High-voltage device

Details High-voltage device High-voltage device

H - Electricity

01

H

348/1, 306/214

H01H 33/02 (2006.01) H01H 33/24 (2006.01)

Patent

CA 1161886

ABSTRACT OF THE DISCLOSURE Erosion- and decomposition-caused deterioration of exterior regions of an arc-extinguishing housing included in a high-voltage switch is eliminated or reduced. The switch also includes a stationary contact within a sealed chamber defined by the housing and a switch blade movable into and out of engagement with the stationary contact through a slit communicating with the chamber. The stationary contact and the switch blade are connectable to opposite sides of a high- voltage source. The deterioration-prone region of the housing resides between one housing portion which is connected to and is at the voltage of the stationary con- tact, and another portion which is essentially electrically floating. Deterioration is eliminated or reduced by closely capacitively coupling current to the region from a conductive projection connected to the stationary contact. The projection is closely spaced from, and may be either above or below, the region.

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