摘要
针对轨道交通行业400 V开关柜进线、母联断路器极数选择和中性导体接地方式存在的问题,以及行业设计现状的调研情况,分析其原因。结合相关规范要求和地铁工程典型故障案例,对400 V开关柜断路器的极数选择和中性导体接地方式进行分析,并提出相应选择方案和建议。
With regard to problems existing on poles number selection of incoming line and bus coupler circuit breaker 400 V switch cabinet,earthing method of neutral conductor in rail transit sector,as well as the investigation of the current situation of the industry design,this paper analyzes the reasons. Meanwhile,this paper analyzes the poles number selection and neutral conductor earthing method of 400 V switch cabinet according to the requirements of relevant specifications and the typical failure cases of subway engineering,and proposes the corresponding selection schemes and suggestions.
作者
马德明
MA Deming(China Railway Siyuan Survey and Design Group Co.,Ltd.,Wuhan 430063,China)
出处
《建筑电气》
2022年第5期27-34,共8页
Building Electricity
关键词
地铁
供电系统
400
V开关柜
断路器
极数选择
多电源系统
中性导体
接地方式
subway
power supply system
400 V switch cabinet
circuit breaker
selection of poles number
multi-power system
neutral conductor
earthing method
