Schneider Electric Industries Sas

Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Areva T & D Sas

Schneider Electric Energy France

Romain Maladen

Daniel Piccoz

Yannick Kieffel

Alain Girodet

Olivier Jean Poncelet

Daniel Getto

Mathieu Nesme

François Gentils

Rainer Stein

Mehrdad Hassanzadeh

Jérôme Douchin

Francois Gentils

Karim Helal

Manuel Ferreira Da Costa

Yu-Derek Liu

Patrick Chambaz

Antoine Vicaigne

Mathieu Marquet

Bruno Colin

Alain Quemin

This invention relates to a treatment process for a material chosen from among a polyamide, a polyester and a poly(meth)acrylate. According to the invention, this process comprises a step in which contact is made between this material and a polar organic solvent in a supercritical fluid. This invention also relates to a process for manufacturing a part from a material chosen from among a polyamide, a polyester and a poly(meth)acrylate in a divided form. Finally, the invention relates to use of the material treated by the treatment process and to use of the part manufactured by the manufacturing process in the low voltage, medium voltage or high voltage electrical industry.

Process for treating a material chosen from among a polyamide, a polyester and a poly(meth)acrylate

A current switch arranged between a first power line segment and a second power line segment, including: a first switch element, including a main contact and a secondary contact rigidly connected to the main contact, mounted so as to be mobile on the first power line segment so as to follow a separating travel between a closed position and an open position and a second switch element mounted so as to be freely mobile on the second power line segment and forced towards a rest position by elastic loading.

Optimized current switch on power line

A method for increasing the dielectric withstand strength in the enclosure E of an electrical apparatus, this method consisting in placing in the enclosure a dielectric material in liquid or solid form, then in bringing this material to a temperature and/or a pressure allowing for its total or partial evaporation in the enclosure. This method includes a device for retaining the abovementioned material in its container during the handling allowing the placement of the container in the enclosure E, and a device for inducing the evaporation of this material at a certain moment after this placement in the enclosure E and for allowing the dispersion of the gases resulting from this evaporation in the enclosure E.

Method for increasing the dielectric withstand strength in an electrical apparatus, and apparatus having an improved dielectric strength according to this method

There is provided a method of providing an electric insulating and/or electric arc extinguishing gaseous medium within a sealed enclosure of a medium-voltage electrical device comprising electrical components, the method including enclosing the gaseous medium in the sealed enclosure, wherein the gaseous medium includes a hydrofluoroolefin comprising three carbon atoms and a fluoroketone comprising five carbon atoms. There is also provided a medium-voltage electrical device, including a sealed enclosure comprising electrical components; and a gaseous medium provided within the sealed enclosure, the gaseous medium being an electric insulating and/or electric arc extinguishing medium, wherein the gaseous medium comprises a hydrofluoroolefin comprising three carbon atoms and a fluoroketone comprising five carbon atoms.

Mixture of hydrofluoroolefin and fluoroketone for use as an insulation and/or ARC extinguishing medium and a gas insulated medium-voltage electrical device comprising same

The invention relates to the use of a mixture comprising a hydrofluoroolefin, possibly associated with a dilution gas, as a gaseous electrical insulation and/or electrical arc extinguishing medium in substation medium-voltage electrical device. It also relates to medium-voltage electrical device in which electrical insulation and/or electrical arc extinguishing is (are) performed by a gaseous medium comprising hydrofluoroolefin, possibly associated with a dilution gas.

Use of a mixture comprising a hydrofluoroolefin as a medium-voltage arc-extinguishing and/or insulating gas and medium-voltage electrical device comprising same

An electrical apparatus for a medium- to high-voltage current transport line having a gas insulation including: a sealed housing filled with an electrically insulating gas including at least one fluorinated compound such as a fluoroketone, at least one electrical component arranged inside the inner space of the housing, and a mechanism regulating an amount of the fluorinated compound inside the inner space of the housing. The regulating mechanism includes a heater, heating a liquid resulting from condensation of the fluorinated product present in the insulating gas, to cause at least a portion of the liquid to vaporize.

Electrical apparatus having a gas insulation containing a fluorinated compound

The invention relates to the use of a mixture of a hydrofluoroolefin and a hydrofluorocarbon, optionally combined with another fluorinated gas, as an electrical insulation medium and/or an electric arc extinguishing medium in a medium-voltage electrical apparatus. The invention also relates to a medium- or high-voltage electrical apparatus in which such a mixture provides electrical insulation and/or electric arc extinguishing.

Mixture of hydrofluoroolefine and hydrofluorocarbide to improve the internal ARC resistance in medium and high voltage electric apparatus

Growing community of inventors

Macon, France

Romain Maladen