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An internal oxidation mechanism designed to eliminate the formation of conducting carbon paths in organic insulation exposed to electric arcs has been described. Mass spectrometer data on analysis of gases formed during electrical arcing provide evidence for this explanation. Data have been presented for several additives showing the degree of effectiveness in preventing creep tracking. For optimum...
Two years ago a paper was presented at this Conference describing the development of organic insulations which will not form carbonized tracks upon exposure to surface electrical arcs. The present paper discusses in detail the proposed internal oxidation mechanism and shows that hydrated alumina compounded with organic materials in specific quantities, is wholly effective in preventing carbonization...
The susceptibility to carbon tracking upon exposure to electrical arcs has always been a fundamental weakness of organic insulations. Although recent emphasis has teen on the development of organic materials with more versatile physical characteristics and improved high-temperature properties, comparatively little work has been published on compounding materials to specifically resist tracking under...
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