摘要
通过对国标图集19DX101-1《建筑电气常用数据》相关表格数据进行转换、分析,推导出直流线路导线电压降及安全截面的快速计算公式。同时介绍火灾自动报警系统及直流应急照明系统两个工程案例,供设计人员参考。最后推导出不同导体材料、不同环境温度时公式的修正系数,便于公式的推广运用。
The data in relevant tables of national standard atlas 19DX101-1 Common Data of Building Electricity are converted and analyzed to deduce the quick calculation formula for the voltage drop and safety section of the DC conductor.Meanwhile,two engineering cases of automatic fire alarm system and DC emergency lighting system are introduced for the reference of the designers.Finally,the correction coefficient of the formula is derived for different conductor materials and different ambient temperatures,so that the formula can be conveniently promoted and applied.
作者
林承过
LIN Chengguo(Xiamen Hordor Architecture&Engineering Design Group Co.,Ltd.,Xiamen 361004,Fujian Province,China)
出处
《建筑电气》
2020年第12期11-18,共8页
Building Electricity
关键词
直流线路
电压损失百分数
负荷矩
电流矩
安全截面
案例分析
快速计算公式
修正系数
DC line
percentage of voltage loss
load moment
current moment
safety section
case study
quick calculation formula
correction coefficient
