Bryant manual Ð Electrical Data Ð 580G,H240-360cont, Ð13Ð

Table 3Ð Electrical Data Ð 580G,H240-360 (cont)

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)
											10		30.8/	Ð	Ð	0.96	151.9/149.1	200/200
													28.0	23.6	41.6	0.96	175.5/172.7	225/225
	208/230	187	254	57.1	266	39.1	228	2	1	5.3	15		46.2/	Ð	Ð	0.96	167.3/163.1	200/200
													42.0	23.6	41.6	0.96	190.9/186.7	225/225
											20		59.4/	Ð	Ð	0.96	180.5/175.1	225/225
													54.0	23.6	41.6	0.96	204.1/198.7	250/250
											10		14.0	Ð	Ð	0.50	71.3	90
														12.6	23.6	0.50	83.9	100
324	460	414	508	25.6	120	19.9	114	2	1	2.7	15		21.0	Ð	Ð	0.50	78.3	100
														12.6	23.6	0.50	90.9	110
											20		27.0	Ð	Ð	0.50	84.3	100
														12.6	23.6	0.50	96.9	110
											10		11.0	Ð	Ð	0.50	57.4	70
														12.6	23.6	0.50	70.0	90
	575	518	632	20.5	96	16.0	91	2	1	2.4	15		17.0	Ð	Ð	0.50	63.4	80
														12.6	23.6	0.50	76.0	90
											20		22.0	Ð	Ð	0.50	68.4	80
														12.6	23.6	0.50	81.0	100
											10		30.8/	Ð	Ð	0.96	169.9/167.1	225/200
													28.0	23.6	41.6	0.96	193.5/190.7	250/225
	208/230	187	254	57.1	266	57.1	266	2	1	5.3	15		46.2/	Ð	Ð	0.96	185.3/181.1	225/225
													42.0	23.6	41.6	0.96	208.9/204.7	250/250
											20		59.4/	Ð	Ð	0.96	198.5/193.1	250/250
													54.0	23.6	41.6	0.96	222.1/216.7	275/250
											10		14.0	Ð	Ð	0.50	77.0	100
														12.6	23.6	0.50	89.6	110
360	460	414	508	25.6	120	25.6	120	2	1	2.7	15		21.0	Ð	Ð	0.50	84.0	100
														12.6	23.6	0.50	96.6	110
											20		27.0	Ð	Ð	0.50	90.0	110
														12.6	23.6	0.50	102.6	125
											10		11.0	Ð	Ð	0.50	61.9	80
														12.6	23.6	0.50	74.5	90
	575	518	632	20.5	96	20.5	96	2	1	2.4	15		17.0	Ð	Ð	0.50	67.9	80
														12.6	23.6	0.50	80.5	100
											20		22.0	Ð	Ð	0.50	72.9	90
														12.6	23.6	0.50	85.5	100

	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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