架空线路绝缘子 标称电压大于1000V交流系统用复合悬式和拉式绝缘子 定义、试验方法和验收标准

[中文适用范围]： 本国际标准适用于由纤维（通常为玻璃）在树脂基体中构成的承载圆柱形绝缘实心芯、由聚合物材料制成的外壳（围绕绝缘芯）和永久附着在绝缘芯上的金属端配件组成的架空线路复合绝缘子。 本文件涵盖的复合绝缘子旨在用作悬垂/张力线路绝缘子，但这些绝缘子偶尔可能会受到压缩或弯曲，例如用作相间隔板时。此类载荷的指南见附录C。 本文件的目的是定义使用的术语，指定测试方法，指定验收标准。 本文件不包括处理超出表1中定义的正常环境条件的特定操作条件或环境的绝缘子选择要求。 [外文原描述]： IEC 61109:2025 applies to composite insulators for overhead lines consisting of a load-bearing cylindrical insulating solid core consisting of fibres - usually glass - in a resin-based matrix, a housing (surrounding the insulating core) made of polymeric material and metal end fittings permanently attached to the insulating core. Composite insulators covered by this document are intended for use as suspension/tension line insulators, but these insulators could occasionally be subjected to compression or bending, for example when used as interphase-spacers. Guidance on such loads is outlined in Annex C. The object of this document is to: - define the terms used, - specify test methods, - specify acceptance criteria. This third edition cancels and replaces the second edition published in 2008. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - extension of this document to apply both to AC and DC systems; - modifications of Clause 3, Terms, definitions and abbreviations; - removal of Clause 7, Hybrid insulators, from this document; - modifications of tests procedures recently included in IEC 62217 (hydrophobicity transfer test, stress corrosion, water diffusion test on the core with housing); - modifications on environmental conditions; - modifications on classification of tests and include the relevance of the interfaces; - clarification and modification of the parameters determining the need to repeat design and type tests; - revision of Table 1; - revision of electrical type tests; - revision of re-testing procedure of sample test; - addition of a new Annex D on electric field control for AC; - addition of a new Annex E on typical sketch for composite insulators assembly; - addition of a new Annex F on mechanical evaluation of the adhesion between core and housing; - addition of a new Annex G on applicability of design- and type tests for DC applications.