ARC-CONTROL VACUUM CHAMBER Russian patent published in 2007 - IPC H01J33/02 

FIELD: high-voltage electrovacuum engineering; arc-control vacuum chambers, including direct-current ones, for various switches used in power engineering, industry, and transport.

SUBSTANCE: vacuum current switch incorporating proposed vacuum chamber with magnetic field that serves as OFF-operation factor applied to high-voltage gap formed by axisymmetrical electrodes disposed in insulating shell, at least one of electrodes being made movable due to connection to shell through bellows affording high-voltage circuit closing and opening during its reciprocation, has electrode system built of two basic parts: (a) contact part proper with electrodes held in one of two states (open or closed) and (b) permanently open electrode part (arc-control chamber) separated from contact members and made in the form of two electrodes (such as coaxial ones) installed so that as they move away from part (a), discharge current path increases and currents in adjacent electrodes flow in opposite directions, and direction of magnetic field set up due to them affords arc movement from part (a) to arc-control chamber. Such design of arc-control chamber provides for disconnecting currents ranging between 300 and 10 000 A at voltages up to 10 kV.

EFFECT: facilitated manufacture, reduced size and mass of chamber.

3 cl, 1 dwg