李道本（北京土木建筑学会电气设计委员会，北京市 100036）
Analysis on Fire Protection of Residual Current
Li Daoben（Electrical Design Committee，Civil Engineering & Architectural Society
of Beijing，Beijing 100036，China）
Abstract Through the study on relevant national standards and IEC standards，this paper analyzes the fire protection mechanism of residual current，the effect of fire protection devices for electrical fire protection，and the fire protection effect of fire isolation measures of wiring systems and electrical equipments. The application scope of fire protection of residual current is discussed，and some personal views on relevant contents of standards on fire protection design are proposed.
Key words Earthing pattern Leakage current Fire alarm system of residual current Wiring system Protection class
摘 要 通过对相关国家标准、IEC 标准的学习理解，分析剩余电流火灾防护的机理、保护装置对电气火灾防护的作用、布线系统及电气设备的火源隔离措施对火灾防护的作用，探讨剩余电流火灾防护的适用范围，并对建筑设计防火规范相关内容谈一些个人看法。
关键词 接地型式 泄漏电流 剩余电流火灾报警系统 布线系统 防护等级
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