Title: Current auxiliary relay for circuit breaker

Abstract: In a circuit breaker control installation, an electromechanical current auxiliary relay is provided having a series primary coil of relatively few turns wound over an isolated shunt secondary coil of many turns. Both coils are wound on a magnetic core which is integral with the armature of the trip-alarm relay. A diode is connected in series with the secondary coil having such polarity that collapse of current in the series primary winding energizes the shunt secondary winding in a direction to circulate current through the diode thereby holding the armature of the trip-alarm relay in closed-contacts position, thereby providing a substantially longer contact closure time delay for the alarm circuit.

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Inventors: Janycky, Lubomyr (Philadelphia, PA, US)

Application Number: 560787
Filing Date: 1975-03-21
Publication_date: 1976-01-27
Assignee:
Primary Class(es): 361/159 361/194
Other Classes:
US Patent Ref:

2669664	Feb, 1954	Poznik	317/155.
3258758	Jun, 1966	Byrd	340/253.
3611043	Oct, 1971	Steen	317/33.

Other Refs:
Primary Examiner: Envall, Jr., R. N.
Assistant Examiner:
Attorney: Paul & Paul