Chapter 2 Installing and Removing Power Components

Installing an AC Power Shelf

Installing an AC Power Shelf

This section describes how to install an AC power shelf in the Cisco CRS-1 4-slot line card chassis. The power shelf encloses four power supplies and the power distribution connections and wiring. The AC power shelf is installed in the front (PLIM) side of the chassis.

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-1 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 240V VAC nominal, 50 to 60 Hz (4x) 11A.

For additional power details, see Cisco CRS-1 Carrier Routing System 4-Slot Line Card Chassis System Description, or in this document, see Appendix A, “Cisco CRS-14-Slot Line Card Chassis

System Specifications.”

For complete information on regulatory compliance and safety, see Cisco CRS-1 Carrier Routing System Regulatory Compliance and Safety Information.

Figure 2-18

AC Power Shelf

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Prerequisites

Remove the air intake grille from the bottom of the chassis.

 

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Cisco Systems Cisco CRS-1 manual Installing an AC Power Shelf, System Specifications