Importance

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Abstract

A high voltage electric switch includes an insulated housing with an opening therethrough and an interior surface. The housing has an upper open end and a lower open end. A conductive upper terminal pad has a downwardly extending bar, wherein the upper terminal pad encloses the upper open end. A vacuum interrupter has a stationary stem that is electrically connected to the bar, and a moving stem extending in a direction opposite the stationary stem. A dielectric material is permanently bonded to at least a portion of the vacuum interrupter and substantially fills any voids between the vacuum interrupter and the interior surface. The dielectric material and the vacuum interrupter are selectively removable from the housing when the upper terminal pad is removed. A moving end assembly is connected to the moving stem and includes a highly conductive outer sleeve which receives a high strength inner sleeve having a cross-hole therethrough. A flexible shunt assembly is connected to the outer sleeve with a conductive lower terminal pad substantially enclosing the lower open end. The lower terminal pad has an opening therethrough to allow access to the flexible shunt connected to the lower terminal pad. A pull rod axially extends through the lower terminal pad opening, wherein the pull rod is connected to a pin with a cross-pin slot. The pin is connected to the inner sleeve by a cross-pin received through the cross-hole and the cross-pin slot. An over-travel spring received within the inner sleeve and biasing the slotted pin attached to the pull rod. Axial movement of the pull rod axially moves the moving stem to connect or disconnect with the stationary stem within the vacuum interrupter.

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First Claim