Abstract: An electrical capacitor is built into a metallic housing, the capacitor having end contact layers and being fixed in the housing with the assistance of pressure ribs arranged at an outside edge of an insulating cap. The insulating cap has an inner space in which a terminal element is arranged. The other terminal element is insulated from the differently polarized end contact layer by a connector or sleeve arranged in the insulating cap. The housing the filled with an insulating oil up to a defined level. Aeration holes are arranged at an upper side of is insulating cap to prevent gas bubbles from arising under the insulating cap.

Abstract: An impregnated, wound capacitor comprises dielectric strips (1) which consists at least partially of plastic foils swelled by the impregnant. The electrodes of regenerably thin metal layers are connected at the end faces (S, S') of the capacitor coil with end contact layers. Impregnation holes (L) are arranged in the dielectrically active part of the coil such that the maximum spacing r, between successive holes on the capacitor surface, is equal to R=r .sqroot.3, where r is the impregnation reach.