A device or component thereof is provided for generation, transmission, distribution and/or use of electrical energy. In at least one insulation space formed within the device, there is a current-conducting component. The insulation space includes a dielectric insulation medium that surrounds the current-conducting component. This insulation medium includes a) at least one organofluorine compound selected from the group consisting of fluoroketones, fluoronitriles, and mixtures thereof and b) a carrier gas comprising at least one component selected from the group consisting of air, an air component, CO.sub.2, or a mixture of these components. The device includes at least one gas seal for sealing of the at least one insulation space from a further space. The gas seal includes butyl rubber as seal material.

A liquid containment device is provided for a liquid filled transformer having a tank and a bushing attached to a surface of the tank, the bushing including a terminal having a terminal head including a terminal head opening and a porcelain bushing. A terminal head attachment is attached to the terminal head of the bushing. A housing is provided having an open end, a closed end and a contact pole opening formed on the closed end, the housing encapsulating the bushing and the terminal head attachment. A contact pole is attached to the terminal head attachment and extends through the contact pole opening of the housing. A contact is attached to the contact pole and a housing fastener is fastened on the contact pole to press the housing onto the surface of the tank.

A high-voltage bushing can be plugged into a bushing socket of an electrical device of a high-voltage installation. The high-voltage bushing has an internal conductor, an insulating body which at least partly encloses the internal conductor, and a plug-in section for plugging the high-voltage bushing into the bushing socket. A heat pipe is provided in the internal conductor. The heat pipe is at least partly filled with a vaporizable cooling liquid and the heat pipe extends into the plug-in section. A high-voltage installation having the high-voltage bushing is also provided.

A three-phase reactor according to an embodiment includes a first plate iron core and a second plate iron core disposed oppositely to each other; a plurality of cylindrical iron cores disposed between the first plate iron core and the second plate iron core orthogonally to the first plate iron core and the second plate iron core, the iron cores being disposed rotationally symmetrically with respect to an axis equidistant from central axes of the iron cores, as a rotation axis; and a plurality of coils each wound on each of the iron cores.

Methods and compositions for the production of dielectric fluids from lipids produced by microorganisms are provided, including oil-bearing microorganisms and methods of low cost cultivation of such microorganisms. Microalgal cells containing exogenous genes encoding, for example, a sucrose transporter, a sucrose invertase, a fructokinase, a polysaccharide-degrading enzyme, a lipid pathway modification enzyme, a fatty acyl-ACP thioesterase, a desaturase, a fatty acyl-CoA/aldehyde reductase, and/or an acyl carrier protein are useful in manufacturing dielectric fluids.

A diverter switch, which is for an on-load tap-changer, includes a housing; and a carrier. The carrier has elements configured to carry out a diverter switch operation. The carrier and the elements are at least partly encapsulated in the housing.

A transformer comprising at least two phase windings, each phase winding having coil turns around a coil axis, wherein the at least two phase windings comprise at least a first type of phase winding and a second type of phase winding, each of the first type of phase winding and the second type of phase winding comprising a plurality of winding portions comprising at least a first winding portion and a second winding portion, the first type of phase winding comprising a first winding portion having a first winding portion stiffness and a second winding portion having a second winding portion stiffness, and characterized in that a stiffness difference between said first winding portion stiffness and said second winding portion stiffness of said first type of phase winding is such that the acoustic power is minimized at said main frequency.

A transformer comprising at least two phase windings, each phase winding having coil turns around a coil axis, wherein the at least two phase windings comprise at least a first type of phase winding and a second type of phase winding, each of the first type of phase winding and the second type of phase winding comprising a plurality of winding portions comprising at least a first winding portion and a second winding portion, the first type of phase winding comprising a first winding portion having a first winding portion stiffness and a second winding portion having a second winding portion stiffness, and characterized in that a stiffness difference between said first winding portion stiffness and said second winding portion stiffness of said first type of phase winding is such that the acoustic power is minimized at said main frequency.

An igniter assembly comprising an ignition coil assembly connected to a firing end assembly by an extension, with a valve assembly disposed in a pressure chamber of the extension, is provided. The valve assembly includes a valve stem biased toward the ignition coil assembly by a spring to seal the pressure chamber. The valve assembly is used to evacuate contents from the pressure chamber by pressing the valve stem toward the spring and allowing contents of the pressure chamber to travel through and past the valve stem and out of the pressure chamber. The valve assembly is also used to fill the pressure chamber with an insulating medium by pressing the valve stem toward the spring and allowing the insulating medium to travel through and past the valve stem and into the pressure chamber after evacuating the contents out of the pressure chamber.

An inductor includes a coil including a winding section and extended sections, a body containing the coil and having a bottom surface and end surfaces adjacent to the bottom surface and opposed to each other, and outer electrodes on at least the bottom surface and connected to the extended sections. The winding-axis direction of the coil intersects with the bottom surface. The conductor has a cross section with a rectangular shape defined by thickness and width and has first surfaces defined by its extending direction and the thickness direction and second surfaces defined by the extending direction and the width direction. The winding section is spirally wound such that the second surfaces are on an outer side and on an inner side, respectively, and is wound in two tiers connected in their innermost locations, and both ends are in outermost locations in the tiers, respectively.