前言这是CSA C411.7《拉线用复合绝缘子》的第二版。它取代了2011年出版的上一版。本标准基于加拿大电力协会（CEA）LWIWG-03（96）《拉线用拉线复合绝缘子》（经CEA许可使用）的要求。感谢CEA的合作及其成员的贡献。范围1.1本标准涵盖了在标称电压高达75 kV（含75 kV）的架空配电线路拉线中使用的拉线复合绝缘子的要求。 拉线绝缘子绝缘或隔离拉线，以防腐蚀、更高的绝缘水平、维护和正常操作的间隙以及公众和工人的安全（共同使用）。拉线复合绝缘子承受拉伸和扭转载荷。复合绝缘子拟在-50至50°C温度范围内的使用环境中运行。1.2本标准定义了术语，规定了测试方法，并规定了验收或故障标准。第4条至第8条规定了适用于这些绝缘子的材料、产品资格、结构和测试要求。 1.3本标准涉及具有金属配件芯和涂层的拉线复合绝缘子。绝缘体的芯部有树脂浸渍玻璃纤维，并用抗紫外线涂层进行保护。1.4在本标准中，“应”用于表示要求，即用户有义务满足的规定，以符合本标准；“宜”用于表示建议或建议但不需要的建议；“may”用于表示一个选项或在标准范围内允许的选项。注释随附条款不包括要求或替代要求； 随附条款的注释旨在与文本中的解释性或信息性材料分开。表和图的注释被视为表或图的一部分，可以作为要求编写。附录被指定为规范性（强制性）或信息性（非强制性）以定义其应用。

PrefaceThis is the second edition of CSA C411.7, Composite insulators for guy wires. It supersedes the previous edition, published in 2011. This Standard is based on the requirements of Canadian Electricity Association (CEA) LWIWG-03 (96), Guy Composite Insulator for Guy Wires (used with permission from CEA). The co-operation of CEA and the contribution of its members are gratefully acknowledged.Scope1.1 This Standard covers the requirements for guy composite insulators used in guy wires on overhead distribution lines operating at nominal voltages up to and including 75 kV. Guy insulators insulate or isolate guy wires for corrosion protection, higher insulation levels, clearances for maintenance and normal operation, and safety for the public and workers (joint-use). Guy composite insulators are subjected to tensile and torsional loads. The composite insulators are intended to operate in a service environment within a temperature range of – 50 to 50 °C. 1.2 This Standard defines terms, prescribes test methods, and specifies acceptance or failure criteria. Clauses 4 to 8 specify the material, product qualification, construction, and test requirements applicable to these insulators. 1.3 This Standard deals with guy composite insulators having a core with metal fittings and a coating. The core of the insulator has resin-impregnated glass fibres and is protected with a UV resistive coating. 1.4 In this Standard, "shall" is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the Standard; "should" is used to express a recommendation or that which is advised but not required; and "may" is used to express an option or that which is permissible within the limits of the Standard. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.