Patent ID: 7709738
Filing Date: 2010-05-04
Classification: H01R,H02G,Y02E

Abstract:
1. An electrical bushing enabling a connection to be made at ambient temperature to a superconductor element situated in an enclosure at cryogenic temperature comprising: an electrical bushing passing in succession through an enclosure at intermediate temperature between ambient temperature and cryogenic temperature; and an enclosure at ambient temperature, said bushing having at least a central electrical conductor surrounded by an electrically insulating sheath, wherein an electrically conductive screen connected to ground potential surrounds said insulating sheath over a section extending from the end of the bushing that is in contact with the enclosure at cryogenic temperature at least as far as the junction between the enclosure at intermediate temperature and the enclosure at ambient temperature and wherein the insulating sheath includes, at least one of the two ends of said section, electric field deflector means with the end of the insulating sheath of said section adjacent to the enclosure at cryogenic temperature being flared in shape, and covered in said metal screen.