Schneider Electric Industries Sas

Wedian Youssef

Philippe Schuster

Bruno Reymond

Christophe Kilindjian

Sylvain Marie

Michel Hennequin

Gabriel Rilling

A method for monitoring an electrical installation comprises:

Method for monitoring an electrical installation comprises

A method for diagnosing the cause of tripping of an electrical protection device includes, after detection by the auxiliary device of a loss of electrical power, determining a type of electrical fault on the basis of recorded values, the determining operation including: comparing, with a first threshold value, the largest value of the maximum intensity of the current from the recorded values for a plurality of measurement intervals preceding the loss of power, a short circuit being diagnosed if the largest value of the maximum intensity is greater than a first threshold value; comparing, with a second threshold value, the largest RMS value of the current from the recorded values, an overload being diagnosed if the largest RMS value is greater than a second threshold value.

Method for diagnosing the cause of tripping of an electrical protection device, auxiliary device and electrical system for implementing such a method

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Grenoble, France

Wedian Youssef