摘要
根据IEC标准和我国现行规范，针对不同的接地方式，探讨了四极开关的选择，提出：有电气检修安全的场所要求切断中性导体，建筑物内具备MEB装置的TN—C—S供电系统和TN—S供电系统，中性导体不必进行切断，TT供电系统的电源进线开关应能切断中性导体，有漏电保护装置的TT供电系统必须切断中性导体，配出中性线的IT供电系统需切断中性导体．
According to IEC standard and the current normalization in our country, aiming at the different grounding mode, this article discusses the selection of fourpole switch, and points out the following requirements： cut off the neutral conductor in the places where electrical safety are checked; Buildings have TN - C - S power supply system and TN - S power supply system with MEB device, the neutral conductor don＇t have to be cut off; power line switch in IT power supply system should be able to cut off the neutral conductor; TT power supply system with leakage protection device must cut off the neutral conductor; TT power supply system With neutral line need to cut off the neutral conductor.
出处
《西安职业技术学院学报》
2015年第1期37-40,共4页
Research on Vocational Education in Xi'an Vocational and Technical College
关键词
四极开关
中性导体
隔离
four - pole switch
neutral conductor
isolation
