Bryant manual Ð Electrical Data Ð 580G,H240-360, Ð12Ð

Table 3Ð Electrical Data Ð 580G,H240-360

UNIT	NOMINAL	VOLTAGE		COMPRESSOR					OFM			IFM		POWER		COMBUSTION	POWER SUPPLY
		RANGE		No. 1		No. 2								EXHAUST		FAN MOTOR
SIZE	VOLTAGE
580G,H	(3 Ph 60 Hz)	Min	Max	RLA	LRA	RLA	LRA	Qty	Hp	FLA	Hp		FLA	FLA	LRA	FLA	MCA	MOCP*
										(ea)
											5		16.7/	Ð	Ð	0.96	101.8/100.3	125/125
													15.2	23.6	41.6	0.96	125.4/123.9	150/150
	208/230	187	254	39.1	228	25.6	160	2	1	5.3	10		30.8/	Ð	Ð	0.96	115.9/113.1	150/150
													28.0	23.6	41.6	0.96	139.5/136.7	175/175
											15		46.2/	Ð	Ð	0.96	131.3/127.1	150/150
													42.0	23.6	41.6	0.96	154.9/150.7	175/175
											5		7.6	Ð	Ð	0.50	49.4	60
														12.6	23.6	0.50	62.0	80
240	460	414	508	19.9	114	11.5	80	2	1	2.7	10		14.0	Ð	Ð	0.50	55.8	70
														12.6	23.6	0.50	68.4	80
											15		21.0	Ð	Ð	0.50	62.8	80
														12.6	23.6	0.50	75.4	90
											5		6.1	Ð	Ð	0.50	40.5	50
														12.6	23.6	0.50	53.1	60
	575	518	632	16.0	91	9.6	64	2	1	2.4	10		11.0	Ð	Ð	0.50	45.4	60
														12.6	23.6	0.50	58.0	70
											15		17.0	Ð	Ð	0.50	51.4	60
														12.6	23.6	0.50	64.0	80
											7.5		24.2/	Ð	Ð	0.96	122.8/120.6	150/150
													22.0	23.6	41.6	0.96	146.4/144.2	175/175
	208/230	187	254	39.1	228	39.1	228	2	1	5.3	10		30.8/	Ð	Ð	0.96	129.4/126.6	150/150
													28.0	23.6	41.6	0.96	153.0/150.2	175/175
											15		46.2/	Ð	Ð	0.96	144.8/140.6	175/175
													42.0	23.6	41.6	0.96	168.4/164.0	200/200
											7.5		11.0	Ð	Ð	0.50	61.2	80
														12.6	23.6	0.50	73.8	90
300	460	414	508	19.9	114	19.9	114	2	1	2.7	10		14.0	Ð	Ð	0.50	64.2	80
														12.6	23.6	0.50	76.8	90
											15		21.0	Ð	Ð	0.50	71.2	90
														12.6	23.6	0.50	83.8	100
											7.5		9.0	Ð	Ð	0.50	49.8	60
														12.6	23.6	0.50	62.4	70
	575	518	632	16.0	91	16.0	91	2	1	2.4	10		11.0	Ð	Ð	0.50	51.8	60
														12.6	23.6	0.50	64.4	80
											15		17.0	Ð	Ð	0.50	57.8	70
														12.6	23.6	0.50	70.4	80

	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
NEC	Ð National Electrical Code
OFM	Ð Outdoor (Condenser) Fan Motor
RLA	Ð Rated Load Amps

*Fuse or HACR circuit breaker.

or

NOTES:

1.In compliance with NEC requirements for multimotor and combina- tion load equipment (refer to NEC Articles 430 and 440), the over- current protective device for the unit shall be fuse or HACR breaker. 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 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 − 45 2 = 5 v

(BC) 464 − 45 7 = 7 v

(AC) 457 − 45 5 = 2 v Maximum deviation is 7 v.

Determine percent voltage imbalance.

% Voltage Imbalance = 100 x		7
	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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