Patent ID: 11942742
Assignee: HITACHI ENERGY LTD
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  F | IPC H

Claim 8:
9. A method of producing a bushing for a high voltage application, the method comprising:
providing a main electrical conductor in a through hole of an electrically insulating body; and
establishing an electrical connection between an electrically conductive foil and the main electrical conductor using a potential electrical conductor;
mechanically connecting the potential electrical conductor to the main electrical conductor;
arranging the foil to encircle the through hole;
winding at least one sheet of an insulating material over the foil; and
impregnating the body to form a condenser core wherein the mechanical connection comprises connecting the potential electrical conductor to the main electrical conductor using a fastening device; and a washer, the fastener pressing the washer such that the washer presses the potential electrical conductor against the main electrical conductor; and the washer is countersunk.