母联开关四极断路器选择分析 

刘文杰1，李刚2 
(1 大连红秋电控设备有限公司，辽宁 大连 116600；
2 大连豪森设备制造有限公司，辽宁 大连 116036) 
 

摘 要： 低压断路器的正确选择在配电系统设计中至关重要，介绍了影响四极断路器选择的主要因素，分析了断零、中性线带电、杂散电流对断路器选择所造成的影响，并针对不同的接地形式讨论了母联开关四极断路器的选择方法。建议选用带有断零保护的四极断路器作为母联开关，达到既避免杂散电流，又保证供电系统安全可靠的目的。
关键词： 断零；中性线带电；杂散电流；接地形式；四极断路器
中图分类号：TM561 文献标识码：B 文章编号：1007-3175(2015)01-0026-03

Selection Analysis of Four-Pole Circuit Breaker for Bus Tie 

LIU Wen-jie1, LI Gang2 
（1 Dalian Honqiu Electric Controls Equipment Co., Ltd, Dalian 11 6600, China;
2 Dalian Haosenread Equipment Manufacture Co., Ltd, Dalian 11 6036, China;） 
 

Abstract: Correct selection of low-voltage circuit breakers is a very important factor in distributed system design. Introduction was made to the main factors impacting on four-pole circuit breakers. This paper analyzed the impacts of neutral breaking, live neutral line and stray current on circuit breakers selection, aiming at different grounding forms to discuss on the bus-tie four-pole circuit breakers selection method. It is suggested that the four-pole circuit breakers with neutral breaking protection should be selected as the bus tie switch to avoid stray current and to ensure power supply system safe and reliable.
Key words: neutral breaking; neutral charged; stray current; grounding type; four-pole circuit breaker

参考文献
[1] 王厚余.低压电气装置的设计安装和检验[M].北京：中国电力出版社，2007.
[2] 李英姿，洪元颐.现代建筑电气供配电设计技术[M].北京：中国电力出版社，2008.
[3] 李顺康，丁受甫.变压器总保护开关和联络开关采用四极断路器刍议[J].低压电器，2008(4)：32-36.