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多电源TN系统一点接地的误解剖析

来源于: 发表时间:2017-08-08 14:08 编辑:fzy

陈 谦(山东意匠建筑设计有限公司,济南市 250022)

Analysis on the Misunderstanding of Single- point Earthing of TN Multiple Source System
CHEN Qian(Shandong Yijiang Architecture Design Co.,Ltd.,Ji’nan 250022,China)
 
Abstract:There are still different views on system earthing of TN multiple source systems. This paper intends to clarify the misunderstanding through the analysis of some views. The requirements of electromagnetic compatibility are met in accordance with national standards and IEC standards. It is stated that TN multiple source system should connection between the neutral points of the sources and the PE inside the main switchgear assembly.
Key words:multiple source system;TN system;single-point earthing;stray current;sectionalized single-bus cnnection;protective earthing;system earthing;electromagnetic compatibility
 
    摘 要:行业内对多电源TN系统的系统接地仍有不同看法。通过对一些观点进行分析,澄清其误解;根据国家标准和IEC标准满足电磁兼容性的要求,阐明多电源TN系统均应在低压配电屏处一点接地。
    关键词:多电源系统;TN系统;一点接地;杂散电流;单母线分段接线;保护接地;系统接地;电磁兼容性
     中图分类号:TU852         文献标识码:A
     doi:10. 3969 / j. issn. 1003 - 8493. 2017. 07. 001

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