1 Scope
This technical specification specifies test methods for determining losses and efficiencies
of converter-fed AC induction motors within the scope of IEC 60034‑1. The AC induction motor is then part of a variable frequency power drive system (PDS)
as defined in IEC 61800‑2, IEC 61800‑4 or IEC/TS 61800‑8
The additional harmonic losses determined by use of this technical specification are for comparison of different
motor designs, but they are not appropriate to be used for efficiency determination
of a PDS in a driven application with its wide range of torque versus speed operating
points.