[1] IEC 60034-30 specifies energy-efficiency classes for single-speed, continuous duty(S1), three-phase, cage-induction motors with 2, 4 or 6 poles.
For each class the efficiency is defined for a rated output range from 0.75 to 375 kW.
In the European Community the IE2 class is mandatory for all new motors since 16 June 2011.
At least IE2 efficiency will be required also for single-phase motors from 0.12 kW up.
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