1.1 本指南介绍了光伏模块设计、面板组装和系统安装的基本原则，以降低光伏电源电路引发火灾的风险。 1.2 本指南并非涵盖所有可能导致火灾的情况。它旨在提供一个普遍接受的实践汇编。 1.3 本指南适用于包含光伏模块和面板作为直流电源电路的系统，尽管推荐做法也适用于使用交流模块的系统。 1.4 本指南不包括光伏模块或系统发生火灾时的灭火。 1.5 本指南不包括其他来源的火灾。 1.6 本指南不包括光伏模块和系统设计和安装的机械、结构、电气或其他关键考虑因素。 1.7 本指南不包括因火灾或与此类模块相关的其他物质危险而损坏的模块的处理。 1.8 单位-- 以国际单位制表示的数值应视为标准。本标准中不包括其他计量单位。 1.9 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.10 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ===意义和用途====== 5.1 光伏组件是直流电源。直流电源在电弧形成和中断方面有着独特的考虑因素，因为一旦形成，电弧就不会被交流电自动中断。只要串中的模块被阳光照射，或者在故障条件下，太阳能模块就会通电。 5.2 随着光伏系统安装数量的快速增加，本指南试图提高人们对降低光伏系统火灾风险的方法的认识。 5.3 本指南适用于模块制造商、面板组装商、系统设计师、安装人员和规范制定者。 5.4 本指南可用于规定最低要求。它并不是为了捕捉可能导致火灾的所有情况或场景。

1.1 This guide describes basic principles of photovoltaic module design, panel assembly, and system installation to reduce the risk of fire originating from the photovoltaic source circuit. 1.2 This guide is not intended to cover all scenarios which could lead to fire. It is intended to provide an assembly of generally accepted practices. 1.3 This guide is intended for systems which contain photovoltaic modules and panels as dc source circuits, although the recommended practices may also apply to systems utilizing ac modules. 1.4 This guide does not cover fire suppression in the event of a fire involving a photovoltaic module or system. 1.5 This guide does not cover fire emanating from other sources. 1.6 This guide does not cover mechanical, structural, electrical, or other considerations key to photovoltaic module and system design and installation. 1.7 This guide does not cover disposal of modules damaged by a fire, or other material hazards related to such modules. 1.8 Units— The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.9 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.10 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 Photovoltaic modules are electrical dc sources. dc sources have unique considerations with regards to arc formation and interruption, as once formed, the arc is not automatically interrupted by an alternating current. Solar modules are energized whenever modules in the string are illuminated by sunlight, or during fault conditions. 5.2 With the rapid increase in the number of photovoltaic system installations, this guide attempts to increase awareness of methods to reduce the risk of fire from photovoltaic systems. 5.3 This guide is intended for use by module manufacturers, panel assemblers, system designers, installers, and specifiers. 5.4 This guide may be used to specify minimum requirements. It is not intended to capture all conditions or scenarios which could result in a fire.