Load range extension methods for lightning impulse testing with high voltage impulse generators

摘要

The limitations for lightning impulse testing according to the IEC 60060-1 standard in regards of rise time and overshoot are identified and discussed. The different load range extension methods for lightning impulse testing with impulse voltage generators are introduced, their pros and cons are discussed and underlined by examples. Possible limitations for power transformer testing are explained. The impact of the revised lightning impulse evaluation, based on the revised IEC 60060-1, on the load range extension efficiency is shown.