METHOD OF MEASURING RESISTANCE TO DIRECT CURRENT Russian patent published in 2019 - IPC G01R27/08 

FIELD: metrology.

SUBSTANCE: invention relates to measurement equipment, and namely to the field of electrical measurements of resistance to direct current of two-terminal devices having high inductance. Method of measuring resistance to direct current of windings of electrical equipment consists in the fact that through serially connected winding and reference resistor passing constant stabilized current generated by current controller, voltage drops on the winding and the reference resistor are measured and their ratio is calculated, on the basis of which the required resistance of the winding is obtained. Further, when the current in the winding increases to a predetermined value, winding current and voltage are measured on it, based on the results of which the current controller transmission coefficient is calculated, after the current rise to the value close to the preset value, the control error signal is multiplied. At that, after the measuring current increases to a value close to the predetermined value, the control error signal is further integrated, current controller integrating element transfer coefficient is set in compliance with parameters of analyzed winding to be calculated on the basis of measurements made during current rise.

EFFECT: technical result is higher measurement accuracy.

1 cl, 2 dwg