calculate external resistance values to add to the rotor of a slip ring induct

calculate external resistance values to add to the rotor of
a slip ring induction motor. STATOR- 415 V, 3 phase delta,
1100 A, 50 Hz, 1490 rpm, pf 0,86 ROTOR - 660 V, 590 A, 50
Hz. STATOR current at each steps STEP1-600A,STEP2-
800A,STEP3-1000A,STEP4-1100A.

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