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NOMINAL VOLTAGE
UNIT
208/230-3-60
569C072
208/230-3-60
569C090
208/230-3-60
569C120
208/230-3-60
576B090
208/230-3-60
576B102
208/230-3-60
576B120
LEGEND
CSA
—
Canadian Standards Association
FLA
—
Full Load Amps
HACR —
Heating, Air Conditioning and Refrigeration
LRA
—
Locked Rotor Amps
MCA
—
Minimum Circuit Amps
MOCP —
Maximum Overcurrent Protection
NEC
—
National Electrical Code
OFM
—
Outdoor (Condenser) Fan Motor
RLA
—
Rated Load Amps
UL
—
Underwriters' Laboratories
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.
The 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
of voltage imbalance.
% of Voltage Imbalance =
max voltage deviation from average voltage
100 x
average voltage
Table 4 — Electrical Data
VOLTAGE RANGE
(V-Ph-Hz)
Min
187
460-3-60
414
575-3-60
518
187
460-3-60
414
575-3-60
518
187
460-3-60
414
575-3-60
518
187
380-3-60
342
460-3-60
414
575-3-60
518
187
380-3-60
342
460-3-60
414
575-3-60
518
187
380-3-60
342
460-3-60
414
575-3-60
518
COMPRESSOR
Max
RLA
LRA
254
21.8
158
508
10.0
79
632
9.0
65
254
28.8
195
508
14.7
95
632
10.8
80
254
37.8
239
508
17.2
125
632
14.3
90
254
31.5
160
418
19.0
75
508
15.7
80
632
12.6
64
254
39.7
198
418
24.0
93
508
19.9
99
632
15.9
79
254
39.7
198
418
24.0
93
508
19.9
99
632
15.9
79
EXAMPLE: Supply voltage is 460-3-60.
AB = 452 v
BC = 464 v
AC = 455 v
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
= 1.53%
This amount of phase imbalance is satisfactory as it is below the maxi-
mum allowable 2%.
IMPORTANT: If the supply voltage phase imbalance is more than 2%,
contact your local electric utility company immediately.
3. The 575-v units are CSA only.
4. The 380-v units are not UL or CSA listed.
—
7
—
OFM
POWER SUPPLY
FLA
MCA
MOCP
1.9
30.1
40
1.0
13.5
20
1.9
14.1
20
3.8
39.8
50
1.9
20.3
25
1.9
15.4
20
3.1
51.1
70
1.4
23.4
30
1.4
19.8
25
3.1
42.5
50
2.2
26.0
35
1.4
21.0
25
1.4
17.2
20
3.1
52.7
70
2.2
32.2
40
1.4
26.3
35
1.4
21.3
25
3.1
52.7
70
2.2
32.2
40
1.4
26.3
35
1.4
21.3
25
452 + 464 + 455
=
3
1371
=
3
=
457
7
457
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