Areva T&d Sa

Gec Alsthom T&d Sa

Andre Cimala

Alain Girodet

Gwenael Marquezin

Marc Vittoz

Andre Neveu

Mehdi Lebiad

A high or very high voltage circuit breaker comprising, for each phase:

Circuit breaker having a plurality of breaker chambers arranged in parallel, with a common transmission and reduced length

A device for the actuation of the movable contacts of a hybrid circuit breaker allows the following time diagram to be implemented: command the opening of the interrupting chamber, offset the opening of the vacuum switch so as to allow the interrupting chamber contacts to separate at a minimum speed and in a way that is synchronous with the separation of the vacuum switch contacts, close the vacuum switch while keeping the interrupting chamber in the open position. Moreover, closing the interrupting chamber does not act upon the contacts of the vacuum switch.

Drive kinematics in a hybrid circuit-breaker

The present invention relates to a high-voltage circuit-breaker including a casing that is filled with a dielectric gas and that contains a first arcing contact and a second arcing contact, which arcing contacts are mounted to move in opposite directions from an open position to a closed position and vice versa, the first contact being secured by means of a ring to a tube mounted to slide in a support portion electrically connected to a terminal. Said ring is made of an insulating material, the first contact is extended by a rod that is in alignment with the contact, which rod is disposed on the side of the first contact that is further from the second contact, and is connected to a resistance, and said rod carries a switching member organized to connect said rod directly to said support portion during closure.

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Villeurbanne, France

Andre Cimala