What is the principle of induced overvoltage withstand test?



 Inducedwithstand voltage testPrinciple: Apply an operating impulse voltage to the low-voltage winding of a power transformer, and through electromagnetic induction, the insulation of the high-voltage winding of the transformer is subjected to avoltage withstand test.

The voltage waveform applied in the test simulates a waveform generated in the power system due to switching operations or faults, called the operating impulse voltage wave. According to the regulations of China's electric power industry standards, the operating impulse inducedwithstand voltage test
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