Carrier 38HDR018-060, 38HDF018-036 specifications 38HDF Electrical Data

Table 2 — 38HDF Electrical Data

38HDF	V-PH-Hz	VOLTAGE RANGE*		COMPRESSOR		OUTDOOR FAN MOTOR			MIN CKT	FUSE/HACR
UNIT SIZE		Min	Max	RLA	LRA	FLA	NEC Hp	kW Out	AMPS	BKR AMPS
018	208/230-1-60	187	253	10.0	48.0	0.80	0.125	0.09	13.3	20
024	208/230-1-60	187	253	14.3	58.3	0.80	0.125	0.09	18.7	30
030	208/230-1-60	187	253	15.7	73.0	0.80	0.125	0.09	20.4	35
	208/230-1-60	187	253	20.0	112.0	1.45	0.25	0.19	26.5	45
036	208/230-3-60	187	253	14.7	88.0	1.45	0.25	0.19	19.8	30
	460-3-60	414	506	6.6	44.0	0.80	0.25	0.19	9.1	15

	LEGEND
FLA	— Full Load Amps
HACR	— Heating, Air Conditioning, Refrigeration
LRA	— Locked Rotor Amps
NEC	— National Electrical Code
RLA	— Rated Load Amps (Compressor)

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 percentage of voltage imbalance:

*Permissible limits of the voltage range at which unit will operate satisfactorily.

% Voltage Imbalance = 100 x

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NOTES:

1.Control circuit is 24 v on all units and requires an external power source.

2.All motors and compressors contain internal overload protection.

3.In compliance with NEC (U.S.A. Standard) requirements for mul- timotor and combination load equipment (refer to NEC Articles 430 and 440), the overcurrent protective device for the unit shall be fuse or HACR breaker.

4.Motor RLA values are established in accordance with UL (Under- writers’ Laboratories) Standard 465 (U.S.A. Standard).

5.38HDF,HDR018-030 units are only available in single-phase voltage.

6.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 percentage of 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

452 + 464 + 455

Average Voltage =

3

1371

=

3

= 457

457

=1.53%

This amount of phase imbalance is satisfactory as it is below the maximum allowable of 2%.

IMPORTANT: Contact your local electric utility company immedi- ately if the supply voltage phase imbalance is more than 2%.

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