Abstract: Through conductors pass through a capacitor and a grounding member. Insulating tubes cover the through conductors respectively. An insulating case is provided at one surface of the grounding member. An insulating cover is provided at an opposite surface of the grounding member. Insulating resins fill a space inside the insulating case, a space inside the insulating cover, and a space around the capacitor. The insulating case is constituted of a mixture containing polybutylene terephthalate and an inorganic substance which contains glass powder and ceramic powder. The content of the inorganic substance is set within a range of 15 wt % to 45 wt % relative to the entire quantity of the mixture.

Abstract: Through conductors pass through a capacitor and a grounding member. Insulating tubes cover the through conductors respectively. An insulating case is provided at one surface of the grounding member. An insulating cover is provided at an opposite surface of the grounding member. Insulating resins fill a space inside the insulating case, a space inside the insulating cover, and a space around the capacitor. The insulating case is constituted of a mixture containing polybutylene terephthalate and an inorganic substance which contains glass powder and ceramic powder. The content of the inorganic substance is set within a range of 15 wt % to 45 wt % relative to the entire quantity of the mixture.

Abstract: A high voltage capacitor is disclosed that comprises a grounding member (1), two through type capacitors (2 and 3), an insulating case (6) and insulating resin (71 and 72). The grounding member (1) has two raised portions (101 and 102) on which the through type capacitors (2 and 3) are secured. The insulating case (6) has two hollow cylindrical portions (61, 62) spaced apart by a distance D with their upper open ends joined to each other to form a recessed enclosure (63) in line with and following the inner diameter sections (611, 621) of the hollow cylindrical portions (61, 82) and their lower open ends fitted on the outer circumference of the raised portions (101, 102). The insulating resin (71 and 72) is provided around the through type capacitors (2 and 3) within the inner diameter sections (611, 621).