Chapter 2 Installing and Removing Power Components
Power Component Information Common to Two Types of Power System
Figure 2-2 Ground Cables Attached to Chassis Grounding Points
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1NEBS bonding and grounding points (inside chassis)
2NEBS bonding and grounding points (outside chassis)
DC Power Systems
Each DC powered chassis contains two fixed configuration PDUs or two modular configuration power shelves for 2N redundancy.
•In the fixed configuration power system, each PDU accepts one DC PEM for 2N redundancy. The PDUs and PEMs are field replaceable. The PDUs contain the input power connectors.
•In the modular configuration power system, each power shelf accepts up to four DC PMs. The power shelves and DC PMs are field replaceable. The power shelves contain the input power connectors.
Note Depending on the hardware deployed at your site, your system may not consume the maximum power supplied by the power system.
Fixed Configuration DC Power
The Cisco CRS
•Each DC PEM has its own circuit breaker.
•The fixed configuration power system distributes power in power zones.
•The DC PDUs and DC PEMs are field replaceable.
Cisco CRS Carrier Routing System
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