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This paper describes the measurement techniques and results of the determination of phase angle errors of a set of National Measurement Institute, Australia, precision current shunts, rated from 100 mA to 20 A, in the frequency range from 40 Hz to 200 kHz. The standard uncertainties of the determination range from 1.3 murad at low frequencies to less than 150 murad at 200 kHz
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Ilya Budovsky (2007) studied this question.
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