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Table 8 — Electrical Data — 38AUQ*07-12 60 Hz Units
LEGEND
UNIT
SIZE
38AUQ
FACTORY-
INSTALLED
OPTION
NOMINAL
VOLTAGE
VOLTAGE
RANGE
‡
COMPRESSOR FAN MOTORS
POWER
SUPPLY
V-Ph-Hz MIN MAX RLA LRA FLA (ea) QTY MCA MOCP
*07
NONE OR DISCONNECT
208/230-3-60 187 253 19.0 123 1.5 2
26.8 45
CONVENIENCE OUTLET 31.6 50
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
*08
NONE OR DISCONNECT
208/230-3-60 187 253 25.0 164 1.5 2
34.3 50
CONVENIENCE OUTLET 39.1 60
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
*12
NONE OR DISCONNECT
208/230-3-60 187 253 30.1 225 1.5 2
40.6 60
CONVENIENCE OUTLET 45.4 60
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
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.
Example: Supply voltage is 208/230-3-60
AB = 224 v
BC = 231 v
AC = 226 v
Average Voltage =
(224 +231 + 226)
=
681
3
3
=227
Determine maximum deviation from average voltage.
(AB) 227 – 224 = 3 v
(BC) 231 – 227 = 4 v
(AC)227–226=1v
Maximum deviation is 4 v.
Determine percent of voltage imbalance.
% Voltage Imbalance = 100 x
4
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 ismore than
2%, contact your local electric utility company immediately.
%VoltageImbalance =100x
max voltage deviation from average voltage
averagevoltage