HIGH-VOLTAGE VACUUM THREE-POLE SWITCH Russian patent published in 1997 - IPC

FIELD: high-voltage equipment. SUBSTANCE: in high-voltage vacuum three-pole switch with asynchronous breaking of pole contacts, using control levers chamber movable contacts, fixing assembly that holds the switch in the ON position, and a drive, the fixing assembly is made in the form of two aligned and identical retainers mechanically not linked with the drive and having a free-release mechanism. Each retainer, represents a bush accommodating a spring-loaded member having the shape of a body of revolution separated from the link axle by a gap, whose value depends on the value of the delay time. The ends of the link axle are installed in the lever slots for reciprocating motion and engagement with the spring-loaded member in the process of link motion. EFFECT: improved design. 4 cl, 3 dwg