MEDIUM OR HIGH VOLTAGE ELECTRICAL APPARATUS WITH GAS INSULATION COMPRISING SULFUR HEXAFLUORIDE AND ANOTHER FLUORINE COMPOUND

摘要

The present invention relates to a medium or high voltage electrical apparatus comprising a sealed enclosure in which there are electrical components and a gas mixture ensuring electrical insulation and / or extinguishing of electric arcs likely to occur in this enclosure, the mixture gas comprising SF6 and a fluorinated compound having a dielectric strength greater than SF6 and selected from the group consisting of fluoro-nitriles, polyfluorinated oxiranes, perfluorocarbons comprising at least two carbon atoms and mixtures thereof.