Siemens Aktiengesellschaft

Werner Elischer

Reinhard Maier

Gerd Griepentrog

Erich Zerbian

A protection device includes a measurement device that is a current transformer which is based on a printed circuit, and an evaluation device that is a unit for early short-circuit identification. The current transformer, which is based on a as printed circuit board, is preferably a multiwinding transformer. The unit for early short-circuit identification operates on the basis of a so-called locus curve method, which uses instantaneous values of the current and current rate of change to identify a short circuit.

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Spardorf, Germany

Werner Elischer