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The measuring device uses the loop impedance to calculate the short-circuit current in the event of a fault. The measurement at the end of the line is used to check compliance with the automatic shutdown. In the event of a fault (short circuit to body), the protective device must interrupt the circuit in good time to ensure, first and foremost, personal protection. Find out more about the correct loop impedance measurement and the optimal use of protective devices in our measuring courses: https://shop.electrosuisse.ch/de/weit...