This part of IEC 60034 provides a guideline of technical aspects for the application of energyefficient@ three-phase@ electric motors. It not only applies to motor manufacturers@ OEMs (original equipment manufacturers)@ end users@ regulators and legislators but to all other interested parties. This technical specification is applicable to all electrical machines covered by IEC 60034-30. Most of the information however is also relevant for cage-induction machines with output powers exceeding 375 kW.