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首页> 外文期刊>IEEE Transactions on Dielectrics and Electrical Insulation >Impulse breakdown of insulators and air gaps of similar electrode configurations: effects of temperature
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Impulse breakdown of insulators and air gaps of similar electrode configurations: effects of temperature

机译：相似电极配置的绝缘子的脉冲击穿和气隙：温度的影响

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Comparative measurements are reported on the breakdown, under lightning and switching impulses, of a concentric electrode arrangement in which the inter-electrode space is spanned either by an insulator surface or by air. Temperature in the system has been varied in the range 10>T>100/spl deg/C. The variation of positive and negative 50% flashover voltage, and the times to breakdown at 100% flashover, are presented for each temperature level tested. Flashover voltages, analysed as a function of relative air density /spl delta/, show a variation of the form /spl delta//sup m/, where 0.8>m>1.0 for positive polarity and m<1.0 for negative polarity at the highly stressed electrode. Variations are the same, in the presence or absence of the insulator surface, but absolute positive flashover voltages are lower across the surface, than in air, while negative flashover voltages are higher. Times to breakdown decrease with increasing temperature.
机译：报道了在雷电和开关脉冲作用下击穿同心电极装置的比较测量结果，在该同心电极装置中，电极间空间被绝缘体表面或空气所覆盖。系统中的温度已在10> T> 100 / spl deg / C的范围内变化。列出了每种测试温度水平的正负50％跳火电压的变化以及100％跳火时的击穿时间。根据相对空气密度/ spl delta /的函数分析的闪络电压显示出/ spl delta // sup m /形式的变化，其中0.8> m> 1.0为正极，m <1.0为负极。应力电极。在存在或不存在绝缘子表面的情况下，变化是相同的，但是整个表面上的绝对正闪络电压要比空气中的要低，而负闪络电压则要高。随着温度升高，击穿时间减少。

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