低压电气设备.第4-42部分:安全防护.热效应防护

[中文适用范围]： IEC 60364 的这一部分适用于电气装置，涉及保护人员、牲畜和财产免受以下影响的措施： – 热效应、材料燃烧或降解，以及电气设备引起的烧伤风险， – 发生火灾时的火焰从电气装置传播到附近由屏障隔离的其他防火分区，以及 – 损害电气设备（包括安全服务）的安全功能。 [外文原描述]： IEC 60364-4-42:2010 applies to electrical installations with regard to measures for the protection of persons, livestock and property against: - thermal effects, combustion or degradation of materials, and risk of burns caused by electrical equipment, - flames in case of a fire hazard being propagated from electrical installations to other fire compartments segregated by barriers which are in the vicinity, and - the impairment of the safe functioning of electrical equipment including safety services. This third edition cancels and replaces the second edition, published in 2001, and constitutes a technical revision. The main changes with respect to the previous edition are listed below: - The scope now includes protection against all thermal effects and flames in case of a fire hazard being propagated from electrical installations to other fire compartments segregated by barriers which are in the vicinity. - Requirements associated with escape routes for evacuation in an emergency have been expanded/modified. - Requirements associated with the nature of processed or stored materials have been expanded/modified. - Requirements associated with combustible constructional materials have been expanded/modified. - Requirements associated with fire propagating structures have been modified slightly. - New requirements for the selection and erection of installations in locations which might endanger precious goods have been added. - Protection against overheating now includes space heating appliances.