Supergrid Institute

Supergrid Institute Sas

Alstom Technology Limited

General Electric Technology Gmbh

Paul Vinson

Alain Girodet

Thomas Berteloot

Gwenaël Marquezin

Florent Morel

Maxime Gery

André Cimala

Geoffrey Renon

Thanh Vu Cong

Nihal El Fahim

Liului Huang

The present invention relates to a device () for measuring a magnetic field (B) and/or an electric field (E) comprising:&#x2014;a measurement cell () enclosing a gas that is sensitive to the Zeeman effect and/or to the Stark effect, a polarised light source () the wavelength of which is tuned to an absorption line of the gas that is sensitive to the Zeeman effect and/or to the Stark effect,&#x2014;at least one polarimetry system () configured to measure a first parameter corresponding to the rotation by a polarisation angle caused by the passage of the beam () through the measurement cell () enclosing a gas that is sensitive to the Zeeman effect and/or to the Stark effect,&#x2014;a system () for measuring absorption, configured to measure a second parameter corresponding to the absorption of the beam () by the gas that is sensitive to the Zeeman effect and/or to the Stark effect in the measurement cell (), and a processing unit () configured to combine the measurement of the first parameter corresponding to the rotation by the polarisation angle and the absorption measurement in order to extract therefrom a third and/or fourth parameter corresponding respectively to an electric field (E) and/or a magnetic field (B) to be measured.

Device for measuring an electric and/or magnetic field in particular in a conductor for transporting electrical power

A mechanical breaker apparatus for breaking an electric circuit comprises two electrodes that are movable relative to each other, and including an electric arc splitter device having a multitude of distinct conductive elements that are spaced apart and electrically insulated relative to one another. The splitter device has a first portion and a second portion that are movable relative to each other between: an electrical contact position; and a spaced-apart position of the two portions. The splitter device has at least one series of the distinct conductive elements that, in an electrically closed position of the electrodes of the mechanical apparatus, are arranged along the continuous electrically-conductive path for the nominal electric current through the apparatus as defined by the two portions of the splitter device in the electrical contact position.

Mechanical cut-off apparatus for a high-voltage or very high-voltage electric circuit with splitting device

A medium- or high-voltage switch (), comprising a high-vacuum enclosure (); first and second contacts () that are mounted to be movable in translation relative to each other inside the enclosure () between an open position in which the first and second contacts () are spaced apart; and a closed position in which the first and second contacts () are in electrical contact. The switch () further comprises a conductor () arranged inside the enclosure () in such a manner that there exists a pressure threshold inside the enclosure () from which partial discharges are generated by said conductor, at least when the first and second contacts () are in the closed position and the medium or high voltage is applied to the switch (). The invention further relates to a switch assembly and to a method of testing such a switch.

Vacuum-insulated switch enabling testing of the vacuum, switch assembly, and testing method

Growing community of inventors

Charvieu, France

Paul Vinson