爆燃性环境.第2部分:受压外壳"p"型的设备保护

[中文适用范围]： “IEC 60079 的这一部分包含了用于爆炸性气体环境或爆炸性粉尘环境中具有保护类型““p””@的加压外壳@的电气设备的构造和测试的具体要求。它还包括以下要求：含有有限释放的易燃物质的加压外壳。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。标准不包括以下要求： 密封系统可能释放的加压外壳 a) 氧气含量高于正常值的空气@ 或 b) 氧气与惰性气体的组合，其中氧气的比例大于 21%。或分析仪室；参见 IEC 60079-13；在存在“爆炸物”或烟火的地方使用加压外壳；在存在气体/蒸汽和可燃粉尘的混合混合物的地方使用加压外壳；加压外壳用于存在自燃物质（例如含有氧化剂的爆炸物或推进剂）的地方 加压外壳具有内部可燃粉尘释放源。注：当用户扮演制造商的角色@时，用户通常有责任确保本标准的所有相关部分均适用于设备的制造和测试。” [外文原描述]： IEC 60079-2:2014 contains the specific requirements for the construction and testing of electrical equipment with pressurized enclosures, of type of protection "p", intended for use in explosive gas atmospheres or explosive dust atmospheres. It also includes the requirements for pressurized enclosures containing a limited release of a flammable substance. 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 requirements of this standard take precedence. This standard does not include the requirements for: - pressurized enclosures where the containment system may release air with an oxygen content greater than normal, or oxygen in combination with inert gas where the oxygen is in a proportion greater than 21 %; - pressurized rooms or analyser houses; see IEC 60079-13; - pressurized enclosures used where "explosives" or pyrotechnics are present; - pressurized enclosures used where hybrid mixtures of gas/vapour and combustible dust are present; - pressurized enclosures used where pyrophoric substances such as explosives or propellants containing their own oxidizers are present; - pressurized enclosures with an internal source of release of combustible dust. This sixth edition cancels and replaces the fifth edition published in 2007. This sixth edition cancels and replaces the first edition of IEC 61241-4 published in 2001. This sixth edition constitutes a technical revision. The significance of changes between IEC 60079-2, Edition 6.0, 2014 and IEC 60079-2, Edition 5.0, 2007 are as listed in the foreword of the document. Keywords: electrical equipment with pressurized enclosures, type of protection "p", explosive gas atmospheres, explosive dust atmospheres The contents of the corrigendum of July 2015 have been included in this copy.