Abstract: A high-voltage switch has a metal container filled with insulating gas, and a quenching chamber installed in the container. The quenching chamber contains a housing which is aligned along an axis, an arcing contact arrangement which is held in the housing, an exhaust volume which is bounded by the housing, and an outlet channel which is passed through the wall of the housing for exhaust gases. The outlet channel opens with a mouth section which is aligned predominantly axially into the container. The mouth section is bounded on the inside by a tubular section of the housing and on the outside by a tubular housing attachment which surrounds the housing section at a distance from it. An electrically shielded edge which is passed in an annular shape around the axis is arranged on one end face of the housing attachment on which edge a flow, which emerges from the outlet channel of the exhaust gases is detached from the housing attachment.

Abstract: The disclosure relates to an electrical switching device, e.g., a generator circuit breaker, and to a method for improved switching-gas cooling. Gas jets are formed by a nozzle body in the exhaust area, are directed against a baffle wall and are swirled. The baffle wall is a component of the switching chamber enclosure and has a high thermal capacity and/or thermal conductivity, so that the switching gas vortices produce a highly efficient switching gas cooling on the baffle wall by turbulent convection. Exemplary embodiments relate inter alia to the design of the baffle wall and of the nozzle body. Advantages include: protection of the switching chamber enclosure against hot gases, improved switching gas cooling, and increased breaking capacity.

Abstract: A circuit breaker and a switching chamber are disclosed which include a switching chamber housing composed of electrically conductive material, which surrounds an erosion volume and has an axially directed outlet which connects the erosion volume to an outlet opening on the outer face of the switching chamber housing, or which has at least one radially directed outlet. The outlet can include an insert, which is located in an aperture in the switching chamber housing and which is composed of electrically insulating material. A connecting stub surrounds an outlet channel and projects beyond the outer face of the switching chamber housing. A collar projects outward and rests on the inner face of the switching chamber housing. The aperture is located in a depression on the outer face of the switching chamber housing, such that the triple point where the switching chamber housing meets the insert is shielded.

Abstract: An exemplary circuit breaker has in an enclosure filled with an insulating gas at least one interrupting chamber extending along a longitudinal axis. The interrupting chamber can be configured radially symmetrically and contains an arcing volume and at least two associated arcing contacts. The arcing volume is actively connected to at least one exhaust having an exhaust volume. The exhaust is constructed for cooling hot gases generated during breaking operations and is connected to a volume of the interrupting chamber. The breaking capacity of this circuit breaker can be increased significantly and the exhaust can be constructed in a comparatively simple and cost effective manner. This can be achieved by providing in the area of the exhaust at least one forcibly created recirculation area which increases the flow resistance of the hot gases.

Abstract: A high-voltage switch has a metal container filled with insulating gas, and a quenching chamber installed in the container. The quenching chamber contains a housing which is aligned along an axis, an arcing contact arrangement which is held in the housing, an exhaust volume which is bounded by the housing, and an outlet channel which is passed through the wall of the housing for exhaust gases. The outlet channel opens with a mouth section which is aligned predominantly axially into the container. The mouth section is bounded on the inside by a tubular section of the housing and on the outside by a tubular housing attachment which surrounds the housing section at a distance from it. An electrically shielded edge which is passed in an annular shape around the axis is arranged on one end face of the housing attachment on which edge a flow, which emerges from the outlet channel of the exhaust gases is detached from the housing attachment.

Abstract: The disclosure relates to an electrical switching device, e.g., a generator circuit breaker, and to a method for improved switching-gas cooling. Gas jets are formed by a nozzle body in the exhaust area, are directed against a baffle wall and are swirled. The baffle wall is a component of the switching chamber enclosure and has a high thermal capacity and/or thermal conductivity, so that the switching gas vortices produce a highly efficient switching gas cooling on the baffle wall by turbulent convection. Exemplary embodiments relate inter alia to the design of the baffle wall and of the nozzle body. Advantages include: protection of the switching chamber enclosure against hot gases, improved switching gas cooling, and increased breaking capacity.

Abstract: The invention relates to an improvement to the thermal load capacity of generator switches (20, 21, 22). As is known, radiation plates (5, 50, 51, 52) are used between generator switches (20, 21, 22) for different phases (R, Y, B) for convective dissipation of radiated heat from adjacent encapsulation side walls (30b). According to the invention, in the vicinity of the encapsulation cover (3a) of a generator switch (20, 21, 22), the radiation plate (5, 50, 51, 52) has at least one angled metal sheet (50a) which is used to guide at least one air flow element (9) of the rising air flow (9) in the direction of the encapsulation cover (3a) and in order to direct the flow along the encapsulation cover (3a).

Abstract: An exemplary circuit breaker includes at least one arcing chamber that is filled with isolating gas, extends along a longitudinal axis, is designed to be essentially radially symmetrical, contains an arc area and has at least two power contact pieces. At least one of the power contact pieces is in the form of a moving or stationery tubular hollow contact, which is provided for dissipating hot gases from the arc area into a concentrically arranged exhaust body. A deflection device, which interacts with at least one opening in the hollow contact, is arranged on the side of the hollow contact facing away from the arc area, and radially deflects hot gases into the exhaust volume, which is connected through at least one second opening to an arcing chamber volume. An increased disconnection rating is achieved by providing at least one intermediate body between the hollow contact and the exhaust body.

Abstract: An exemplary circuit breaker has in an enclosure filled with an insulating gas at least one interrupting chamber extending along a longitudinal axis. The interrupting chamber can be configured radially symmetrically and contains an arcing volume and at least two associated arcing contacts. The arcing volume is actively connected to at least one exhaust having an exhaust volume. The exhaust is constructed for cooling hot gases generated during breaking operations and is connected to a volume of the interrupting chamber. The breaking capacity of this circuit breaker can be increased significantly and the exhaust can be constructed in a comparatively simple and cost effective manner. This can be achieved by providing in the area of the exhaust at least one forcibly created recirculation area which increases the flow resistance of the hot gases.

Abstract: An exemplary circuit breaker includes at least one arcing chamber that is filled with isolating gas, extends along a longitudinal axis, is designed to be essentially radially symmetrical, contains an arc area and has at least two power contact pieces. At least one of the power contact pieces is in the form of a moving or stationery tubular hollow contact, which is provided for dissipating hot gases from the arc area into a concentrically arranged exhaust body. A deflection device, which interacts with at least one opening in the hollow contact, is arranged on the side of the hollow contact facing away from the arc area, and radially deflects hot gases into the exhaust volume, which is connected through at least one second opening to an arcing chamber volume. An increased disconnection rating is achieved by providing at least one intermediate body between the hollow contact and the exhaust body.

Abstract: This circuit-breaker has at least one arcing chamber which is filled with isolating gas, extends along a longitudinal axis, is designed to be essentially radially symmetrical, contains an arc area and has at least two power contact pieces. At least one of the power contact pieces is in the form of a moving or stationery tubular hollow contact, which is provided for dissipating hot gases from the arc area into a concentrically arranged exhaust body. A deflection device, which interacts with at least one opening in the hollow contact, is arranged on the side of the hollow contact facing away from the arc area, for the radial deflection of the hot gases into the exhaust volume, which is connected through at least one second opening to an arcing chamber volume. The aim is to increase the disconnection rating of this circuit-breaker. This is achieved by providing at least one intermediate body between the hollow contact and the exhaust body.

Abstract: The invention relates to an improvement to the thermal load capacity of generator switches (20, 21, 22). As is known, radiation plates (5, 50, 51, 52) are used between generator switches (20, 21, 22) for different phases (R, Y, B) for convective dissipation of radiated heat from adjacent encapsulation side walls (30b). According to the invention, in the vicinity of the encapsulation cover (3a) of a generator switch (20, 21, 22), the radiation plate (5, 50, 51, 52) has at least one angled metal sheet (50a) which is used to guide at least one air flow element (9) of the rising air flow (9) in the direction of the encapsulation cover (3a) and in order to direct the flow along the encapsulation cover (3a).

Abstract: This circuit-breaker has at least one arcing chamber which is filled with isolating gas, extends along a longitudinal axis (1), is designed to be essentially radially symmetrical, contains an arc area and has at least two power contact pieces. At least one of the power contact pieces is in the form of a moving or stationery tubular hollow contact (2), which is provided for dissipating hot gases from the arc area into a concentrically arranged exhaust body (10). A deflection device (4), which interacts with at least one opening (6) in the hollow contact (2), is arranged on the side of the hollow contact (2) facing away from the arc area, for the radial deflection of the hot gases into the exhaust volume (10), which is connected through at least one second opening (13) to an arcing chamber volume (14). The aim is to increase the disconnection rating of this circuit-breaker. This is achieved by providing at least one intermediate body (7) between the hollow contact (2) and the exhaust body (10).