OPTICAL CURRENT TRANSFORMER

摘要

An optical current transformer particularly useful for a fault location system for power supply system and substation including a casing which can be detachably secured to a plurality of wire conductors which conduct currents of the same phase, within the casing a plurality of Rogowsky coils being arranged such that when the casing is secured to the wire conductors, each Rogowsky coils are wound around respective wire conductors. The Rogowsky coils are connected in series with an air-core coil and an optical current sensor having a Faraday element is arranged within a space of the coil such that the Faraday element is subjected to a magnetic flux generated by the coil. A magnitude of the magnetic flux is optical detected by the Faraday element to measure a total sum of currents conducting along the wire conductors.