IEC 60079-11:2023 爆炸性环境.第11部分:本质安全“i”设备保护

标准编号：IEC 60079-11:2023

中文名称：爆炸性环境.第11部分:本质安全“i”设备保护

英文名称：Explosive atmospheres - Part 11: Equipment protection by intrinsic safety "i"

发布日期：2023-01-13

标准范围

IEC 60079-11:20 23规定了用于爆炸性环境的本质安全设备以及用于连接到进入此类环境的本质安全电路的相关设备的构造和测试。这种类型的保护适用于其中电路本身不能引起周围爆炸性环境的点燃的电气设备。这包括包含仅在某些条件下本质安全的电路的电气设备，例如在移除主电源的电池供电下。本文件也适用于位于爆炸性环境之外或受IEC 60079 0中列出的另一种类型保护的电气设备或电气设备部件，其中爆炸性环境中电路的本质安全性可能取决于此类电气设备或此类电气设备部件的设计和构造nt.通过应用本文件，评估暴露于爆炸性环境中的电路在此类环境中的使用情况。本文件适用于连接到本质安全电路的传感器，但不适用于IIC组或IIB+H2组催化元件的保护。本文件不适用于Ex设备电缆密封套。IEC 60079-25中提供了本质安全系统的要求。本文件补充和修改了IEC 60079-0的一般要求，表1所示除外。如果本文件的要求与IEC 60079-0的要求相冲突，则以本文件的要求为准。除非另有说明，否则本文件中的要求适用于本质安全设备和相关设备，并且在整个标准中使用通用术语“设备”。由于本文件仅适用于电气设备，因此标准中使用的术语“设备”总是指“电气设备”。本文件适用于在IEC 60079 0大气条件下使用的设备，对在60 kPa（0.6 bar）至110 kPa（1.1 bar）范围内的扩展大气压力下使用有附加要求。这第七版取消并取代了2011年出版的第六版。本版构成技术修订版。IEC 60079-11第7版（2022）和IEC 60079-11第6版（2011+勘误表1（2012））之间变更的标识和意义可在出版物前言中的变更表中找到。

IEC 60079-11:2023 specifies the construction and testing of intrinsically safe apparatus intended for use in explosive atmospheres, 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 ignition of a surrounding explosive atmosphere. This includes electrical equipment which contains circuits that are intrinsically safe only under certain conditions, for example under battery supply with mains supply removed.
This document 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 assessed for use in such atmospheres by applying this document.
This document applies to sensors connected to intrinsically safe circuits but does not apply to the protection of catalytic elements for Group IIC or Group IIB + H2.
This document does not apply to Ex Equipment cable glands.
The requirements for intrinsically safe systems are provided in IEC 60079-25.
This document supplements and modifies the general requirements of IEC 60079-0, except as indicated in Table 1. Where a requirement of this document conflicts with a requirement of IEC 60079-0, the requirement of this document takes precedence.
Unless otherwise stated, the requirements in this document are applicable to both intrinsically safe apparatus and associated apparatus, and the generic term "apparatus" is used throughout the standard.
As this document applies only to electrical equipment, the term "equipment" used in the standard always means "electrical equipment".
This document applies to apparatus for use under the atmospheric conditions of IEC 60079 0 with additional requirements for use at extended atmospheric pressures in the range from 60 kPa (0,6 bar), up to 110 kPa (1,1 bar).
This seventh edition cancels and replaces the sixth edition published in 2011. This edition constitutes a technical revision.
The identification and significance of the changes between IEC 60079-11, Edition 7 (2022) and IEC 60079-11, Edition 6 (2011 + Corrigendum 1 (2012)) can be found in the table of changes in the foreword of the publication.

标准预览图