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PRODUCT SCOPE AND NOMINAL EFFICIENCY LEVELS
The NEMA Premium™ efficiency electric motor program scope is single-speed, polyphase, 1-500 horsepower, 2, 4, and 6 pole, squirrel cage induction motors, NEMA Design A or B, continuous rated. Products must meet or exceed the nominal energy efficiency levels presented below. The NEMA Premium™ efficiency levels are contained in NEMAStandards Publication MG 1- 2006, in Tables 12-12 and 12-13, respectively.

Table 12-12 FULL-LOAD EFFICIENCIES FOR 60 HZ NEMA PREMIUM® EFFICIENCY ELECTRIC MOTORS RATED 600 VOLTS OR LESS (RANDOM WOUND)
OPEN MOTORS 2 POLE HP 1 1.5 2 3 5 Nominal Efficiency 77.0 84.0 85.5 85.5 86.5 Minimum Efficiency 74.0 81.5 82.5 82.5 84.0 Nominal Efficiency 85.5 86.5 86.5 89.5 89.5 4 POLE MinimumEfficiency 82.5 84.0 84.0 87.5 87.5 Nominal Efficiency 82.5 86.5 87.5 88.5 89.5 6 POLE Minimum Efficiency 80.0 84.0 85.5 86.5 87.5

7.5 10 15 20 25

88.5 89.5 90.2 91.0 91.7

86.5 87.5 88.5 89.5 90.2

91.0 91.7 93.0 93.0 93.6

89.5 90.2 91.7 91.7 92.4

90.2 91.7 91.7 92.4 93.0

88.5 90.2 90.2 91.0 91.7

30

91.7

90.2

94.1

93.0

93.6

92.4

40 50 60 75 100125 150 200 250

92.4 93.0 93.6 93.6 93.6 94.1 94.1 95.0 95.0

91.0 91.7 92.4 92.4 92.4 93.0 93.0 94.1 94.1

94.1 94.5 95.0 95.0 95.4 95.4 95.8 95.8 95.8

93.0 93.6 94.1 94.1 94.5 94.5 95.0 95.0 95.0

94.1 94.1 94.5 94.5 95.0 95.0 95.4 95.4 95.4

93.0 93.0 93.6 93.6 94.1 94.1 94.5 94.5 94.5

300 350 400 450 500

95.4 95.4 95.8 95.8 95.8

94.5 94.5 95.0 95.0 95.095.8 95.8 95.8 96.2 96.2

95.0 95.0 95.0 95.4 95.4

95.4 95.4 95.8 96.2 96.2

94.5 94.5 95.0 95.4 95.4

Table 12-12 (Continued) FULL-LOAD EFFICIENCIES FOR 60 HZ NEMA PREMIUM® EFFICIENCY ELECTRIC MOTORS RATED 600 VOLTS OR LESS (RANDOM WOUND)
ENCLOSED MOTORS 2 POLE HP 1 1.5 2 3 5 Nominal Efficiency 77.0 84.0 85.5 86.5 88.5 Minimum Efficiency 74.0 81.5 82.5 84.0 86.5 NominalEfficiency 85.5 86.5 86.5 89.5 89.5 4 POLE Minimum Efficiency 82.5 84.0 84.0 87.5 87.5 Nominal Efficiency 82.5 87.5 88.5 89.5 89.5 6 POLE Minimum Efficiency 80.0 85.5 86.5 87.5 87.5

7.5 10 15 20 25

89.5 90.2 91.0 91.0 91.7

87.5 88.5 89.5 89.5 90.2

91.7 91.7 92.4 93.0 93.6

90.2 90.2 91.0 91.7 92.4

91.0 91.0 91.7 91.7 93.0

89.5 89.5 90.2 90.2 91.7

30 40 50 6075 100 125

91.7 92.4 93.0 93.6 93.6 94.1 95.0

90.2 91.0 91.7 92.4 92.4 93.0 94.1

93.6 94.1 94.5 95.0 95.4 95.4 95.4

92.4 93.0 93.6 94.1 94.5 94.5 94.5

93.0 94.1 94.1 94.5 94.5 95.0 95.0

91.7 93.0 93.0 93.6 93.6 94.1 94.1

150 200 250

95.0 95.4 95.8

94.1 94.5 95.0

95.8 96.2 96.2

95.0 95.4 95.4

95.8 95.8 95.8

95.0 95.0 95.0

300 350 400 450 50095.8 95.8 95.8 95.8 95.8

95.0 95.0 95.0 95.0 95.0

96.2 96.2 96.2 96.2 96.2

95.4 95.4 95.4 95.4 95.4

95.8 95.8 95.8 95.8 95.8

95.0 95.0 95.0 95.0 95.0

Table 12-13 FULL-LOAD EFFICIENCIES FOR 60 HZ NEMA PREMIUM® EFFICIENCY ELECTRIC MOTORS RATED 5000 VOLTS OR LESS (FORM WOUND)
OPEN MOTORS 2 POLE HP 250 300 350 400 450 500 Nominal Efficiency 94.5 94.5 94.5 94.594.5 94.5 Minimum Efficiency 93.6 93.6 93.6 93.6 93.6 93.6 Nominal Efficiency 95.0 95.0 95.0 95.0 95.0 95.0 4 POLE Minimum Efficiency 94.1 94.1 94.1 94.1 94.1 94.1 Nominal Efficiency 95.0 95.0 95.0 95.0 95.0 95.0 6 POLE Minimum Efficiency 94.1 94.1 94.1 94.1 94.1 94.1

ENCLOSED MOTORS 2 POLE HP 250 300 350 400 450 500 Nominal Efficiency 95.0 95.0 95.0 95.0 95.0 95.0 MinimumEfficiency 94.1 94.1 94.1 94.1 94.1 94.1 Nominal Efficiency 95.0 95.0 95.0 95.0 95.0 95.0 4 POLE Minimum Efficiency 94.1 94.1 94.1 94.1 94.1 94.1 Nominal Efficiency 95.0 95.0 95.0 95.0 95.0 95.0 6 POLE Minimum Efficiency 94.1 94.1 94.1 94.1 94.1 94.1

For more information about the NEMA Premium™ efficiency electric motor program, go to www.nema.org/premiummotors. 6-3-09 Updated -2-

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