PROCEDE ET DISPOSITIF POUR LA LOCALISATION D'UN DEFAUT DANS UN CABLE ELECTRIQUE

The device consists of a voltage source (5) supplying the potential divider circuit formed by the two conductors (1, 3) of an electric cable, an analog-digital converter with display (7), means for connecting the cable to the device, a variable gain input circuit connected in series at the input to the converter and a switch (6) arranged so as to connect, during a first phase, the input circuit to the voltage source and, during a second phase, this input circuit to the potential divider circuit. The known length of the cable is displayed during the first phase by adjusting the gain of the input circuit and the distance at which the fault is located is read directly on the display during the second phase.