A-40
Catalyst 6500 Series Switches Installation Guide
OL-5781-04
Appendix A Power Supply Specifications
4000 W AC-Input and DC-Input Power Supplies
Branch circuit requirement (AC-input) Each chassis power supply should have its own
dedicated, fused-branch circuit:
• For North America—30 A
• For International—Circuits should be sized
according to local and national codes
• All AC power supply inputs are fully isolated.
–
Source AC can be out of phase between
multiple power supplies in the same chassis,
which means that PS1 can be operating from
phase A and PS2 can be operating from
phase B.
–
Source AC can be out of phase between AC
inputs on power supplies that are equipped
with multiple AC inputs, which means that
power cord 1 can be plugged into phase A and
power cord 2 can be plugged into phase B.
DC-input voltage
• –48 VDC nominal @ 37 A in North America
(operating range: –40.5 VDC to –56 VDC)
• –60 VDC nominal @ 29 A for International
(operating range: –55 VDC to –72 VDC)
Note The 4000 W DC-input power supply requires
two source DC-inputs to be connected; it
cannot operate with only one positive
(+)/negative (-) source DC terminal pair
installed.
DC-input current 40 A per each DC input (three inputs)
Power supply output capacity
• 4000 W with three inputs active
• 2700 W with two inputs active
Note The 4000 W power supply cannot operate with
only one source DC-input connected.
kVA rating 5.4 kVA maximum
System power dissipation (DC power supply) 5200 W (total input power)
Table A-17 4000 W AC-Input and DC-Input Power Supplies Specifications (continued)
Specification Description
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