VACUUM DEAD-TANK CIRCUIT BREAKER Russian patent published in 2013 - IPC H01H33/668 

FIELD: electricity.

SUBSTANCE: vacuum dead-tank circuit-breaker contains at least one gas-filled tank with a hollow insulator inside thus forming a sealed chamber and vacuum arc-quenching chamber (VAQC) consisting of insulator with two flanges, at that one flange is connected hermetically to the first flange of the hollow insulator. Inside VAQC insulator there are moving and fixed contacts and bellows connected hermetically to the flange of VAQC insulator; insulation traction is connected to the moving contact; it passes through VAQC bellows and moving unit of the hollow insulator. At that the second flange of the hollow insulator is connected hermetically to gas-filled tank of the circuit-breaker.

EFFECT: increasing reliability of the circuit-breaker, its environmental safety, expanding application scope to areas with severe climatic conditions.

5 cl, 2 dwg