Asea Brown Boveri Ag

Abb Management Ag

Herbert Schifko

Piero Tecchio

Daniel Bleiker

Franz Heil

Ernst Berger

Jadran Kostovic

Sven Forss

John Ang Classon

This switching device has a contact arrangement which is equipped with erosion-resistant contacts and comprises at least one contact which moves along a central axis (2) and at least one mating contact which is provided for receiving the moving contact. One of the two contacts has a finger cage (25) which is provided with individual, sprung contact fingers (13) which are spaced apart from one another by radial slots (26) extended in the direction of the central axis (2). Means are provided which prevent the side edges (29) of the contact fingers (13) being able to touch in the region of the contact surfaces (27) in the front part of the contact fingers (13) when said contact fingers (13) are drawn together in the direction of the central axis (2) , such that welding of the edges (29) of the contact fingers (13) cannot occur.

Electrical switching device

A disconnector for a metal encapsulated, gas insulated high voltage switchgear includes a housing with at least a first and a second axis which intersect at a first angle. The disconnector also includes two contact carriers that are arranged on the first axis and are positioned between to contact carriers at an isolating distance by securing elements. The first axis and the second axis each form an axis of symmetry of the housing. The housing has four openings which are provided with flanges and which have the same diameter and centers located on one of the first and second axes, and are arranged at the same distance from the intersection point of the first and second axes.

Disconnector for a metal encapsulated, gas insulated high voltage

An isolator for a metal-encapsulated, gas-insulated high-voltage switching installation includes two contact supports and an enclosure. The enclosure has a longitudinal axis and is filled with insulating gas. The two contact supports are arranged in the enclosure. Each of the contact supports has a surface. A surface of a first one of the contact supports and a surface of the second one of the contact supports oppose each other to form opposing surfaces and define a separation that forms an isolating gap between the opposing surfaces. The isolator further includes a contact arrangement. The contact arrangement is movable along an operating axis between a connected state and a disconnected state. The contact arrangement electrically conductively shorts the separation when the contact arrangement is in the connected state. The longitudinal axis and the operating axis form a first angle with one another, and the opposing surfaces extend parallel to one another in a region of the isolating gap and are bent through a second angle with respect to the longitudinal axis.

Isolator for a metal-encapsulated, gas-insulated, high-voltage switching

A metal-encapsulated, gas-insulated switching installation is provided with at least one busbar system, the busbar system having an axis separation, and a circuit breaker, the circuit breaker being in the form of a pole and having a pole axis, the circuit breaker including at least one quenching chamber installed in a pole enclosure and at least one connection for the associated busbar system. The pole axis is arranged at a right angle to a surface of a foundation. The circuit breaker of the switching installation includes a modular circuit breaker pole. The modular circuit breaker pole includes an enclosure lower part having a first end and a second end, and at least one opening for connecting an isolator for a busbar system between the first end and the second end of the enclosure lower part, an enclosure upper part having a first end and a second end, at least one of the first end and the second end of the enclosure upper part being attachable to each of the first end and the second end of the enclosure lower part, and an enclosure cover attachable to at least one of the second end and the first end of the enclosure upper part. The enclosure lower part, the enclosure upper part, and the enclosure cover define at least part of a circuit breaker pole enclosure having a pole axis.

Metal-encapsulated, gas-insulated switching installation

A metal-enclosed, gas-insulated switching installation includes at least two busbar systems and a circuit breaker. Each circuit breaker is in the form of a pole having a pole axis and at least one extinction chamber, installed in a pole housing. The pole axes are arranged perpendicularly to a foundation and are located in a first plane. The switching installation includes an electrically conductive connection, extending along a connecting axis, of the voltage-carrying extinction chamber of the circuit breaker to each of the busbar systems and an isolator arranged in the connection between the busbar and the circuit breaker pole.

Metal-enclosed gas-insulated switching installation

The cable connection is provided for a metal-encapsulated, gas-insulated, high-voltage switching installation. It has a connection enclosure (23) which surrounds connecting parts which are connected to the active parts of the gas-insulated, high-voltage switching installation, and cable connection encapsulation (18) which is connected to the connection enclosure (23) and surrounds a cable termination (14) with an end bolt (15). In addition, it has an electrically conductive connecting piece which is inserted between the end bolt (15) and the connecting parts. It is intended to create a cable connection for a metal-encapsulated, gas-insulated, high-voltage switching installation, which cable connection makes it possible to fit and remove the high-voltage cable easily and quickly and makes it possible to ground this cable reliably and in a manner which can be installed easily. This is achieved in that the electrically conductive connecting piece is constructed such that it can easily be removed, in that, after removal of the connecting piece, a separation which is designed as an isolating gap is produced between the end bolt (15) and the connecting parts, and in that a grounding device (67) which can easily be installed is provided in this isolating gap, for reliable grounding of the end bolt (15).

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Glattbrugg, Switzerland

Herbert Schifko