高压应力下户外用聚合材料的选择指南

[中文适用范围]： 本文件介绍了用于户外绝缘的聚合物材料的重要材料特性，并在适用时列出了包括最低要求在内的标准化测试方法。如果没有可用的标准化测试，则总结了文献中报道的测试方法。本文件适用于系统电压大于 1 000 V AC 和 1 500 V DC 的户外高压电气应用中具有聚合物绝缘的绝缘材料。此类应用适用于外壳是设备组成部分的情况，例如在避雷器和电缆终端中。本文件的范围仅限于绝缘材料，通常不适用于涂层材料（例如，施加在钢化玻璃和陶瓷上的薄层）。本文件中提到的一些测试适用于涂层，并正在由 CIGRE 考虑。 [外文原描述]： IEC TR 62039:2021(E) presents the important material properties of polymeric materials used in outdoor insulation and, where applicable, lists standardized test methods including minimum requirements. If no standardized tests are available, the test methods reported in literature are summarized. This document is valid for insulating materials having polymeric insulation, which are used in outdoor high voltage electrical applications with a system voltage greater than 1 000 V AC and 1 500 V DC (several tests are only defined for alternating current, which are not applicable for direct current). Such applications are relevant where the housing is an integral part of the device, for example in surge arresters and cable terminations. The scope of this document is limited to the insulation materials only and is not generally intended for coating materials (coating materials are, for example, thin layers applied on toughened glass and ceramic). Some tests mentioned in this document are applicable for coating and are under consideration by CIGRE. The performance of insulators in service depends on several factors such as the type of material, the design and environmental conditions. Consequently, the choice of materials that fulfil the requirements listed in Table 1 is a necessary condition but does not guarantee satisfactory performance when used in outdoor insulation.