Carrier 50EW, 50EY, 50EK Electrical Data Ð 50EJ,EK,EW,EY024-048, FLA LRA MCA MOCP²

Table 4 Ð Electrical Data Ð 50EJ,EK,EW,EY024-048

UNIT	NOMINAL	VOLTAGE			COMPRESSOR				OFM			IFM		POWER		ELECTRIC			POWER SUPPLY
	VOLTAGE	RANGE		No. 1		No. 2								EXHAUST			HEAT*
SIZE	(3 Ph 60 Hz)
		Min	Max	RLA	LRA	RLA	LRA	Qty	Hp	FLA (ea)	Hp		FLA	FLA	LRA	kW	FLA		MCA			MOCP²
														Ð	Ð	Ð	Ð		101.8/100.3	125/125
														23.6	41.6	Ð	Ð		125.4/123.9		150/150
											5		16.7/	Ð	Ð	29/36	75.1/ 86.6		114.7/127.3		125/150
													15.2	23.6	41.6	29/36	75.1/	86.6	144.2/156.8		150/175
														Ð	Ð	59/72	150.1/173.2		171.0/192.2		200/225
														23.6	41.6	59/72	150.1/173.2		200.5/221.7		225/225
														Ð	Ð	Ð	Ð		115.9/113.1	150/150
														23.6	41.6	Ð	Ð		139.5/136.7		175/175
	208/230	187	254	39.1	228	25.6	160	2	1	5.3	10		30.8/	Ð	Ð	29/36	75.1/ 86.6		132.3/143.3		150/150
													28.0	23.6	41.6	29/36	75.1/	86.6	161.8/172.8		175/175
														Ð	Ð	59/72	150.1/173.2		188.6/208.2		220/225
														23.6	41.6	59/72	150.1/173.2		218.1/237.7		250/250
														Ð	Ð	Ð	Ð		131.3/127.1	150/150
														23.6	41.6	Ð	Ð		154.9/150.7		175/175
											15		46.2/	Ð	Ð	29/36	75.1/ 86.6		151.6/160.8		175/175
													42.0	23.6	41.6	29/36	75.1/	86.6	181.1/190.3		200/200
														Ð	Ð	59/72	150.1/173.2		207.9/225.7		250/250
														23.6	41.6	59/72	150.1/173.2		237.4/255.2		275/275
														Ð	Ð	Ð	Ð		49.4		60
														12.6	23.6	Ð	Ð		62.0		80
											5		7.6	Ð	Ð	36	43.3		63.6		70
														12.6	23.6	36	43.3		79.4		80
														Ð	Ð	72	86.6		96.1		110
														12.6	23.6	72	86.6		111.9		125
														Ð	Ð	Ð	Ð		55.8		70
														12.6	23.6	Ð	Ð		68.4		80
024	460	414	508	19.9	114	11.5	80	2	1	2.7	10		14	Ð	Ð	36	43.3		71.6		80
														12.6	23.6	36	43.3		87.4		90
														Ð	Ð	72	86.6		104.1		110
														12.6	23.6	72	86.6		119.9		125
														Ð	Ð	Ð	Ð		62.8		80
														12.6	23.6	Ð	Ð		75.4		90
											15		21	Ð	Ð	36	43.3		80.4		90
														12.6	23.6	36	43.3		96.1		100
														Ð	Ð	72	86.6		112.9		125
														12.6	23.6	72	86.6		128.6		150
														Ð	Ð	Ð	Ð		40.5		50
														12.6	23.6	Ð	Ð		53.1		60
											5		6.1	Ð	Ð	36	34.6		50.9		60
														12.6	23.6	36	34.6		66.7		70
														Ð	Ð	72	69.3		76.9		80
														12.6	23.6	72	69.3		92.7		100
														Ð	Ð	Ð	Ð		45.4		60
														12.6	23.6	Ð	Ð		58.0		70
	575	518	632	16.0	91	9.6	64	2	1	2.4	10		11	Ð	Ð	36	34.6		57.1		60
														12.6	23.6	36	34.6		72.8		80
														Ð	Ð	72	69.3		83.0		90
														12.6	23.6	72	69.3		98.8		100
														Ð	Ð	Ð	Ð		51.4		60
														12.6	23.6	Ð	Ð		64.0		80
											15		17	Ð	Ð	36	34.6		64.6		70
														12.6	23.6	36	34.6		80.3		90
														Ð	Ð	72	69.3		90.5		100
														12.6	23.6	72	69.3		106.3		110

		LEGEND
FLA	Ð	Full Load Amps
HACR	Ð Heating, Air Conditioning and Refrigeration
IFM	Ð Indoor (Evaporator) Fan Motor
LRA	Ð	Locked Rotor Amps
MCA	Ð	Minimum Circuit Amps
MOCP	Ð	Maximum Overcurrent Protection

Determine maximum deviation from average voltage.

(AB) 457 − 452 = 5 v (BC) 464 − 457 = 7 v

(AC) 457 − 455 = 2 v

Maximum deviation is 7 v.

Determine percent of voltage imbalance.

NEC	Ð	National Electrical Code
OFM	Ð	Outdoor (Condenser) Fan Motor

% Voltage Imbalance = 100 x

7

RLA Ð Rated Load Amps

*Heater capacity (kW) is based on heater voltage of 208 v, 240 v, 480 v, and 575 v. If power distribution voltage to unit varies from rated heater voltage, heater kW will vary accordingly.

²Fuse or HACR circuit breaker.

NOTES:

1.In compliance with NEC requirements for multimotor and combination load equip- ment (refer to NEC Articles 430 and 440), the overcurrent protective device for the unit shall be fuse or HACR breaker. The Canadian units may be fuse or circuit breaker.

2.Unbalanced 3-Phase Supply Voltage

Never operate a motor where a phase imbalance in supply voltage is greater than 2%. Use the following formula to determine the percent of voltage imbalance.

max voltage deviation from average voltage

% Voltage Imbalance = 100 x
		average voltage
EXAMPLE: Supply voltage is 460-3-60.
AB = 452 v
BC = 464 v
AC = 455 v	452 + 464 + 455
Average Voltage =
	3
=	1371
	3
= 457

457

= 1.53%

This amount of phase imbalance is satisfactory as it is below the maximum allowable 2%.

IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact your local electric utility company immediately.

3.MCA calculation for units with electric heaters over 50 kW = (1.25 x IFM amps) + (1.00 x heater FLA).

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