21
Table 11 – Electrical Data — 38AUZ*07--14 50 Hz Units
UNIT V --- P h --- H z
VOLTAGE
RANGE
}
COMPRESSOR 1 OFM
POWER
SUPPLY
DISCONNECT
SIZE
MIN MAX RLA LRA OTY FLA MCA Fuse FLA LRA
38AUZ*07 4 0 0 --- 3 --- 5 0 360 440 9.7 64 2 .07 13.5 20 13 68
38AUZ*08 4 0 0 --- 3 --- 5 0 360 440 12.2 100 2 .07 16.7 25 16 104
NOTE: See “Legend and Notes for Tables 11 & 12”
Table 12 – Elect rical Data — 38AUD*12--14 50 Hz Units
UNIT V --- P h --- H z
VOLTAGE
RANGE
}
COMP RESSOR
1
COMP RESSOR
2
OFM (ea)
POWER
SUPPLY
DISCONNECT
SIZE
MIN MAX RLA LRA RLA LRA QTY FLA MCA Fuse FLA LRA
38AUD*12 4 0 0 --- 3 --- 5 0 360 440 7.8 52 7.8 52 2 0.7 19.0 25 20 108
38AUD*14 4 0 0 --- 3 --- 5 0 360 440 10.6 74 10.6 74 2 0.7 25.3 30 26 152
NOTE: See “Legend and Notes for Tables 11 & 12”
Legend and Notes for Tables 11 and 12
LEGEND:
F L A --- Fu l l L o a d A m p s
LRA --- Locked Rotor Amps
MCA --- Minimum Circuit Amps
Protection
NEC --- National Electrical Code
RLA --- Rated L oad Amps
}
Units are suitable for use on electrical systems where voltage
supplied to the unit terminals is not b elow or above the listed
limits.
NOTES:
1. The MCA and Fuse 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. 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 de-
termine the percentage of voltage imbalance.
Example: Supply voltage is 400-3-50
% Voltage Imbalance = 100 x
max voltage deviation from average voltage
average voltage
AB = 394 v
BC = 401 v
AC = 396 v
Average Voltage =
(394 + 401 + 396)
=
1191
3
3
= 397
Determine maximum deviation from average voltage.
(AB) 397 – 394 = 3 v
(BC) 401 – 397 = 4 v
(AC) 397 – 396 = 1 v
Maximum deviation is 4 v.
Determine percent of voltage imbalance.
% Voltage Imbalance = 100 x
4
397
= 1.00%
This amount of phase imbalance is satisfactory as it is b elow the
maximum allowable 2%.
IMPORTANT: If the supply voltage phase imbalance is more than
2%, contact your local electric utility company immediately.
38AU
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