Investigation the effect of environmental factors on the performance of polymeric outdoor insulation

1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319) Pub Date : 1999-10-17 DOI:10.1109/CEIDP.1999.807912

M. Uğur, A. Kuntman, A. Merev

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引用次数: 3

Abstract

Surface tracking is one of the severe degradation mechanisms observed on polymeric insulators. There are too many factors associated with the degradation process, hence it is not easy to make an estimate about the useful service life of an insulator. However it is possible to reduce the variability observed in the tracking initiation times and tracking patterns by testing the samples in laboratory under predefined conditions (4 kV applied voltage and 36 ml/h flow rate of liquid). In this study, by using the ASTM D 2303 Inclined Plane Tracking Test method the effects of longitudinal compressive and tensile stress, ultraviolet (UV) radiation and wind pressure from different positions with respect to the surface of the sample under test have been investigated in detail. All samples have been prepared by using polyester resin without any accelerator. In all cases tracking initiation times were reduced significantly depending on the external conditions. UV radiation and wind pressure caused bushy type carbonised tracking patterns with wide branches around the high voltage electrode.

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研究了环境因素对高分子室外保温材料性能的影响

表面跟踪是在聚合物绝缘体上观察到的严重降解机制之一。与绝缘子退化过程有关的因素太多，因此对绝缘子的使用寿命进行估计是不容易的。然而，通过在实验室中预先设定的条件下(4千伏电压和36毫升/小时的液体流速)测试样品，可以减少在跟踪起始时间和跟踪模式中观察到的可变性。本研究采用ASTM D 2303斜面跟踪试验方法，详细研究了纵向压应力和拉应力、不同位置的紫外线辐射和风压对被测样品表面的影响。所有样品均采用聚酯树脂制备，不含任何促进剂。在所有情况下，根据外部条件，跟踪起始时间显著减少。紫外线辐射和风压导致高压电极周围有宽分支的浓密型碳化跟踪图案。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319)

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