低压开关设备和控制设备.火灾风险分析和风险降低措施

[中文适用范围]： 本文件适用于低压开关设备和控制设备（以下简称“设备”）的火灾风险分析，参考了IEC 60947相关出版物，适用于以下情况： – 仅在设备内部发生火灾（通常在故障或误用条件下）的情况； – 仅在正常环境中安装的设备。易燃材料存在等危险环境不予考虑； – 仅在选择、安装和使用符合制造商说明和安装规则的产品的情况。 此外，以下情况不予考虑： – IEC TR 61641中涉及的故障； – 由于烟雾排放引起的风险； – 双重故障，即可能组合的多种现象。 [外文原描述]： IEC TR 63054:2017(E) applies to the fire risk analysis of low-voltage switchgear and controlgear (hereinafter referred to as "equipment") referring to the IEC 60947 relevant publications, where the following applies: - only the case where a fire originates (typically under fault or misuse conditions) within the equipment; - only equipment installed in normal environments. Hazardous environments, for example in presence of combustible materials, is not to be considered; - only the case of products selected, installed and used according to the manufacturer instructions and installation rules. In addition, the following cases are not considered: - faults addressed by IEC TR 61641; - risks due to smoke emissions; - double faults, i.e. multiple phenomenon, potentially combined.