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Cisco ME 6500 Series Ethernet Switch Installation Guide
OL-8900-03
Appendix A Power Supply Specifications
400 W DC-Input Power Supply
Table A-1 lists the specifications for the 400 W DC-input power supply (PWR-400W-DC).
Table A-1 400 W DC-Input Power Supply Specifications
Item Specification
DC-input voltage • –48 VDC @ 37 A for nominal –48 V battery
backup system (operating range: –40.5
VDC to
–56
VDC)
• –60 VDC @ 29 A for nominal –60 V battery
backup system (operating range: –55
VDC to
–72
VDC)
DC-input current • 11 A @ -48 VDC
• 9 A @ -60 VDC
Power supply output capacity 400 W maximum
Power supply output 34 A @ +11.75 V
Output holdup time 4 ms
Heat dissipation 133.33 W per hour (454.92 BTU per hour)
Front panel LEDs
• INPUT OK • Green—The source DC voltage is OK.
(-38.25
VDC or greater.)
• Off—The source DC voltage has dropped below
-33
VDC or is not present.
Note In dual power supply configurations with the
alternate power supply powered up, the INPUT
OK LED may be lit red to indicate that the DC
input voltage is less than -33
VDC or that the
power supply is switched off.
• FAN OK • Green—The power supply fan is operating
properly.
• Red—A power supply fan failure is detected.
• OUTPUT OK • Red—A problem with the DC-output voltage from
the power supply is detected.
• Green—The DC-output voltage is within
acceptable margins.
Weight 4.41 lb (2.0 kg)