Siemens Aktiengesellschaft

Siemens Energy Global Gmbh & Co. Kg

Maschinenfabrik Reinhausen Gmbh

Joerg Teichmann

Wolfgang Albrecht

Werner Hartmann

Christian Hammer

Roman Renz

Sylvio Kosse

Andreas Stelzer

Andreas Lawall

Norbert Wenzel

Radu-Marian Cernat

Christian Pircher

Andreas Sachsenhauser

Thomas Chyla

Lutz-Ruediger Jaenicke

Bernd Kruska

Michael Bartz

Christian Kotz

Sebastian Rehkopf

Rainer Frotscher

Frank Reichert

Helmut Holler

Achim Von Seck

Stefan Giere

Ulf Heinrich

Caroline Orth

Andreas Marth

Christoph Roehling

Arkadius Peter Szepanski

Reinhard Goehler

Konrad Raedlinger

Subodh Kale

Gunther Krausse

Claude Proste

Beat Schmied

Silvio Kosse

Christoph Heynen

Stephan Wethekam

Prosper Hartig

Frank Richter

Jan Weisker

Frank Backe

Amit Shende

Srinivas Gopa

A separating wall for dividing a heating volume of a power circuit into a first sub-volume and a second sub-volume. The separating wall is formed with at least one wall opening which allows a flow of gas between the sub-volumes. The wall opening has an aerodynamically active opening surface based on a pressure difference between a pressure in the first sub-volume and a pressure in the second sub-volume.

Dividing a heating volume of a power circuit

An arrangement and a method for switching high currents include at least one vacuum switching path and at least one rated-current contact switching path. The at least two switching paths are electrically connected in parallel. One current path for a rated current is routed over at least one rated-current contact of said rated-current contact switching path, and a parallel current path for a short-circuit current is routed over at least one contact of a vacuum tube of the vacuum switching path.

Arrangement and method for switching high currents in high-, medium- and/or low-voltage engineering

An arrangement and a method have precisely one resistor stack for switching high voltages. The arrangement contains a switching device that has two contact devices, which are arranged in an insulator. The contact devices are separated from each other by a separation path, wherein the separation path can be bridged by a movable contact piece. One contact device is in contact with the resistor stack in a common housing. The common housing is formed by a direct coating of the resistor stack and the insulator.

Arrangement and method for switching high voltages having a switching device and precisely one resistor stack

A direct-current switching device switches direct currents, in particular direct currents in the kiloampere range. The switching device contains a switching unit, a resonant circuit, and an overvoltage arrester. During the switching off of the switching unit, the resonant circuit produces an oscillating resonant current, which is superposed with the direct current still flowing through the switching unit during the switching off of the switching unit. Accordingly, connected in series with the switching unit, hereinafter referred to as the first switching unit, is a second switching unit, the switching behavior of which differs from the switching behavior of the first switching unit, and the resonant circuit and the arrester lie electrically in parallel with the series connection.

Direct-current switching device

A damping configuration for an oscillatably mounted, electrical energy transmission device includes a supporting frame which is connected to stationary abutments through a plurality of damping elements. A group of first and second damping elements which have damping rates dimensioned so as to differ from one another and which act in parallel, connect the supporting frame to the abutments. Favorable damping of both weaker and stronger movements, for example caused by an earthquake, is ensured due to a combination of damping elements having differently dimensioned damping rates.

Damping arrangement for an oscillatably mounted electrical energy transmission device

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

Growing community of inventors

Dallgow-Doeberitz, Germany

Joerg Teichmann