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A new phase comparator for current shunts with frequency range to 1 MHz has been developed and a new method to determine the absolute phase angle error of current shunts is described. Preliminary expanded uncertainty of the absolute phase angle error for a reference shunt with resistance 1,5 Ω is ±200 μrad at 1 MHz. Based on the reference shunt the phase comparator is used to determine the phase angle...
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