Abstract: A power capacitor unit for high-pressure applications is provided. The power capacitor unit includes a housing, a plurality of capacitor elements connected to each other and arranged inside the housing, a dielectric liquid (L), a solid electrical insulation system arranged to electrically insulate each capacitor element, a busbar, a plurality of fuse wires, each fuse wire having a first end connected to a respective capacitor element and a second end connected to the busbar (B), wherein the capacitor elements, the solid electrical insulation system, and the fuse wires are immersed in the dielectric liquid (L). Each fuse wire has a plurality of first sections that are in physical contact with the electrical insulation system, and wherein each fuse wire has a plurality of second sections without physical contact with the solid electrical insulation system.

Abstract: A power capacitor unit for high-pressure applications is provided. The power capacitor unit includes a housing, a plurality of capacitor elements connected to each other and arranged inside the housing, a dielectric liquid (L), a solid electrical insulation system arranged to electrically insulate each capacitor element, a busbar, a plurality of fuse wires, each fuse wire having a first end connected to a respective capacitor element and a second end connected to the busbar (B), wherein the capacitor elements, the solid electrical insulation system, and the fuse wires are immersed in the dielectric liquid (L). Each fuse wire has a plurality of first sections that are in physical contact with the electrical insulation system, and wherein each fuse wire has a plurality of second sections without physical contact with the solid electrical insulation system.

Abstract: A capacitor element for a power capacitor. The capacitor element includes a plurality of series-connected cylindrical sub-elements. Each sub-element includes at least two strips of dielectric material wound in a number of turns. A layer of electrically conductive material is disposed between the turns of the winding. The sub-elements are disposed one outside the other as seen in a direction transversely to the plane of the strip. A strip in an outermost sub-element is longer than the strip in each inwardly lying sub-element. A power capacitor includes a plurality of the capacitor elements, and a capacitor battery includes a plurality of the power capacitors. A method of manufacturing the inventive capacitor element and the use of the inventive power capacitor.

Abstract: A capacitor element for a power capacitor. The capacitor element includes a plurality of series-connected cylindrical sub-elements. Each sub-element includes at least two strips of dielectric material wound in a number of turns. A layer of electrically conductive material is disposed between the turns of the winding. The sub-elements are disposed one outside the other as seen in a direction transversely to the plane of the strip. A strip in an outermost sub-element is longer than the strip in each inwardly lying sub-element. A power capacitor includes a plurality of the capacitor elements, and a capacitor battery includes a plurality of the power capacitors. A method of manufacturing the inventive capacitor element and the use of the inventive power capacitor.

Abstract: A power capacitor for high voltage and including at least one capacitor element that has improved electrical properties and that allows simple manufacture. Each capacitor element has a substantially circular-cylindrical shape. The inside of the container has a corresponding shape to closely surround each capacitor element. In addition, each capacitor element is oriented with the axial direction coinciding with the axial direction of the container. A capacitor bank includes a plurality of the power capacitors, and uses of one or more of the invented power capacitors can be used as a component in electrical installations.

Abstract: A capacitor element (20) for a power capacitor with a dielectric film layer (3) and an electrode layet arranged on each flat side of the film layer, which electrode layers are divided into at least three metallized areas (4, 9, 10), separate from each other, in order to form an inner series connection arranged to conduct a load current, of which thee areas at least one is divided into segments (5) separated by non-metallized sections (6), and at least one bridge (7) arranged to electrically connect two of the segments together. In accordance with the invention the bridge is so arranged that, in the area divided into segments, the load current appears substantially only in the segments. The invention also relates to a power capacitor with such a capacitor element and also a metallized tape for such a power capacitor.

Abstract: A capacitor element for a power capacitor having a two foils (3, 5) of metal forming a pair of electrodes, and also films (2a, 2b, 4a, 4b) of dielectric material forming the dielectric medium of the capacitor element. The capacitor element is produced by the foils and films being arranged one on top of the other and wound to a roll, so that the capacitor element displays a first end surface where one of the foils (5) has a long edge (10) indented between two of the films (2a, 4b), and also a second end surface where the other foil (3) has a long edge (9) indented between two of the films (2b, 4a), each of which indented long edges has an edge portion (15; 16) surrounded by an elongate field equalizer (18; 19) of dielectric material surrounding the edge portion.

Abstract: The present invention relates to a power capacitor for high voltage and comprises at least one capacitor element (2a-2d). The object is to achieve a capacitor with improved electrical properties and which allows simple manufacture. According to the invention, each capacitor (2a-2d) has a substantially circular-cylindrical shape. The inside of the container (1) has a corresponding shape so as to closely surround each capacitor element (2a-2d). In addition, each capacitor element (2a-2d) is oriented with the axial direction coinciding with the axial direction of the container. The invention also relates to a capacitor bank (12) comprising a plurality of power capacitors of the invented kind, and to uses of one or more of the invented power capacitors as a component in electrical installations.

Abstract: A capacitor element for a power capacitor having a plurality of films of dielectric material forming two adjacent dielectric layers, and also a plurality of electrodes of metal material, two of which are situated between the two adjacent dielectric layers spaced from and beside each other to produce and area which is free from metal material. According to the invention a permanent connection of a dielectric material is arranged in the area and unites the dielectric layers with each other. The invention also relates to a method for producing such a capacitor element, and a power capacitor having such a capacitor element.

Abstract: A capacitor element for a power capacitor having a plurality of films (4, 5) of dielectric material forming two adjacent dielectric layers, and also a plurality of electrodes (6, 7, 8) of metal material, two (6, 7) of which are situated between the two adjacent dielectric layers spaced from and beside each other to produce an area (9) which is free from metal material. According to the invention a permanent connection (24) of a dielectric material is arranged in said area and unites the dielectric layers with each other. The invention also relates to a method for producing such a capacitor element, and a power capacitor comprising such a capacitor element.