Cisco 4948 - Catalyst Switch Installation Manual page 79
Installation guide
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Also See for 4948 - Catalyst Switch:
- Datasheet (18 pages) ,
- Product bulletin (4 pages) ,
- Datasheet (16 pages)
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Appendix A
Power Supply Specifications
Table A-1
Table A-1
Item
AC-input type
AC-input voltage
AC-input current
AC-input frequency
Branch circuit requirements
Power supply output
Output holdup time
kVA rating
Power supply fan
OL-21561-02
lists the specifications for the 300 W AC-input power supply (PWR-C49E-300AC-R).
300 W AC-Input Power Supply Specifications
Specification
•
•
•
•
•
•
47 to 63 Hz
Each chassis power supply should have its own dedicated,
fused-branch circuit:
•
•
•
25 A @+12 VDC
20 ms minimum
1
0.375 kVA
•
•
•
300 W AC-Input Power Supply (PWR-C49E-300AC-R)
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.
Low-line (120 VAC nominal)—85 VAC (min) to 132 VAC
(max)
High-line (230 VAC nominal)—170 VAC (min) to 264 VAC
(max)
4 A @ 100 VAC (maximum)
2 A @ 240 VAC (maximum)
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.
One temperature-controlled, variable-speed fan
Airflow direction—Back to front
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-2
for inlet temperature ranges and corresponding fan
speeds.
Catalyst 4948E and Catalyst 4948E-F Switch Installation Guide
A-3
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