Carrier installation instructions Electrical Data - 30MPA,MPW Units

EXAMPLE: Supply voltage is 240-3-60.

AB = 243 v

BC = 236 v

AC = 238 v

Average Voltage =	243 + 236 + 238
	3

= 239 v

Determine maximum deviation from average voltage: (AB) 243 – 239 = 4 v

(BC) 239 – 236 = 3 v

(AC) 239 – 238 = 1 v

Maximum deviation is 4 v. Determine percent voltage imbalance:

% Voltage Imbalance =	100 x	4
		239
=	1.7%

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 utility company immediately.

Table 3 — Electrical Data — 30MPA,MPW Units

UNIT SIZE	VOLTS	VOLTAGE*			COMPRESSOR			UNIT
30MPA,MPW	NAMEPLATE	Min	Max	Quantity		LRA	MCA	ICF	MOCP	Rec
	(3 ph, 60 Hz)					(ea.)				Fuse
	208/230	187	253			195	66.4	224.5	90	80
015	380	342	418	2		123	37.6	139.7	50	45
	460	414	508			95	33.1	109.7	45	40
	575	518	632			80	27.5	92.2	35	35
	208/230	187	253			239	80.6	274.8	110	90
020	380	342	418	2		145	53.4	168.7	70	60
	460	414	508			125	40.3	142.9	50	45
	575	518	632			80	32.2	94.3	45	40
	208/230	187	253			340	125.6	395.8	175	150
030	380	342	418	2		196	76.5	230.0	110	90
	460	414	508			179	60.5	205.9	80	70
	575	518	632			132	53.3	155.7	70	60
	208/230	187	253			300	166.7	402.6	200	200
040	380	342	418	3		139	87.4	192.8	110	100
	460	414	508			150	75.1	196.2	90	90
	575	518	632			109	64.7	148.8	80	70
	208/230	187	253			340	181.4	451.6	225	200
045	380	342	418	3		196	110.5	264.0	125	125
	460	414	508			179	87.4	232.8	110	100
	575	518	632			132	77.0	179.4	100	90

	LEGEND
ICF	— Maximum instantaneous current flow during starting.
kcmil	— Thousand circular mils
LRA	— Locked rotor amps.
MCA	— Minimum circuit amps (for wire sizing). Complies with
	NEC, Section 430-24.
MOCP	— Maximum Overcurrent Protection
NEC	— National Electrical Code (U.S.A.)
Rec	— Recommended dual element fuse amps (150% of com-
Fuse	pressor RLA). Size up to the next standard fuse size.

*Supply Range — Units are suitable for use on electrical systems where voltage supplied to the unit terminals is not below or above the listed range limits.

NOTES:

1.All units have one field power terminal block.

2.Maximum incoming wire size is as follows: For units with terminal block:

350 kcmil for unit sizes 030-045; 208/230-3-60 voltages. 2/0 for all other unit sizes; all voltages.

For units with optional non-fused disconnect:

350 kcmil for unit sizes:

030-045; 208/230-3-60 voltages. 045; 380-3-60 voltage.

3/0 for unit sizes:

015,020; 208/230-3-60 voltages.

020-040; 380-3-60 voltage.

030-045; 460-3-60 and 575-3-60 voltages.

2 AWG for unit sizes: 015; 380-3-60 voltage.

015-020; 460-3-60 and 575-3-60 voltages.

3.Additional control circuit power is not required.

4.Any field modification of factory wiring must be in compliance with all applicable codes. Field-installed power wires must be rated 75 C minimum.

5.Use copper conductors only.

6.Control circuit power supply is 24-v single phase. Control power is supplied by the factory-installed control transformer.

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