Aircraft applicable circuit imbalance detection and circuit...

H - Electricity – 02 – H

Patent

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Details

H02H 3/00 (2006.01)

Patent

CA 2566853

The aircraft applicable current imbalance detection and circuit interrupter interrupts an electrical circuit when a current imbalance is sensed. The current imbalance detection and circuit interrupter includes a housing, power supplies, a sensor system for sensing a current imbalance at the line side of the electrical circuit, a logic controller and a power controller including a power relay having contacts capable of surviving carry-break and make-carry- break types of ground fault conditions at anticipated current levels. At power up, the device performs a test to confirm that none of the relay contacts have failed in a closed position, and to check whether a switching FET which controls the relay coil has shorted.

Un interrupteur de circuit et de détection du déséquilibre du courant applicable à un aéronef interrompt un circuit électrique lorsque l'on détecte un déséquilibre de courant. L'interrupteur de circuit de détection de déséquilibre de courant comprend un boîtier, des alimentations, un système de détection permettant de détecter un déséquilibre de courant sur le côté ligne du circuit électrique, un contrôleur logique et un contrôleur de puissance comprenant un relais de puissance ayant des contacts aptes à surmonter des conditions de défauts de mise à la terre à deux ou trois calibres (carry-break et make-carry-break) à des niveaux de courant anticipés. Lors de l'augmentation de la puissance, le dispositif effectue un essai pour confirmer qu'aucun des contacts de relais n'est tombé en panne dans une position fermée et pour vérifier si une commutation FET contrôlant la bobine de relais n'a été réduite.

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