ELECTRICAL INSULATING OIL COMPOSITION HAVING EXCELLENT PROPERTIES IN WIDE TEMPERATURE RANGE

摘要

The present invention provides an electrical insulating oil composition that can maintain breakdown voltage at a high level in a wide temperature range of −50° C. to 30° C., extremely unlikely precipitates as crystals in particular at −50° C., and has excellent properties both at ordinary temperature and low temperature. The insulating oil composition comprises diarylalkanes having 14 carbon atoms (C14) and having 15 carbon atoms (C15), wherein the C14 diarylalkane is 1,1-diphenylethane or a mixture of 1,1-diphenylethane and benzyltoluene and the C15 diarylalkane is 1-phenyl-1-methylphenylethane.

主权项

1. An electrical insulating oil composition comprising diarylalkanes having 14 carbon atoms (C14) and having 15 carbon atoms (C15), wherein the C14 diarylalkane is 1,1-diphenylethane or a mixture of 1,1-diphenylethane and benzyltoluene and the C15 diarylalkane is 1-phenyl-1-methylphenylethane.