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current transformer grids gas Calibration factory-sell-directly

Testing Current Transformers with 'the Modeling Concept ... the current transformer is magnetized a demagnetization process is necessary in order to remove residual magnetism. This can be achieved e.g. by applying an AC current with similar strength as the current which caused the remanence. In a second step, the current transformer is demagnetized by reducing the voltage gradually to zero.

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