Breakdown phenomena of long gaps under switching impulse conditions time to breakdown distribution and breakdown probability: Statistical approach

Starting from experimental results on final jump and using physical interpretations of first corona and leader process, a computer aided method is proposed to determine a "limit-volt-time" curve. Furthermore, it is shown that the time to breakdown, U 50 and σU 50 can be deduced once the impulse shape applied to a given gap is known provided that one utilizes the "intrinsic probability density" concept.