贮存时间对固体合成材料长期击穿特性的影响

Proceedings of the 3rd International Conference on Conduction and Breakdown in Solid Dielectrics Pub Date : 1989-07-03 DOI:10.1109/ICSD.1989.69170

A. Sierota

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引用次数: 0

摘要

作者介绍了用两种模型安排进行的加速电压试验的结果，这些模型安排反映了铸造环氧树脂和挤压低密度聚乙烯绝缘的典型降解条件，即规则空隙中的内部PD(局部放电)和尖锐点的ET(电树)。由于从制作样品到执行试验的时间间隔从2天到10年不等，因此结果反映了储存时间对样品寿命的影响。空泡排列的起始电压随存储时间的变化不显著;然而，对于点的排列，它们是清晰可见的。由于在后一种情况下使用的测量方法的灵敏度较低，与样品制备相关的差异仍然未被检测到。

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On the influence of storage time on the long-term breakdown characteristics of solid synthetic materials

The author presents results of accelerated voltage tests performed with two model arrangements reflecting conditions of degradation typical for cast epoxy and extruded low-density polyethylene insulations, i.e. internal PD (partial discharge) in regular voids and ET (electrical treeing) from sharp points. As the intervals from the time at which the specimens had been manufactured until the execution of the tests varied from 2 days up to 10 years, the results reflected the influence of storage time on the life of the specimens. No significant variations of inception voltage with storage time was observed for the void arrangement; however they are clearly visible for the point arrangement. Due to the low sensitivity of the method of measurement used in the latter case, differences relevant to sample preparation remained undetected.<>

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Proceedings of the 3rd International Conference on Conduction and Breakdown in Solid Dielectrics

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