发明名称 |
Detecting partial discharge using a detection coil and analysis of output signal and noise frequency spectrums |
摘要 |
In an electric apparatus such as an electric power cable system, a high frequency pulse is induced on a conductive member such as a metal sheath, where partial discharge occurs in an insulation. The high frequency pulse is detected by means of a bypass lead wire, a metal foil electrode, a detecting coil, and the like provided on the electric apparatus without interrupting a live operation of the electric apparatus.
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申请公布号 |
US5469067(A) |
申请公布日期 |
1995.11.21 |
申请号 |
US19930163572 |
申请日期 |
1993.12.08 |
申请人 |
HITACHI CABLE, LTD. |
发明人 |
ENDOH, TAKESHI;IMAI, TOMOAKI;HAGIYA, MIKIO |
分类号 |
G01R31/02;G01R31/08;G01R31/12;(IPC1-7):G01R31/08 |
主分类号 |
G01R31/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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