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Design of a wide-range current transformer based on improved 1K107 material

In order to expand the measurement range of the electromagnetic current transformer, this paper designs a wide-range current transformer based on the improved 1K107 material. First of all, by improving the formula of the material, the magnetization curve of the improved material was produced and tested, and it was found that the initial magnetic permeability was greatly improved, so that a relatively small primary current could be measured more accurately. Finally, by building an error simulation model, the ratio difference and angular difference of 0.1%~200% primary current are calculated, and it is found that the error can meet the requirements.