power frequency withstand voltage test

When customers run into trouble, I'm the one to turn to. Today, let me show you the power frequency withstand voltage test on a circuit breaker. Let's go. Put on your gloves. Connect the main unit to the output, the meter, and the ground wire. Attach the portable power frequency test transformer. Short the upper and lower contacts separately. Connect the ground wire to the lower end. Connect the high voltage to the upper end. Now, perform the withstand voltage test on the A, B, C phase breaks. Raise the voltage to 42 kV for one minute. Time's up.

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Tina

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