Electromagnetic current mutual inductor iron core on-line demagnetizing method
Title：
Electromagnetic current mutual inductor iron core on-line demagnetizing method
Application Number：
 200410038299
Application Date：
 2004/05/21
Announcement Date：
 2005/02/16
Pub. Date：
 2006/07/05
Publication Number：
 1581375
Announcement Number：
 1263048
Grant Date：
 2006-7-5
Granted Pub. Date：
 2006-7-5
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 H01F 13/00
Applicant(s)：
 Tsinghua Univ.
Inventor(s)：
 Qian Jiali, Huang Yulong, Guan Yonggang
Key Words：
 Electromagnetic, current mutual inductor, iron core, on-line demagnetizing method
Abstract：
 In the method, unbuilding device is connected to subsidiary side of electromagnetic type current transformer and is cascaded to load. The unbuilding device is composed of bi-directional thyristors, controlling circuits, and current transformer. Based on condition of current in circuit, or at fixed time (such as once per year), operation personnel controls the device: short circuit current passing through the unbuilding device starts it up automatically so as to remove residual magnetism on line totally.
Claim：
Priority：
PCT：
LegalStatus：

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2008-4-17
  Selected patents owned by Tsinghua University filed in 2005 are loaded.
2008-3-31
  Selected patents owned by Tsinghua University filed in 2006 and 2007 are load.







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