A Method of Calculation for Short Circuit Current of Alternator

Abstract

A practical calculation for short circuit current of alternator is shown. On the assumptions that magnetic circuits are all laminated, the armature current is lag behind the voltage by 90° and armature leakage reactance is constant, at first the duration of the transient phen mena is obtained and next the max. possible armature current is calculated with consideration of the field leaka e impedance.