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Thermal Erosion of Electrical Insulating Materials

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3 Author(s)
Billings, M.J. ; British Oxygen Company, Crawley, Sussex, England ; Warren, L. ; Wilkings, R.

The erosion of synthetic insulating materials by surface discharges constitutes an important problem in the application of these materials for high-voltage outdoor applications. A method of erosion testing is described that simulates the heat flux from surface discharges by radiant energy from a thermal imaging source. This permits accurate measurement of erosion. A theory of erosion is developed that is found to agree well with experiments performed on several cycloaliphatic epoxy resin systems.

Published in:

Electrical Insulation, IEEE Transactions on  (Volume:EI-6 ,  Issue: 2 )