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Cisco CRS Carrier Routing System 4-Slot Line Card Chassis Installation Guide
OL-10971-10
Chapter 2 Installing and Removing Power Components
Installing an AC Power Shelf
The AC-powered chassis contains a single AC power shelf containing four AC power supplies. Each AC
power supply converts input AC power to the –54 VDC used by the Cisco CRS 4-slot line card chassis.
The AC power shelf is configured for single-phase AC power supply wiring (two wires + ground), and
is safety-rated at 110 to 240 VAC nominal, 50 to 60 Hz (4x) 11A.
For additional power details, see
Cisco CRS Carrier Routing System 4-Slot Line Card Chassis System
Description
, or in this document, see
Appendix A, “Cisco CRS 4-Slot Line Card Chassis
System Specifications.”
For complete information on regulatory compliance and safety, see
Cisco CRS Carrier Routing System
Regulatory Compliance and Safety Information
.
Prerequisites
Remove the air intake grille from the bottom of the chassis.
Required Tools and Equipment
You need the following tools and parts to perform this task:
•
ESD-preventive wrist strap
•
Medium flat-blade screwdriver
•
AC Power shelf (Cisco product number: CRS-4-AC-SHELF)
Figure 2-23
shows the AC power shelf.
Figure 2-23
AC Power Shelf
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