PTC three-phase asynchronous motor protection circuit 5
Source: InternetPublisher:李商隐身 Keywords: PTC protection circuit three-phase asynchronous motor motor protection Updated: 2021/05/26
This circuit eliminates the need for a dedicated transformer, uses the contactor coil as the original winding, and winds a
secondary winding instead (whether it can be wound depends on the structure of the magnetic conductor of the contactor). In addition, this circuit uses bidirectional thyristors instead of
electromagnetic actuators. Adjust the potentiometer RP to change the protection operating temperature.
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