Schneider Electric Industries Sas

Sébastien Buffat

Pascal Houbre

David Loglisci

Frédéric Toti-Buttin

Vivien Moliton

Michel Rapeaux

Philippe Brunel

David Granier

Audrey Olivier

Gilles Budillon

Stéphane Alban

Stéphane Sicard

François Roubardeau

A device for measuring an electric quantity such as electric current flowing in an electric equipment unit, which device is in a case fitted on a mounting support, and having pass-through holes and terminals separated by insulating material, their number corresponding to the number of phases of the equipment unit, the holesto permit a conductor to pass therethrough, to be electrically connected to strips of terminals of the equipment unit the opposite end to electric contact strips of a load-side or line-side apparatus from the equipment unit and, for at least one terminal of the device, a magnetic core at least partially surrounding such terminal with an air-gap around which a secondary measuring coil is wound between two end portions of the magnetic core which define the air-gap, the coil(s) delivering a signal representative of the current flowing in the apparatus.

Device for measuring the electric current flowing in an electric apparatus, said device enabling power measurement, and an electric apparatus comprising same

The Rogowski type current measuring device comprises at least three coils electrically connected in series and forming a closed polygonal outline designed to surround a conductor to perform current measurement. The local inductance of at least one of the ends of said coils is greater than the local inductance towards the central part of said coils.

Electric current measuring device, current sensor, electric trip unit and breaking device comprising such a measuring device

Growing community of inventors

Tullins, France

Sébastien Buffat