Patent ID: 6747207
Filing Date: 2004-06-08
Classification: H02B,Y10T

Abstract:
A bushing for gas-insulated metal-clad electrical switchgear accommodated inside a tank, including a conductive busbar extending along an axis and surrounded over a portion of its length by an insulative sleeve, and a substantially cylindrical metal jacket which contains said gas and surrounds another portion of the length of said busbar, one end of said jacket being open so that it can be connected and sealed to said tank, and another end of said jacket being closed by said sleeve, which has an inside face constituting its end surface in contact with said gas contained in said jacket, which bushing includes a conductive material annular member surrounding said jacket and situated at substantially the same level as said inside face of said sleeve along said axis of said conductive busbar and includes a cap surrounding said jacket and adapted to form with said jacket a closed space delimited by said annular member at one end.