火灾条件下电线和光缆的测试 第1-2部分：单根绝缘电线或电缆的垂直火焰蔓延试验 1 kW预混火焰程序

[中文适用范围]： IEC 60332-1-2:2025 CMV 包含官方标准及其注释版。注释版为用户提供了便捷的方式来比较 IEC 60332-1-2:2025 第2.0版与之前 IEC 60332-1-2:2004+AMD1:2015 CSV 第1.1版之间的所有变更。此外，还提供了 IEC TC 20 专家的注释，解释最相关变更的原因或澄清内容中的任何部分。 IEC 60332-1-2:2025 规定了在火灾条件下，使用1千瓦预混火焰测试单根垂直电气绝缘导线或电缆、光纤电缆对垂直火焰传播的抗性测试程序。相关设备描述详见 IEC 60332-1-1。 注1：如有需要，IEC 60332-1-2 的测试可与 IEC 60332-1-3 的测试同时进行。 本安全出版物主要作为产品安全标准，适用于标准中所提及的产品；同时也可用于技术委员会在制定类似产品的标准时，依据 IEC 指南 104 和 ISO/IEC 指南 51 的原则。 注2：对单根绝缘导线、电缆或光纤电缆执行该测试方法，并不能证明其在与其他电缆一起安装时符合相关标准中的火灾传播要求（请参见 IEC 60332-3 系列）。 技术委员会的一项职责是，在适用的情况下，充分利用基本安全出版物和/或安全出版物来制定其出版物。 [外文原描述]： IEC 60332-1-2:2025 CMV contains both the official standard and its commented version. The commented version provides you with a quick and easy way to compare all the changes between IEC 60332-1-2:2025 edition 2.0 and the previous IIEC 60332-1-2:2004+AMD1:2015 CSV edition 1.1. Furthermore, comments from IEC TC 20 experts are provided to explain the reasons of the most relevant changes, or to clarify any part of the content. IEC 60332‑1‑2:2025 specifies the procedure for testing the resistance to vertical flame propagation for a single vertical electrical insulated conductor or cable, or optical fibre cable, under fire conditions using a 1 kW pre-mixed flame. The apparatus is described in IEC 60332‑1‑1. NOTE 1 Testing to IEC 60332‑1‑2 can be performed simultaneously with that to IEC 60332‑1‑3, if required. This group safety publication focusing on test method(s) is primarily intended to be used as a product safety standard for the products mentioned in the scope, but is also intended to be used by technical committees in the preparation of standards for products similar to those mentioned in the scope of this group safety publication, in accordance with the principles laid down in IEC Guide 104 and lSO/lEC Guide 51. NOTE 2 The performing of this test method on a single insulated conductor or cable or optical fibre cable does not provide compliance with fire propagation requirements in relevant standards in the case that the single insulated conductor or cable or optical fibre cable is installed with or amongst other cables as a group. (See the IEC 60332‑3 series). One of the responsibilities of a technical committee is, wherever applicable, to make use of basic safety publications and/or group safety publications in the preparation of its publications.