Device and method for signalling electric faults, unit and electric panel comprising such a device

摘要

5 DEVICE AND METHOD FOR SIGNALLING ELECTRIC FAULTS, UNIT AND ELECTRIC PANEL COMPRISING SUCH A DEVICE 10 The electric fault signalling device comprises a differential current sensor, processing means (16) comprising fault current detection means (21) and electric fault signalling means (17, 18). Said processing means comprise means (29) for detecting a voltage on a control input (30). Signalling processing means (22) provide said signalling means (23, 24, 25) with a first signalling signal (IS1) when 15 said first detection signal (Fd1) is representative of a threshold overshoot and when said voltage detection means (29) have detected a voltage outage on said control input. The method comprises signalling (58) of a location electric fault when an overshoot (55) of said first threshold is detected and a voltage outage is detected. (Figure 3) IS1 STOREDi ;Z NO: YES 5 Id I d > SI (Fd1) NO T > D IlS1 STORED Fd2 ? IS2 STORED |S1 ,ANUAL NO' RESET? 53 'Fd17 FIG. 6