STARTING DEVICE OF BACKUP POWER SUPPLY AUTOMATIC INPUT WITH MECHANICAL INTERLOCKING Russian patent published in 2011 - IPC H01H9/24 

FIELD: electricity.

SUBSTANCE: starting device of backup power supply automatic input with mechanical interlocking (MI) includes electric contactors (1), (2) and (3), MI (4), (5), (6) and base (8). The device is equipped with additional electric contactors (3), MI (4) and (6) installed in front of electric contactor (1) and between electric contactors (2) and (3) matching unit (MU) (7). MU (7) consists of a lever (L) (13) performed with bended edges (14) and push bars (PB) (15) and (16). L (13) is fixed at the base (8) in the supports (17) with possibility of axial turning. PB (15) and (16) are hinged to bended edges (14) of L (13) on one side. The other end of PB (15) is put on a pin (11) of MI (4) yoke plate (9), and the other end of PB (16) is equipped with a pin (19) that interacts with electric contactor (3) contact system (12).

EFFECT: creating of compact starting device of backup power supply automatic input from three independent power sources with reliable mechanical interlocking of any two electric contactors with one switched on.

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