Investigating the effects of repetitive transients on paper insulation

Repetitive transient aging is not a well understood phenomena in the high voltage world. For this reason, an aging waveform has been designed to understand what the scale of the impact of these pulses is on the paper insulation of a transformer. The times to breakdown between AC plus transients and clean AC are analysed and a clear trend is identified showing that transients are damaging to the insulation. The experimental method is will be described in detailed and also how these transients are achieved using a simple MOSFET and high frequency transformer.