Inception and growth of treeing in polar dielectrics

O. S. Gefle, S. M. Lebedev, Y. P. Pokholkov, D. P. Agoris, I. Vitellas

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The results of study of a tree inception and growth in polar dielectrics with amorphous and cross-linked structure in the divergent field under AC voltage in visible and IR spectra are represented in this paper. It is determined that the treeing inception and growth processes in polar dielectrics are accompanied by stepwise changes of the dielectric surface temperature. These temperature changes correspond to the induction stage, the growth stage and pre-breakdown stage. Transition from previous stage to next one is accompanied by the increase in the local temperature difference on the dielectric surface by a factor of 1.5-2.0. A new model of the individual diagnostics of the main characteristics of the treeing process and the remaining lifetime for polar dielectrics was suggested on the basis of temporal-temperature analysis of the dielectric aging process.

Original languageEnglish
Title of host publicationProceedings of the International Symposium on Electrical Insulating Materials
Number of pages4
Publication statusPublished - 2005
Event2005 International Symposium on Electrical Insulating Materials, ISEIM 2005 - Kitakyushu, Japan
Duration: 5 Jun 20059 Jun 2005


Other2005 International Symposium on Electrical Insulating Materials, ISEIM 2005

ASJC Scopus subject areas

  • Engineering(all)
  • Materials Science(all)

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