H - Electricity – 01 – C
Patent
H - Electricity
01
C
H01C 7/12 (2006.01)
Patent
CA 2324370
The inventive surge diverter has an axially symmetrical active part (2) which is located between two connection armatures (1, 2). This active part (2) contains cylindrical varistor elements (12) which are stacked on top of each other, and an axially symmetrical connecting element (13) which is situated in the diverter active part (2) between two consecutive varistor elements (12) and consists of an electrically conductive material. At least four bearing points (16, 16') are formed in the connecting element (13), said bearing points being evenly distributed around the axis in a circumferential direction. Two first bearing points (16) each support one of two first loops (15) which exert a contact force on the connecting element (13) and varistor elements (12) placed on the connecting element (13). Two second bearing points (16') each support one of two second loops (15) which exert a contact force on the connecting element (13) and varistor elements (12) located under the connecting element (13). A surge diverter of this kind can be of a considerable construction height and still have excellent mechanical and electrical properties.
L'invention concerne un parasurtension qui comporte une partie active (2) à symétrie axiale placée entre deux armatures de raccordement (1, 2). Cette partie active (2) contient des varistors (12) cylindriques empilés, ainsi qu'un élément de liaison (13) à symétrie axiale, constitué d'un matériau conducteur, placé entre deux varistors (12) consécutifs. Dans cet élément de liaison (13) sont formées au moins quatre zones de support (16, 16') réparties régulièrement dans le sens circonférentiel. Deux premières zones de support (16) soutiennent chacune une de deux premières boucles (15) qui exercent une force de contact sur l'élément de liaison (13) et sur les varistors (12) reposant sur l'élément de liaison (13). Deux secondes zones de support (16') soutiennent chacune une de deux secondes boucles (15) qui exercent une force de contact sur l'élément de liaison (13) et sur les varistors (12) se trouvant sous l'élément de liaison. Un tel parasuralimentation peut présenter une grande hauteur et se caractérise toutefois par des bonnes propriétés mécaniques et électriques.
Abb Hochspannungstechnik Ag
Asea Brown Boveri Ag
Ogilvy Renault
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