Application of Series Resonance with Adjustable Frequency to Transformer in AC Withstand Voltage Test

Compared with the traditional test method,AC withstand voltage test for large and medium capacity transformer is carried out by series resonance with adjustable frequency.The results show that the technique of series resonance with adjustable frequency has the advantages of lower electric power supply,small size for device,not damaging the transformer.In addition,it can solve some problems,which can not handled by the traditional test technique.