公开(公告)号：US3555225A

公开(公告)日：1971-01-12

申请号：US3555225D

申请日：1967-09-25

Applicant: WESTINGHOUSE ELECTRIC CORP

Inventor： SAFFOLD THOMAS F ,  FRINK RUSSELL E

IPC: H01H33/90 ,  H01H33/915 ,  H01H33/70

CPC classification number: H01H33/903

Abstract: A fluid-flow circuit interrupter of the piston type has a serially related pressure-generating arc to mechanically assist the fluid-driving motion of the piston member to offset the arcing pressure generated within the interrupting nozzle by the main current arc disposed therein. The fluid-driving piston is connected by piston rods to the movable contact structure and hence to the operating mechanism. The interrupting device functions to establish a main current arc between the separable main contacts and additionally a pair of serially related arcs, in electrical parallel, on the rear side of the fluid-driving piston to assist the latter in its fluid-driving motion by the pressure generated.