城市道路照明接地故障防护电器的选择和整定  

Selection and Setting of Grounding Fault Protection Appliances for Urban Road Lighting

作　　者：彭建军 周科 纪久祥 PENG Jianjun;ZHOU Ke;JI Jiuxiang(Chongqing Architectural Design Institute CO.,LTD.,Chongqing 400015,China;Chongqing City Management College,Chongqing 401331,China)

机构地区：[1]重庆市设计院有限公司,重庆市400015 [2]重庆城市管理职业学院,重庆市401331

出　　处：《建筑电气》2020年第11期43-46,共4页Building Electricity

摘　　要：针对国内城市道路照明主要采用TN-S接地型式和TT接地型式,探讨分析不同接地故障防护电器的整定方法。提出:当供电距离不超过800 m时,可用熔断器或断路器作接地故障防护;当供电距离超过800 m时,宜采用剩余电流动作保护电器作接地故障防护,接地方式宜采用TT接地型式。On account of the fact that TN-S grounding type and TT grounding type are mainly used in urban road lighting in China,the setting methods of different grounding fault protection appliances are discussed and analyzed.It is suggested that:fuses or circuit breakers can be used as grounding fault protection when the power supply distance is not more than 800m;when the power supply distance is more than 800m,the residual current device should be used as grounding fault protection,and the grounding mode should be TT grounding type.

关 键 词：道路照明 接地型式 TN-S TT 接地故障防护 过电流保护器 剩余电流动作保护电器 整定方法 

分 类 号：TU852[建筑科学]