A fault current sensor device detects and distinguishes abnormal current events on alternating current overhead and underground power transmission lines. The sensor distinguishes whether the momentary or sustained fault is a line-to-ground fault, line-to-line fault or a three-phase fault. The sensor...http://www.google.fr/patents/US5656931?utm_source=gb-gplus-shareBrevet US5656931 - Fault current sensor device with radio transceiver
Fault current sensor device with radio transceiver
