Analysis of shunt over range measurement errors based on finite element method

In this paper, the thermoelectric coupling finite element model of 150A/75mV shunt and 1000A/75mV shunt were established, and the temperature rises of them when the measuring current was over range were analyzed. The electromagnetic finite element models of shunts were established simultaneously, and the electromagnetic forces on manganin sheets of shunts were analyzed. Then the measurement errors were estimated according to the results of temperature rises and the electromagnetic forces.