IEC 60695-9-2:20 21总结了用于确定电工产品或其形成材料的火焰表面蔓延的已发布测试方法。 它代表了测试方法的当前技术水平，并且在可用的情况下，包括对其相关性和使用的特殊观察。 测试方法列表不应被视为详尽无遗，除非特别说明，否则不是由IEC开发的测试方法不应被视为由IEC认可。 本总结不能代替已发布的标准，这些标准是唯一有效的参考文件。 本基本安全出版物旨在供技术委员会根据IEC指南104和 ISO/IEC指南51。 技术委员会的职责之一是在适用的情况下，在编制其出版物时利用基本安全出版物。除非相关出版物中特别提及或包含，否则本基本安全性出版物的要求、试验方法或试验条件将不适用。 本国际标准应与IEC 60695-1一起使用。 第二版取消并取代了2014年发布的第一版IEC 60695-9-2。本版构成技术修订版。 与上一版相比，此版本包括以下重大技术变更: a)更新导言 b)更新的规范性参考文献 c)更新术语和定义 d)新的第4.1和4.2款 e)参考ISO 19706中定义的火灾阶段（表1） f)将测试新细分为以下子条款: 4.3小规模火灾试验 4.4中型和中等规模火灾试验 4.5电缆的中型和大型火灾试验 4.6电缆的真实火灾试验 g)更新第4条部分内容的案文 h）增加以下试验方法: IEC TS 60695-11-21 IEC 60684-2:20 11，第26条 ISO 3582 ISO 9772 ISO 9773 ISO 12992 ISO 21367 i)新的第5条和表4给出了测试方法的概述 j)删除所有附件 k）更新的参考书目

IEC 60695-9-2:2021 presents a summary of published test methods that are used to determine the surface spread of flame of electrotechnical products or materials from which they are formed.
It represents the current state of the art of the test methods and, where available, includes special observations on their relevance and use.
The list of test methods is not to be considered exhaustive, and test methods that were not developed by the IEC are not to be considered as endorsed by the IEC unless this is specifically stated.
This summary cannot be used in place of published standards which are the only valid reference documents.
This basic safety publication is intended for use by technical committees in the preparation of standards in accordance with the principles laid down in IEC Guide 104 and
ISO/IEC Guide 51.
One of the responsibilities of a technical committee is, wherever applicable, to make use of basic safety publications in the preparation of its publications. The requirements, test methods or test conditions of this basic safety publication will not apply unless specifically referred to or included in the relevant publications.
This International Standard is to be used in conjunction with IEC 60695-1.
This second edition cancels and replaces the first edition of IEC 60695-9-2 published in 2014. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) Updated introduction
b) Updated normative references
c) Updated terms and definitions
d) New Subclauses 4.1 and 4.2
e) Reference to fire stages as defined in ISO 19706 (Table 1)
f) New sub-division of tests into the following subclauses:
4.3 Small-scale fire tests
4.4 Medium and intermediate-scale fire tests
4.5 Intermediate and large-scale fire tests for cables
4.6 Real-scale fire tests for cables
g) Updated text in parts of Clause 4
h) Addition of the following test methods:
IEC TS 60695-11-21
IEC 60684-2:2011, Clause 26
ISO 3582
ISO 9772
ISO 9773
ISO 12992
ISO 21367
i) New Clause 5 and Table 4 giving an overview of test methods
j) Deletion of all the Annexes
k) Updated bibliography