Design of a Standard Current Transformer for On-Line Calibration
Shuhong Hu, Yan Xu · 2013
This paper introduces the design of a standard current transformer for on-line calibration. The current trans- former based on the electromagnetic induction theory works with dual cores and has the passive compensation circuit. It not only can be installed on line due to the open-close structure, but also possesses a strong anti-jam capability. The output of the current transformer is small analog signal which can be picked up directly by acquisition system. The testing results show that the accuracy class of the current transformer is better than 0.05 and it still can meet the stan- dard when opened and closed 50 times.