Hitachi Energy Switzerland Ag

Hitachi Energy Ltd

Abb Schweiz Ag

Abb Power Grids Switzerland Ag

Saskia Scheel

Thomas Alfred Paul

Toufann Chaudhuri

Branimir Radisavljevic

Nitesh Ranjan

Emmanuel Logakis

Anna Di-Gianni

Yann Cuenin

Lejun Qi

Chau-Hon Ho

Charles Doiron

Felix Bandalo

Valeria Teppati

Biswajit Singh

Daniel Over

Richard-changyu Zhang

Philipp Simka

Anna Di Gianni

Spiros Tzavalas

The present invention relates to a dielectric-insulation or arc-extinction fluid for an apparatus for the generation, the transmission, the distribution and/or the usage of electrical energy, the fluid being a mixture comprising a fluoroolefin and oxygen. According the fluoroolefin is a monohydrofluoroolefin containing from 4 to 5 carbon atoms, the hydrogen atom being bound to a carbon atom of the double bond or directly adjacent to the double bond.

Dielectric-insulation or arc-extinction fluid

A wet capacitor is provided, and the use of an insulation fluid composition in such a capacitor. The capacitor includes a package of a metal foil and a polymeric insulating film, or of a metallized polymeric film, wherein the insulation composition includes a synthetic or natural aromatic oil and a polymer. The insulation composition is configured to undergo a thermo-reversible oil-to-gel transition at a predefined gel-point temperature. Further, methods of producing such wet capacitors are provided, optionally including additional filling materials, and methods of sealing leaks in such capacitors.

Capacitor with insulation composition showing thermo-reversible oil-to-gel-transition

The present invention relates to the use of a linear octafluorobutene as a dielectric compound in an environmentally safe dielectric-insulation or arc-extinction fluid for an apparatus for the generation, the transmission, the distribution and/or the usage of electrical energy.

Use of a linear octafluorobutene as a dielectric compound in an environmentally safe dielectric-insulation or arc-extinction fluid

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Lenzburg, Switzerland

Saskia Scheel