ELECTRICAL DATA Ð 579F180-300
| NOMINAL | VOLTAGE |
| COMPRESSOR |
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| OFM |
| IFM | POWER | COMBUSTION |
| POWER SUPPLY | |||||||
| RANGE | NO. 1 | NO. 2 |
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| EXHAUST | FAN MOTOR |
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UNIT | VOLTAGE |
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| (60 Hz) | Min | Max | RLA |
| LRA | RLA |
| LRA | Qty | Hp | FLA | FLA | FLA | LRA | FLA |
| MCA |
| MOCP² |
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180 | 208/230 | 187 | 254 | 61.0 |
| 266 | Ð |
| Ð | 3 | 1¤2 | 1.70 | 10.5/10.5 | Ð | Ð | 0.57 |
| 92/92 |
| 150/150 |
(3 phase) |
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| 4.6 | 18.8 | 0.57 |
| 96/96 |
| 150/150 | |||||||||||
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(15 |
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460 |
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| Ð | Ð | 0.30 |
| 42 |
| 70 | |
Tons) | 414 | 508 | 28.0 |
| 120 | Ð |
| Ð | 3 | 1¤2 | 0.80 | 4.8 |
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(3 phase) |
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| 2.3 | 6.0 | 0.30 |
| 45 |
| 70 | |||||||||||
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216 | 208/230 | 187 | 254 | 35.6 |
| 198 | 28.2 |
| 160 | 3 | 1¤2 | 1.70 | 15.8/15.8 | Ð | Ð | 0.57 |
| 94/94 |
| 125/125 |
(3 phase) |
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| 4.6 | 18.8 | 0.57 |
| 98/98 |
| 125/125 | |||||||||||
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(18 |
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460 |
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| Ð | Ð | 0.30 |
| 47 |
| 60 | |
Tons) | 414 | 508 | 17.8 |
| 99 | 14.1 |
| 80 | 3 | 1¤2 | 0.80 | 7.9 |
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| 2.3 | 6.0 | 0.30 |
| 49 |
| 60 | ||||||||||||
| (3 phase) |
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240 | 208/230 | 187 | 254 | 35.6 |
| 198 | 35.6 |
| 198 | 2 | 1 | 5.50 | 25.0/25.0 | Ð | Ð | 0.57 |
| 116/116 |
| 150/150 |
(3 phase) |
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| 4.6 | 18.8 | 0.57 |
| 121/121 |
| 150/150 | |||||||||||
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(20 |
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460 |
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| Ð | Ð | 0.30 |
| 59 |
| 70 | |
Tons) | 414 | 508 | 17.8 |
| 99 | 17.8 |
| 99 | 2 | 1 | 2.80 | 13.0 |
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| (3 phase) |
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| 2.3 | 6.0 | 0.30 |
| 61 |
| 70 | ||||||||||
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300 | 208/230 | 187 | 254 | 43.6 |
| 228 | 43.6 |
| 228 | 2 | 1 | 5.50 | 28.0/28.0 | Ð | Ð | 0.57 |
| 137/137 |
| 175/175 |
(3 phase) |
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| 4.6 | 18.8 | 0.57 |
| 142/142 |
| 175/175 | |||||||||||
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(25 |
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460 |
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| Ð | Ð | 0.30 |
| 70 |
| 90 | |
Tons) | 414 | 508 | 22.1 |
| 114 | 22.1 |
| 114 | 2 | 1 | 2.80 | 14.6 |
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| (3 phase) |
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| 2.3 | 6.0 | 0.30 |
| 72 |
| 90 | ||||||||||
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| LEGEND |
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 | |
NEC | Ð National Electrical Code |
OFM | Ð Outdoor (Condenser) Fan Motor |
RLA | Ð Rated Load Amps |
*Used to determine minimum disconnect size per NEC. ²Fuse or HACR circuit breaker.
2.Unbalanced
Never operate a motor where a phase imbalance in supply voltage is greater than 2%. Use the following formula to determine the percent voltage imbalance.
% Voltage Imbalance
= 100 x | max voltage deviation from average voltage | |
average voltage | ||
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EXAMPLE: Supply voltage is
AB = 452 v
BC = 464 v
AC = 455 v
Average Voltage = 452 + 464 + 455
=
3
1371
3
= 457
Determine maximum deviation from average voltage. (AB) 457 - 452 = 5 v
(BC) 464 - 457 = 7 v
(AC) 457 - 455 = 2 v Maximum deviation is 7 v.
Determine percent voltage imbalance.
% Voltage Imbalance = 100 x
7
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. Canadian units may be fuse or circuit breaker.
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 2%, contact your local electric utility company immediately.
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