The invention discloses a three-fracture double-acting type high-speed permanent
magnet repulsion switch and a method of the three-fracture double-acting type high-speed permanent
magnet repulsion switch and belongs to the field of direct-current switches. The three-fracture double-acting type high-speed permanent
magnet repulsion switch comprises a switch body, high-speed electromagnetic repulsion mechanisms, permanent magnetic operating mechanisms, contact springs, insulation pull rods, opening driving circuits, closing driving circuits, a detecting unit and a
control unit. Each moving contact is connected to one end of one insulation pull rod through one contact spring, the other end of each insulation pull rod is connected with a driving rod, and each driving rod penetrates through a
metal disc in one high-speed electromagnetic repulsion mechanism and is connected with a moving iron core; the
control unit is respectively connected with a detecting circuit, the opening driving circuits and the closing driving circuits; each opening
driving circuit is connected with an opening coil and each closing
driving circuit is connected with a closing coil. According to the three-fracture double-acting type high-speed permanent magnet repulsion switch, a fracture with a large opening distance is formed at a short time and the opening speed of the switch is increased; meanwhile, according to the switch, the two moving contacts and two fixed contacts are in contact in sequence, so that when opening operation is conducted, the problems of movement dispersibility generated when multiple switches are independently driven and the like are solved.