Development of Human Body Impedance Equivalent Circuit for Contact Current Measurement

This study develops of a human body impedance equivalent circuit for contact current measurements. Experiments are conducted to measure the human body impedance of 19 adult men in the frequency range of 40 Hz to 10 MHz. The 10th and 50th percentile values are obtained. A circuit with optimal component values is built and its frequency characteristics are compared to those of measured values. Although resonance appeared at frequencies of ≥ 15 MHz, the results confirm that the frequency characteristics of the proposed equivalent circuit match those of the human body.