Nexans

Volker Gauler

Christian Frohne

David Dubois

Michael Menger

Torsten Voigt

Younes Norouzi

A method for localizing a short circuit between a conductor and an electrically conductive shield of a high-voltage cable comprises providing at least two measuring apparatuses arranged at the high-voltage cable at a known distance from one another and having timers, synchronized with one another, and a measuring device for detecting an electric current flowing in the shield and/or an earthing line connecting the shield and earth. The measuring apparatus transmits pairs of current measurement values and associated values of the timer to an analysis unit, which, upon the occurrence of a current exceeding a threshold value and/or of a current profile over time that satisfies specific stipulations, feeds to a calculation unit the associated values of the timers and also an indication about the location of the measurement, for which first effects of the short circuit occurred. The calculation unit calculates the location of a short circuit from the known distance between the measuring apparatuses and a difference between the values of the synchronized timers.

Method and system for localizing a short circuit between a conductor and an electrically conductive shield surrounding said conductor

An electrical conductor comprises three or more solid segments of identical shape. In cross-section, each segment comprises two sides, which are configured for flush bearing against correspondingly opposing lateral surfaces on another segment. The cross-sectional surface through all the constituent segments of the electrical conductor is describable by a closed curve having a stepless characteristic. All the constituent segments of the electrical conductor are stranded in combination.

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Wedemark, Germany

Volker Gauler