ELECTRICAL BUSHING AND METHOD OF MANUFACTURE THEREOF

摘要

A cast bushing having a capacitor structure which includes concentrically positioned capacitor sections. Each capacitor section includes a spacing member which helps to maintain the distance between the conducting portions of the capacitor sections during the casting process. The spacing members consist of a tapered cylindrical non-conductive mesh around which another mesh member and a conductive foil are positioned. The diameter of the smaller opening of the tapered mesh permits the insertion of a similarly constructed but smaller diameter capacitor section inside the tapered mesh to form concentric capacitor sections. The rigidity of the tapered portion of the mesh maintains the desired distance between the conducting foils of the two concentric capacitor sections. Two-piece mandrel assemblies are used to construct each capacitor section.