AUXILIARY UNIT FOR AN ELECTRIC CIRCUIT BREAKER, ELECTRIC SYSTEM COMPRISING A CIRCUIT BREAKER AND ONE SUCH AUXILIARY UNIT AND METHOD FOR DETERMINING A CAUSE OF OPENING OF THE CIRCUIT BREAKER BY MEANS OF ONE SUCH AUXILIARY UNIT

摘要

The auxiliary apparatus according to the invention may be coupled to an electric circuit breaker.;In the open position, the breaker is able to interrupt the circulation of a current in an electrical connection, the connection including at least one electrical conductor, and it includes a mechanical output member movable between an operating position and a stop position associated with the interruption of the circulation of the current in said connection after opening of the breaker.;The auxiliary apparatus includes at least one current sensor, each current sensor being able to measure the current circulating in a respective conductor, and a mechanical coupling means for mechanical coupling with the mechanical output member, the mechanical coupling means forming means for detecting the opening of the breaker.;The auxiliary apparatus further comprises a device for determining a cause of the detected opening, based on the intensity measured by each current sensor.

主权项

1. An auxiliary apparatus for an electric circuit breaker, the electric circuit breaker being, in the open position, able to interrupt the circulation of a current in an electrical connection, the electrical connection including at least one electrical conductor, the electric circuit breaker including a mechanical output member, movable between an operating position and a stop position corresponding to the interruption of the circulation of the current in said electrical connection,
the auxiliary apparatus comprising:
a mechanical coupling means for mechanical coupling with the mechanical output member, the mechanical coupling means forming means for detecting the opening of the circuit breaker, wherein it further comprises at least one current sensor capable of measuring the intensity of the current circulating in a respective electrical conductor, and a determining device for determining a cause of the detected opening, based on the intensity measured by each current sensor, the determining device being connected to the mechanical coupling means and the current sensor.