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What is Lightning Impulse Testing Overshoot Analysis about?

The document discusses investigations into lightning impulse tests with defined overshoots. It was found that for negative polarity impulses, breakdown occurs at the peak of the impulse and is not influenced by overshoot. However, for positive polarity impulses, breakdown occurs in the tail of the impulse up to 2 microseconds after the peak. In this case, higher overshoot amplitudes and frequencies were found to influence the breakdown behavior of insulating materials. This means different k-factor curves a

Author

gustavopalo

Language

EN