Fixed Configuration Ac Power; Modular Configuration Ac Power - Cisco SRS Series Installation Manual

Fixed Configuration AC Power

Fixed Configuration AC Power
The LCC fixed configuration AC power system provides 13,200 watts to power the chassis.Two versions of
the 3-phase AC power shelf are available to provide either an AC Delta or an AC Wye input configuration.
Each of the AC power shelf versions has a different Cisco part number to distinguish the Wye from the Delta
configuration. The AC connections to the LCC are made to terminal blocks on the AC power shelves that
have been hard wired for a Wye or Delta configuration. All chassis should have two power shelves of the
same type, that is, two Delta or two Wye AC power shelves.
In the fixed configuration power system, each shelf supports three AC-to-DC rectifiers that are field replaceable.
The AC-to-DC rectifiers convert 200-to-240 VAC power to –54 VDC used by the LCC.
The AC Wye power shelf has a Wye 3-phase, 5-wire connection: 200 to 240 (L-N)/346 to 415 (L-L) VAC,
3W+N+PE, 50 to 60 Hz, 25 A. For redundant operation, two 3-phase Wye branch circuits are required: 40 A
(North America) or 32 A (International). One power connection is required for each power shelf.
The AC Delta power shelf has a Delta 3-phase, 4-wire connection: 200 to 240 VAC, 3-phase, 3W+PE, 50 to
60 Hz, 42 A. For redundant operation, two 3-phase Delta 60-A branch circuits are required. One power
connection is required for each power shelf.
Note
The power cord for the fixed configuration AC power shelf does not arrive preattached and needs to be
installed.

Modular Configuration AC Power

The LCC modular configuration AC power system can provide up to 18,000 watts to power the chassis.
However, by default, the power capability of a system when shipped, with 5 AC PMs per power shelf, is
15,000 watts.
Each modular configuration power shelf supports up to six PMs. The power shelves and PMs are field
replaceable.
Note
Depending on the hardware deployed at your site, your system may not consume the maximum power supplied
by the power system.
Unlike the fixed configuration AC power system, which requires 3-phase AC Delta or AC Wye input power,
the modular configuration AC power system requires single-phase AC input power. If you have 3-phase AC
Delta or AC Wye at your equipment, a Cisco CRS PDU will be required to convert 3-phase AC input power
to single-phase AC input power for the power shelf. For more information, see the
Power Distribution Unit Installation Guide
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 six IEC-320-C22 receptacles which can accept up to six IEC-320-C21 connector
female cords.
Cisco CRS Routers 16-Slot Line Card Chassis Installation Guide
28
Installing and Removing Power Components
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Cisco CRS 3-Phase AC