DIFFERENTIAL PROTECTING DEVICE INCORPORATING A MEANS FOR ISOLATING A RELAY OR ANALOGOUS

摘要

The subject of the present invention is a differential protecting device that makes it possible to detect a fault current in an electrical apparatus, with a set of functional means (3, 3', 3", 3''') for measuring, processing, evaluating and controlling and a breaking means (4) that in particular has a characteristic braking power, that is connected to the output of said functional set (3, 3', 3", 3''') and that is intended to be triggered by the control signal, this device (1) being characterised in that it furthermore incorporates a least one selective isolating means (6) that is able and intended to electrically isolate said breaking means (4), at least with respect to said functional set (3, 3', 3", 3'''), selectively.