What motors are in the Scope of the Efficiency Standard?

The efficiency class system specified under IEC 60034-30 is valid for low voltage three phase cage-induction motors with the following specifications:

  • Rated voltage up to 1000V
  • Rated output between 0.75kW and 375kW
  • 2, 4, or 6 poles
  • Rated on the basis of continuous duty (S1) or intermittent periodic duty (S3) with a cyclic duration factor of 80% or higher
  • Capable of operating direct on-line
  • Rated for operating conditions in accordance with IEC 60034-1 (temperature, installation altitude.etc.)
  • Motor with feet, flanges and/or shafts with mechanical dimensions different from IEC 60072-1 are covered by this standard.