Vacuum interrupter with transition areas between metal housing parts and ceramic housing parts covered by insulating material
AssigneeABB Technology AG
InventorDietmar Gentsch
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Abstract
A vacuum interrupter is disclosed with transition areas between metal housing parts and ceramic housing parts covered by insulating material. To enhance dielectric performance and field grading behavior, the insulating material can extend as a tube or a multilayer tube design over at least nearly a complete length of the vacuum interrupter or vacuum device arrangement. The insulating material can be filled or at least covered at an inner surface which comes into close contact with the vacuum interrupter or vacuum device surface, with metal and/or conductive metal oxides.
Claims13
A vacuum interrupter having multiple serial ceramic elements comprising:
- transition areas between metal housing parts and ceramic housing parts of the multiple serial ceramic elements covered by insulating material, wherein the insulating material extends as a common tube over at least nearly a complete length of the vacuum interrupter;
- and
- the insulating material is filled or at least covered at an inner surface which is closest to the vacuum interrupter housing parts, with metal and/or conductive metal oxides, or material with limited conductivity,
- wherein the common tube is a cold-shrink tube or a warm shrink tube.
A method for manufacturing a vacuum interrupter having multiple serial ceramic elements formed as a serial arrangement of multiple vacuum interrupters, the method comprising:
- filling completely, or covering at an inner surface, an insulating material which is closest to the vacuum interrupter or vacuum device surface, with metal and/or conductive metal oxides and forming the insulating material as a tube of cold or warm shrinking insulating material;
- and
- placing the tube over at least nearly a complete length of the vacuum interrupter to form a covered serial arrangement of multiple vacuum interrupters.
Dependencies are inferred from the claim text.