爆炸性环境-第0部分:设备-一般要求SUL 60079-01范围IEC 60079的这一部分规定了爆炸性环境中使用的电气设备和防爆部件的施工、测试和标记的一般要求。1对第1条第1款进行修改，将其替换为以下内容:1DV.1.1本标准规定了爆炸性环境中使用的电气设备和防爆部件的施工、测试和标记的一般要求。 爆炸性环境由国家电气规范NFPA70确定为危险（分类）场所，包括以下指定场所:一级、0区一级、1区一级、2区20区21区22。有关设备保护等级（EPL）与区域分类的关系，请参见6.1。可以假设电气设备可以在以下标准大气条件下运行（与大气的爆炸特性有关）: 温度-20°C至+60°C压力80 kPa（0.8 bar）至110 kPa（1.1 bar）；空气含氧量正常，通常为21%v/v。本标准和补充本标准的其他标准规定了在标准温度范围外运行的设备的额外测试要求，但在标准大气压力范围和标准氧含量以外运行的设备可能需要进一步考虑和额外测试，特别是关于依赖于火焰熄灭的保护类型，如“隔爆外壳”d- （IEC 60079-1）或能量限制，`本安“i”-（IEC 60079-11）。1DV。2将第1条第3款修改如下: 1DV.2.1删除“（IEC 60079-1）”和“（IEC 60079-11）”注1。尽管上述标准大气条件给出的大气温度范围为-20°C至+60°C，但除非另有规定和标记，否则设备的正常环境温度范围为-20°C至+40°C。见5.1.1。人们认为-20°C至+40°C适用于大多数设备，而制造所有设备以适应+60°C的标准大气上部环境温度将产生不必要的设计约束。 注2:本标准中给出的要求来自对电气设备进行的点火危险评估。考虑的点火源是与此类设备相关的点火源，如热表面、机械产生的火花、导致铝热反应的机械冲击、电弧和正常工业环境中的静电放电。注3:众所周知，随着技术的发展，可能通过尚未完全定义的方法实现IEC 60079系列标准中关于防爆的目标。 如果制造商希望利用这些发展，本国际标准以及IEC 60079系列中的其他标准可以部分应用。制造商应准备文件，明确定义IEC 60079系列标准的应用方式，并对所采用的其他技术进行完整解释。保留名称“Ex s”以表示特殊保护。特殊保护“s”的标准，IEC 60079- 33，正在准备。1DV。3修改第1条，删除注释3。 1DV.3.1本注释不适用。注4:如果爆炸性气体环境和可燃性粉尘环境同时存在或可能同时存在，则应考虑两者同时存在，并可能需要额外的保护措施。除与爆炸风险直接相关的要求外，本标准未规定安全要求。本标准不涉及绝热压缩、冲击波、放热化学反应、粉尘自燃、明火和高温气体/液体等点火源。 注5:此类设备应进行危险分析，确定并列出电气设备的所有潜在火源，以及防止其生效的措施。本标准由以下关于特定保护类型的标准进行补充或修改:-IEC 60079-1:气体-防火外壳“d”；-IEC 60079-2:气体加压外壳“p”；-IEC 60079-5:气体-粉末填充“q”；-IEC 60079-6:气体- 油浸“o”；-IEC 60079-7:气体-增安“e”；-IEC 60079-11:气体-本质安全“i”；-IEC 60079-15:气体保护类型“n”；-IEC 60079-18:气体和粉尘-封装“m”；-IEC 60079-31:外壳“t”防尘-IEC 61241-4:粉尘-加压“pD”； 1DV。4将第1条第6款修改为: -ISA 60079-2:气体加压外壳“p”；-ISA 60079-31:外壳“t”防尘ISA 61241-4:粉尘- 加压“pD”；-UL 60079-1:气体防爆外壳“d”；-UL 60079-5:气体-粉末填充“q”；-UL 60079-6:气体-油浸“o”；-UL 60079-7:气体-增加安全性“e”；-UL 60079-11:气体-本质安全“i”；-UL 60079-15:气体保护类型“n”；-UL 60079-18:气体和粉尘-封装“m”；注6:ISO/IEC 80079-36（待出版）中提供了有关非电气设备保护类型的其他信息。本标准由以下设备标准补充或修改: IEC 60079-13:爆炸性环境-第13部分:加压房间“p”的设备保护IEC 60079-25:爆炸性环境-第25部分:本质安全电气系统IEC 60079-26:爆炸性环境-第26部分:具有设备保护等级（EPL）的设备Ga IEC 60079-28:爆炸性环境-第28部分:使用光辐射的设备和传输系统的保护62013-1:易受沼气影响的矿井用顶灯-第1部分:一般要求- 与爆炸风险有关的施工和试验IEC 60079-30-1:爆炸性环境-第30-1部分:电阻伴热-一般要求和试验要求.1DV。5将第1条第6段修改为删除IEC 60079-13、IEC 62013-1、IEC 60079-30-1，并添加ANSI/IEEE 514和注释7:1DV。5.1本标准由以下设备标准补充或修改:ISA 60079-25（12.02.05）:爆炸性环境- 第25部分:本质安全电气系统IEC 60079-26（12.00.03）:爆炸性环境-第26部分:具有设备保护等级（EPL）的设备Ga IEC 60079-28（12.21.02）:爆炸性环境-第28部分:使用光辐射的设备和传输系统的保护ANSI/IEEE 515:测试、设计、安装标准，以及工业应用电伴热的维护。注7:应根据所采用的保护类型评估组件，如电源连接、拼接、端接以及电缆入口、配件和密封件。 本标准及上述附加标准不适用于电子医疗器械、发射式爆炸器、爆炸器测试装置和发射电路的施工。 1DV。6增加1DV.6.1 1DV.6.1如果参考了其他IEC 60079标准，则这些标准中的参考要求应适用于任何适用的美国国家差异。

Explosive atmospheres - Part 0: Equipment - General requirementsUL 60079-01 ScopeThis part of IEC 60079 specifies the general requirements for construction, testing and marking of electrical equipment and Ex Components intended for use in explosive atmospheres.1DV.1 Modification of Clause 1, first paragraph to replace with the following:1DV.1.1 This standard specifies the general requirements for construction, testing and marking of electrical equipment and Ex Components intended for use in explosive atmospheres. Explosive atmospheres are identified by the National Electrical Code, NFPA70 as hazardous (classified) locations and include the following specified locations:Class I, Zone 0Class I, Zone 1Class I, Zone 2Zone 20Zone 21Zone 22See 6.1 for the relationship of the Equipment Protection Level (EPL) to the zone area classification. The standard atmospheric conditions (relating to the explosion characteristics of the atmosphere) under which it may be assumed that electrical equipment can be operated are:temperature -20 °C to +60 °Cpressure 80 kPa (0,8 bar) to 110 kPa (1,1 bar); andair with normal oxygen content, typically 21 % v/v.This standard and other standards supplementing this standard specify additional test requirements for equipment operating outside the standard temperature range, but further additional consideration and additional testing may be required for equipment operating outside the standard atmospheric pressure range and standard oxygen content, particularly with respect to types of protection that depend on quenching of a flame such as `flameproof enclosure "d" - ( IEC 60079-1) or limitation of energy, `intrinsic safety "i" - ( IEC 60079-11).1DV.2 Modification of Clause 1, third paragraph as follows: 1DV.2.1 Delete "(IEC 60079-1)" and "(IEC 60079-11)"NOTE 1 Although the standard atmospheric conditions above give a temperature range for the atmosphere of -20 °C to +60 °C, the normal ambient temperature range for the equipment is -20 °C to +40 °C, unless otherwise specified and marked. See 5.1.1. It is considered that -20°C to +40°C is appropriate for most equipment and that to manufacture all equipment to be suitable for a standard atmosphere upper ambient temperature of +60°C would place unnecessary design constraints.NOTE 2 Requirements given in this standard result from an ignition hazard assessment made on electrical equipment. The ignition sources taken into account are those found associated with this type of equipment, such as hot surfaces, mechanically generated sparks, mechanical impacts resulting in thermite reactions, electrical arcing and static electric discharge in normal industrial environments.NOTE 3 It is acknowledged that, with developments in technology, it may be possible to achieve the objectives of the IEC 60079 series of standards in respect of explosion prevention by methods that are not yet fully defined. Where a manufacturer wishes to take advantage of such developments, this International Standard, as well as other standards in the IEC 60079 series, may be applied in part. It is intended that the manufacturer prepare documentation that clearly defines how the IEC 60079 series of standards has been applied, together with a full explanation of the additional techniques employed. The designation "Ex s" has been reserved to indicate special protection. A standard for special protection "s", IEC 60079-33, is in preparation.1DV.3 Modification of Clause 1 to delete NOTE 3. 1DV.3.1 This NOTE does not apply.NOTE 4 Where an explosive gas atmosphere and a combustible dust atmosphere are, or may be, present at the same time, the simultaneous presence of both should be considered and may require additional protective measures.This standard does not specify requirements for safety, other than those directly related to the explosion risk. Ignition sources like adiabatic compression, shock waves, exothermic chemical reaction, self ignition of dust, naked flames and hot gases/liquids, are not addressed by this standard.NOTE 5 Such equipment should be subjected to a hazard analysis that identifies and lists all of the potential sources of ignition by the electrical equipment and the measures to be applied to prevent them becoming effective.This standard is supplemented or modified by the following standards concerning specific types of protection:- IEC 60079-1: Gas - Flameproof enclosures "d";- IEC 60079-2: Gas - Pressurized enclosures "p";- IEC 60079-5: Gas - Powder filling "q";- IEC 60079-6: Gas - Oil immersion "o";- IEC 60079-7: Gas - Increased safety "e";- IEC 60079-11: Gas - Intrinsic safety "i";- IEC 60079-15: Gas - Type of protection "n";- IEC 60079-18: Gas and dust - Encapsulation "m";- IEC 60079-31: Dust - Protection by enclosure "t"- IEC 61241-4: Dust - Pressurization "pD"; 1DV.4 Modification of Clause 1, sixth paragraph to replace with the following: - ISA 60079-2: Gas - Pressurized enclosures "p";- ISA 60079-31: Dust - Protection by enclosure "t";- ISA 61241-4: Dust - Pressurization "pD";- UL 60079-1: Gas - Flameproof enclosures "d";- UL 60079-5: Gas - Powder filling "q";- UL 60079-6: Gas - Oil immersion "o";- UL 60079-7: Gas - Increased safety "e";- UL 60079-11: Gas - Intrinsic safety "i";- UL 60079-15: Gas - Type of protection "n";- UL 60079-18: Gas and dust - Encapsulation "m";NOTE 6 Additional information on types of protection for non-electrical equipment can be found in ISO/IEC 80079-36 (to be published).This standard is supplemented or modified by the following equipment standards: IEC 60079-13: Explosive atmospheres - Part 13: Equipment protection by pressurized room "p" IEC 60079-25: Explosive atmospheres - Part 25: Intrinsically safe electrical systems IEC 60079-26: Explosive atmospheres - Part 26: Equipment with equipment protection level (EPL) Ga IEC 60079-28: Explosive atmospheres - Part 28: Protection of equipment and transmission systems using optical radiation IEC 62013-1: Caplights for use in mines susceptible to firedamp - Part 1: General requirements - Construction and testing in relation to the risk of explosion IEC 60079-30-1: Explosive atmospheres - Part 30-1: Electrical resistance trace heating - General and testing requirements.1DV.5 Modification of Clause 1, sixth paragraph to replace with the following which deletes IEC 60079-13, IEC 62013-1, IEC 60079-30-1 and adds ANSI/IEEE 514 and NOTE 7:1DV.5.1 This standard is supplemented or modified by the following equipment standards: ISA 60079-25 (12.02.05): Explosive atmospheres - Part 25: Intrinsically safe electrical systems IEC 60079-26 (12.00.03): Explosive atmospheres - Part 26: Equipment with equipment protection level (EPL) Ga IEC 60079-28 (12.21.02): Explosive atmospheres - Part 28: Protection of equipment and transmission systems using optical radiation ANSI/IEEE 515: Standard for Testing, Design, Installation, and Maintenance of Electrical Heat Tracing for Industrial Applications.NOTE 7 Components such as power connections, splices, end terminations, as well as cable entries, fittings, and seals, are to be evaluated according to the type of protection employed.This standard with the additional standards mentioned above, are not applicable to the construction of electromedical apparatus, shot-firing exploders, test devices for exploders, and shot-firing circuits. 1DV.6 Addition of 1DV.6.1 1DV.6.1 Where references are made to other IEC 60079 standards, the referenced requirements found in these standards shall apply as modified by any applicable U.S. National Differences.