Patent ID: 6255589
Filing Date: 2001-07-03
Classification: H01B

Abstract:
A hermetically sealed current feedthrough for gas-insulated outdoor electrical gear, the feedthrough being intended more particularly to provide connection to a bare conductor of a piece of gear housed inside metal cladding including a wall provided with an opening designed to put a first conductive element of the gear into connection with one end of a second conductive element housed axially inside the feedthrough, comprising:a metal link and screen piece of cylindrical appearance that is held coaxially about the second conductive element by a body of molded insulating material covering it in part and forming a plug that is impermeable to gas, and wherein said link piece is terminated by a first cylindrical portion projecting from the body, with said piece being welded to a periphery of the opening via an end of said first cylindrical portion;wherein the first circular cylindrical portion whose diameter corresponds to a diameter of the opening for the connection of the conductive element of the gear, at the periphery of which opening it is welded, is extended in a form of an electric field control screen by a portion of progressively tapering diameter situated remote from an end of the first cylindrical portion via which the piece is welded, and itself extended by a second cylindrical portion of diameter lying between the diameter of the welded first circular cylindrical portion and a diameter of the conductive element of the feedthrough, and in which the second cylindrical portion is terminated by a flared portion.