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Cisco ASR 903 Hardware Installation Guide

Cisco ASR 903
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The plug-socket combination must be accessible at all times because it serves as the main disconnecting
device. Statement 1019
Warning
This product requires short-circuit (overcurrent) protection, to be provided as part of the building installation.
Install only in accordance with national and local wiring regulations. Statement 1045
Warning
Guidelines for DC-Powered Systems
Basic guidelines for DC-powered systems include the following:
Each chassis power supply should have its own dedicated input power source. The source must comply
with the safety extra-low voltage (SELV) requirements in the UL 60950, CSA 60950, EN 60950, and
IEC 60950 standards.
The circuit must be protected by a dedicated two-pole circuit breaker. The circuit breaker should be
sized according to the power supply input rating and local or national code requirements.
The circuit breaker is considered the disconnect device and should be easily accessible.
The system ground is the power supply and chassis ground.
Do not connect the DC return wire to the system frame or to the system grounding equipment.
Use the grounding lug to attach a wrist strap for ESD protection during servicing.
Guidelines for AC-Powered Systems
Basic guidelines for AC-powered systems include the following:
Each chassis power supply should have its own dedicated branch circuit.
The circuit breaker should be sized according to the power supply input rating and local or national code
requirements.
The AC power receptacles used to plug in the chassis must be the grounding type. The grounding
conductors that connect to the receptacles should connect to protective earth ground at the service
equipment.
Installing the DC Power Supply
This equipment is suitable for installation in Network Telecommunications Facilities and locations where
the NEC applies.
Note
This equipment is suitable for installations utilizing the Common Bonding Network (CBN).Note
Cisco ASR 903 Aggregation Services Router Hardware Installation Guide
103
Installing the Cisco ASR 903 Router
Installing the DC Power Supply

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Cisco ASR 903 Specifications

General IconGeneral
BrandCisco
ModelASR 903
CategoryNetwork Router
LanguageEnglish

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