OLEH GRYGOROVYCH BUTENKOS METHOD FOR CHECK OF SCALING VOLTAGE TRANSFORMER

摘要

Method for check of scaling voltage transformer relates to electric measuring equipment. The method includes leveling potentials of outputs of scaling voltage transformer that is checked, and supplementary scaling voltage transformer through change of voltage of low voltage power supply source of scaling voltage transformer that is checked, at equality of potentials on high-voltage outputs of those, after that one performs measurement of value of voltage. At that measurement of value of voltage is carried out two times, at least between zero outputs of scaling voltage transformers at equality of potentials on low-voltage outputs of scaling transformers of voltage and between low-voltage outputs of scaling voltage transformers at equality of potentials on zero outputs of scaling voltage transformers. By results of measurements one evaluates metrological characteristics of scaling voltage transformer that is checked. At that at equality of values of high voltages of scaling voltage transformers one additionally measures values of voltage on low-voltage output of supplementary scaling voltage transformer. And at equality of potentials on low-voltage outputs of scaling voltage transformers one measures repetitively values of voltage on low-voltage output of supplementary scaling voltage transformer with determination of coefficient of scaling transformation of scaling transformer that ie checked. The method makes it possible to increase quality and effectiveness of check and to decrease duration of process of check of scaling voltage transformer.