IE3 PREMIUM EFFICIENCY

Standard IEC/EN 60034-30-1 on efficiency classes
of line operated AC motors was published by the
International Electrotechnical Commission (IEC) on
March 6, 2014. This IEC standard is concerned with the
global harmonization of energy efficiency classes for
electric motors.
All technical constructions of electric motors are covered
as long as they are rated for direct online operation. The
coverage of the new standard includes:
› Single speed electric motors (single and three phase),
50 and 60 Hz.
› 2, 4, 6 or 8 poles.
› Rated output PN from 0.12 kW to 1000 kW.
› Rated voltage UN above 50 V up to 1 kV.
› Motors, capable of continuous operation at their rated
power with a temperature rise within the specified
insulation temperature class.
› Motors, marked with any ambient temperature within
the range of -20 °C to +60 °C.
› Motors, marked with an altitude up to 4000 m above
sea level.