Abb Research Ltd.

Marc Mollenkopf

Lukas Zehnder

Martin Lakner

Jean-Claude Mauroux

Daniel Chartouni

Jochen Kiefer

Thomas Schoenemann

Leopold Ritzer

Olaf Hunger

Markus Keller

Guido Meier

Peter Unternaehrer

Thomas Shoenemann

Sanel Pidro

The high-voltage system has at least one feed line and at least one high-power circuit breaker, the at least one feed line having a longitudinally extended feed line inner conductor and a feed line outer conductor surrounding the feed line inner conductor, and the high-power circuit breaker having a longitudinally extended circuit breaker inner conductor and a circuit breaker outer conductor surrounding the circuit breaker inner conductor in the form of a housing, and the inner conductors and the outer conductors being electrically conductively connected to one another. At least one heat pipe is provided for the purpose of dissipating thermal energy from the circuit breaker inner conductor. The heat pipe interacts with a cooling gas flow extending along the circuit breaker inner conductor.

High-voltage system and high-power circuit breaker with cooling

An exemplary isolating tube, and production method thereof, includes a mechanically load-bearing plastic tube composed of a fiber-reinforced polymer for use in a cooling element which can be loaded with high voltage, during whose operation the isolating tube forms an electrical isolation gap and in the tube interior carries an agent which flows as a liquid and/or vapor. The isolating tube can have a diffusion barrier which is held coaxially by the plastic tube. Such an isolating tube can be produced using an exemplary novel method for production.

Isolating tube for a cooling element which can be loaded with high voltage

The shaft includes two electrically conducting connecting pieces (), which can be connected to different electric potentials, and also an insulating tube (), which can be subjected to torsional loading. The two connecting pieces () are respectively fastened to one of the two ends of the insulating tube (). In order that the shaft can also transmit great torques, the following means are provided for fastening at least one of the two connecting pieces (): An adhesive joint (), which is formed by a cone () formed into one end of the insulating tube () and made to run from the circumferential surface () to the inner surface () of the insulating tube () and also by a mating cone () formed into the at least one connecting piece (), and by a gap () formed by the cone () and mating cone () and filled with adhesive. Alternatively, the fastening means may also include an embedding, which has a portion of the at least one connecting piece, made to extend in the direction of the axis of the insulating tube, as the part to be embedded, and the end portion of the insulating tube produced by a casting process, as the embedding body.

Shaft, method for producing it and device for carrying out the method

In order to dissipate heat losses from the inner conductor (), the circuit breaker () having an elongated inner conductor () and an outer conductor () which surrounds the inner conductor () like a housing has at least one heat pipe () which extends from the inner conductor () to the outer conductor () and has an insulating hollow body () in order to form an electrical insulating gap (). The heat pipe () advantageously has a flexibly deformable section (). The heat pipe () can run in a supporting insulator () which supports the inner conductor (). In addition to a working medium, the heat pipe () advantageously also contains an auxiliary gas which results in an enhanced dielectric strength at low temperatures.

High voltage circuit breaker with cooling

Growing community of inventors

Schoenenwerd, Switzerland

Marc Mollenkopf