HIGH-VOLTAGE VACUUM CIRCUIT BREAKER Russian patent published in 2016 - IPC H01H33/666 

FIELD: manufacturing technology.

SUBSTANCE: high-voltage vacuum circuit breaker comprises two independent coaxially fixed vacuum arc-quenching chambers, ends of which are closed by flanges. Contact unit of first vacuum arc-quenching chamber consists of fixed and movable contacts. Contact unit of second vacuum arc-quenching chamber consists of two movable contacts. Fixed contact of first vacuum arc-quenching chamber is rigidly connected with flange by means of current lead, and movable contact is connected to other flange by bellows. Movable contacts of second vacuum arc-quenching chamber are connected to its flanges by bellows. Movable contact of first vacuum arc-quenching chamber and closest to movable contact of second vacuum arc-quenching chamber are connected to common current lead with possibility of back-and-forth movement along axis of vacuum arc-quenching chambers. Common current lead is made in form of rod with locking bulge arranged between vacuum arc-quenching chambers. On common current conductor between flange of first vacuum arc-quenching chamber and locking bulge compression spring is installed. Other movable contact of second vacuum arc-quenching chamber is connected to drive its current conductor.

EFFECT: high operating voltage and functionality of high-voltage vacuum circuit breaker with simple design.

1 cl, 3 dwg