Cisco Systems 8-Slot User Manual download pdf (Page 54)

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Cisco CRS Carrier Routing System 8-Slot Line Card Chassis Installation Guide

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Chapter 2 Installing and Removing Power Components

How to Install or Remove Fixed Configuration Power Components

Installing a DC PEM or AC Rectifier

This section describes how to install a DC PEM or AC rectifier in the Cisco CRS 8-slot line card chassis.

For information on the difference between the power types, see the “DC Power Systems” section on

page 2-6 and the “AC Power Systems” section on page 2-11.

The DC PEM or AC rectifier is installed into the front of the chassis, and mates with the PDU that is

installed on the back of the chassis (see the “Installing a PDU” section on page 2-15 for information).

Although there are differences among the different DC PEM or AC rectifiers (AC Wye, AC Delta, and

DC), they are installed in the same manner. (Figure 2-12 shows an AC Wye rectifier for reference.)

Figure 2-12 Fixed Configuration AC Wye Rectifier

Prerequisites

Before performing this task, make sure that the PDU has been installed (see the “Installing a PDU”

section on page 2-15) and remove any cosmetic covers.

Required Tools and Equipment

You need the following tools and part to perform this task:

• ESD-preventive wrist strap

• 6-in. long number 1 Phillips screwdriver

• Fixed configuration power module

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AC rectifier Cisco product number CRS-8-AC-RECT=

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DC PEM Cisco product number CRS-8-DC-PEM=

1 Power switch 3 Handle

2 Module air filter 4 Captive screws

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Cisco Systems 8-Slot User Manual Page 54