Alstom

Henri Jouard

Jean Marmonier

Bernard Regnier

Olivier Chuniaud

A high voltage electrical disconnector that has a moving contact that moves at high speed comprises a moving first contact which is mounted to move along an axial direction relative to a fixed second contact, and which co-operates therewith to establish an electrical connection, and a rod extending along said axial direction and which is driven to move the first contact relative to the second contact. The first contact is a hollow tube in which there slides a piston mounted on the rod. A first spring is interposed between the moving contact and a first end of the piston, and a second spring is interposed between moving contact and a second end of the piston. A first locking system is provided to prevent the moving contact from moving during a closure operation while the first spring is simultaneously being compressed, the first locking system retracting after the first spring has been compressed by a certain amount so that the moving contact is connected to the fixed contact under the effect of the first spring relaxing. A second locking system is provided to prevent the moving contact from moving during an opening operation while the second spring is being compressed by the piston, said second locking system retracting after the second spring has been compressed by a certain amount so that the moving contact is disconnected from the fixed contact under the effect of the second spring relaxing.

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Aix les Bains, France

Henri Jouard