"RIV/00177016:_____/08:#0000414!RIV12-MPO-00177016" . . . "2008-01-01+01:00"^^ . "Use of a Current Source for Calibrating an Automatic Transformer Test Set" . . "Use of a Current Source for Calibrating an Automatic Transformer Test Set"@en . . . "401717" . "calibration; current source"@en . . "978-88-903149-3-3" . . . . "3"^^ . "Florence" . "Florence" . "University of Florence, Faculty of Engineering and Faculty of Economics" . . "V, Z(MSM6840770015)" . . "2"^^ . "This paper describes an innovative procedure for calibrating sets for evaluating instrument current transformer (ICT) errors. The innovation lies in the use of a current source for generating a measured current. There is an adjustable current source at 50 Hz mains frequency with a current transformer on its output. The internal impedance must be sufficiently high to eliminate the methodic error due to calibration. Calibration is carried out by means of a measuring system controlled by a PC through an IEEE 488 bus. Known values of the simulated ratio error and phase displacement are compared with the values measured by the device that is being tested. A software tool determines the simulated and measured error at each calibration point and determines whether the instrument that is being tested fulfils the parameters stated by the manufacturer." . . "Use of a Current Source for Calibrating an Automatic Transformer Test Set"@en . . "Stybl\u00EDkov\u00E1, Renata" . . "RIV/00177016:_____/08:#0000414" . "[4C0D0AA92228]" . "http://www.imeko.org/" . "Use of a Current Source for Calibrating an Automatic Transformer Test Set" . "16th IMEKO TC4 International Symposium" . . . "Ulvr, Michal" . . "Draxler, Karel" . "This paper describes an innovative procedure for calibrating sets for evaluating instrument current transformer (ICT) errors. The innovation lies in the use of a current source for generating a measured current. There is an adjustable current source at 50 Hz mains frequency with a current transformer on its output. The internal impedance must be sufficiently high to eliminate the methodic error due to calibration. Calibration is carried out by means of a measuring system controlled by a PC through an IEEE 488 bus. Known values of the simulated ratio error and phase displacement are compared with the values measured by the device that is being tested. A software tool determines the simulated and measured error at each calibration point and determines whether the instrument that is being tested fulfils the parameters stated by the manufacturer."@en . "4"^^ .