发明名称 |
Frequency selective arc detection |
摘要 |
An arc detection method and apparatus is provided for an electric circuit having an electrified conductor (46) connecting a voltage source (26) to a load (30). A field sensor senses an electromagnetic field established about the conductor by the occurrence of an electrical arc in the circuit, and generates a field responsive signal. Arc discrimination circuitry includes frequency responsive circuitry responding to the field sensor and generating an arc indicative signal in response to a given frequency characteristic of the field responsive signal. The frequency responsive circuitry monitors a plurality of different frequencies of the field responsive signal, and generates the arc indicative signal in response to a given combination of field responsive signal frequencies. A comb filter passes the field responsive signal through a plurality of passbands, and the arc indicative signal is generated in response to a given frequency signature of the field responsive signal.
|
申请公布号 |
US5185684(A) |
申请公布日期 |
1993.02.09 |
申请号 |
US19910676738 |
申请日期 |
1991.03.28 |
申请人 |
EATON CORPORATION |
发明人 |
BEIHOFF, BRUCE C.;TENNIES, CHARLES J.;RICHARDS, JR., FRANCIS S.;O'NEIL, WALTER K. |
分类号 |
G01R15/18;G01R29/12;G01R31/08;H02H1/00 |
主分类号 |
G01R15/18 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|