Catalyst 4948E and Catalyst 4948E-F Switch Installation Guide

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Catalyst 4948E and Catalyst 4948E-F Switch Installation Guide

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Power Supply Specifications

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Updated:: February 15, 2018

Chapter: Power Supply Specifications

300 W AC-Input Power Supply (PWR-C49E-300AC-R)
300 W AC-Input Power Supply (PWR-C49E-300AC-F)
300 W AC-Input Power Supply Power Cords
300 W DC-Input Power Supply (PWR-C49-300DC)

Power Supply Specifications

This appendix provides the specifications for the AC-input and DC-input power supplies supported on the Catalyst 4948E switch.

Tip For additional information about the Cisco Catalyst 4948E and the Catalyst 4948E-F switches (including configuration examples and troubleshooting information), see the documents listed on this page:

http://www.cisco.com/en/US/products/ps6021/tsd_products_support_series_home.html

300 W AC-Input Power Supply (PWR-C49E-300AC-R)

The PWR-C49E-300AC-R 300 W AC-input power supply can be installed only in the Catalyst 4948E switch chassis. This power supply is not supported on the Catalyst 4948E-F switch. Figure A-1 shows the 300 W AC-input power supply with the major features identified.

Figure A-1 AC-Input Power Supply (PWR-C49E-300AC-R) Features


1	AC power switch	4	Power supply LEDs
2	Captive installation screw	5	Power supply handle
3	AC power cord receptacle

Table A-1 lists the specifications for the 300 W AC-input power supply (PWR-C49E-300AC-R).

Table A-1 300 W AC-Input Power Supply 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 rating¹	0.375 kVA
Power supply fan	•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.
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 4150 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)

¹The 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-2 PWR-C49E-300AC-R Power Supply Inlet Temperature Versus Fan Speed
Fan Speed Level	Inlet Temperature (T) (± 2°C)	Fan Speed (RPM) (±100RPM)
L1	-5°C < T £ 35°C	8900
L2	35°C < T £ 42°C	9800
L3	42°C < T £ 50°C)	11100
L4	T > 50°C	12700

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

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. Figure A-2 shows the 300 W AC-input power supply with the major features identified.

Figure A-2 AC-Input Power Supply (PWR-C49E-300AC-F) Features


1	AC power switch	4	Power supply LEDs
2	Captive installation screw	5	Power supply handle
3	AC power cord receptacle

Table A-1 lists the specifications for the 300 W AC-input power supply (PWR-C49E-300AC-F).

Table A-3 300 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 rating¹	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)

¹The 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-4 PWR-C49E-300AC-F Power Supply Inlet Temperature Versus Fan Speed
Fan Speed Level	Inlet Temperature (T) (± 2°C)	Fan Speed (RPM) (±100RPM)
L1	-3°C < T £ 37°C	8700
L2	37°C < T £ 44°C	10700
L3	44°C < T £ 52°C	12700
L4	T > 52°C	14700

300 W AC-Input Power Supply Power Cords

Table A-5 lists the specifications for the AC power cords that are available for both of the 300 W AC-input power supplies. The table includes references to illustrations of the AC power cords.

Note All 300 W AC-input power supply power cords have an IEC60320/C15 appliance plug at one end. This plug connects to the AC-in receptacle on the power supply faceplate.

Table A-5 300 W AC-Input Power Supply Power Cords
Locale	Power Cord Part Number	AC Source Plug Type	Cordset Rating	Power Cord Reference Illustration
Argentina	CAB-IR2073-C15-AR= (was CAB-7KACR=)	IRAM 2073	10 A, 250 VAC	Figure A-3
Australia, New Zealand	CAB-AS3112-C15-AU= (was CAB-7KACA=)	SAA AS 3112	10 A, 250 VAC	Figure A-4
Continental Europe	CAB-CEE77-C15-EU= (was CAB-7KACE=)	CEE 7/7	10 A, 250 VAC	Figure A-5
Italy	CAB-C2316-C15-IT= (was CAB-7KACI=)	CEI 23-16/7	10 A, 250 VAC	Figure A-6
North America, Japan	CAB-US515-C15-US= (was CAB-7KAC=)	NEMA 5-15¹	13 A, 125 VAC	Figure A-7
North America	CAB-N5K6A-NA=	NEMA 6-15P	10 A, 250 VAC	Figure A-8
South Africa, India	CAB-SABS-C15-IND=	BS 546 (SABS 164-1)	10 A, 250 VAC	Figure A-9
Switzerland	CAB-9K10A-SW= (was CAB-7KACSW=)	SEV 1011	10 A, 250 VAC	Figure A-10
United Kingdom	CAB-BS1363-C15-UK= (was CAB-7KACU=)	BS 1363²	13 A, 250 VAC	Figure A-11

¹For Japan, ask your local electrical contractor to prepare the NEMA 5-20 power plug.

²Plug contains a 13 A fuse.

Figure A-3 CAB-IR2073-C15-AR=, CAB-7KACR= (Argentina)

Figure A-4 CAB-AS3112-C15-AU=, CAB-7KACA= (Australia and New Zealand)

Figure A-5 CAB-CEE77-C15-EU=, CAB-7KACE= (Continental Europe)

Figure A-6 CAB-C2316-C15-IT=, CAB-7KACI= (Italy)

Figure A-7 CAB-US515-C15-US=, CAB-7KAC= (North America)

Figure A-8 CAB-N5K6A-NA (North America)

Figure A-9 CAB-SABS-C15-IND (South Africa, India)

Figure A-10 CAB-9K10A-SW=, CAB-7KACSW= (Switzerland)

Figure A-11 CAB-BS1363-C15-UK=, CAB-7KACU= (United Kingdom)

300 W DC-Input Power Supply (PWR-C49-300DC)

Figure A-12 shows the 300 W DC-input power supply with the major features identified. The PWR-C49-300DC DC-input power supply is supported only on the Catalyst 4948E switch chassis.

Figure A-12 300 W DC-Input Power Supply (PWR-C49-300DC)


1	Source DC terminal block	3	Power supply LEDs
2	Captive installation screw	4	Power supply handle

Table A-6 lists the specifications for the 300 W DC-input power supply (PWR-C49-300DC).

Table A-6 300 W DC-Input Power Supply Specifications
Item	Specification
DC-input voltage	•-48 VDC @ 8.33 A for nominal -48 V battery backup system (operating range: -40.5 VDC to -56 VDC) •-60 VDC @ 6.66 A for nominal -60 V battery backup system (operating range: -55 VDC to -72 VDC)
DC-input current	Nominal range is 6.66 A to 8.33 A
Power supply output capacity	300 W
Power supply output	25 A @ 12 VDC
Output holdup time	8 ms (minimum)
Heat dissipation	341 BTU/hour (power supply only)
Power supply LEDs
INPUT OK	•Green—The INPUT OK LED is lit green when the power supply has detected that the source DC voltage is within limits. The input voltage is Š -38.25 VDC ±2.25 VDC. •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 power supplies are powered on, the INPUT OK LED is lit red if its source DC voltage falls below 33 VDC (±3 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 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 DC voltage falls below 33 VDC (±3 VDC), 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 (less than 11.30 VDC or more than 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 powered 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 4150 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.
Power supply fan	•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 inlet air temperature. See Table A-7 for inlet temperature ranges and corresponding fan speeds.
Weight	2 lb (0.9 kg)

Table A-7 DC-Input Power Supply Inlet Temperature Versus Fan Speed
Fan Speed Level	Inlet Temperature (T) (± 2°C)	Fan Speed (RPM) (±100RPM)
L1	-10°C < T £ 30°C	5100
L2	30°C < T £ 37°C	6400
L3	37°C < T £ 45°C	7700
L4	T > 45°C	9500

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