爆炸性环境.第18部分:密封"m"型设备保护

[中文适用范围]： IEC 60079 的这一部分给出了用于爆炸性气体环境或爆炸性粉尘环境中的保护封装类型为“m”的电气设备部件和防爆组件的结构@测试和标记的具体要求本部分仅适用于额定电压不超过 11 kV 的封装电气设备@电气设备的封装部件和封装防爆组件（以下始终称为“m”设备）。电气设备在大气中的应用@可能同时含有爆炸性气体和可燃粉尘@可能需要额外的防护措施。本标准不适用于不需要大气氧气燃烧@的爆炸性粉尘@或自燃物质本标准不考虑任何风险由于粉尘排放易燃或有毒气体，本标准补充和修改了IEC 60079-0的一般要求。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。” [外文原描述]： IEC 60079-18:2014 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. Keywords: encapsulation "m", explosive gas atmospheres, explosive dust atmospheres This publication is to be read in conjunction with IEC 60079-0:2011 . The contents of the corrigendum of July 2018 have been included in this copy.