Nexans

David Dubois

Christian Frohne

Abdellatif Ait Amar

Volker Gauler

Pascal Streit

Martin Henriksen

François Gahungu

Benoît Rollet

Younes Norouzi

Jean-Sébastien Rimbault

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

A cable including a conductor. An insulation system surrounds the conductor. A metallic screen surrounds the insulation system. A jacket surrounds the insulation system. The metallic screen is constructed of stainless steel.

Stainless steel screen and non-insulating jacket arrangement for power cables

A three-phase, buried, high-voltage electrical line has three phase-conducting cables (), each of the conducting cables () made of a succession of cable portions () connected together by different types of screen-break junctions (), each junction () comprising a main structure () connecting a first portion () to a second portion () of cable (). The main structure () of all the junctions () is identical and has a standard connection interface () connected to a first screen of the first portion () and to a second screen of the second portion (), and in that a variable module () furnished with a complementary connection interface () and with at least one linking cable (), is capable of being plugged into the connection interface () of the main structure () of each junction ().

Electrical line furnished with screen-break junctions

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Clerques, France

David Dubois