薛   晓 王国光 崔欢欢（中国建筑西北设计研究院有限公司，西安市 710018）

Application Research on the Fire Resistance of Wires and Cables for Civil Buildings

XUE Xiao WANG Guoguang CUI Huanhuan

(China Northwest Architectural Design and Research Institute Co.,Ltd.,Xi’an 710018，China)

Abstract：The classification and test standards for fire resistance of different wires and cables are analyzed and compared,and existing problems about and suggestions for the selection of fire resistance category in design standards are proposed. The severity of fire in buildings is closely related with the scale,function and purpose of buildings. The continuous power supply time of firefighting electrical equipment varies with buildings,the distribution and control lines of firefighting equipment shall meet the requirements for continuous power supply for buildings within the duration of fire,and the selection of fire resistance of wires and cables shall match the firefighting equipment.

Key words：wires and cables;burning behavior;fire resistance category;cable tray;fire resistance;firefighting electrical equipment;fire supply time;performance test

摘　要：通过分析比对不同电线电缆阻燃耐火性能分类及试验标准，提出设计标准中阻燃类别选择存在的问题及建议。建筑物发生火灾的严重程度与建筑规模功能用途密切相关，不同建筑物的消防用电设备所需连续供电的时间也不同，消防设备配电及控制线路应满足建筑火灾延续时间内能连续供电的要求，电线电缆耐火性能的选择应与之相适应。

关键词：电线电缆；燃烧性能；阻燃类别；电缆桥架；耐火性能；消防用电设备；供火时间；性能检测

中图分类号：TM247                 　  文献标识码：A

doi：10.3969 / j. issn.1003 － 8493.2024.07.010