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The high voltage transformer is applicable to 1kV to 220kV power system, this large voltage power system will be converted into a small voltage or large current converted into a small current in order to measure, protect, the use of the transformer.

Nowadays, demanded for transformer with a 12% annual growth rate per year. The traditional electromagnetic current transformer is not only needed to consume a large amount of copper, aluminum and other non-ferrous materials, and a huge amount of energy consumption during operation.