Let's pick up where we left off, where we left off in order toThree-phase asynchronous motorOverload work, before the heat generated reaches the limit temperature, to ensure that the motor winding is not burned, it is necessary to let the motor stop working, we will call this protection overheating protection, today Senli Motor Xiaobao continue to take you to understand about overheating protection measures.

       For some motors that need to run for a long time, when selecting the motor relay, there needs to be enough current to match the rated current of the motor, which will not cause wrong action at the start; The overheating protection is actually the protection for single-phase operation, which is inAc induction motorIs an important question;

       Three-phase asynchronous motor in the rated load normal operation, three-phase power supply appears any broken line, then in the heating conditions within the operating range of torque is very low, but if the motor is still in the original rated load operation, then it is necessary to use greater torque to balance the load torque, at this time the rotor current and rated current will exceed the value, again serious overload, Causing the motor to burn out.

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