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The manual series resistor to start three-phase motor circui

2016-09-02 17:53  
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The manual series resistor to start three-phase motor circuit
Operation method: you can click the start button ST, and AC contactor KMT will pull in, then the motor M connected to the startup resistor R in series will start. Until the motor speed is up to 70% of rated speed, and then clicking the run button SN again, KMN pulls in, and its main contact makes R be shorted connected and provides rated voltage for motor M, then the motor will enter the rated operating status.