易爆环境.第11部分:实质安全性的"i"型防护电气设备

[中文适用范围]： 本部分 IEC 60079 规定了用于爆炸性环境中的本质安全型设备及其关联设备的结构和测试，该关联设备旨在连接到进入此类环境的本质安全电路。这种保护类型适用于电气电路本身无法在周围爆炸性环境中引起爆炸的电气设备。本标准还适用于位于爆炸性环境之外或由 IEC 60079-0 中列出的其他保护类型保护的电气设备或部分电气设备，其中爆炸性环境中的电气电路的本质安全性可能取决于此类电气设备或部分电气设备的设计和结构。暴露于爆炸性环境中的电气电路通过应用本标准进行评估。本质安全系统的要求在 IEC 60079-25 中提供。本标准补充并修改了 IEC 60079-0 的一般要求，除非表 1 另有说明。如果本标准的要求与 IEC 60079-0 的要求发生冲突，则以本标准的要求为准。如果本标准中的要求同时适用于本质安全设备和关联设备，则整个标准中均使用“设备”一词。本标准仅适用于电气设备；因此，标准中使用的“设备”一词始终意味着“电气设备”。如果关联设备放置在爆炸性环境中，则应由 IEC 60079-0 中列出的适当保护类型进行保护，然后该保护方法的要求以及 IEC 60079-0 的相关部分也适用于关联设备。 [外文原描述]： IEC 60079-11:2011 specifies the construction and testing of intrinsically safe apparatus intended for use in an explosive atmosphere and for associated apparatus, which is intended for connection to intrinsically safe circuits which enter such atmospheres. This type of protection is applicable to electrical equipment in which the electrical circuits themselves are incapable of causing an explosion in the surrounding explosive atmospheres. This standard is also applicable to electrical equipment or parts of electrical equipment located outside the explosive atmosphere or protected by another Type of Protection listed in IEC 60079-0, where the intrinsic safety of the electrical circuits in the explosive atmosphere may depend upon the design and construction of such electrical equipment or parts of such electrical equipment. The electrical circuits exposed to the explosive atmosphere are evaluated for use in such an atmosphere by applying this standard. The requirements for intrinsically safe systems are provided in IEC 60079-25. This standard supplements and modifies the general requirements of IEC 60079-0, except as indicated in Table 1. Where a requirement of this standard conflicts with a requirement of IEC 60079-0, the requirements of this standard shall take precedence. This sixth edition cancels and replaces the fifth edition of IEC 60079-11 published in 2006, the first edition of IEC 61241-11 published in 2005, and partially replaces the second edition of IEC 60079-27 published in 2008 and constitutes a full technical revision. The significant changes with respect to the previous edition are listed below: - Inclusion of non-edition specific references to IEC 60079-0. - The merging of the apparatus requirements for FISCO from IEC 60079-27. - The merging of the requirements for combustible dust atmospheres from IEC 61241-11. - Clarification of the requirements for accessories connected to intrinsically safe apparatus; such as chargers and data loggers. - Addition of new test requirements for opto-isolators. - Introduction of Annex H about ignition testing of semiconductor limiting power supply circuits. The contents of the corrigendum 1 (January 2012), the interpretation sheets 1 (October 2014), 2 (July 2016), 3 (July 2016), 4 (April 2019), 5 (August 2019), 6 (December 2019) and 7 (May 2024) have been included in this copy.