DC Power Systems
The Cisco CRS Series Enhanced 16-slot Line Card Chassis DC power system can provide up to 16,800 watts
to power the chassis. However, by default, the power capability of a system when shipped, with six DC PMs
per power shelf, is 12,600 watts.
Depending on the hardware deployed at your site, your system may not consume the maximum power
supplied by the power system.
Note
Each DC powered chassis contains two DC power shelves for 2N redundancy. The shelves contain the input
power connectors. Each shelf can accept up to eight DC PMs. The power shelves and DC PMs are field
replaceable.
Figure 3: DC Power Shelf Cable Wiring for Power Shelf , on page 6 shows the cable wiring for the power
shelf.
Figure 3: DC Power Shelf Cable Wiring for Power Shelf
Each power shelf operates with up to eight DC inputs of –48/–60 VDC (nominal), 60A. The power shelf
accepts input DC power in the range –40 to –72 VDC.
Table 1: DC Input Current and Voltage Information, on page 7 lists the DC input current and voltage
specifications.
Cisco CRS Routers 16-Slot Line Card Chassis Enhanced Router Installation Guide
6
Installing Power Components
DC Power Systems
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