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불평등 전계 하에서의 침전극 가공상태에 따른 SF. 혼합가스의 방전특성
고연성(Y.S. Go),서호준(H.J. Seo),이동희(D.H. Rhie) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.10
AC spark discharge voltage of SF. /CO2and SF. /N2 containing various mixed rate in volume percent 0, 5 and 10%) of SF. in non-uniform fields are investigated. The needle to plane electrode gap spacing was 5 and 10 ㎜, and the gas pressure was varied within the range of 0.1~0.7 ㎫. We have observed a N-characteristic typical for the electronegative gases even in gas mixtures of 1% SF. with CO2 and N2 as buffer gases. Especially, the materials of the needle electrode affect the insulation properties of the gas mixtures drastically. On the contrary to the case of needle electrodes made by mild steel or high carbon steel, the N-characteristics are hardly perceived in the case of stainless steel needle in this experiment.