Carrier 48EK, 48EW, 48EY024-068, 48AW, 48AY020-060, 48AK, 48AJ, 48EJ specifications Unit Size

Table 7 — Electrical Data — 48AJ,AK,AW,AY Units (cont)

UNIT SIZE	NOMINAL	VOLTAGE RANGE		COMPRESSOR				OFM			IFM	POWER	POWER
				No. 1		No. 2						EXHAUST	SUPPLY
48AJ,AK,	VOLTAGE
AW,AY	(3 PH, 60 Hz)	Min	Max	RLA	LRA	RLA	LRA	Qty	FLA	Hp	FLA	FLA	MCA	MOCP*
												(total)
										10	30.8/28.0	—	129.4/126.6	150/150
												23.6/23.6	153.0/150.2	175/175
	208/230	187	253	39.1	256	39.1	256	2	5.3	15	46.2/42.0	—	146.6/141.3	175/175
									(ea)			23.6/23.6	170.2/164.9	200/200
										20	59.4/54.0	—	163.1/156.3	200/200
												23.6/23.6	186.7/179.9	225/225
										10	14	—	64.2	80
												12.6	76.8	90
027	460	414	508	19.9	114	19.9	114	2	2.7	15	21	—	71.5	90
									(ea)			12.6	84.1	100
										20	27	—	79.0	100
												12.6	91.6	110
										10	11	—	51.8	60
												12.6	64.4	80
	575	518	632	16	91	16	91	2	2.4	15	17	—	58.1	70
									(ea)			12.6	70.7	80
										20	22	—	64.3	80
												12.6	76.9	90
										10	30.8/28.0	—	151.9/149.1	200/200
												23.6/23.6	175.5/172.7	225/225
	208/230	187	253	57.1	266	39.1	228	2	5.3	15	46.2/42.0	—	167.3/163.1	200/200
									(ea)			23.6/23.6	190.9/186.7	225/225
										20	59.4/54.0	—	181.1/175.1	225/225
												23.6/23.6	204.7/198.7	250/250
										10	14	—	71.3	90
												12.6	83.9	100
030	460	414	508	25.6	120	19.9	114	2	2.7	15	21	—	78.3	100
									(ea)			12.6	90.9	110
										20	27	—	84.7	110
												12.6	97.3	110
										10	11	—	57.4	70
												12.6	70.0	90
	575	518	632	20.5	96	16	91	2	2.4	15	17	—	63.4	80
									(ea)			12.6	76.0	90
										20	22	—	68.8	90
												12.6	81.4	100

LEGEND

FLA — Full Load Amps

HACR — Heating, Air Conditioning and Refrigeration

IFM — Indoor (Evaporator) Fan Motor

LRA — Locked Rotor Amps

MCA — Minimum Circuit Amps

MOCP— Maximum Overcurrent Protection

NEC — National Electrical Code

OFM — Outdoor (Condenser) Fan Motor

RLA — Rated Load Amps

*Fuse or HACR circuit breaker per NEC.

NOTES:

1.In compliance with NEC requirements for multimotor and combi- nation load equipment (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 volt- age is greater than 2%. Use the following formula to determine the percent of voltage imbalance.

% Voltage imbalance

= 100 x	max voltage deviation from average voltage
	average voltage

Example: Supply voltage is 460-3-60.

AB = 452 v BC = 464 v AC = 455 v

Average Voltage = 452 + 464 + 455 3

1371

=

3

= 457

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.

7

% Voltage Imbalance = 100 x 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.

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