GEAR TO DETECT DAMAGE OF BARS IN SHORT-CIRCUITED WINDING OF ROTOR OF ASYNCHRONOUS MOTOR

FIELD: electric measurement technology, development of equipment for diagnostics of bars of rotors of asynchronous motors. SUBSTANCE: proposed gear includes portable electromagnetic pickup, rejection filter tuned to frequency of 50 Hz, additional rejection filter with frequency of 150 Hz, additional...

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Bibliographische Detailangaben
Hauptverfasser:	RASSKAZCHIKOV A.V, SAVEL'EV V.A, SKOROBOGATOV A.A, NAZARYCHEV A.N
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS TESTING
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Beschreibung
Zusammenfassung:	FIELD: electric measurement technology, development of equipment for diagnostics of bars of rotors of asynchronous motors. SUBSTANCE: proposed gear includes portable electromagnetic pickup, rejection filter tuned to frequency of 50 Hz, additional rejection filter with frequency of 150 Hz, additional unit of spatial placement of bars to generate signal of spatial distribution of bars of rotor containing full-wave rectifier, double frequency filter and counting flip-flop for frequency division, recorder of rotor revolutions, counter of number of bars, counter of rotor revolutions, units of parallel flip-flops, units of AND gates, indicator. EFFECT: enhanced adaptability of gear to installation of pickups and electric safety, excluded probability of failure of asynchronous motor under operating conditions due to presence of pickups of gear inside motor frame, increased accuracy of determination of damage to rotor winding under conditions close to idle running 6 dwg .