发明名称 |
ARC FAULT CIRCUIT INTERRUPTER AND METHOD OF PARALLEL ARC FAULT DETECTION |
摘要 |
An arc fault circuit interrupter includes separable contacts, an operating mechanism, a current sensor sensing current flowing through the contacts and outputting a sensed current, and a processor determining and storing peak values of the sensed current for plural half-cycles. The processor provides arc fault detection, determines whether a first predetermined plurality of half-cycles occur in succession and correspond to non-unity power factor, and responsively inhibits the detection for a first predetermined time, and whether a second predetermined plurality of half-cycles occur in succession, each with smaller peak amplitude than that of an immediately preceding half-cycle of like or differing polarity, and responsively inhibits the detection for a second predetermined time. The processor determines that the detection is not inhibited for the first and second predetermined times, and responsively indicates that any of the half-cycles having a peak amplitude greater than a predetermined amount is a parallel arc. |
申请公布号 |
WO2008104849(A1) |
申请公布日期 |
2008.09.04 |
申请号 |
WO2008IB00411 |
申请日期 |
2008.02.25 |
申请人 |
EATON CORPORATION;PARKER, KEVIN, L.;ELMS, ROBERT, T. |
发明人 |
PARKER, KEVIN, L.;ELMS, ROBERT, T. |
分类号 |
H02H1/00;H02H1/04 |
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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