FIELD: electricity.
SUBSTANCE: invention is related to the field of instrument making and may be used for determination of instantaneous values of single-phase transformer magnetisation inductivity in working mode or in idle mode. In order to achieve this result instantaneous values of voltages and currents of transformer windings are registered. Then these voltages and currents are reduced to the primary circuit. At the same time instantaneous values of magnetisation voltage and current are determined. Instantaneous values of magnetisation voltage are defined as mean average of instantaneous values of reduced voltages at transformer windings. Instantaneous values of magnetisation current are determined as difference of instantaneous values of input current and reduced output current. Then active resistance of magnetisation branch is determined.
EFFECT: expansion of method functional resources.
3 dwg, 1 tbl
