爆炸性环境 第0部分：设备 通用要求

[中文适用范围]： IEC 60079-0:2026 以 IEC 60079-0:2026 RLV 形式发布，该版本包含国际标准及其修订对照版，清晰展示了与上一版相比技术内容的所有变更。IEC 60079-0:2026 规定了适用于爆炸性环境或与之关联的爆炸性电气设备（Ex 设备）和爆炸性电气组件（Ex 组件）在结构、测试及标识方面的通用要求。Ex 设备适用的标准大气条件（涉及爆炸性大气的爆炸特性）如下：温度范围为−20 °C 至 +60 °C；压力范围为 80 kPa（0.8 巴）至 110 kPa（1.1 巴）；以及含正常氧含量的空气，通常体积分数为 21%。IEC 60079-0:2026 及其他补充文件针对超出标准温度范围运行的 Ex 设备规定了额外的测试要求；但在某些情况下，对于超出标准大气压力范围及标准氧含量运行的 Ex 设备，还需进一步考虑并实施额外测试。此类额外测试尤其与依赖于火焰熄灭的防护类型相关，例如“隔爆型外壳" d"（IEC 60079-1）”或“本安型"i"（IEC 60079-11）”等限制能量的防护型式。本第八版取消并取代了 2017 年发布的第七版。本版本构成一项技术修订。关于第 8.0 版与前版之间的全部技术变更详情，请参阅本文件前言部分。 [外文原描述]： IEC 60079-0:2026 is available as IEC 60079-0:2026 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition. IEC 60079-0:2026 specifies the general requirements for construction, testing and marking of Ex Equipment and Ex Components intended for use in or associated with explosive atmospheres. The standard atmospheric conditions (relating to the explosion characteristics of the atmosphere) for Ex Equipment are: - temperature −20 °C to +60 °C; - pressure 80 kPa (0,8 bar) to 110 kPa (1,1 bar); and - air with normal oxygen content, typically a volume fraction of 21 %. This IEC 60079-0:2026 and other documents supplementing this document specify additional test requirements for Ex Equipment operating outside the standard temperature range, but in some cases, further additional consideration and additional testing is required for Ex Equipment operating outside the standard atmospheric pressure range and standard oxygen content. Such additional testing is particularly relevant with respect to Types of Protection that depend on quenching of a flame such as 'flameproof enclosures "d"' (IEC 60079-1) or limitation of energy, 'intrinsic safety "i"' (IEC 60079-11). This eighth edition cancels and replaces the seventh edition, published in 2017. This edition constitutes a technical revision. Refer to the Foreword of the document for a complete listing of the technical changes between edition 8.0 and the previous edition of the document.