Software Controlled Procedure for Verification of the Voltage Measuring Transformer Accuracy

Solution of the experimental measurement and data acquisition system, designed for verification of the voltage measuring transformer accuracy in the laboratory conditions, is presented in this paper. Functional basis of developed solution is provided by virtual instrumentation software package LabVIEW .0. Described acquisition system includes standard PC configuration platform with application software, multifunctional calibration instrument Fluke 5100B for generation of the reference voltage signals and data acquisition card PCI NI 6251. Software application developed in LabVIEW programming environment, performs measurement, recording, presentation and statistical processing of transformer output voltage basic parameters. Statistical analysis of the obtained measuring results, with possibility for graphical presentation of recorded time diagrams for measured voltage parameter values, provides estimation of the mean measured parameter values and measuring uncertainty components, according to the relevant documents for estimation and expression of the uncertainty in measurement.