DC characterisation of ac current shunts for wideband power applications

We present the dc properties of a set of recently developed ac-dc transfer current shunts in the range of 30 mA to 10 A. The measurements include the long-term drift, temperature coefficient and power coefficient, which all appear to have effects on the level of 1 to 10 parts in 10⁶. These results prove the suitability of the shunts for wideband power applications where both small ac-dc transfer differences as well as stable dc characteristics are required.