HIGH-VOLTAGE ELECTRIC SWITCH Russian patent published in 1995 - IPC

FIELD: commutation devices. SUBSTANCE: electric arc quenching chamber 13 of electric switch with rotating arc and self-quenching extension has long housing which is pressurized from both sides with face caps 17, 18. Tube contacts 14, 15 and arc magnetic quenching coil 22 are positioned inside housing 12 and are coaxial to it. Zone of arc quenching is determined by separation zone between contacts 14 and 5. Barrel is positioned close to wall of housing 12 at height of arc quenching zone. This barrel is spaced form housing by ring-shaped space which provides connection between upper part 28 of chamber 13 and lower par 29 of said chamber. These parts of chamber are situated outside arc quenching zone. Space provides flow of gases between both parts 28 and 29. Edges which are mounted in lower part 29 slow down rotation of gas and direct them towards arc quenching zone. EFFECT: increased functional capabilities. 9 cl, 4 dwg