Measurement of DC properties and relative humidity (RH) dependence of wideband AC current shunts

The paper describes the DC characterization of AC current shunts recently developed at the Faculty of electrical engineering and computing, University of Zagreb (UNIZG-FER). The shunts of cage type design include nine shunts that range from 1 mA up to 10 A. The following DC properties were inspected: long time drift, temperature coefficients and power coefficients. The results have shown that shunts have low temperature (<7 µΩ/Ω/°C), and power coefficients (<10 µΩ/Ω/W), and small drift which makes them suitable for precise power measurement applications. Also, relative humidity dependence of currents shunts is investigated.