to exceed a safe level (60 V direct current).
source is a secondary circuit that is designed so that normal and single fault conditions do not cause
the voltages to exceed a safe level (60 V direct current).
•
Incorporate a readily available approved and rated disconnect device in the field wiring.
•
See the specifications in the product documentation for the required circuit-breaker rating for branch
circuit overcurrent protection.
circuit overcurrent protection.
•
Use copper wire conductors only.
•
See the specifications in the product documentation for the required torque values for the
wiring-terminal screws.
wiring-terminal screws.
Safety Information
To install the DC power supply, complete the following steps:
Step 1
If the controller is operating, turn off the server and peripheral devices.
Step 2
Turn off the circuit breaker for the DC power source to which the new power supply will be connected.
Disconnect the power cord from the DC power source.
Disconnect the power cord from the DC power source.
Step 3
Attach the DC power cable to the new power supply.