Table 4 Ð Electrical Data (cont)
UNIT | NOMINAL | VOLTAGE | COMPRESSOR |
| OFM |
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| IFM | POWER | COMBUSTION |
| POWER SUPPLY | |||||||||
RANGE | No. 1 | No. 2 |
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| EXHAUST | FAN MOTOR |
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SIZE | VOLTAGE |
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48E | (3 Ph 60 Hz) | Min | Max | RLA | LRA | RLA | LRA | Qty | Hp |
| FLA | Hp |
| FLA | FLA | LRA | FLA |
| MCA |
| MOCP* |
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| 15 |
| 46.2/ | Ð | Ð | 0.96 |
| 223.1/218.9 |
| 275/275 |
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| 42.0 | 23.6 | 41.6 | 0.96 |
| 246.7/242.5 |
| 300/300 | |
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| 208/230 | 187 | 254 | 69.2 | 345 | 69.2 | 345 | 4 | 1 |
| 5.3 | 20 |
| 59.4/ | Ð | Ð | 0.96 |
| 236.3/230.9 |
| 300/300 |
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| 54.0 | 23.6 | 41.6 | 0.96 |
| 259.9/254.5 |
| 300/300 | |||||||||||
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| 25 |
| 74.8/ | Ð | Ð | 0.96 |
| 251.7/244.9 |
| 300/300 |
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| 68.0 | 23.6 | 41.6 | 0.96 |
| 275.3/268.5 |
| 300/300 | |
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| 15 |
| 21.0 | Ð | Ð | 0.50 |
| 96.6 |
| 125 |
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| 12.6 | 23.6 | 0.50 |
| 109.2 |
| 125 | ||
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044 | 460 | 414 | 508 | 28.8 | 173 | 28.8 | 173 | 4 | 1 |
| 2.7 | 20 |
| 27.0 | Ð | Ð | 0.50 |
| 102.6 |
| 125 |
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| 12.6 | 23.6 | 0.50 |
| 115.2 |
| 125 | |||||||||||||
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| 25 |
| 34.0 | Ð | Ð | 0.50 |
| 109.6 |
| 125 |
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| 12.6 | 23.6 | 0.50 |
| 122.2 |
| 150 | ||
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| 15 |
| 17.0 | Ð | Ð | 0.50 |
| 86.7 |
| 110 |
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| 12.6 | 23.6 | 0.50 |
| 99.3 |
| 125 | ||
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| 575 | 518 | 632 | 26.7 | 120 | 26.7 | 120 | 4 | 1 |
| 2.4 | 20 |
| 22.0 | Ð | Ð | 0.50 |
| 91.7 |
| 110 |
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| 12.6 | 23.6 | 0.50 |
| 104.3 |
| 125 | ||||||||||||
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| 25 |
| 27.0 | Ð | Ð | 0.50 |
| 96.7 |
| 110 |
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| 12.6 | 23.6 | 0.50 |
| 109.3 |
| 125 | ||
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| 20 |
| 59.4/ | Ð | Ð | 0.96 |
| 252.4/247.0 |
| 300/300 |
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| 54.0 | 23.6 | 41.6 | 0.96 |
| 276.0/270.6 |
| 300/300 | |
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| 208/230 | 187 | 254 | 82.1 | 446 | 69.2 | 345 | 4 | 1 |
| 5.3 | 25 |
| 74.8/ | Ð | Ð | 0.96 |
| 267.8/261.0 |
| 300/300 |
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| 68.0 | 23.6 | 41.6 | 0.96 |
| 291.4/284.6 |
| 300/300 | |||||||||||
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| 30 |
| 88.0/ | Ð | Ð | 0.96 |
| 281.0/273.0 |
| 300/300 |
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| 80.0 | 23.6 | 41.6 | 0.96 |
| 304.6/296.6 |
| 350/300 | |
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| 20 |
| 27.0 | Ð | Ð | 0.50 |
| 119.5 |
| 150 |
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| 12.6 | 23.6 | 0.50 |
| 132.1 |
| 150 | ||
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048 | 460 | 414 | 508 | 42.3 | 223 | 28.8 | 173 | 4 | 1 |
| 2.7 | 25 |
| 34.0 | Ð | Ð | 0.50 |
| 126.5 |
| 150 |
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| 12.6 | 23.6 | 0.50 |
| 139.1 |
| 175 | |||||||||||||
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| 30 |
| 40.0 | Ð | Ð | 0.50 |
| 132.5 |
| 150 |
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| 12.6 | 23.6 | 0.50 |
| 145.1 |
| 175 | ||
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| 20 |
| 22.0 | Ð | Ð | 0.50 |
| 101.6 |
| 125 |
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| 12.6 | 23.6 | 0.50 |
| 114.2 |
| 125 | ||
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| 575 | 518 | 632 | 34.6 | 164 | 26.7 | 120 | 4 | 1 |
| 2.4 | 25 |
| 27.0 | Ð | Ð | 0.50 |
| 106.6 |
| 125 |
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| 12.6 | 23.6 | 0.50 |
| 119.2 |
| 150 | ||||||||||||
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| 30 |
| 32.0 | Ð | Ð | 0.50 |
| 111.6 |
| 125 |
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| 12.6 | 23.6 | 0.50 |
| 124.2 |
| 150 | ||
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LEGEND |
EXAMPLE: Supply voltage is
FLA | Ð Full Load Amps |
HACR | Ð Heating, Air Conditioning and |
| Refrigeration |
IFM | Ð Indoor (Evaporator) Fan Motor |
LRA | Ð Locked Rotor Amps |
MCA | Ð Minimum Circuit Amps |
MOCP Ð Maximum Overcurrent Protection |
AB = 452 v
BC = 464 v
AC = 455 v
Average Voltage =
452 + 464 + 455
3
NEC | Ð | National Electrical Code | or |
OFM | Ð | Outdoor (Condenser) Fan Motor |
|
=
1371
3
RLA Ð Rated Load Amps |
*Fuse or HACR circuit breaker.
NOTES:
1. In compliance with NEC requirements for multimotor and combi- |
nation load equipment (refer to NEC Articles 430 and 440), the |
overcurrent protective device for the unit shall be fuse or HACR |
= 457
Determine maximum deviation from average voltage. (AB) 457 − 45 2 = 5 v
(BC) 464 − 45 7 = 7 v
(AC) 457 − 45 5 = 2 v Maximum deviation is 7 v.
Determine percent voltage imbalance.
breaker. Canadian units may be fuse or circuit breaker. |
% Voltage Imbalance = 100 x
7
2. Unbalanced |
Never operate a motor where a phase imbalance in supply volt- |
age is greater than 2%. Use the following formula to determine |
the percent voltage imbalance. |
% Voltage Imbalance
457
= 1.53%
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
= 100 x
max voltage deviation from average voltage
average voltage
2%, contact your local electric utility company immediately.
20