标准摘要
[中文适用范围]： 本部分IEC 62271是一份技术报告，涉及额定电压高于1 kV且包括52 kV在内的交流预装金属封闭和固体绝缘封闭（以下统称为封闭式）开关设备和控制设备组件，如IEC 62271-200和IEC 62271-201中所述，以及同一外壳中包含的其他设备及其可能的相互影响。 本文件可用于将在一个测试对象上进行的型式试验的有效性扩展到同一系列中具有不同额定值或不同组件或绝缘流体布置的另一个开关设备和控制设备组件。它支持选择由开关设备和控制设备系列的功能单元组成的代表性测试对象，旨在优化型式试验以进行一致的符合性评估。 与型式试验一样，有效性的扩展不包括老化、材料兼容性、对人体健康的毒性或环境影响等方面。制造商和用户有责任检查这些方面是否涵盖在组件设计的技术验证中。 根据组件标准扩展型式试验的有效性不在本文件的范围内。 本文件利用技术、物理原则、制造商和用户经验以及计算的组合，为型式试验的有效性扩展提供指导，涵盖各种设计和额定值方面。 [外文原描述]： IEC TR 62271-307:2024 refers to prefabricated metal-enclosed and solid-insulation enclosed (both hereinafter called enclosed) switchgear and controlgear assemblies for alternating current of rated voltages above 1 kV and up to and including 52 kV as specified in IEC 62271‑200 and IEC 62271‑201, and to other equipment included in the same enclosure with any possible mutual influence. This second edition cancels and replaces the first edition published in 2015. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) Structure of document updated. b) Updated references to IEC 62271-200:2021 and IEC 62271-1:2017. c) Addition of criteria for the extension of validity of type tests from functional unit(s) with a different insulating gas to the functional unit to be validated. d) Figure 5 for the validation of a design modification was added. e) Clause B.7 for the extension of validity of type test for a GIS with insulation gas A to insulation gas B was added.
英文名称High-voltage switchgear and controlgear - Part 307: Guidance for the extension of validity of type tests of AC metal and solid-insulation enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV