VACUUM INTERRUPTER OF VACUUM CIRCUIT BREAKER AND METHOD FOR DETECTING THE DEGREE OF VACUUM IN THE SAME

摘要

PURPOSE: A vacuum interrupter of a vacuum circuit breaker and a method for detecting a vacuum state are provided to easily detect the deterioration of the vacuum state in the vacuum interrupter by detecting the rise of vacuum pressure in the vacuum circuit breaker in a live line without breaking the inner circuit of the vacuum circuit breaker. CONSTITUTION: A cylindrical body receives a fixed electrode(104) and a movable electrode(102). A movable seal cup(109) is coupled with one end of the body unit. A fixed seal cup(107) is coupled with the other end of the body unit. A detecting pin(200) for monitoring the deterioration of the inner vacuum state of the vacuum interrupter is attached to the movable seal cup. An optical sensor(120) and a detector(130) are positioned on the upper side of the movable seal cup to measure the position variation of the detecting pin.