An electric component for an electric system that includes a working component, a housing that encloses the working component, and an electrical insulator that is disposed between the housing and the working component.

An electric component for an electric system that includes a working component, a housing that encloses the working component, and an electrical insulator that is disposed between the housing and the working component.

A cable includes an inner conductor and a dielectric layer extending around the inner conductor. The dielectric layer includes a linearly-stretched polypropylene film having a porous structure that includes a plurality of pores that extend through a thickness of the linearly-stretched polypropylene film. The dielectric layer includes air molecules trapped within the pores of the linearly-stretched polypropylene film such that the dielectric layer includes polypropylene and air. The cable includes an outer conductor extending around the dielectric layer.

A cable that includes a conductor defining a hollow interior, a casing surrounding the conductor, an electrical insulator positioned between the conductor and the casing, and a fluid positioned within the hollow interior of the conductor.

A cable that includes a conductor defining a hollow interior, a casing surrounding the conductor, an electrical insulator positioned between the conductor and the casing, and a fluid positioned within the hollow interior of the conductor.

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.

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.