How to choose an electric motor correctly

1. Select the electric motor based on the power supply voltage, usage conditions, and dragging object Require the power supply voltage to match the rated voltage of the motor
2. Choose different types of motors based on the installation location and working environment
3. Choose an electric motor based on capacity, efficiency, power factor, and speed If the capacity is chosen too small, it will cause long-term overload, affecting the service life of the motor and even burning out
If the capacity selection is too large, the output mechanical power of the motor cannot be fully utilized, and the power factor is not high Because the power factor and efficiency of an electric motor vary with the load
Under constant load operation, the power calculation formula for the electric motor is as follows:
P1
P＝――――
η1η
In the formula:
P-power of electric motor (KW);
P1- Production machinery power (KW);
η 1-- Efficiency of production machinery itself;
η - motor efficiency
The power calculated by the above formula may not necessarily be the same as the product specifications, so the rated power (P1) of the selected motor should be equal to or slightly greater than the calculated power.