Cisco CRS-1 - Manual (Page 32)

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Cisco CRS Carrier Routing System 8-Slot Line Card Chassis Site Planning Guide
OL-5802-09
Chapter 2 Power and Cooling
AC Power Systems
Two versions of the AC PDU are available to accommodate AC input power in either the Delta or Wye
configuration. Each PDU has a different Cisco part number, and ships with an AC power cord that is
14 feet (4.3 m) long.
In addition to the requirements in the “General Power and Grounding Requirements” section on page 2-2 ,
AC input power requirements are as follows:
• An AC-powered chassis (Wye or Delta) requires up to a maximum of 8,500 watts of AC input power
when the chassis is fully loaded.
• Two separate and independent AC power sources are required, one for each PDU. Each PDU should
be connected to a different power source to provide 2N power redundancy in case a power source
fails.
• Each AC power source must provide 3-phase AC power, and have its own circuit breaker.
• AC Delta input:
– 3-phase, 200 to 240 VAC (phase-to-phase), 50 to 60 Hz.
– Input current: 30 A. The PDU is rated for 24-amp service, and accepts AC input of 30 A.
– Delta power cord has a 4-pin NEMA L15-30P plug (3 wire + protective earthing [3W+PE]).
The power cord is rated for 250 VAC, 30 A, and plugs into a similarly rated NEMA L15-30R
locking-type receptacle.
• AC Wye input:
– 3-phase, 200 to 240 VAC (phase-to-neutral), 50 to 60 Hz.
– Input current: 16 A (International) or 20 A (North America). The PDU is rated for 14-amp service,
and accepts AC input of 16 A (International) or 20 A (North America).
– Wye power cord has a 5-pin IEC 60309 plug (3 wire + neutral + protective earthing conductor
(ground wire) [3W+N+PE]). The cord is rated for 400 VAC, 16 or 20 A, and plugs into a
similarly rated IEC 60309 receptacle.
• Grounding-type AC power outlet is required. The PDUs are shipped with AC power cords that have
a grounding-type plug. As a safety feature, the plugs fit only a grounding-type AC power outlet.
Figure 2-8 and Figure 2-9 show the plugs for the AC Delta and Wye power cords.
Figure 2-8 AC Delta Power Cord Plug
254929