Title :
Calibration system for electronic instrument transformers with digital output
Author_Institution :
Inst. for Nat. Meas. Stand., Nat. Res. Council of Canada, Ottawa, Ont., Canada
Abstract :
A high-accuracy system for calibration of electronic instrument transformers with digital output is described. Its design is based on International Electrotechnical Commission (IEC) standards 61850, 60044-8, and 60044-7. The performance of the calibration system has been evaluated. Its estimated relative uncertainty (2/spl sigma/) is within 40/spl middot/10/sup -6/ in magnitude and within 40 /spl mu/rad in phase.
Keywords :
"Calibration","Instrument transformers","Transducers","IEC standards","Optical sensors","Substation protection","Electrical capacitance tomography","Voltage","Discrete Fourier transforms","Transformer cores"
Journal_Title :
IEEE Transactions on Instrumentation and Measurement
DOI :
10.1109/TIM.2004.843420
