Arcing Behaviors in the Large-capacity HV SF6 Gas-blast Interrupters


  • S. A. Averyanova Peter the Great St. Petersburg Polytechnic University
  • E. Tonkonogov Peter the Great St. Petersburg Polytechnic University



dielectric strength recovery, turbulence, nozzle geometry, SF6 circuit breaker


A comprehension of the dielectric strength recovery processes during the interruption of short-circuit currents in the high-voltage SF6 gas-blast circuit breakers is necessary for their modernisation in order to increase the rated voltage and short circuit breaking current per one break. This paper presents numerical results of the turbulence effects on the interruption ability in the SF6 extinguishing arc chamber.


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