摘要
在建筑消防设计领域,防火电缆越来越受到重视,但目前缺乏该类电缆载流量的研究,严重影响了选型和推广应用。分析了三种不同类型防火电缆的结构特点,基于归一化原理研究了云母带/气隙复合绝缘热阻,测量了防火电缆常用材料的热阻系数,计算了不同类型防火电缆的载流量,并进行了对比分析。
In the field of building fire protection design, fire resistant cables attracted more and more attention. The lack of current-carrying capacity impeded the selection and promotion. This paper analyzed the structural characteris-tics of three different types of fire resistant cables. Based on the normalization principle, the thermal resistance of mi-ca ribbon /air gap composite insulation was researched. The thermal resistance of materials commonly used in fire re-sistant cables measurement were measured. The current carrying capacity of different types of fire resistant cable was calculated and analyzed together.
出处
《电线电缆》
2018年第1期44-46,共3页
Wire & Cable
关键词
防火电缆
热阻
归一化原理
载流量
fire resistant cables
thermal resistance
normalization principle
current carrying capacity
