Manual

2-13
Cisco XR 12404 Router Installation Guide
OL-13830-02
Chapter 2 Preparing for Installation
Installation Site Requirements
Power Connection Guidelines
The Cisco XR 12404 Router requires an AC PEM or a combination DC PDU and
DC PEM. Site requirements differ depending on the type of power source voltage.
W
e recommend you follow these precautions and recommendations when
planning power source connections to your router.
• Check the power at your site before installation and periodically after
installation to ensure that you are receiving clean power from the power
source.
• If necessary, install a power conditioner.
• Install proper grounding, or use the proper grounding receptacle located on
the side of the chassis, to avoid damage from lightning and power surges.
AC-Powered Routers
A Cisco XR 12404 Router configured with two AC PEMs, are shipped with a
three-wire electrical grounding-type plug that will only fit into a grounding-type
power outlet. This is a safety feature. The equipment grounding should be in
accordance with local and national electrical codes.
At sites where the Cisco XR 12404 R
outer operates with AC PEMs, observe the
following guidelines (Figure 2-3):
• A power factor corrector (PFC) allows the PEM to accept AC power source
voltage from an AC power source operating between 100 to 120 VAC ,
1
5–Amp service in North America; and a range of 185 to 264 VAC, 10–Amp
service, in an international environment.
• All AC PEM power cords measure 14 feet (4.3 meters).
• Provide a dedicated power source for each PEM installed in the router.
• Install an uninterruptable power source where possible.
Caution Use the North American plug L6-20 20A only on 240 volt systems.
todd.book Page 13 Monday, March 16, 2009 2:47 PM