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高压电器  2015 

X射线法评估灭弧室真空度的可能性研究

, PP. 92-97

Keywords: X射线,真空灭弧室,电场强度,真空度

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Abstract:

笔者主要针对目前中压开关设备中使用非常广泛的真空灭弧室,研究其X射线吸收剂量率与真空度的关系,探讨以X射线吸收剂量率作为参量评估真空灭弧室的真空度的可能性。实验结果表明,经过电压老炼的真空灭弧室,在真空度低于10-2Pa时,也可能通过工频耐压试验,但其X射线发射的起始平均电场强度显著降低。因此X射线测量可与工频耐压试验配合进行,以检测出可通过耐压、但真空度已低于10-2Pa的灭弧室。

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