Contact arrangement for vacuum switches
AssigneeSiemens Aktiengesellschaft
InventorsHeinrich Haessler, Wilfried Kuhl
Life of this patent
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Abstract
Contact arrangement for vacuum switch in which one of two contacts is movable relative to the other in the axial direction of the contacts and is designed as a recessed contact. According to the invention, a condensation plate with a diameter greater than the inside diameter at the rim of the recessed contact is provided between the other contact and its current lead. The sidewall of the recessed contact forms a guide ring for the metal vapor, a substantial part of which condenses on the condensation plate.
Claims14
In a contact arrangement for a vacuum switch, the vacuum switch comprising contacts which are movable relative to each other in their axial direction, one of said contacts having a recessed area and designed as a recessed contact having a sidewall contiguous and extending above the periphery of the recessed area a distance defining a predetermined inner height and the predetermined inner height of the sidewall being greater than a contact stroke (h) of the contacts, said sidewall partly surrounding the other contact of said contacts when the vacuum switch is open, the other contact including a protruding contact portion which is adapted to extend into the base of the recessed area to make contact upon closure of the vacuum switch and a condensation plate extending outward from a base region of the protruding contact portion and located between said other contact and its current lead whose diameter (D) is greater than the inside diameter (d) of the recessed area of said recessed contact.
Dependencies are inferred from the claim text.