发明名称 |
ARCING FAULT DETECTION SYSTEM |
摘要 |
<p>A system to detect arcing faults in an electrical distribution system with a line conductor connected to a utility power transformer. The system monitors the rate of change of electrical current in the line conductor and produces a signal which represents the rate of change. The system produces a pulse each time the rate-of-change signal exceeds a selected threshold, filters the rate-of-change signal and/or the pulses to substantially eliminate a signal or pulse which represents changes in the electrical current outside a selected frequency range, monitors the remaining pulses to detect when the number of pulses that occur within a selected time interval exceeds a predetermined threshold, and generates an arc-fault-detection signal in response to the occurrence of a number of pulses which exceed the threshold within the selected time interval.</p> |
申请公布号 |
EP0820651(B1) |
申请公布日期 |
2009.03.04 |
申请号 |
EP19970905790 |
申请日期 |
1997.01.31 |
申请人 |
SQUARE D COMPANY |
发明人 |
STRADER, WALTER, H.;DICKENS, JAMES, W.;BROOKS, STANLEY, J. |
分类号 |
H02H1/00;H02H3/22;H01H71/12;H01R4/36;H01R11/26;H02H1/06;H02H3/16;H02H3/44 |
主分类号 |
H02H1/00 |
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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