Siemens Aktiengesellschaft

Siemens Energy Global Gmbh & Co. Kg

Uwe Jahnke

Frank Graskowski

Andreas Lawall

Lydia Baron

Wolfgang Guenther

Ralf-Reiner Volkmar

Ulf Schuemann

Klaus Schachtschneider

Ulf Schümann

Christian Stiehler

A vacuum interrupter includes at least one insulating body, a fixed contact, a fixed contact flange, a moving contact having a longitudinal axis of the moving contact, a moving contact flange, a moving contact bearing, and a bellows. The fixed contact is stationarily disposed in the fixed contact flange, the moving contact is moveably guided in the moving contact bearing and the moving contact is moveably secured to the moving contact flange by the bellows. The bellows is secured to the moving contact flange by a first bellows end and the bellows is secured to the moving contact by a second bellows end. An increased pressure resistance of the vacuum interrupter against ambient pressures over 1 bar is achieved by a sleeve which is secured to the moving contact against movements along the longitudinal axis of the moving contact, and which is guided through the moving contact bearing.

Vacuum interrupter

A switching contact, of a vacuum interrupter including support bodies, includes an additional support body which has the shape of a truncated cone or of a hollow truncated cone or of a partially hollow truncated cone. The additional support body is offset from a first location or region on the bottom of the contact carrier, located in the notional extension of the contact rod and inside the contact carrier, to a second location or region, located on the side of the contact plate facing the contact carrier and on the outer edge of the contact plate in relation to the first region.

Switching contact of a vacuum interrupter comprising supporting bodies

To improve the mechanical properties of a contact unit of a vacuum relay, a spring element is integrated into the contact unit. The contact unit comprises an armature, a mounting support for an insulating carrier, the insulating carrier and a switching contact. The mounting support comprises a flat bar spring such that the contact unit has an integrated spring element.

Vacuum relay with a contact unit located in a vacuum

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Berlin, Germany

Uwe Jahnke