Carrier 50EW, 50EJ, 50EY, 50EK installation instructions 225/225

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

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		180.5/177.7	225/225
														23.6	41.6	Ð	Ð		204.1/201.3		250/250
											10		30.8/	Ð	Ð	29/36	75.1/ 86.6		180.5/177.7		225/225
													28.0	23.6	41.6	29/36	75.1/	86.6	204.1/201.3		250/250
														Ð	Ð	59/72	150.1/173.2		188.6/208.2		225/225
														23.6	41.6	59/72	150.1/173.2		218.1/237.7		250/250
														Ð	Ð	Ð	Ð		195.9/191.7	250/225
														23.6	41.6	Ð	Ð		219.5/215.3		275/250
	208/230	187	254	57.1	266	57.1	266	4	1	5.3	15		46.2/	Ð	Ð	29/36	75.1/ 86.6		195.9/191.7		250/225
													42.0	23.6	41.6	29/36	75.1/	86.6	219.5/215.3		275/250
														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		209.1/203.7	250/250
														23.6	41.6	Ð	Ð		232.7/227.3		275/275
											20		59.4/	Ð	Ð	29/36	75.1/ 86.6		209.1/203.7		250/250
													54.0	23.6	41.6	29/36	75.1/	86.6	232.7/227.3		275/275
														Ð	Ð	59/72	150.1/173.2		224.4/240.7		275/275
														23.6	41.6	59/72	150.1/173.2		253.9/270.2		300/300
														Ð	Ð	Ð	Ð		82.4		100
														12.6	23.6	Ð	Ð		95.0		110
											10		14	Ð	Ð	36	43.3		82.4		100
														12.6	23.6	36	43.3		95.0		110
														Ð	Ð	72	86.6		104.1		110
														12.6	23.6	72	86.6		119.9		125
														Ð	Ð	Ð	Ð		89.4		110
														12.6	23.6	Ð	Ð		102.0		125
038	460	414	508	25.6	120	25.6	120	4	1	2.7	15		21	Ð	Ð	36	43.3		89.4		110
														12.6	23.6	36	43.3		102.0		125
														Ð	Ð	72	86.6		112.9		125
														12.6	23.6	72	86.6		128.6		150
														Ð	Ð	Ð	Ð		95.4		110
														12.6	23.6	Ð	Ð		108.0		125
											20		27	Ð	Ð	36	43.3		95.4		110
														12.6	23.6	36	43.3		108.0		125
														Ð	Ð	72	86.6		120.4		125
														12.6	23.6	72	86.6		136.1		150
														Ð	Ð	Ð	Ð		66.7		80
														12.6	23.6	Ð	Ð		79.3		90
											10		11	Ð	Ð	36	34.6		66.7		80
														12.6	23.6	36	34.6		79.3		90
														Ð	Ð	72	69.3		83.0		90
														12.6	23.6	72	69.3		98.8		100
														Ð	Ð	Ð	Ð		72.7		90
														12.6	23.6	Ð	Ð		85.3		100
	575	518	632	20.5	96	20.5	96	4	1	2.4	15		17	Ð	Ð	36	34.6		72.7		80
														12.6	23.6	36	34.6		85.3		100
														Ð	Ð	72	69.3		90.5		100
														12.6	23.6	72	69.3		106.3		110
														Ð	Ð	Ð	Ð		77.7		90
														12.6	23.6	Ð	Ð		90.3		110
											20		22	Ð	Ð	36	34.6		77.7		90
														12.6	23.6	36	34.6		90.3		110
														Ð	Ð	72	69.3		96.8		110
														12.6	23.6	72	69.3		112.5		125

		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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