Why abbformula circuit breakers secondary tripping

abbformula circuit breaker secondary reclosing to protect the line and the facilities from damage. The second reclosing to add rear acceleration device, can not be like a reclosing after a fault delay trip, but a fault immediately trip to protect the line and the facilities from damage. There is a secondary reclosing device of the first reclosing and only one reclosing principle is the same, adding a secondary reclosing and post-acceleration tripping. The secondary recloser is used in high-voltage long-distance power lines. Long-distance lines sometimes cause short-circuits can be automatically eliminated after the primary reclosing, fine metal line short circuit, etc., after the primary reclosing, the short-circuit current burns the metal line, eliminating the cause of the fault, the secondary reclosing on the success of the secondary reclosing.