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CISCO
PSU/ Catalyst 4948E 300WAC

CISCO PSU/ Catalyst 4948E 300WAC (PWR-C49E-300AC-F=)

Artikelnr: PWR-C49E-300AC-F=
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PWR-C49E-300AC-F

300 W AC-Input Power Supply

The PWR-C49E-300AC-F 300 W AC-input power supply can be installed only in the Catalyst 4948E-F switch chassis. This power supply is not supported on the Catalyst 4948E switch.

300 W AC-Input Power Supply (PWR-C49E-300AC-F) Specifications 

Item
Specification

AC-input type

•Autoranging input with power factor correction (PFC).

•Power factor correction is a standard feature. PFC reduces the reactive component in the source AC current allowing higher power factors and lower harmonic current components.

AC-input voltage

•Low-line (120 VAC nominal)—85 VAC (min) to 132 VAC (max)

•High-line (230 VAC nominal)—170 VAC (min) to 264 VAC (max)

AC-input current

•4 A @ 100 VAC (maximum)

•2 A @ 240 VAC (maximum)

AC-input frequency

47 to 63 Hz

Branch circuit requirements

Each chassis power supply should have its own dedicated, fused-branch circuit:

•For North America—15 A

•For International—Circuits sized 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 line conductor wired to a source AC phase and the neutral conductor wired either to neutral or to another source AC phase as long as the net input voltage is in the range of 170 to 264 VAC.

Power supply output

25 A @+12 VDC

Output holdup time

20 ms minimum

kVA rating 1

0.4 kVA

Power supply fan

•One temperature-controlled, variable-speed fan

•Airflow direction—Front to back

•The power supply fan has four speed settings. The speed settings are dependent on the air temperature detected by the inlet air temperature sensor mounted in the chassis. See Table A-4 for inlet temperature ranges and corresponding fan speeds.

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 Š 82 VAC ±3 VAC.

•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.

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