AC current automatic calibration using two different TCC designs

作     者：Rasha S M Ali 

作者机构：Department of Electrical Quantities MetrologyNational Institute for Standards(NIS) 

出 版 物：《Journal of Measurement Science and Instrumentation》 (测试科学与仪器（英文版）)

年 卷 期：2013年第4卷第3期

页      面：205-209页

学科分类：080802[工学-电力系统及其自动化] 0808[工学-电气工程] 08[工学] 

主　　题：AC current calibrations thermal current converter (TCC) current shunt resistor electromotive force (EMF) AC-DC difference uncertaintyCLC number:TM930.12 Document code:AArticle ID:1674-8042(2013)03-0205-05 

摘      要：AC currents are automatically calibrated by two different thermal current converter(TCC)*** two designs are different in the used number of the thermal-elements(TEs).Consequently they differ in their output electro motive force(EMF).Studying the effect of changing the output EMF is done in this paper through calibrating AC currents.5 mA and 5 A are accurately calibrated at different frequencies 55 Hz,1 kHz and10 kHz by the two TCCs.A comparison is made between the results to evaluate the effect of the output EMF value on the accuracy and the uncertainty of the low and higher AC current calibration.A LabVIEW program is designed for this accurate automatic calibration to overcome the problems of the manual calibration on the thermal converters.