Ground fault protection circuit

Details Ground fault protection circuit Ground fault protection circuit

H - Electricity

02

H

H02H 3/16 (2006.01) H05B 41/285 (2006.01)

Patent

CA 2346886

A ground fault detection circuit is coupled to an AC circuit and to earth ground for detecting a flow of energy from the AC circuit to earth ground through a path external to the AC circuit. In one embodiment, the ground fault circuit includes a detection circuit coupled to a negative rail of an inverter, which forms part of the AC circuit, and a detection control circuit coupled to the inverter for disabling the AC circuit.

Selon cette invention, un circuit de détection de fuite à la terre est couplé à un circuit c.a. et à la terre de manière à détecter un flux d'énergie depuis un circuit c.a. vers la terre à travers une voie à l'extérieur du circuit c.a. Dans un mode de réalisation, le circuit de détection de fuite à la terre comprend un circuit de détection couplé à un rail négatif d'un inverseur qui fait partie d'un circuit c.a. et à un circuit de commande de détection couplé à l'inverseur et servant à désactiver le circuit c.a.

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