Vacuum interrupter with transition areas between metal housing parts and ceramic housing parts covered by insulating material

摘要

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.

主权项

1. 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.