发明名称 |
Fault detector for overhead electrical-power distribution lines |
摘要 |
The probe (2) uses an air or ferrite-filled winding to detect the magnetic field of the line with a measuring circuit (4) using a cascade-connected operational amplifier to provide an output voltage proportional to field intensity with a high signal to noise ratio. The inductance and resistance of the winding are selected to match the power frequency.
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申请公布号 |
FR2772130(A1) |
申请公布日期 |
1999.06.11 |
申请号 |
FR19970015492 |
申请日期 |
1997.12.08 |
申请人 |
CONCEPTION REALISATION DEVELOPPEMENT ELECTRONIQUE CRDE |
发明人 |
GRANDJEAN HERVE |
分类号 |
G01R15/18;G01R31/02;(IPC1-7):G01R31/08 |
主分类号 |
G01R15/18 |
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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