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    Fluid-blast circuit interrupter with piston assembly and electromagnetic driving means
    4.
    发明授权
    Fluid-blast circuit interrupter with piston assembly and electromagnetic driving means 失效

    公开(公告)号：US3590188A

    公开(公告)日：1971-06-29

    申请号：US3590188D

    申请日：1966-09-01

    申请人： WESTINGHOUSE ELECTRIC CORP

    发明人： FRINK RUSSELL E ,  FISCHER WILLIAM H

    IPC分类号： H01H33/88 ,  H01H33/915 ,  H02B7/00 ,  H02B11/04 ,  H02B11/20 ,  H01H33/90

    CPC分类号： H02B7/00 ,  H01H33/882 ,  H02B11/04 ,  H02B11/20

    摘要： An improved piston-type fluid-blast circuit interrupter is provided having a stationary operating cylinder, within which reciprocates a movable piston assembly carrying the movable contact assembly of the interrupter. Electromagnet means including three accelerating coils, one movable with the piston assembly, another located in the closed end of the operating cylinder, and a third coil movable with a driver unit, are all connected in series during the opening operation of the interrupter. The driver unit is mechanically connected through the closed end of the operating cylinder with the movable piston assembly. The magnetic attraction between the piston coil and the coil at the closed end of the operating cylinder, and the magnetic repulsion forces between the coil at the closed end of the operating cylinder and the coil carried by the driver unit, all contribute to magnetically assisting the fluid-driving motion of the piston assembly and so effecting interruption. The movable contact structure comprises a main movable contact and an inner movable arcing probe movable together and insulated from each other with the three accelerating coils connected between the main movable contact and the movable arcing probe in the closed position of the interrupter.