Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Tatsuya Sakurai0
Hirofumi Honda0
Shinichi Ishida0
Date of Patent
October 21, 2008
0Patent Application Number
115218670
Date Filed
September 15, 2006
0Patent Primary Examiner
Patent abstract
In one aspect, an impedance component which exhibits a high impedance in a high frequency region is arranged on a high pressure line formed on a secondary side of a transformer. The potential difference generated at both ends of the impedance component is used to detect an abnormal electrical discharge generated in the high pressure line. When the abnormal electrical discharge is detected, a switching operation is stopped by a controlling circuit, whereby a protection operation is performed.
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