Analysis for errors of shunt outrange measurement based on finite element method

Thermoelectric coupling finite element model of 150A/75mV shunt was established, and temperature rises of them when the measuring current was over range were analyzed. Electromagnetic finite element model of shunt was established, And electrodynamic forces on manganin sheets of shunt were analyzed. Then, the measurement errors were estimated according to the results of temperature rises and electrodynamic forces, and the main aspects of measurement errors when measure outrange current were found in this paper.