External Partial Discharges of Pertinax in Air

D.D. Dimitriadou, G.K.Soulinaris, P.T. Tsarabaris, C.G. Karagiannopoulos, and P.D. Bourkas (Greece)


Pro-Breakdown phenomena, inception time and duration of potential steps, partial discharges.


In this work, high voltage pulses of the form 1.2/50μs were applied on a metal tip-solid dielectric- metal plate combination in the air. The recording of partial discharges in air is a difficult process because the molecules of gasses are volatile and agile. Furthermore, the measurement of the inception time and the duration of potential steps is a difficult process too, because partial discharges are exceptionally short phenomena.

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