A New Method for Measuring the Level Dependence of AC Shunts

作者：Zhang, Jiangtao^*; Pan, Xianlin; Lin, Jun; Wang, Lei; Lu, Zuliang; Zhang, Deshi

来源：IEEE Transactions on Instrumentation and Measurement, 2010, 59(1): 140-144.

DOI：10.1109/TIM.2009.2022110

• AC-DC current transfer
• binary inductive current divider (BICD)
• current shunts
• current transformer (CT)
• level dependence

We report on a new method for the measurement of the level dependence of the ac-dc difference of current shunts. The method is based on the use of a binary inductive current divider. A method to compare two ac shunts at common ground is described. Measurement results on two 1-A ac shunts, which consist of different numbers of resistors, indicate that the level dependence between 0.5 and 1 A is less than 2 mu A/A with an uncertainty of less than 7 mu A/A from 1 to 100 kHz.

• 出版日期2010-1
• 单位吉林大学; 中国计量科学研究院; 中国计量大学