母线槽故障回路电阻试验中试验电流对试验结果的影响
庞佳，张正，马国浩
（浙江方圆电气设备检测有限公司，浙江 嘉兴 314001）
摘 要：针对母线槽故障零序电阻试验中试验电流对试验结果的影响，通过对同一根母线槽通以额定电流以及3倍的额定电流，经过计算得到故障零序电阻，并对其进行分析，结果表明，母线槽的故障零序电阻试验中的试验电流为额定电流会更加合理些，为供电系统中正确选用合适的母线槽提供参考与依据。
关键词：母线槽；故障零序电阻；电抗；额定电流
中图分类号：TM645.1+2 文献标识码：B 文章编号：1007-3175(2018)03-0057-03
Influence of Test Current on Test Results in Resistance Test of Busway Fault Circuit
PANG Jia, ZHANG Zheng, MA Guo-hao
（Zhejiang Fangyuan Electrical Equipment Inspection Co., Ltd, Jiaxing 314001, China）
Abstract: Aiming at the influence of test current on test results in zero sequence resistance test of busway faults, this paper calculated the fault zero sequence resistance which was tested for the same busbar under the conditions of rated current and three times of rated current and analyzed the fault zero sequence resistance. The results show that the rated current in fault zero sequence resistance test of busbar will be more reasonable, which provides reference and basis for the selection of suitable busbar in power supply system.
Key words: busway; fault-loop zero-sequence resistance; reactance; rated curren
参考文献
[1] GB 7251.6—2015 低压成套开关设备和控制设备 第6 部分：母线干线系统( 母线槽)[S].
[2] GB 7251.2—2006 低压成套开关设备和控制设备 第2部分：对母线干线系统( 母线槽) 的特殊要求[S].
