Abstract:Current transformers and Rogowski coils are used to measure electric current in power distribution equipments. In recent years, wide-range current sensors have had strong demands to standardize current sensors in those various equipments. However, it has been difficult to make a trade-off between the sensitivity and the size of a conventional current sensors. To overcome the difficulty, we developed a new current sensor where magnetic pieces are regularly arrayed inside the Rogowski coil. We made a comparative… Show more
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