A 415 V three-phase delta induction motor has starting line current 120 A at rated voltage. Its starting line current at 110 V, in amperes, is ________.
At standstill and unchanged frequency, the equivalent impedance is fixed. Keeping the same delta connection makes line current proportional to applied line voltage.
Therefore Istart=120×110/415=**31.8072 A**, within 31–33 A. No star–delta factor is introduced because the connection has not changed.
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