CONTACT SYSTEM OF VACUUM ARC-QUENCHING CHAMBER Russian patent published in 1997 - IPC

FIELD: electric engineering. SUBSTANCE: contact system has contacts at least one of which is separated into sequence of tangentially bent lugs by cuts which run in direction from periphery to center. Is greater than 0.8, r₁/R and R₂/R is greater than 0.5, where R is contact radius, r₁ and r₂ is distance between center of contact to tangents in direction of middle longitudinal line (which length is l) for each lug in two points. First point is located at peripheral end of this line, second one is space by 0.5 from it. EFFECT: increased functional capabilities. 7 dwg, 1 tbl