Stationary Induction Apparatus

摘要

The invention provides a stationary induction apparatus excellent in core vibration damping, being capable of realizing reduction in core excitation-noise. The stationary induction apparatus according to the invention includes a core made up of plural of core-legs formed by lamination of electromagnetic steel sheets, and a core-yoke formed by lamination of electromagnetic steel sheets to join the plural core-legs together; a core-tightening clasp for tightening a joint between the core-yoke and the core-legs, in the direction of the lamination of the electromagnetic steel sheets, to be secured, a winding, a tank, and an insulating sheet disposed between the core-tightening clasp and the core-yoke. Further, a concave hollowed-out part or a notched part is provided on the insulating sheet, positioned at a joint between the core-yoke and the core-leg, and a vibration insulator is disposed in the concave hollowed-out part or the notched part.

主权项

1. A stationary induction apparatus comprising:
a core comprising a plurality of core-legs formed by lamination of electromagnetic steel sheets, and a core-yoke formed by lamination of electromagnetic steel sheets to join the plurality of core-legs together; a core-tightening clasp for tightening a joint between the core-yoke and the core-leg, in the direction of lamination of the electromagnetic steel sheets to be secured; a winding; a tank; and an insulating sheet disposed between the core-tightening clasp and the core-yoke, wherein a concave hollowed-out part or a notched part is provided on the insulating sheet, positioned at the joint between the core-leg and the core-yoke, and a vibration insulator is disposed in the concave hollowed-out part or the notched part.