城市道路照明路灯电缆截面的选择和保护  

Selection and Protection of Cable Sections for Urban Road Lighting Streetlights

作　　者：李明 姚美菱 李英杰 张星 LI Ming;YAO MeiLing;LI YingJie;ZHANG Xing(Hebei Province Urban and Rural Planning and Design Institute,Shijiazhuang 050035,China;Department of Telecommunication Engineering,Shijiazhuang Post and Telecommunications Vocational and Technical College,Shijiazhuang,050031,China;College of Information Science and Technology,Dalian Maritime University,Dalian 116026,China)

机构地区：[1]河北省城乡规划设计研究院,河北石家庄050035 [2]石家庄邮电职业技术学院电信工程系,河北石家庄050031 [3]大连海事大学信息科学技术学院,辽宁大连116026

出　　处：《现代建筑电气》2020年第3期1-5,共5页Modern Architecture Electric

摘　　要：简述了电缆截面选择的条件,对不同截面、不同长度的路灯电缆末端进行了单相短路电流计算,采用非选择型断路器和选择型断路器对配电线路进行短路保护,分别进行了断路器额定电流选择及脱扣器电流整定,并对路灯配电线路设置剩余电流保护进行了探讨。The conditions for cable section selection were briefly described.The single-phase short-circuit current was calculated for the ends of streetlight cables with different sections and different lengths.The non-selective circuit breakers and the selective circuit breakers were used for short-circuit protection of distribution lines.The rated current selection and tripper current setting were carried.In addition,the residual current protection of the street lamp distribution line was discussed.

关 键 词：电缆截面 单相短路电流 断路器 短路保护 剩余电流保护 

分 类 号：TU852[建筑科学]