Electrical insulation body
AssigneeBBC Brown, Boveri & Company, Limited
InventorHelmut Britsch
Life of this patent
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Abstract
Provided is an electrical insulation body useful in electrical installations operated with SF.sub.6 as a quenching and/or insulating gas. The insulation body is comprised of a thermosetting resin matrix and a mineral filler of predominantly quartz powder and from about 5 to 50 percent by weight of the mineral filler of a second mineral powder component for increasing resistance to SF.sub.6 cleavage products, which second component comprises at least one alkaline earth metal carbonate.
Claims10
An electrical insulation body in an environment of SF.sub.6 gas comprising a matrix of a thermoset resin and a mineral filler, with the mineral filler comprising predominantly quartz powder and from about 5 to 50 percent by weight of said mineral filler of a second mineral powder component for increasing resistance to SF.sub.6 cleavage products, which component comprises at least one alkaline earth metal carbonate.
An electrical installation including at least one electrical insulator in contact with a sealed environment containing gaseous sulfur hexafluoride, said insulator comprising a matrix of a thermoset resin and a mineral particulate filler distributed homogeneously throughout the matrix, the improvement which comprises said mineral particulate filler in the matrix comprising a predominant amount of quartz powder and from about 5 to 50 percent by weight, based upon the total weight of said mineral particulate filler, of a second mineral powder which is comprised of at least one alkaline earth metal carbonate.
Dependencies are inferred from the claim text.