发明名称 |
Fault detector for two line power distribution system and protection apparatus incorporating the same |
摘要 |
Apparatus for protecting a two-line electric power distribution system includes a circuit breaker pole in each line. Each pole includes a fault detector generating a fault signal in response to either an arc fault or a ground fault in the protected line, and a trip unit responsive to the fault signal. Each trip unit includes a trip coil and an SCR connected in series at a node with the trip coil connected to the neutral conductor and the SCR connected to the associated line conductor. A jumper connects the two nodes together directly without electrical isolation so that a fault signal from either detector energizes both trip coils to open both poles in response to an arc fault or a ground fault in either line, even if one of the line conductors is not energized.
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申请公布号 |
US7149066(B2) |
申请公布日期 |
2006.12.12 |
申请号 |
US20030680819 |
申请日期 |
2003.10.07 |
申请人 |
EATON CORPORATION |
发明人 |
ELMS ROBERT T.;NATILI THOMAS E. |
分类号 |
H02H3/00;H02H1/00;H02H7/26 |
主分类号 |
H02H3/00 |
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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