发明名称 |
Device and process for detecting an electrical short-circuit, and circuit breaker comprising such a device |
摘要 |
An electrical short-circuit detection device includes a first signal processing module for receiving a signal representative of an electrical current and supplying a first signal representative of the value of the electrical current and a second signal representative of the differential of the electrical current, and a second processing module for receiving the signals and comprising a short-circuit detection module for supplying a detection signal according to a curve overshoot. The second processing module monitors a limit curve overshoot and a ratio between variations of the signals. A short-circuit detection signal is supplied when the ratio exceeds a preset threshold. A circuit breaker incorporates such a device. The process comprises monitoring limit curve overshoot and the ratio between variations of the signals.
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申请公布号 |
US6844737(B2) |
申请公布日期 |
2005.01.18 |
申请号 |
US20020273978 |
申请日期 |
2002.10.21 |
申请人 |
SCHNEIDER ELECTRIC INDUSTRIES SAS |
发明人 |
LEPRETTRE BENOIT;PERICHON PIERRE;ORIAT LUC |
分类号 |
G01R31/02;H02H3/44;(IPC1-7):G01R31/14;G01R31/08;G01R31/28 |
主分类号 |
G01R31/02 |
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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