彭建军 周   科（重庆市设计院有限公司，重庆市 400015）

纪久祥（重庆城市管理职业学院，重庆市 401331）

城市道路照明接地故障防护电器的选择和整定（彭建军  周科  纪久祥）

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

PENG Jianjun ZHOU Ke(Chongqing Architectural Design Institute CO.,LTD.,Chongqing 400015，China)

JI Jiuxiang(Chongqing City Management College，Chongqing 401331，China)

    Abstract：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.

    Key words：road lighting;grounding type;TN - S;TT;grounding fault protection;overcurrent protector;residual current device;setting method

  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T T接地型式。

  关键词：道路照明；接地型式；TN - S；T T；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

  中图分类号：TU852　　　　  　 文献标识码：A

    doi：10.3969 / j. issn.1003 － 8493.2020.11.008