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Fault current disconnector for power supply - has relay detecting sudden changes in resonant current to trigger cut=out fuse
Fault current disconnector for power supply - has relay detecting sudden changes in resonant current to trigger cut=out fuse
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机译:电源故障电流隔离开关-具有继电器,用于检测谐振电流的突然变化以触发保险丝熔断
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摘要
The fault-current disconnector, for a power supply, has a winding (N2, N3) for each power line (R, M) and a saturation winding (L) all wound on the same toroidal core (W). The saturation winding is supplied with a constant rectangular-wave voltage and forms a non-linear resonant circuit with a series capacitor (C). This resonant circuit (LC) contains a relay (A1) that detects sudden changes in its resonant current and causes a short circuit between the power lines so that the series fuse (S) on one line opens.
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