DEVICE FOR SIGNALLING SHORT-CIRCUIT OCCURRENCE IN OVER-GROUND SYSTEMS

摘要

the invention relates to a device for signalling overhead medium voltage short circuits in networks.composed of two magnetic circuits coupled through intermediulunei granted at resonance coils on a capacity.in order to attract a blades when power on the conductor exceeds a certain value th.allowing a crew to handle mobile position indicating apariteii scurtcircuitului on that line,unit cell that consists of a rod fixed on an axle and having at the bottom a signalling element which can occupy two distinct positions.state of short circuit and the corresponding running normal.the return from the signaling defect at proper condition normal function being assured by a line formed of a recovery scheme with accumulation of capacitiva rectifierenergy, a eclator with air core electromagnetic relay and a plunger.