道路照明配电采用TT系统的电击防护措施简析
滕华兴(中国市政工程西北设计研究院有限公司新疆分公司,乌鲁木齐市 830000)
张 丽(中国市政工程西北设计研究院有限公司,兰州市 730000)
Brief Analysis of Measures for Protection against Electric Shock When the TT System Is Adopted for Road Lighting Distribution
TENG Huaxing(Xinjiang Branch,CSCEC AECOM Consultants Co.,Ltd.,Urumqi 830000,China)
ZHANG Li(CSCEC AECOM Consultants Co.,Ltd.,Lanzhou 730000,China)
Abstract:This paper analyzes the requirements of the specifications on T T system fault protection,and explains the fault prevention calculation and RCD selection,when the T T system is adopted in the project design of road lighting distribution system,in combination with the actual project case.
Key words:TT system;road lighting;distribution system;protection against electric shock;equipotential bonding;RCD;earth fault current;protection against indirect contact
摘 要:分析规范对T T系统故障防护的要求,结合实际工程案例,阐述道路照明配电系统工程设计中采用T T系统时故障防护计算以及RCD的选用。
关键词:T T系统;道路照明;配电系统;电击防护;等电位联结;RCD;接地故障电流;间接接触防护
中图分类号:TU852 文献标识码:A
doi:10.3969 / j. issn.1003 - 8493.2022.05.002