光伏组件.盐雾腐蚀试验

[中文适用范围]： 光伏（PV）组件是通常设计用于在其使用寿命期间持续暴露于户外环境的电气设备。高腐蚀性的潮湿环境，例如海洋环境或靠近海洋或其他大型盐水水体的地点，最终可能会损坏光伏组件的某些部件（金属部件腐蚀、某些非金属材料（例如保护涂层和塑料）因盐分吸收而性能下降等），从而造成永久性损坏，并可能影响其功能。在冬季使用盐来融化街道和道路上的冰雪的地方，也存在暂时性的腐蚀性环境。本文档描述了用于确定不同光伏组件对含氯盐雾（NaCl、MgCl₂ 等）腐蚀的耐受性的测试流程。所有测试流程均在 IEC 61215-2、IEC 62108、IEC 61730-2 和 IEC 60068-2-52 标准中有详细描述。本文件中的旁路二极管功能测试是在IEC 61215-2标准描述的基础上修改而来。本文件将两者结合起来，旨在提供评估光伏组件在高浓度溶解盐（NaCl）潮湿环境下运行时可能出现的故障的方法。根据组件在实际运行中所处环境的具体情况，可以采用IEC 60068-2-52标准中定义的多种测试方法。附件A提供了确定本文件适用性以及选择合适方法的指南。本文件适用于平板光伏组件和聚光光伏组件及组件。 [外文原描述]： IEC 61701:2020 describes test sequences useful to determine the resistance of different PV modules to corrosion from salt mist containing Cl (NaCl, MgCl2, etc.). All tests included in the sequences are fully described in IEC 61215‑2, IEC 62108, IEC 61730‑2 and IEC 60068‑2‑52. The bypass diode functionality test in this document is modified from its description in IEC 61215‑2. They are combined in this document to provide means to evaluate possible faults caused in PV modules when operating under wet atmospheres having high concentration of dissolved salt (NaCl). Depending on the specific nature of the surrounding atmosphere to which the module is exposed in real operation several testing methods can be applied, as defined in IEC 60068‑2‑52. Guidance for determining the applicability of this document and selecting an appropriate method is provided in Annex A. This third edition cancels and replaces the second edition issued in 2011. The main technical changes with respect to the previous edition are as follows: - The scope has been updated to better reflect the applicability of the Standard - Test methods and requirements have been condensed and aligned with the new editions of IEC 61215-1, IEC 61215-2, and IEC 61730-2. References to crystalline silicon versus thin film technologies have been eliminated. The old Figure 2 on the thin film test sequence has been eliminated. - The salt mist test references have been updated to harmonize with changes to IEC 60068‑2‑52. - A normative annex has been added to provide guidance on which of the test methods in IEC 60068-2-52 are applicable to different applications. This includes references to new test methods in the latest edition of IEC 60068-2-52.