摘要
当前道路照明接地系统以TN系统为主,TT系统鲜有被采用。笔者试图通过低压、中压系统发生接地故障时产生的故障电压与应力电压,对人员与电气装置的影响与危害,将二者作出定性与定量分析比对,供同行判断与选择。
A TN system is currently the dominant earthing system for road lighting,while a TT system is rarely used.The author attempts to qualitatively and quantitatively analyze the impact and harm`of fault voltage and stress voltage generated by earth fault in low⁃voltage and medium⁃voltage systems on personnel and electrical equipment,thereby providing a basis for peers to make judgments and choices.
作者
樊永峰
FAN Yongfeng(Xiamen Hordor Architecture&Engineering Design Group Co.,Ltd.,Xiamen 361006,Fujian Province,China)
出处
《建筑电气》
2023年第4期49-53,共5页
Building Electricity
关键词
接地故障
故障电压
应力电压
电击防护
不接地系统
低电阻接地系统
TN系统
TT系统
earth fault
fault voltage
stress voltage
protection against electric shock
ungrounded system
low resistance earthing system
TN system
TT system
