Abstract: The invention relates to a gas insulated electric apparatus comprising an insulating tube, an electric high voltage appliance arranged inside the insulating tube and a permeation barrier arranged within the insulating tube and circumferentially surrounding the electric high voltage appliance, whereby the insulating tube contains an insulation gas comprising at least 70% by volume of CO2 and/or N2 and comprising an elevated and pre-determined operating gas pressure level, and the permeation barrier comprises polyvinyl alcohol, ethylene vinyl alcohol, aluminum oxide and/or polyurethane.

Abstract: The present invention relates to an electrical apparatus for the generation, the transmission, and/or the distribution of electrical energy comprising a housing enclosing an electrical apparatus interior space, at least a portion of the electrical apparatus interior space forming an insulation space, in which an electrical component is arranged and which contains an insulation medium surrounding the electrical component. The insulation medium contains an organofluorine compound. The electrical apparatus further comprises an adsorber comprising a zeolite for removing at least a part of a contaminant and/or decomposition product resulting from arcing or partial discharge in the insulation space. The apparatus is characterized in that the zeolite contains: less than 0.5 at % of magnesium (Mg) less than 0.5 at % of calcium (Ca) and less than 0.5 at % of iron (Fe).

Abstract: A container for storing and transporting a dielectric insulation medium, including: a container interior for containing the dielectric insulation medium, and connecting means for connecting the container to an electrical apparatus of medium or high voltage and filling a housing of the electrical apparatus with the dielectric insulation medium, said dielectric insulation medium being a mixture of an organofluorine compound or a mixture of organofluorine compounds as component A, the molar percentage of component A being in a range from 1 to 15 mol %, and a carrier gas compound or a mixture of carrier gas compounds other than an organofluorine compound as component B. The component B may include nitrogen, the molar percentage of nitrogen in the dielectric insulation medium being at least 65 mol %, and the minimum storage and transportation temperature of the container is equal or higher than the cricondentherm of the insulation medium.

Abstract: An instrument transformer of a type designed for using an insulation medium containing SF6, said instrument transformer including a housing enclosing an insulation space and further including an electrical active part arranged in the insulation space, said insulation space containing a dielectric insulation medium. The instrument transformer is characterized in that the dielectric insulation medium contains a gaseous mixture including from 3 to 5 mol-% of heptafluoroisobutyronitrile, from 4 to 11 mol-% of oxygen (O2) and from 84 to 93 mol-% of nitrogen (N2).