Effects of Carbon Dioxide Content on an Abnormal Fall in Atmospheric Outside-dielectric Strength of High-voltage Power Equipment

点击翻译按钮获取中文摘要

The present study has be investigated the effects of the small amount gases such as CO_2 H_2O composed air on the electric insulation performance with the non-uniform electric field gap at atmospheric pressure. The kind of applied voltage is a dc voltage with positive or negative polarity and an ac voltage in consideration of the dc and ac power transmissions. From the present results, the sparkover voltage in CO_2 and room air gas mixtures was found decreasing drastically below the half of that in room air when rising to about 0.2% with extremely little CO_2 density.