A-7
Catalyst 4948E and Catalyst 4948E-F Switch Installation Guide
OL-21561-02
Appendix A Power Supply Specifications
300 W AC-Input Power Supply (PWR-C49E-300AC-F)
Power supply LEDs
INPUT OK • Green—The INPUT OK LED is lit green when the power
supply has detected that the source AC voltage is within limits.
The input voltage is ≥ 82 VAC ±3 VA C .
• Red—The INPUT OK LED is red when either of the following
two situations occurs:
–
In chassis that are equipped with dual power supplies, and
both are powered on, either INPUT OK LED is lit red if its
source AC voltage falls below 73 VAC (±3 VAC ) .
–
In chassis that are equipped with dual power supplies and
one power supply is powered on and the other power supply
is powered off, the INPUT OK LED is lit red, rather than
unlit, on the power supply that is turned off.
• Off—In chassis that are equipped with a single power supply,
the INPUT OK LED is off when source AC voltage falls below
73 VAC (±3 VAC), is not present with the power on/off switch
turned on, or the power supply is turned off.
OUTPUT OK • Green—The 12 VDC output is within margins
(11.30 VDC < output voltage < 12.85 VDC).
• Red—The OUTPUT OK LED is red when any of the following
three situations occurs:
–
In chassis that are equipped with a single power supply, the
12 VDC output is out of tolerance (< 11.30 VDC or
> 12.85 VDC).
–
In chassis that are equipped with dual power supplies and
one power supply is powered on and the other power supply
is powered off, the OUTPUT OK LED is lit red, rather than
unlit, on the power supply that is turned off.
–
The OUTPUT OK LED is also lit red when a power supply
fan failure is detected. A fan failure is triggered when the
fan rotation drops below 7047 RPM ± 150 RPM.
• Off—In chassis that are equipped with a single power supply,
the OUTPUT OK LED is off when the power supply is turned
off.
Weight 2 lb (0.9 kg)
1. The kVA rating listed for the power supply should be used as the sizing criteria for both UPS outputs as well as standard
circuits and transformers to power a switch.
Table A-3 300 W AC-Input Power Supply (PWR-C49E-300AC-F) Specifications (continued)
Item Specification