FIELD: electricity.
SUBSTANCE: in method of AC motor soft start, the motor is connected to a frequency converter, frequency start of the electric motor is carried out until the previously specified value of the frequency converter output voltage, which is less than the rated value of the electric motor supply frequency, afterwards the electric motor is disconnected from the specified frequency converter and is connected directly to the power supply network.
EFFECT: reduced required capacity and cost of the applied frequency converter.
9 cl, 2 dwg
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