抄録
This study focused on the development of a DC earth leakage current sensor comprising a flux-gate. Although a flux-gate leakage current sensor has conventionally used, the fluctuation of sensitivity due to the variation of temperature occurs up to approximately ±15%. The compensation method of the temperature characteristic by taking advantage of the detected voltage of first harmonic at R. T. (298K) under the leakage current of 0mA enabled us to reduce the fluctuation under ±10%.
