Evaluation of temperature instability of high-voltage capacitive divider

While designing the measurement transducer, that has wide range of working temperatures, it is important to evaluate instability of temperature coefficient of transmission. For high-voltage transformers according to GOST R IEC 60044-7 established method of estimating temperature instability. This estimate suggests experimental verification of metrological characteristics of the converter at the extremes of the operating temperature range. However, the error that we explore is a complex function. This function may include an extremum in the tested range, resulting in an incorrect evalua¬tion. This article discusses the evaluation of thermal instability by Monte-Carlo method. Error estimation was produced for different temperatures. The dependences of additional errors from the temperature are obtained.