The impact of the induction motor on short-circuit current

Simplified analytical models for calculation of the induction motor´s short-circuit current are presented. Laboratory tests have been performed on two induction motors with low power rating, 26 kW and 122 kW, respectively, in order to measure their short-circuit current. Results calculated according to the available literature have been compared to those acquired by testing. Calculations have also been made for a high-voltage induction motor rated 1250 kW, whose parameters have been known.