Carrier 50BV020-064 specifications A - Electrical Data - 50BVC,E,J,K,Q

For an unbalanced 3-phase supply voltage, use the follow- ing formula to determine the percent of voltage imbalance:

Percent 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:

% Voltage Imbalance = 100 x 7 = 1.53% 457

This amount of phase imbalance is satisfactory as it is be- low the maximum allowable 2%.

IMPORTANT: If supply voltage phase imbalance is more than 2%, contact the local electric utility com- pany immediately.

POWER WIRING — Properly sized fuses or HACR (Heat- ing, Air Conditioning and Refrigeration) circuit breakers must be installed for branch circuit protection, according to the national and applicable local codes. See unit nameplate and Tables 9A and 9B for maximum overcurrent protection size.

These units are provided with single point, main power supply terminal blocks. Refer to Fig. 2-14 for conduit connec- tion locations. Connect the power leads as indicated on the unit wiring diagrams (found in the Troubleshooting section) and be certain to connect the ground lead to the ground lug in the unit high voltage electrical box. Refer to Tables 9A and 9B for unit electrical data.

Table 9A — Electrical Data — 50BVC,E,J,K,Q

		NOMINAL	VOLTAGE			COMPRESSOR				INDOOR FAN MOTOR			POWER		DISCONNECT
UNIT SIZE			RANGE		No. 1			No. 2					SUPPLY		SIZE
		VOLTAGE
50BVC,E,J,K,Q
		(3 Ph, 60 Hz)	Min	Max	RLA		LRA	RLA	LRA	Qty	HP	FLA	MCA	MOCP	FLA
											(ea)	(ea)
											1.5	5.0	84.0	110	75.8
		208/230	187	253	32.9		195	32.9	195	2	2	6.4	86.8	110	78.6
											3	9.0	92.0	110	83.8
											5	12.2	98.4	110	90.2
											1.5	2.5	42.1	50	38.0
	020	460	414	506	16.5		95	16.5	95	2	2	3.2	43.5	50	39.4
											3	4.5	46.1	50	42.0
											5	6.1	49.3	50	45.2
											1.5	2.0	34.6	45	31.2
		575	518	633	13.6		80	13.6	80	2	2	2.0	34.6	45	31.2
											3	3.6	37.8	45	34.4
											5	5.4	41.4	45	38.0
											2	6.4	88.4	120	80.0
		208/230	187	253	33.6		225	33.6	225	2	3	9.0	93.6	120	85.2
											5	12.2	100.0	120	91.6
											2	3.2	48.3	60	43.6
	024	460	414	506	18.6		114	18.6	114	2	3	4.5	50.85	60	46.2
											5	6.1	54.05	60	49.4
											2	2.0	34.6	45	31.2
		575	518	633	13.6		80	13.6	80	2	3	3.6	37.8	45	34.4
											5	5.4	41.4	45	38.0
		208/230	187	253	53.6		245	53.6	245	2	3	9.0	138.6	190	125.2
											5	12.2	145.0	190	131.6
	028	460	414	506	20.7		125	20.7	125	2	3	4.5	55.6	70	50.4
											5	6.1	58.8	70	53.6
		575	518	633	16.4		100	16.4	100	2	3	3.6	44.1	60	40.0
											5	5.4	47.7	60	43.6
		208/230	187	253	59.1		425	59.1	425	2	5	12.2	157.4	200	142.6
	034	460	414	506	26.4		187	26.4	187	2	5	6.1	71.6	90	65.0
		575	518	633	20.5		148	20.5	148	2	5	5.4	56.9	70	51.8
	LEGEND
FLA	— Full Load Amps
HP	— Horsepower
LRA	— Locked Rotor Amps
MCA	— Minimum Circuit Amps
MOCP — Maximum Overcurrent Protection
RLA	— Rated Load Amps

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