COMPOSITE ARC SHIELDS FOR VACUUM INTERRUPTERS AND METHODS FOR FORMING SAME

摘要

The disclosed concept pertains to vacuum interrupters and arc-resistant shields. The arc-resistant shields are positioned in between a ceramic insulator. Each end of the arc-resistant shield is hermetically sealed to the ceramic insulator. The arc-resistant shield includes an outer surface and an inner surface. The inner surface includes an arc-resistant material. Disposed within the arc-resistant shield is a pair of electrode assemblies which are separable to establish arcing. In certain embodiments, the arc-resistant material is copper-chromium alloy.

主权项

1. An arc-resistant shield for a vacuum interrupter, the arc-resistant shield comprising:
a shield structure having a first end, an opposite second end, an interior surface and an exterior surface; and an arc-resistant material present on the interior surface of the shield structure,wherein the arc-resistant shield is positioned between a first ceramic insulator and a second ceramic insulator, the first end of the shield structure being hermetically sealed to the first ceramic insulator and the opposite second end of the shield structure being hermetically sealed to the second ceramic insulator, the arc-resistant shield defining an inner cavity, first and second electrode assemblies disposed in said cavity and being separable to establish arcing.