Installing The Dc Power Supply - Cisco ASR 903 Installation Instructions Manual

Installing the Cisco ASR 903 Router as a Satellite Shelf
• The circuit must be protected by a dedicated two-pole circuit breaker. The circuit breaker should be
• 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
• The AC power receptacles used to plug in the chassis must be the grounding type. The grounding

Installing the DC Power Supply

The following sections describe how to install a DC power supply in the Cisco ASR 903 Router as a satellite
shelf:
•
•
•
This equipment is suitable for installation in Network Telecommunications Facilities and locations where
Note
the NEC applies.
This equipment is suitable for installations utilizing the Common Bonding Network (CBN).
Note
Note The grounding architecture of this product is DC-Isolated (DC-I) for DC-powered products. DC-powered
products have a nominal operating DC voltage of 48 VDC.
sized according to the power supply input rating and local or national code requirements.
requirements.
conductors that connect to the receptacles should connect to protective earth ground at the service
equipment.
Installing the DC Power Supply Module
Installing the Terminal Block, on page 43
Activating the DC Power Supply, on page 47
Cisco ASR 9000 Series Aggregation Services Router Satellite Systems Installation Guide
Installing the DC Power Supply
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