FIELD: electrical engineering; checking rotation of induction motor, including gyromotor horizon.
SUBSTANCE: proposed induction-motor checkup system has static current converter, control unit, generator, turn-on unit, delay shaper, and reset shaper. Static current converter outputs are connected to phase leads of induction motor; control unit is connected to two phase leads of induction motor and to checkup bus; generator output is connected to control unit input and to one of inputs of delay shaper whose other input is connected to reset shaper. Delay shaper output is connected to input of turn-on unit inserted between control unit and static current converter.
EFFECT: enhanced reliability of induction motor starting.
1 cl, 1 dwg
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