LOAD SWITCH TO CHANGE OVER STAGE OF TRANSFORMER WINDINGS Russian patent published in 1999 - IPC

FIELD: electrical engineering. SUBSTANCE: proposed load switch has pairs of permanent main contacts per each phase subject to commutation. Under stationary condition one pair of permanent main contacts is closed and carries current of constant load. It is proposed to put cam disc on switching-on shaft to control mobile permanent main contacts of corresponding pairs of permanent main contacts that has control cam perch phase subject to commutation. Roller that acts with the aid of mechanical connecting members on proper mobile permanent main contact touches each of these control cams. EFFECT: improved operation of switch. 3 cl, 5 dwg