Cisco ASR 9001 Hardware Installation Guide

DC power modules contain reverse voltage protection circuitry to prevent damage to the power module
if it detects a reverse polarity condition. No damage should occur from reverse polarity, but you should
correct a reverse polarity condition immediately.
Caution
For a list of the nominal and acceptable value ranges for source DC power, see Power System DC Output
Levels, on page 123.
NEBS Supplemental Unit Bonding and Grounding Guidelines
You must permanently connect the central office ground system or interior equipment grounding system to
the supplemental bonding and grounding connection on the side of the router chassis to meet network equipment
building system (NEBS) requirements as well as safety compliance requirements. These grounding points are
referred to as the NEBS bonding and grounding points.
The following figure shows the NEBS grounding locations for the Cisco ASR 9001 Router.
These bonding and grounding connections satisfy the Telcordia NEBS requirements for supplemental
bonding and grounding connections. For an AC powered router, if you are not installing the router in a
NEBS environment, you can choose to bypass these guidelines and rely on the safety earth ground
connections to the AC power modules.
Note
Figure 22: NEBS Bonding and Grounding Points on the Cisco ASR 9001 Router
NEBS grounding point on side of chassis1
Cisco ASR 9001 and Cisco ASR 9001-S Routers Hardware Installation Guide
22
Preparing for Installation
NEBS Supplemental Unit Bonding and Grounding Guidelines

Cisco ASR 9001 Specifications

General

Router Series	ASR 9000 Series
Rack Units	2 RU
Operating System	Cisco IOS XR
Form Factor	Rack-mountable
Power Supply	AC or DC
Memory	8 GB
Forwarding Capacity	Up to 80 Gbps
Switching Capacity	160 Gbps
Operating Temperature	0 to 40°C
Weight	24 lb
Redundancy	Power supply