International comfort products CAS090 G Series Installation Instructions Manual page 15

UNIT V ---Ph---Hz
208/230--- 3--- 60
460--- 3--- 60
CAS090*G/H
575--- 3--- 60
Legend and Notes for Table 7
LEGEND:
FLA --- Full Load Amps
LRA --- Locked Rotor Amps
MOCP --- Maximum Over Current
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 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. The 575--- v units are UL, Canada--- listed only.
4. 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.
501 01 3600 01
Table 7 – Electrical Data — CAS090*G/H 60 Hz Units
WITHOUT POWERED CONVENIENCE OUTLET
VOLTAGE
COMPRESSOR
RANGE }
MIN MAX RLA LRA
187 253 24.0 186
414 506 12.6 100
518 633 9.9 78
Specifications are subject to change without notice.
POWER
OFM (ea)
SUPPLY
QTY FLA MCA
2 1.5 33
2 0.8 18
2 0.6 14
Example: Supply voltage is 230-3-60
max voltage deviation from average voltage
% Voltage Imbalance = 100 x
AB = 224 v
BC = 231 v
AC = 226 v
(224 + 231 + 226)
Average Voltage =
3
= 227
Determine maximum deviation from average voltage.
(AB) 227 – 224 = 3 v
(BC) 231 – 227 = 4 v
(AC) 227 – 226 = 1 v
Maximum deviation is 4 v.
Determine percent of voltage imbalance.
% Voltage Imbalance = 100 x
= 1.76%
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 electric utility company immediately.
DISCONNECT SIZE
MOCP FLA LRA
50 31 192
25 16 104
20 13 82
average voltage
681
=
3
4
227
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