VACUUM SWITCH Russian patent published in 2004 - IPC

FIELD: electrical engineering, remote control over electric drives in electric networks. SUBSTANCE: given vacuum switch has at least one arc chute housed in body, electromagnetic drive with U-shaped electromagnet interacting with armature anchored on outer ends of levers hinged to mobile leads of chamber and immobile lead of camber is hinged to angle piece fixed in body. Hinge fixing immobile lead can have shape of hemisphere facing chamber. Angle piece is placed between hemisphere and chamber and is pressed against hemisphere by spring which effort is chosen from mathematical expression. EFFECT: increased reliability of attachment of hinge to body. 2 cl, 1 dwg