METHOD OF ADMITTANCE TEST OF MAGNETOELECTRIC CURRENT METER AND DEVICE FOR ITS REALIZATION Russian patent published in 2001 - IPC

FIELD: manufacture of switchboard instruments of magnetoelectric system. SUBSTANCE: in accordance with invention calibrated current corresponding to rated value of first test point of scale is fed into tested magnetoelectric current meter. Maximum fall of voltage across scale resistor with flow of calibrated current is found and stored. Then supply of calibrated current is stopped, maximum fall of voltage induced in tested magnetoelectric meter after stoppage of supply of calibrated current is determined and stored. Difference between maximum fall of voltage and voltage across scale resistor is found and is compared with its tolerance zone. Process of test is repeated in second test point of scale. In this case time of one clock period is greater than damping time of magnetoelectric current meter. EFFECT: simplification of admittance test. 2 cl, 1 dwg