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Motor Efficiency: NEMA PREMIUM 3PH
300 to 500
Motor efficiency and power factor � NEMA MG 1 efficiency and power factor data at full, 75%, and 50% load for standard and premium efficiency motors by horsepower
| motor class | hp numeric | efficiency 50 pct (%) | efficiency 75 pct (%) | efficiency fl pct (%) | fla 230V (A) | fla 460V (A) | hp rating | kw rating (kW) | pf 50 (dimensionless) | pf 75 (dimensionless) | pf fl (dimensionless) | poles | speed rpm (rpm) | standard |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NEMA PREMIUM 3PH | 300 | 95.5 | 96.5 | 96.2 | 722 | 361 | 300 | 223.8 | 0.81 | 0.88 | 0.91 | 4 | 1,790 | NEMA MG 1-2016 Table 12-12 |
| NEMA PREMIUM 3PH | 350 | 95.5 | 96.5 | 96.2 | 840 | 420 | 350 | 261.1 | 0.81 | 0.88 | 0.91 | 4 | 1,790 | NEMA MG 1-2016 Table 12-12 |
| NEMA PREMIUM 3PH | 400 | 95.8 | 96.5 | 96.2 | 956 | 478 | 400 | 298.4 | 0.81 | 0.88 | 0.91 | 4 | 1,790 | NEMA MG 1-2016 Table 12-12 |
| NEMA PREMIUM 3PH | 450 | 95.8 | 96.5 | 96.2 | 1,076 | 538 | 450 | 335.7 | 0.82 | 0.88 | 0.91 | 4 | 1,790 | NEMA MG 1-2016 Table 12-12 |
| NEMA PREMIUM 3PH | 500 | 95.8 | 96.5 | 96.2 | 1,192 | 596 | 500 | 373 | 0.82 | 0.89 | 0.92 | 4 | 1,790 | NEMA MG 1-2016 Table 12-12 |
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