RESEARCH OF LONG-TERM DRIFT OF THE NATIONAL INDUCTANCE STANDARD

Inductance measurements is important for all branches of technology related to the application electricity: energy and electronics, radio television, transport communication, scientific research. Electromechanical devices electronic components can be characterized using impedance identify parameters their equivalent electrical model. New inductance measurement methods are being developed in specific fields activity. Manufacturers standards measuring instruments develop special handbooks outlining various measurement. The State Primary Standard Ukraine loss angle tangent reproduces transmits a unit range from 1∙10-6 H 10 at frequency 1 kHz. It keeping SE “Ukrmetrteststandard” participated several comparisons national within framework activities regional metrological organizations. calibration capabilities laboratories different countries were studied analyze compare standard with other countries. Long-term instability studies measures mH, mH 100 which part inductance, have been conducted. research period covered 2009 2022. was established that drift lines specified described linear approximations. rationale choosing use as transmission standards, organized conducted by pilot laboratory, given.