Cisco PWR-CSS8-850-DC Reference

DC Power Supply Reference
Product Number: PWR-CSS8-850-DC= (DC Power Supply)
This reference contains the following information on the CSS 11800 content services switch DC power supply:
• Redundant Power Supplies
• Installing a Power Supply
• Connecting a DC Power Cable
• Removing a Power Supply
Note: You must install a DC-powered CSS in a restricted access location.
Redundant Power Supplies
The CSS 11800 content services switch enables you to install a redundant power supply to ensure maximum uptime. This
product design requires one power supply for operation. Installing a second power supply provides redundancy. A
redundant power supply is active upon installation and power up, and provides load-sharing capabilities. You may install a
redundant power supply in the chassis without powering down the CSS.
The DC power supply cable requires 12 AWG wire. The 11800 content services switch draws a maximum of 25 amps.
DC systems do not have a power switch. A chassis configured for DC power requires an external power disconnect
device (such as an external circuit breaker).
Before performing the DC installation procedure, ensure that power is removed from the DC circuit. To ensure that all
power is off, locate the circuit breaker that services the DC circuit and switch it off.
Installing a Power Supply
To install a power supply:
1. If necessary, remove the blank panel from the power supply bay.
2. Align the power supply in the slot and slide it carefully into the chassis.
3. Use a flat-head screwdriver to tighten the two captive panel fasteners that secure the power supply to the chassis.
Document Number: 78-11694-02
Warnings
May 2002