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[05-06, 2002] 

Journal of Electrical Engineering, Vol 53, 05-06 (2002) 149-153

THE NOTION OF THE "EARLY STAGE OF AGEING'' INDOOR AND OUTDOOR INSULATION REGARDING SURRFACE DISCHARGES: A SHORT REVIEW

Michael G. Danikas

   Phenomena at the insulating solid/insulating gas interface are highly interesting since they may cause changes leading ultimately to a reduction of the insulating capability of the whole insulating system. The resulting flashover and/or erosion of the solid is preceded by a so-called "late stage of ageing'' and an "early stage of ageing''. It is the aim of the present contribution to particularly stress the importance of the latter, to comment upon the surface mechanisms responsible for the "early stage of ageing'' and to review the work done until now.

Keywords: early ageing, indoor insulation, outdoor insulation, surface ageing


[full-paper]


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