Alstom Technology Limited

General Electric Technology Gmbh

Areva T&d Ag

Ge Vernova Infrastructure Technology LLC

Alstom Grid Ag

Peter Von Allmen

Ernst Suter

Robert Lüscher

Lukas Treier

Markus Keiser

Daniel Kalin

Simon Ardyna

Martin Zeugin

Marius Gacond

Roger Boiteux

Martin Walt

Benoît De Lussy

Daniel KÄLIN

An actuating mechanism for a circuit breaker includes a first piston movable in a first cylinder, against the force of a first compressible member, by admitting hydraulic fluid, and a second piston movable in a second cylinder, against the force of a second compressible member, by admitting hydraulic fluid. Hydraulic fluid can transferred from the second cylinder into the first cylinder via an interconnecting fluid passage, and released from the first cylinder via an outlet fluid passage. The first piston is arranged to be connected to a circuit breaker in a switchgear so as to open and close it. Importantly, the first piston is directly mechanically connected to the first compressible member, ensuring that all the energy stored in the compressible member is available to open the circuit breaker.

Actuating mechanism for operating a circuit breaker

A spring arrangement for operating a high and medium voltage circuit breaker comprising a cylindrical housing having a main axis, an actuation rod, a coil spring arranged in the cylindrical housing, coupled with the rod, and a coupling arrangement coupling an end of the spring with an end of the rod, wherein the coupling arrangement comprises an articulation for guiding an end of the rod in rotation with respect to the second end of the spring around a second axis perpendicular to said main axis and comprises sliding means for the translational guiding of the second end of the rod along said main axis.

Voltage source converters

The invention relates to an actuator circuit for actuating a circuit breaker controller, the circuit being characterized in that it comprises two branches in parallel between two terminals and in that

Actuator circuit for control of circuit breaker

An enclosure for the operating mechanism of a circuit breaker, this mechanism including a main shaft and secondary shafts, and a spring to actuate the mechanism. This enclosure includes a parallelepiped base having an open face and including a bottom wall opposite to its open face, this bottom wall having holes to receive bearings carrying the shafts; a supporting part including a main wall to be mounted at the open face of the base, the main wall including holes to receive bearings carrying the other extremities of the shafts; a cover to close the supporting part.

Enclosure for the operation mechanism of a circuit breaker

The control device possesses a rigid main part combining most of the functional elements of this type of control device. It is made up of two portions of a rotary shaft, having placed between them a cam and a support arm that are connected together by a pivot that is offset relative to the axis of rotation. A toothed wheel having an inner set of teeth is placed around the support arm that is provided with a rachet system. The toothed wheel has an outer set of teeth-driven by a motor, via an intermediate gearwheel. The pivot controls the compression of the actuator spring by the assembly rotating. The device is applicable to high and medium voltage circuit breakers and switches.

Control device of the spring type particularly for a high-voltage or medium-voltage circuit breaker or switch

The invention relates to a spring controller for high- or medium-voltage electric switchgear, the controller having a free-wheel coupling device between a crank handle or a motor and the drive shaft () for driving a switch contact of the switchgear and respectively providing coupling while the spring(s) () is/are being loaded and decoupling while the spring(s) is/are being released. The free-wheel mechanical device is incorporated in a toothed wheel () of the controller and includes at least one pawl () meshing or not meshing with an inner set of teeth () of the toothed wheel ().

Control of spring(s) type for a high- or medium-voltage breaker furnished with a pawled free wheel coupling device

A circuit breaker has a stationary contact and a movable contact, and an actuator device for actuating it comprises a rigid drive shaft () that drives the movable contact, first resilient means for driving the movable contact, and a torsion bar () for driving the drive shaft, the torsion bar () being suitable for being deformed in twisting in order to assist the resilient means during an initial period while opening the contacts of the circuit breaker. The torsion bar () is housed inside the drive shaft (). A first end () of the torsion bar () is constrained to turn with a ring (). A second end () of the torsion bar () is constrained to turn with the drive shaft ().

Device for actuating the contacts of a circuit breaker, comprising a torsion rod

A control device, including a transmission shaft adapted to be coupled to an apparatus to be controlled, a driving disk mounted on said transmission shaft to rotate thereon and driven in rotation by a motor unit, a driven disk constrained to rotate with said transmission shaft, and a rotary member carrying at least one indexing means which, due to rotation of said rotary member, can be simultaneously engaged into two respective slots of said two disks for said transmission shaft to be driven in rotation, and can be disengaged from one of said slots for said transmission shaft to be locked against rotation.

Mechanical control device especially for controlling a high-voltage or medium-voltage disconnector

A control device () for an electrical switchgear with three switching positions including a closed position, an open position and an earthing position. The switchgear includes a main shaft () and a drive shaft (). The control device includes a mode selector lever () designed to select one operating mode among a motor driven switching mode, a manual switching mode between the open position and the closed position of the electrical switchgear, and a manual switching mode between the open position and the earthing position of the electrical switchgear. The mode selector lever has an opening with a curved contour, and the control device includes a cam disk () with a cam () capable of moving inside the opening (). The control device may be applied to an isolating switch.

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Buchs, Switzerland

Peter Von Allmen