Cisco XR 12410 - Manual (Page 19)

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Cisco XR 12410 and Cisco XR 12810 Router Installation Guide
OL-17441-01
Chapter 1 Product Overview
Physical and Functional Description of Router
AC and DC Power Subsystems
A router ships as either an AC or DC powered system. Source power connects to
power distribution units (PDUs) on the back of the chassis which route power to
the power supplies, also referred to as power entry modules (PEMs).
Caution To ensure that the chassis configuration complies with the required power
budgets, use the on-line power calculator. Failure to properly verify the
configuration may result in an unpredictable state if one of the power units fails.
Contact your local sales representative for assistance.
AC Power Entry Modules
An AC powered router consists of two AC PDUs and AC PEMs. AC power to the
router is provided through power cords connected from AC power outlets to the
PDUs on the chassis rear panel as shown in
Figure 1-3 .
Figure 1-3 AC PDU Connection
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