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In SF6 puffer-assisted self-blast interrupters, which are being developed as the next-generation switching mechanism, the arc burns within insulating nozzles with an ablation of the nozzle material and leads to an incoming gas flow for the pressure chamber with a pressure-rise during the high-current phase. Close to current zero, the arc can be cooled down and quenched completely by the reverse gas...
In a SF6 self-blast interrupter with the magnetic-field-producing coil, electrical arcs make hot gas flows driven into the expansion chamber for generating the blowing-off force during the high-current phase. When the fault current approaches natural current zero, this force can be used for cooling down and quenching the residual arcs. And the interaction of electrical arc-gas flow is critical to...
In SF 6 self-blast interrupters, which are being developed as the next-generation switching mechanism, the arc burns within insulating nozzles with an ablation of the nozzle material and leads to an incoming gas flow for the pressure chamber with a pressure-rise during the high-current phase. Close to current zero, the arc can be cooled down and quenched completely by the reverse gas flow...
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