FIELD: engines and pumps.
SUBSTANCE: engine is prepared for starting and started. After starting, engine rotor rpm vs time graph is plotted. Amplitudes of rotor rpm variations are isolated at said graph at section between starting time and time of setting behaviour. Now, difference in amplitudes related with reference and tested engines is defined. Said defined difference in amplitudes is used to define the rotor relative eccentricity.
EFFECT: determination of induction motor rotor eccentricity at idling.
2 dwg
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