Lightning arrestor device for high power electric installations

H - Electricity – 02 – H

Patent

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Details

H02H 9/04 (2006.01) H02H 3/05 (2006.01)

Patent

CA 2362226

The invention concerns a lightning arrestor device for protecting an installation (3) powered by an electric transmission line (1). Said device consists of at least two assemblies connected in parallel between the line terminals and comprise each a disconnector (P, P') mounted in series with at least a voltage-dependent variable resistance component. Said device is characterised in that the variable resistance component is a Zener diode, at least one assembly consisting of at least two Zener diodes (Z¿1?, Z¿2?) arranged in parallel.

La présente invention concerne un dispositif parafoudre destiné à protéger une installation (3) alimentée par une ligne électrique (1). Ce dispositif est formé d'au moins deux ensembles branchés en parallèle entre les bornes de la ligne et comprennent chacun un déconnecteur (P, P') monté en série avec au moins un composant à résistance variable en fonction de la tension. Ce dispositif est caractérisé en ce que le composant à résistance variable est une diode de type Zener, au moins un ensemble étant constitué d'au moins deux diodes de type Zener, (Z1, Z2) disposées en parallèle.

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