Voltage dividing capacitor

A voltage dividing capacitor arranged parallel to a vacuum interrupter comprising:

• a capacitor series configured by a plurality of capacitor elements being connected and fixed in series, wherein each of the capacitor elements has a dielectric substance between a pair of conductors and a cylindrical molded portion at an outer circumferential side of the capacitor element, the capacitor series as a whole having a long narrow cylindrical shape;
• a fixed supporting unit fixedly supporting one end of the capacitor series;
• a movable supporting unit movably supporting the other end of the capacitor series in a longitudinal direction of the capacitor series, the movable supporting unit being provided with a disk-shaped movable member and an elastic member;
• and
• an insulation tube secured to the movable supporting unit, the insulation tube having a substantially C-shaped cross section into which at least the disk-shaped movable member of the movable supporting unit is fitted, wherein a length of the insulation tube is set to such a length that a tip end of the insulation tube does not protrude from an end surface, on a fixed supporting unit side, of the molded portion of a first capacitor element that is positioned closest to the movable supporting unit.