Carrier 48AY020-060, 48EW Electrical Data 48AJ,AK,AW,AY Units, Min Max, Rla Lra, FLA MCA Mocp

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

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)
										5	16.7/15.2	—	101.8/100.3	125/125
												23.6/23.6	125.4/123.9	150/150
	208/230	187	253	39.1	228	25.6	160	2	5.3	10	30.8/28.0	—	115.9/113.1	150/150
									(ea)			23.6/23.6	139.5/136.7	175/175
										15	46.2/42.0	—	133.1/127.8	175/150
												23.6/23.6	156.7/151.4	200/175
										5	7.6	—	49.4	60
												12.6	62.0	80
020	460	414	508	19.9	114	11.5	80	2	2.7	10	14	—	55.8	70
									(ea)			12.6	68.4	80
										15	21	—	63.1	80
												12.6	75.7	90
										5	6.1	—	40.5	50
												12.6	53.1	60
	575	518	632	16	91	9.6	64	2	2.4	10	11	—	45.4	60
									(ea)			12.6	58.0	70
										15	17	—	51.7	60
												12.6	64.3	80
										7.5	24.2/22.0	—	122.8/120.6	150/150
												23.6/23.6	146.4/144.2	175/175
	208/230	187	253	39.1	228	39.1	256	2	5.3	10	30.8/28.0	—	129.4/126.6	150/150
									(ea)			23.6/23.6	153.0/150.2	175/175
										15	46.2/42.0	—	146.6/141.3	175/175
												23.6/23.6	170.2/164.9	200/200
										7.5	11	—	61.2	80
												12.6	73.8	90
025	460	414	508	19.9	114	19.9	114	2	2.7	10	14	—	64.2	80
									(ea)			12.6	76.8	90
										15	21	—	71.5	90
												12.6	84.1	100
										7.5	9	—	49.8	60
												12.6	62.4	70
	575	518	632	16	91	16	91	2	2.4	10	11	—	51.8	60
									(ea)			12.6	64.4	80
										15	17	—	58.1	70
												12.6	70.7	80

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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