Siemens Aktiengesellschaft

Siemens Aktiengeselleschaft

Heiner Marin

Volker Lehmann

Hold Dienemann

Dieter Noack

Ruediger Hess

Rainer Bitsch

Thomas Chyla

Ingolf Reiher

Helmut Beier

Harald Kurzmann

Alfred Muller

Peter Huhse

Friedrich Lobner

Ralf Bergmann

Rudiger Hess

Marion Henry

In a high-voltage circuit breaker having two arcing contacts arranged coaxially relative to one another and having an insulating nozzle which in the closed state is blocked by a first arcing contact the first arcing contact has a shaft having a greater diameter and an end element having a smaller diameter, the shaft blocking a through-channel of the insulating body. The through-channel is cylindrical along a length that is smaller than the length of the end element. As a result, the extinguishing gas starts to flow when the end element is pulled back into the through-channel.

High-voltage circuit breaker having an insulating nozzle

In a high voltage circuit breaker having a contact system comprising a contact driven by a switch mechanism and a counter-contact opposite the contact and driven by an auxiliary gear, the parallel current path leading over the auxiliary gear is interrupted by using an insulation part between the counter-contact and a second terminal of the high voltage circuit breaker.

High voltage circuit-breaker with a counter-contact which can be actuated

A high-voltage circuit breaker is described having arcing contacts, which can be driven in opposite directions, as well as corner gears that are coupled, via a driving rod, with the driven insulating nozzle surrounding the arcing contacts, with the corner gears being designed as a lever mechanism using a two-armed control lever. The one end of the control lever is shaped like a fork, with a journal that is attached to the driving rod engaging with this end. The other end of the control lever is coupled, via a reciprocating element, with the head piece of the second arcing contact, which is driven in the opposite direction.

High voltage circuit breaker with two arcing contacts which can be actuated in an opposite direction

In a high-voltage circuit-breaker having arcing contact pieces that are movable relatively to each other, and an axially movable insulating nozzle, provision is made for an axially displaceable field electrode on the side lying opposite the drive. Used as an auxiliary drive for the field electrode is a first coupling shank which is connected to the axially movable insulating nozzle and which acts upon a gearing composed of a swivelling lever with a control pin a connecting link guide and a second coupling shank connected to the control pin and to the field electrode. For additionally driving the second arcing contact piece surrounded by the field electrode, the first coupling shank, with the assistance of a journal, also acts upon a deflection gear composed of a two-armed lever, having a fork-like design at one end for the coulisse-type guidance of the journal, and a pendulum element at the other end of the lever coupled to the second arcing contact piece.

High-voltage circuit-breaker having an axially displaceable field electrode

Puffer-type circuit breaker and nozzle emitting gas with coaxial

High-voltage power switch with a cooling device for cooling the

Electric high-tension circuit breaker

High-voltage power switch

A high-voltage circuit breaker has a metallic housing. The contact member assembly is held by insulating supports, and has a fixed contact member and a movable contact member. The movable contact member is capable of being driven via an operating lever by means of a drive rod. The drive rod extends through one of the insulating supports. To seal the insulating support from hot quenching gases when the switch is actuated, an insulating disk sealingly surrounds the drive rod and is float-mounted on the insulating support. This allows for compensation of radial movements of the drive rod.

Electric high-voltage circuit breaker

A high-voltage compressed-gas circuit breaker has contact plates with a contact face for the incoming cables. The position of these contact faces and the attachment bores on the contact faces for the connection of cables will vary depending on the form of installation given in the switching equipment. The circuit breaker has contact faces which are formed as contact parts which are separate from the terminal plates. On both contact parts, bores are provided for connecting the contact part and the terminal plate to each other, these bores protruding beyond the outside diameter of the interrupter unit on which the terminal plate is applied. The bores make possible a reversal of the contact face by 180.degree..

High-voltage compressed-gas circuit breaker

A high-voltage compressed-gas circuit breaker having terminal plates with a contact face for incoming cables. The position of these contact faces and the attachment devices on the contact faces for the connection of the cables varies according to the form of installation given in the switching equipment. The contact faces are formed as a separate part from the terminal plate. On both the separate part and the terminal plate, bores for connection of the part and the plate are provided which do not affect the sealing by the terminal plates of the interior of the interrupter unit at its outer end faces. The bores permit an attachment of the separate part to the contact face in either a first position, or a second position which is rotated by 90.degree. from said first position.

In a contact arrangement for air-blast switches, a tubular element consisting of ferromagnetic material (the inner wall surface of which is conical and continues the contour of a nozzle aperture) is provided with a layer of graphite. The layer is formed by one or more bushings which are force fitted into the tubular element. The desired conical inner contour can be produced by machining initially cylindrical inner surfaces after mounting the bushings within the tubular element.

Contact arrangement for air-blast switches with a tubular element of

An electric gas blast circuit breaker is disclosed which has two stationary contact pieces. A switching unit is movable between closed and open positions for electrically bridging the contact pieces in the closed position and for electrically disconnecting the contact pieces in the open position whereby an arc develops when the switching unit is moved to the open position. A gas blast device blasts a stream of gas through the arc when the switching unit is moved to the open position. The switching unit includes a supporting body and a slide-contact ring made of an arc-resistant material. The ring slideably contacts one of the contact pieces in the closed position and is mounted on the supporting body so as to be electrically insulated therefrom. A plurality of elongated contact elements are disposed in the supporting body for electrically connecting the contact pieces when the switching unit is in the closed position. There is provided an electrical connection between at least one of the contact elements and the slide-contact ring when the switching unit is in the closed position and also when it moves into the open position and continuously in all operating positions thereof.

Electric gas blast circuit breaker

An electrical contact construction for air-blast circuit breakers, particularly blast-piston or 'puffer' type breakers, which subject the arc drawn during current interruption to a compressed-gas blast as well as a magnetic-force effect which lengthens the arc. To increase the interruption capacity of such breakers, and particularly to improve arc behavior during the interruption process, a tubular member is disposed within the interior spaces of the tubular contacts of such a breaker in which the switching gases flow. The member has an inner surface which is conically shaped and is matched to the contour of openings provided in nozzle members disposed at the end faces of the tubular contacts to improve gas flow.

Electrical contact construction for air-blast circuit breakers

The circuit breaker contains a contact system and a blast device. The blast device produces a flow of quenching gas required for the quenching of the switch-off arc in the contact system. The blast device, which is assigned to the contact system, includes an annular piston and a movable cylinder. The piston is sealed via a first sealing ring against the cylinder and via a second sealing ring of different diameter against a movable cylindrical bridging element of the contact system. The circuit breaker also contains a one-way-action valve which is closed in the compression phase and opened in the intake phase. The valve is formed by the two sealing rings which are located in the same plane. They are arranged with axial play in annular grooves which are formed in the piston in flow paths for the quenching gas. Between the sealing rings is arranged at least one spacer element. The rings are supported in a way so that they are movable transversely to the main axis of the piston.

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Berlin, Germany

Heiner Marin