Spark-gap device, particularly high-voltage spark-gap device

Details Spark-gap device, particularly high-voltage spark-gap device Spark-gap device, particularly high-voltage spark-gap device

H - Electricity

01

T

H01T 2/02 (2006.01)

Patent

CA 2523850

Spark-gap device comprising two discharge electrodes (2; 3) each having an elongated conductor portion (10; 5), called the active portion, with a connecting longitudinal end (11; 7) fixed to a connector. The electrodes are arranged in such a way that, when an electric arc is generated, said arc is formed between the active portions and the resulting electric current induces a magnetic field moving the electric arc along said active portions, preferably at an erosion-limiting high speed. At least a discharge electrode further comprises at least a second conductor portion (9, 16; 6), called the passive portion, electrically connected to the connector and/or the active portion and with a form adapted to prevent a spontaneous electric arc from being inopportunely generated in normal usage conditions of the device.

L'invention concerne un éclateur comprenant deux électrodes de déchargement (2 ; 3) présentant chacune une portion conductrice allongée (10 ; 5), dite portion active, ayant une extrémité longitudinale (15, 17 ; 28) de connexion reliée à un connecteur (11 ; 7). Les électrodes sont agencées de telle sorte que, lorsqu'un arc électrique se forme, cet arc se forme entre les portions actives et le courant électrique ainsi établi induise un champ magnétique qui déplace l'arc électrique le long desdites portions actives, de préférence à une vitesse élevée limitant l'érosion. Au moins une électrode de déchargement présente de plus au moins une autre portion conductrice (9, 16 ; 6), dite portion passive, électriquement reliée au connecteur et/ou à la portion active, et ayant une forme adaptée pour empêcher toute formation spontanée intempestive d'un arc électrique dans des conditions normales d'utilisation de l'éclateur.

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