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This document summarizes a system for calibrating high voltage current transformers on-site using an optical current sensor as a reference standard. The system uses a flexible fiber optic cable that can be installed on live conductors up to 550kV without interrupting power supply. Field tests of the system demonstrated accuracy within class 0.3 limits. The system was used to calibrate 7 current transformers at 3 sites in Brazil, taking approximately 3 hours to complete each calibration. The on-site calibrat

Author

csrajmohan2924

Language

EN