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Cisco CRS Carrier Routing System 8-Slot Line Card Chassis Installation Guide
OL-6256-17
Chapter 2 Installing and Removing Power Components
How to Install or Remove Fixed Configuration Power Components
Step 4 Install the new PDUs. See the “Installing a PDU” section on page 2-15.
If you are converting from AC to DC power, you must wire the PDU properly. See the “Installing DC
PDU Cables” section on page 2-19.
Step 5 Install the DC PEMs or AC rectifiers. See the “Installing a DC PEM or AC Rectifier” section on
page 2-22.
Step 6 Power the chassis back up. See the “How to Install or Remove Fixed Configuration Power Components”
section on page 2-13.
Caution Use only one type of fixed configuration PDU—AC Wye, AC Delta, or DC—and its mating AC rectifier
or DC PEM in a chassis at one time.
Installing a PDU
This section describes how to install a PDU 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 PDU is installed into the back of the chassis. After the PDU is installed, you can slide the DC PEMs
or AC rectifiers into the chassis and connect them to the PDU to provide power to the chassis (see the
“Installing a DC PEM or AC Rectifier” section on page 2-22 for details). Although there are differences
among the different PDU types (AC Wye, AC Delta, and DC), they are installed in the same manner.
Figure 2-9 shows a fixed configuration AC Wye PDU.
Figure 2-9 Fixed Configuration AC Wye PDU
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