Electrical switching apparatus including a trip coil open...

Details Electrical switching apparatus including a trip coil open... Electrical switching apparatus including a trip coil open...

G - Physics

01

R

G01R 31/327 (2006.01)

Patent

CA 2735928

A circuit breaker includes separable contacts, an operating mechanism structured to open and close the separable contacts, and a trip circuit including a trip coil and a fault detector. The fault detector energizes the trip coil to cause the operating mechanism to open the separable contacts. A test circuit is structured to test the trip coil and determine an open circuit condition thereof. An annunciation circuit is structured to annunciate the open circuit condition of the trip coil.

L'invention porte sur un disjoncteur qui comprend des contacts séparables, un mécanisme d'actionnement structuré pour ouvrir et fermer les contacts séparables, et un circuit de déclenchement comprenant une bobine de déclenchement et un détecteur de défaut. Le détecteur de défaut alimente la bobine de déclenchement pour amener le mécanisme d'actionnement à ouvrir les contacts séparables. Un circuit de contrôle a une structure conçue pour permettre le contrôle la bobine de déclenchement et déterminer une condition de circuit ouvert de celle-ci; Un circuit d'annonce a une structure lui permettant dannoncer la condition de circuit ouvert de la bobine de déclenchement.

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