УСТРОЙСТВО ДЛЯ ПОВЕРКИ ИЗМЕРИТЕЛЬНЫХ ТРАНСФОРМАТОРОВ НАПРЯЖЕНИЯ

摘要

FIELD: instrument engineering. ^ SUBSTANCE: current comparator is made with adjustable transformation factor. First arm of comparator is single-decade and it is connected to low-voltage output of high-voltage capacitance voltage divider. Midpoint is connected with grounded output of calibrated measuring voltage transformer. Second arm of comparator is multi-decade and it is connected to secondary winding of tested measurement voltage transformer through multi-cascade current divider and permanent and variable capacitor, connected in parallel. Primary winding of first cascade of multi-cascade current divider is connected in series with winding of second arm of current comparator. ^ EFFECT: widened functional abilities. ^ 1 dwg