Analysis on the Design and Application of the Protection Circuit of the Low Voltage Motor

With the constant innovation and development of the science and technology, the start and protection model performance of the motor is higher and higher. The traditional with the "star - triangle way" of the motor start under the condition of the starting torque can't be used. It can only be used to comply with the conditions of use occasions, and the coupling stress reliever the drawback of the starting motor is also exist. In recent years, the low voltage electric motors and high voltage motor startup mode has changed; the low voltage motor is basic electronic soft start and frequency converter start, the high voltage motor is the liquid resistance step-down start. The tradition protection method of the low voltage motor and high voltage motor can act as a motor starting and protection basically.