Siemens Aktiengesellschaft

Siemens Energy Global Gmbh & Co. Kg

Maschinenfabrik Reinhausen Gmbh

Siemens Aktiengesell Schaft

Andreas Lawall

Frank Graskowski

Wolfgang Albrecht

Werner Hartmann

Roman Renz

Christian Hammer

Sylvio Kosse

Andreas Stelzer

Joerg Teichmann

Norbert Wenzel

Lydia Baron

Christian Pircher

Andreas Sachsenhauser

Uwe Jahnke

Christian Stiehler

Christian Kotz

Sebastian Rehkopf

Klaus Schachtschneider

Ulf Schuemann

Rainer Frotscher

Ulf Schümann

Konrad Raedlinger

Angelika Hartmann

Silvio Kosse

Christoph Heynen

Konrad RÄDLINGER

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 vacuum interrupter tube contains at least one insulating body, a fixed contact, a fixed contact flange, a moving contact having a longitudinal axis, a moving contact flange, and a bellows. The fixed contact is stationarily arranged in the fixed contact flange. The moving contact is moveably guided 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. Therein the vacuum interrupter tube is protected against the deformation of at least one of the fixed contact flange and the moving contact flange due to an ambient pressure of the vacuum interrupter tube of over two bar by a stiffened fixed contact flange and/or a stiffened moving contact flange.

Overpressure-resistant vacuum interrupter tube

A ceramic insulator for vacuum interrupters extends along a longitudinal extent and forms a cavity in said longitudinal extent. The cavity has a first opening on a first end of the longitudinal extent and a second opening on a second end of the longitudinal extent. The openings are designed so that they can be sealed in a gas-tight manner using appropriate connections. The sealed first opening is designed to guide at least one fixed contact into the cavity, and the sealed second opening is designed to guide at least one moving contact into the cavity. The ceramic insulator has, on an inner face of the cavity, one or multiple electrically conductive discharge path interrupters extending perpendicularly to the longitudinal extent of the ceramic insulator.

Ceramic insulator for vacuum interrupters

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

A tap changer for uninterrupted switching between winding taps of a tapped transformer has first and second load branches for each phase to be switched. Each load branch has a main vacuum switch and in parallel thereto a series connection of a switch-over resistance and a respective auxiliary vacuum switch. First and second vacuum switching tubes each contain the main vacuum switch of the respective first and second load branches and the auxiliary vacuum switch of the other of the load branches.

Tap changer and vacuum interrupter for a tap changer of this kind

The invention relates to a tap changer having vacuum interrupters for switching over between winding taps of a tapped transformer without interruption. The tap changer according to the invention having vacuum interrupters is based on the general idea of combining the functionalities of at least one conventional vacuum switching contact which switches under load and a further mechanical switching means according to the prior art in just one single vacuum interrupter with two separately moving contact systems.

Tap changer with vacuum interrupters

The invention relates to a tap changer for the interruption-free switchover between winding taps of a tap-changing transformer. Furthermore, the present invention relates to a novel vacuum interrupter which is particularly suitable for such a tap changer. The tap changer according to the invention is based on the general concept of combining in each case one main contact (V1) and one mechanical switching means (U1), connected in series therewith, of a first load branch and an additional resistive contact (V3) of a second load branch in only a single vacuum interrupter () with a common housing (). The vacuum interrupter () according to the invention is furthermore based on the general inventive concept of replacing the functionalities of two required vacuum interrupters in accordance with the prior art and an additional mechanical switching means with a single vacuum interrupter () according to the invention by virtue of combining the design of a vacuum interrupter () with a plurality of moveable contact systems (I, II, III), which are arranged in separate vacuum interrupter chambers () which are sealed with respect to one another.

Tap changer and vacuum interrupter for such a tap changer

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Berlin, Germany

Andreas Lawall