+AMD1:2017 CSV 爆炸性环境.第18部分:封装“m”的设备保护

[中文适用范围]： 本部分IEC 60079规定了用于爆炸性气体环境或爆炸性粉尘环境的电气设备、电气设备部件和Ex组件采用封装型保护"m"的结构、测试和标志的具体要求。 本部分仅适用于额定电压不超过11kV的封装电气设备、封装电气设备部件和封装Ex组件（以下简称"m"设备）。 电气设备在同时含有爆炸性气体和可燃粉尘的环境中应用时可能需要额外的保护措施。 本标准不适用于不需要大气氧气即可燃烧的爆炸性粉尘或自燃物质。 本标准不考虑粉尘释放易燃或有毒气体带来的任何风险。 本标准是对IEC 60079-0通用要求的补充和修改。当本标准要求与IEC 60079-0要求冲突时，以本标准要求为准。 [外文原描述]： IEC 60079-18:2014+A1:2017 gives the specific requirements for the construction, testing and marking of electrical equipment, parts of electrical equipment and Ex components with the type of protection encapsulation "m" intended for use in explosive gas atmospheres or explosive dust atmospheres. This part applies only for encapsulated electrical equipment, encapsulated parts of electrical equipment and encapsulat ed Ex components (hereinafter always referred to as "m" equipment) where the rated voltage does not exceed 11 kV. The application of electrical equipment in atmospheres, which may contain explosive gas as well as combustible dust simultaneously, may require additional protective measures. This standard does not apply to dusts of explosives, which do not require atmospheric oxygen for combustion, or to pyrophoric substances. This standard does not take account of any risk due to an emission of flammable or toxic gas from the dust. This standard supplements and modifies the general requirements of IEC 60079-0. Where a requirement of this standard conflicts with a requirement of IEC 60079-0, the requirement of this standard takes precedence. This fourth edition cancels and replaces the third edition of IEC 60079-18:2009, and constitutes a technical revision. Please refer to the foreword of the document for a listing of the technical changes with respect to the previous edition. This publication is to be read in conjunction with IEC 60079-0:2011. This consolidated version of the official IEC Standard and its amendment contains the fourth edition (2014) and its amendment 1 (2017). Therefore, no need to order amendment in addition to this publication. Keywords: encapsulation "m", explosive gas atmospheres, explosive dust atmospheres The contents of the corrigendum of July 2018 have been included in this copy.