Patent ID: 6392858
Filing Date: 2002-05-21
Classification: H02H

Abstract:
A trip device with phase reconstitution comprising:at least two sensors arranged on main conductors to be protected, and a processing unit comprising means for processing the current signals connected to the sensors, means for phase reconstitution configured for receiving signals representative of the current signals supplied by the sensors, and means for processing tripping functions connected to the means for processing the current signals and to the means for reconstitution, said means for phase reconstitution comprising: first means for determining signals representative of the amplitudes of the current signals supplied by the two sensors, second means for determining a signal representative of a phase shift between signals representative of the signals supplied by the two sensors, and third determining means, connected to the first and second determining means, for determining a signal representative of a phase current reconstituted according to the signals representative of the amplitudes and to the signal representative of a phase shift of the signals supplied by the two sensors.