Abstract:
The disclosed vacuum switch has features that give it exceptional high-voltage withstand ability even after its contacts have been roughened by the effects of arcing. Both contacts of the switch are arranged to move during opening and closing operations. When the switch is fully-open, the contacts are located in shielded positions behind the front faces of shielding electrodes which respectively surround the contacts. During closing, each of the two contacts is driven out of its fully-open shielded position into the gap between the two shielding electrodes, engaging the other contact when the contacts are approximately midway between the shielding electrodes.
Abstract:
Discloses a vacuum-type circuit interrupter in which the contacts are constructed to revolve any arc located between the contacts. Each contact is a disc-shaped member divided into a plurality of circumferentially spaced segments, each comprising a radially extending body portion and a leg portion at the radially outer end of the body portion extending periphery of the discshaped member. Each leg portion is provided with an arc-running extension that extends peripherally of the disc-shaped member and overlaps the adjacent segment on the side of the adjacent segment facing the other contact.