Determination of the proportion of differential current made up of faulty current

摘要

for the determination of the fehlerstromanteils (fi) of a differenzstrom (di), and the differenzstrom (di) as a stromsumme about the power of a wechselstromgenerators (1) leading lines (l, n; 29, 30) is recordedwith a tension of the wechselstromgenerator (1) to earth (pe) dependent electrical signal (27) with a capacity to earth (pe) with a scaling factor is multiplied with the rpe and such electrical signal (28) as a measure for the ableitstr omanteil (ai) of the differenzstrom (di) is subtracted.the scaling factor is constantly updated in such a way that the rms of differenzstroms (di) by subtracting the scaled electrical signal (28) despite changing capacity of the wechselstromgenerators (1) to earth (pe) with the current value of the scaling sfaktors a minimum value.