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ARTECHE’s SDO-OCT Optical Current Transformers are based on the Faraday effect that causes a change in the polarization angle of the light when it crosses a magnetic field. ARTECHE’s Optical Current transformers stand-out in terms of accuracy range (which is virtually unlimited), safety (no risk of explosive failures), environmental protection (no SF6) and they are fully passive. The only active element in the system is the IEC61850 Merging Unit.
