Power capacitor

Details Power capacitor Power capacitor

H - Electricity

01

G

H01G 4/224 (2006.01) H01B 17/50 (2006.01) H01B 17/54 (2006.01) H01G 4/30 (2006.01) H01G 4/38 (2006.01)

Patent

CA 2548589

A power capacitor comprising at least one capacitor element (2a-2d) enclosed in a container (1, 22-22c), wherein the container is of a material which substantially comprises a first polymer material. Further, the container is cylindri~cal and provided in its surface with creepage distance~extending protrusions (23-23e) of a second polymer material. The protrusions are formed with respect to their thickness and radial length so as to cool the capacitor. In a method for manufacturing such a power capacitor, a substantially cylindrical container is made of a material which substan~tially comprises a first polymer material. The container (1, 22-22c) is provided on its envelope surface with creepage distance-extending protrusions (23-23e) of a second polymer material and the capacitor elements are encapsulated in the container.

L'invention concerne un condensateur de puissance comprenant au moins un élément (2a-2d) de condensateur placé dans un boîtier (1, 22-22c), le boîtier étant fait d'un matériau contenant sensiblement un premier matériau polymérique. Le boîtier est, de plus, cylindrique et présente sur sa surface des éléments saillants (23-23e) d'extension de la distance de glissement faits d'un second matériau polymérique. Lesdits éléments saillants sont formés en épaisseur et longueur radiale de manière à refroidir le condensateur. Dans un procédé de fabrication d'un condensateur de puissance de ce type, un boîtier sensiblement cylindrique est fait d'un matériau contenant sensiblement un premier matériau polymérique. Le boîtier (1, 22-22c) présente sur sa surface de revêtement des éléments saillants (23-23e) d'extension de la distance de glissement faits d'un second matériau polymérique, et les éléments de condensateur sont encapsulés dans le boîtier.

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