ELECTROMAGNETIC OPERATING MECHANISM Russian patent published in 2002 - IPC

FIELD: high- voltage vacuum and sulfur hexafluoride switches. SUBSTANCE: operating mechanism has magnetic system incorporating fixed main magnetic core, at least one permanent magnet, and two-section movable core, as well as two control coils. Additionally introduced fixed magnetic core with hole is placed between sections of movable core and abuts against permanent magnet. Movable core sections are joined together by means of rod passed through hole of additionally introduced fixed magnetic core. Operating air gap is formed between one of movable-core sections and additionally introduced fixed magnetic core. EFFECT: enhanced speed due to reduced mass of movable core. 1 dwg