The power motor factory will also choose the analog method to test when choosing the power, the so-called analog method.It is compared with the power of electric motors used in similar machines.Specific method is: understand this unit or the similar production machinery of nearby other units USES the motor of much big power, choose the motor of similar power to undertake trial run next.The purpose of the test run is to verify whether the selected motor matches the production machine.The verification method is to make the motor drive the production machinery to run, measure the working current of the motor with a clamp ammeter, and compare the measured current with the rated current marked on the motor nameplate.If the actual working current of the electrical machine and the rated current marked on the Ming spleen do not differ much up and down.Indicates that the power of the selected motor is appropriate.If the actual operating current of the motor is about 70% lower than the rated current indicated on the nameplate.It shows that the power of the motor is too large (that is, the "big horse and small car" should replace the motor with a smaller power.If the measured operating current of the motor is more than 40% greater than the rated current indicated on the nameplate.It indicates that the power selection of the motor is too small.
