Abstract:For various types of epoxy resin and various kinds of ion-exchange on the mica surface the electrical tree propagation in the mica epoxy interface has been investigated. Apart from statistical scattering a significant spread by more than one order of magnitude in tree propagation time was found. Furthermore, the optical appearance of the corresponding trees was observed. Branch-and bush-type trees were found yielding shorter or longer tree propagation times, respectively. The observed spread is ascribed to the… Show more
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