Title: Disjoncteur a autocompression reduite
Application Number: 95106306 Application Date: 1995.05.18
Publication Number: 1118107 Publication Date: 1996.03.06
Approval Pub. Date: 2001.10.31 Granted Pub. Date: 2001.10.31
International Classifi-cation: H01H33/91
Applicant(s) Name: GEC Alsthom T Address:
Inventor(s) Name: Denis Dufournet
Attorney & Agent: MA JIANGLI
Abstract:
    A circuit-breaker including two arcing contacts that co-operate with each other, at least one of which is part of a moving contact assembly that is secured to a drive member and that is constituted by a first tube carrying the moving arcing contact at its end, and by a second tube that is coaxial with the first tube so as to define firstly an expansion chamber on one side of an annular wall, and secondly a compression chamber on the other side of the annular wall, the compression chamber being closed by a piston. A compression device is provided for compressing the gas in the compression chamber during a first portion of the displacement of the moving contact assembly, and a pressure-reducing device is provided for reducing the pressure of the gas in the compression chamber during a second portion of the same displacement of the moving contact assembly.
Time: 8