Abstract: The switching chamber is intended for a gas-insulated high-voltage switch. It contains a housing filled with insulating gas and a contact arrangement held in the housing. The contact arrangement has, in a coaxial arrangement, the following components: two switching pieces, which are capable of being moved relative to one another along an axis, with in each case one arcing contact and in each case one tubular conductor containing a rated current contact, an insulating nozzle, and a compression apparatus with a fixed piston and a cylinder. A moveable tubular conductor of the two tubular conductors forms the wall of the cylinder, is electrically conductively and rigidly connected to one of the two arcing contacts via a base of the cylinder and bears the insulating nozzle.

Abstract: An electrical circuit breaker has a first contact piece which can be moved in a first movement range along a switching axis and has an arcing contact, a second contact piece which can move along the switching axis and which has a further arcing contact, a drive for moving the first contact piece and a gear for transferring the movement of the first contact piece to the second contact piece. The gear has a first dead point which is passed through on the output drive side by the gear during the movement of the first contact piece in the first movement range.

Abstract: The disclosure relates to an electrical breaker device with double movement of its contact systems. An auxiliary gear is designed for driving the second contact systems such that the holding means for holding the rack and pinion gear and the guiding means for slide guiding and slide contacting the auxiliary-gear-driven arcing contact piece are constructed integrally in a monoblock. Embodiments, among others, relate to: a pusher guide slide bearing recessed in the arcing contact piece that is driven by the auxiliary gear; a minimal configuration of the toothed rack drive with only one cogwheel; and a limit stop for defining an end position for the auxiliary-gear-driven arcing contact piece. Advantages, among others, are: auxiliary gear with reduced number of parts, and simplified mounting and adjustment.

Abstract: An electrical switching apparatus is disclosed with a moveable insulating nozzle for blowing an arc. According to the invention, the insulating nozzle is connected in an interlocking and force-fitting manner to at least one moveable component part of the switching apparatus by means of a clamping device and without a screw connection. Exemplary embodiments relate, inter alia, to: a clamping hold of the insulating nozzle on the moving buffer cylinder and/or at the opposite end on a part to be moved, in particular a moveable shielding electrode or an auxiliary gear mechanism for a contact system, which is driven on both sides. Advantages include: simple fitting of the insulating nozzle, small physical volume of the clamping device; precise coaxial fixing of the insulating nozzle in relation to the switch axis.

Abstract: The switching chamber for a heavy-duty circuit breaker which can be filled with a quenching gas has a first arcing contact piece (1) and a second arcing contact piece (2), of which at least one (1; 2) can be moved by means of a drive. An arc (4) may burn between the contact pieces (1, 2). A heating chamber (11) is used for temporarily storing quenching gas heated by the arc (4). An insulating nozzle (5) has a throat (6), which is used for guiding a quenching gas flow and is connected to the heating chamber (11). During an opening operation, a maximum relative speed v12,max of the two arcing contact pieces (1, 2) in relation to one another is reached which is at least 1.3 times as great as a relative speed v12,c of the two arcing contact pieces (1, 2) which is required for capacitive switching.

Abstract: The heavy-duty circuit breaker can be filled with a quenching gas and contains a first moveable arcing contact piece and a second moveable arcing contact piece as well as a drive for driving the first arcing contact piece and an auxiliary drive for driving the second arcing contact piece. An arc may burn between the arcing contact pieces. The heavy-duty circuit breaker has a heating chamber for temporarily storing quenching gas heated by the arc and an insulating nozzle, which has a throat for guiding a quenching gas flow, which throat is connected to the heating chamber by means of a channel. The throat can be blocked at least partially by one of the two arcing contact pieces, which is referred to as the blocking contact piece.

Abstract: The switching device for switching high electrical currents and voltages has at least one switch pole (1, 1?, 1?) which is operated by means of a rotatable shaft (8, 8?, 8?). Furthermore, the switching device has at least one lever system (10, 10?, 10?), a first switching linkage (11) and at least one drive (2) with a drive rod (24), with the rotatable shaft (8, 8?, 8?) being connected to the lever system (10, 10?, 10?), the lever system (10, 10?, 10?) being connected to the first switching linkage (11), and the first switching linkage (11) being operatively connected to the drive rod (24). Movements of the drive rod (24) are converted to rotary movements of the rotatable shaft (8, 8?, 8?). The physical space which is required for installation of the switching device is intended to be capable of being matched to the physical circumstances.

Abstract: The shaft includes two electrically conducting connecting pieces (2, 3), which can be connected to different electric potentials, and also an insulating tube (4), which can be subjected to torsional loading. The two connecting pieces (2, 3) are respectively fastened to one of the two ends of the insulating tube (4). 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 (2, 3): An adhesive joint (5), which is formed by a cone (6) formed into one end of the insulating tube (4) and made to run from the circumferential surface (7) to the inner surface (8) of the insulating tube (4) and also by a mating cone (9) formed into the at least one connecting piece (2, 3), and by a gap (10) formed by the cone (6) and mating cone (9) and filled with adhesive.

Abstract: The switching device for switching high electrical currents and voltages has at least one switch pole (1, 1′, 1″) which is operated by means of a rotatable shaft (8, 8′, 8″). Furthermore, the switching device has at least one lever system (10, 10′, 10″), a first switching linkage (11) and at least one drive (2) with a drive rod (24), with the rotatable shaft (8, 8′, 8″) being connected to the lever system (10, 10,′, 10″), the lever system (10, 10′, 10″) being connected to the first switching linkage (11), and the first switching linkage (11) being operatively connected to the drive rod (24). Movements of the drive rod (24) are converted to rotary movements of the rotatable shaft (8, 8′, 8″). The physical space which is required for installation of the switching device is intended to be capable of being matched to the physical circumstances.

Abstract: The power breaker is provided with at least one arcing chamber (2) which is filled with SF6 gas, is rotationally symmetrical, and extends along a longitudinal axis (3). The arcing chamber (2) has a power current path with a central contact pin (14), and has a separate rated current path provided with rated current contacts (11). The arcing chamber (2) is operated by a drive linkage (4) which moves the contact pin (14) and the rated current contacts (11). The drive linkage (4) is designed such that, at the start of the disconnection process, the contact pin (14) remains in a first dead point position until the rated current path is interrupted. The contact pin (14) can then be moved in the disconnection direction at a considerably higher speed than the rated current contacts (11). Toward the end of their disconnection travel, the rated current contacts (11) run into a second dead point position.

Abstract: The power breaker is provided with at least one arcing chamber (2) which is filled with SF6 gas, is rotationally symmetrical, and extends along a longitudinal axis (3). The arcing chamber (2) has a power current path with a central contact pin (14), and has a separate rated current path provided with rated current contacts (11). The arcing chamber (2) is operated by a drive linkage (4) which moves the contact pin (14) and the rated current contacts (11). The drive linkage (4) is designed such that, at the start of the disconnection process, the contact pin (14) remains in a first dead point position until the rated current path is interrupted. The contact pin (14) can then be moved in the disconnection direction at a considerably higher speed than the rated current contacts (11). Toward the end of their disconnection travel, the rated current contacts (11) run into a second dead point position.

Abstract: An automatically resetting safety valve for a generator circuit breaker is to open rapidly and wide, even if the pressure applied to a valve-closing body (1) does not increase substantially over a valve stroke (a) or even falls. In order to ensure this, a valve-closing-body joint (10) of the valve-closing body (1) via a first closing-body lever (H1) and via a first sliding joint (3), is connected in an articulated manner to a first support lever (H2), which is rotatably mounted in a first support lever joint (4) fastened to a lever wall (5). The first sliding joint (3), via a first compression spring (8), is in compressive connection with a spring wall joint (7) fastened to a spring wall (6). The valve-closing body (1) is movable along a plain-bearing axis (A). First and second closing-body levers (H1, H1′) and first and second support levers (H2, H2′), which are arranged in mirror image relative to the plain-bearing axis (A) of the valve-closing body (1), may be provided.