TN系统配电线路单相短路保护的可靠性校验  

Reliability verification of single phase short circuit protection in TN system

作　　者：方雅君[1] 

机构地区：[1]福建省建筑设计研究院,福建福州35001

出　　处：《福建建筑》2015年第12期97-102,共6页Fujian Architecture & Construction

摘　　要：文章论述配电线路的保护,当短路保护电器为断路器时,TN系统用断路器自动切断电源作电击防护的间接接触保护。结合具体工程项目,针对不同规格的断路器及铜芯线缆,计算出满足低压断路器单相短路时保护灵敏度要求的导线长度,列出TN系统回路0.4k V线路最大供电距离表,以方便设计时估算使用。This paper discusses the protection of power distribution lines. When the short circuit protection equipment is a circuit breaker,the TN system is used for the protection of the electric shock protection. Combined with the specific engineering project,the wire length is calculated according to the different specifications of the circuit breaker and the copper core cable,and the maximum power supply distance of the TN line 0. 4k V line is listed.

关 键 词：TN系统 单相短路(单相接地故障)整定电流 供电距离 

分 类 号：TU855[建筑科学]