Datasheet

A-40
Catalyst 6500 Series Switches Installation Guide
OL-5781-05
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.
– For high-line operation, the power supply
operates with the hot conductor wired to a
source AC phase and the neutral conductor
wired either to ground or to another source AC
phase as long as the net input voltage is in the
range of 170 to 264 VAC.
– 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)
Note For multiple DC input power supplies, each
DC input must be protected by a dedicated
circuit breaker or a fuse. The circuit breaker or
the fuse must be sized according to the power
supply input power rating and any local or
national electrical code requirements.
Table A-17 4000 W AC-Input and DC-Input Power Supplies Specifications (continued)
Specification Description