电测与仪表2016，Vol.53Issue(15)：78-80,3.
电流互感器的电压法开路退磁
Demagnetization of current transformer in open circuit with voltage method
摘要
Abstract
Demagnetization is required compulsory verification in testing current transformers.This paper analyzes the respective merits and weaknesses of open circuit method and closed circuit method, and eventually proposes the open circuit voltage method of demagnetization.According to the law of electromagnetic induction, this paper provides the technique to test the excitation admittance of the current transformer while testing current transformers in open circuit with voltage method, as well as researches on how to select the test line to check admittance and demagnetization volt-age.Finally, this paper reaches the conclusion that the magnetic conductivity is the highest when admittance is the lowest while the voltage method is used to demagnetize.This method both achieves the purpose of demagnetization and assures the safety of demagnetization experimentations.关键词
电流互感器/退磁/开路/电压法/励磁导纳Key words
current transformer/demagnetization/open circuit/voltage method/excitation admittance分类
信息技术与安全科学引用本文复制引用
杨志峰..电流互感器的电压法开路退磁[J].电测与仪表,2016,53(15):78-80,3.
