Cisco CRS-1 System Description page 37

Cisco CRS 8-Slot Line Card Chassis Enhanced Router Power Systems
Individual chassis components have power-related devices, such as OR-ing diodes, inrush control circuits,
and EMI filters. Because any power modules can power all chassis components, these devices can be inserted
or removed (OIR) while the chassis is online. This component insertion and removal is also called hot-swapping
.
The modular configuration AC power shelf has the following input VAC power requirements:
• Single-phase, 200 to 240 VAC nominal, 50 to 60 Hz, 16 A
• Each power shelf contains three IEC-320-C22 receptacles which can accept up to three IEC-320-C21
Note In order to maintain a balanced 3-phase power load, three AC PMs are required to be installed in a Cisco CRS
8-slot Line Card Chassis Enhanced router AC modular configuration power shelf.
For additional power details, see
Modular Configuration AC Power Shelf
The AC power shelf is the enclosure that houses the AC power modules and power distribution connections
and wiring. The AC power shelf, shown in the following figure, is installed in the Cisco CRS 8-slot Line Card
Chassis Enhanced router from the front and plugs into the chassis power interface connector panel.
Figure 15: Modular Configuration AC Power Shelf
Note The power cables for the power shelves do not come pre-attached.
connector female plugs, depending on how many AC PMs are installed in the shelf.
Cisco CRS Carrier Routing System 8-Slot Line Card Chassis Enhanced Router System Description
Appendix A, "Technical Specifications."
Modular Configuration AC Power Shelf
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