The test voltage applied in the HV test of rotor winding of three-phase IM when it is subjected to be reversed

Question

The test voltage applied in the HV test of rotor winding of three-phase IM when it is subjected to be reversed or braked by reversing the primary supply while the motor is running is

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Option C: 1000 V + four times the open circuit standstill secondary voltage

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Practice and solve "The test voltage applied in the HV test of rotor winding of three-phase IM when it is subjected to b..." for Electrical - Economics for Engineers. The correct answer is Option C: 1000 V + four times the open circuit standstill secondary voltage. Detailed step-by-step solution, conceptual clarity, and formulas on Examoogle.

Examoogle · Answer

Option A: 1000 V + twice the rated voltage with a minimum of 1500 V

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Option B: 1000 V + twice the open circuit standstill voltage as measured between slip rings or secondary terminals

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Option D: All of these

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