MEDIUM- OR HIGH-VOLTAGE ELECTRICAL APPLIANCE HAVING A LOW ENVIRONMENTAL IMPACT AND HYBRID INSULATION.

摘要

The present invention concerns a medium- or high-voltage electrical appliance having a low environmental impact, comprising a sealed enclosure in which there are electrical components covered with a solid dielectric layer of variable thickness and a gaseous medium that provides electrical insulation and/or extinguishes the electric arcs that are likely to occur in this enclosure and that comprises heptafluoroisobutyronitrile in a mixture with a dilution gas.