Schneider Electric Industries Sas

Audrey Olivier

Sebastien Buffat

David Loglisci

Michel Rapeaux

Philippe Brunel

David Granier

The Rogowski coil type sensor for measuring current includes a carrier and at least one secondary winding. The winding includes: at least one internal layer with a high turn density, which layer is wound in an 'outward' first winding direction from the first end to a second opposite end of the winding, and at least one external layer with a low turn density, which layer is wound in a 'return' second winding direction. The external layer with a low turn density includes: a first compensating portion with a high turn density, which portion is of small length and close to the first end, a central portion with a low turn density, which portion is of large length, and a second compensating portion with a high turn density, which portion is of small length and close to the second end.

Rogowski coil type sensor for measuring current, measuring device and electrical circuit breaker including such a sensor, and method for winding such a sensor

A device comprises elements for measuring current, the elements being housed in a casing. The casing includes a first portion and a second portion made of plastic, welded to each other, which together define a housing for receiving the measuring elements. The first portion is opaque in order to absorb a laser beam for welding the portions, and the second portion is transparent in order to let the laser beam pass. The process for manufacturing the device includes a fitting step in which the measuring elements are fitted into the casing and an assembly step in which the portions of the casing are joined together using a laser welding process.

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Teche, France

Audrey Olivier