ELECTROMAGNETIC DRIVE Russian patent published in 2004 - IPC

FIELD: electrical engineering, concerns bistable electromagnetic drives for high-voltage switches.

SUBSTANCE: the electromagnetic drive has a magnetic system with a running air gap including a fixed main magnetic core, at least one permanent magnet, movable core made of two parts, with a fixed additional magnetic core adjoining the permanent magnet with a core installed between them, as well as two control coils. A loose-fitted push rod is provided between the mentioned parts, it passes through the mentioned hole in the fixed additional magnetic core and provides a distance equal at least to the total extent of the running gap between the mentioned parts of the movable core and the additional magnetic core in the axial direction.

EFFECT: simplified servicing and enhanced operativeness of replacement of the control coils in the bistable electromagnetic drive of a high-voltage switch.

7 cl, 8 dwg