A Coaxial Time Constant Standard for the Determination of Phase Angle Errors of Current Shunts

作者：Pan Xianlin^*; Zhang Jiangtao; Ma Xuefeng; Gu Yang; Liu Wenfang; Wang Biao; Lu Zuliang; Zhang Deshi

来源：IEEE Transactions on Instrumentation and Measurement, 2013, 62(1): 199-204.

DOI：10.1109/TIM.2012.2212595

• Binary inductive current divider (BICD)
• current shunt
• four-terminal mutual inductor
• residual inductance
• substitution method
• time constant

This paper describes a new method to determine the phase angle errors of ac shunts by measuring the inductance and distributed capacitance. A 1-Omega shunt of coaxial design has been developed as the time constant standard. A coaxial inductor with identical structure as the time constant standard has been developed. A four-terminal mutual inductor has also been built for the measurement of the inductance of the time constant standard. The method is based on the use of a binary inductive current divider to compare the inductor with the mutual inductor. The standard uncertainty of the inductance measurement of the time constant standard is within 28 pH at frequencies up to 200 kHz. The expanded uncertainty of the phase angle errors is from 0.4 mu rad at 1 kHz to 80.0 mu rad at 200 kHz at 1 A.

• 出版日期2013-1
• 单位哈尔滨工业大学; 山东省计量科学研究院; 中国计量科学研究院; 吉林大学