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The so-called #softstart means that the voltage we add to him at the beginning of the start is lower than the rated voltage. Common #softstart are: soft starter start, autotransformer step-down start. Autotransformer step-down start-up In the early stage of starting the motor, first add a voltage of 60% to 80% of the rated voltage to it, let it move first, and then switch it to work under the rated voltage after it starts to rotate. It is a simple #softstart process. The soft starter is more advanced than the autotransformer step-down start. The principle is the same.
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