Carrier appendix Electrical Data 38AUQ*07-12 Hz Units

	Table 8 — Electrical Data — 38AUQ*07-12					60 Hz Units
UNIT	FACTORY-	NOMINAL	VOLTAGE		COMPRESSOR		FAN MOTORS		POWER
		VOLTAGE	RANGE‡						SUPPLY
SIZE	INSTALLED
38AUQ	OPTION	V-Ph-Hz	MIN	MAX	RLA	LRA	FLA (ea)	QTY	MCA	MOCP
	NONE OR DISCONNECT	208/230-3-60	187	253	19.0	123	1.5	2	26.8	45
	CONVENIENCE OUTLET								31.6	50
*07	NONE OR DISCONNECT	460-3-60	414	506	9.7	62	0.9	2	13.9	20
	CONVENIENCE OUTLET								16.1	25
	NONE OR DISCONNECT	575-3-60	518	633	7.4	50	0.6	2	10.5	15
	CONVENIENCE OUTLET								12.2	15
	NONE OR DISCONNECT	208/230-3-60	187	253	25.0	164	1.5	2	34.3	50
	CONVENIENCE OUTLET								39.1	60
*08	NONE OR DISCONNECT	460-3-60	414	506	12.2	100	0.9	2	17.1	25
	CONVENIENCE OUTLET								19.3	30
	NONE OR DISCONNECT	575-3-60	518	633	9.0	78	0.6	2	12.5	20
	CONVENIENCE OUTLET								14.2	20
	NONE OR DISCONNECT	208/230-3-60	187	253	30.1	225	1.5	2	40.6	60
	CONVENIENCE OUTLET								45.4	60
*12	NONE OR DISCONNECT	460-3-60	414	506	16.7	114	0.8	2	22.5	30
	CONVENIENCE OUTLET								24.7	30
	NONE OR DISCONNECT	575-3-60	518	633	12.2	80	0.6	2	16.5	25
	CONVENIENCE OUTLET								18.2	30

		LEGEND
FLA	—	Full Load Amps
LRA	—	Locked Rotor Amps
MCA	—	Minimum Circuit Amps
MOCP —		Maximum Overcurrent
		Protection
NEC	—	National Electrical Code
RLA	—	Rated Load Amps

‡Units are suitable for use on electrical systems where voltage supplied to the unit terminals is not below or above the listed limits.

NOTES:

1.The MCA and MOCP values are calculated in accordance with the NEC, Article 440.

2.Motor RLA and LRA values are established in accordance with Underwriters’ Laboratories (UL), Standard 1995.

3.The 575-v units are UL, Canada-listed only.

4.Convenience outlet is available as a factory-installed option and is 115-v, 1 ph, 60 Hz.

5.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 percentage of voltage imbalance.

max voltage deviation from average voltage

% Voltage Imbalance = 100 x

	average voltage
Example: Supply voltage is 208/230-3-60
AB = 224 v
BC = 231 v
AC = 226 v
(224 + 231 + 226)	681
Average Voltage =		=
3	3

=227

Determine maximum deviation from average voltage. (AB) 227 – 224 = 3 v

(BC) 231 – 227 = 4 v (AC) 227 – 226 = 1 v Maximum deviation is 4 v.

Determine percent of voltage imbalance.

	4
% Voltage Imbalance	= 100 x

227

= 1.76%

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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