What is the difference between the rated power of the motor and the actual power

Update:23-11-2019
Summary:

The difference between the rated power of the motor and […]

The difference between the rated power of the motor and the actual power is that the motor is in the best working condition under this data. The rated voltage is fixed with a tolerance of 10%.
The actual power and actual current of the motor vary with the size of the load being dragged;
When the load of dragging is large, the actual power and the actual current are large; when the load of dragging is small, the actual power and the actual current are small.
The rated power of the motor is not equal to the load power. Because when choosing the motor capacity, consider the future aging of the dragged machine, so add a margin to the mechanical load power. The power level of the motor is not exactly equal to the mechanical calculation power, but also the power level of the motor, so the power of the motor is generally larger than the driven machine.
When the actual power and actual current are greater than the rated power and rated current, the motor will overheat and burn; if the actual power and actual current are less than the rated power and rated current, material waste will occur.
Their relationship is:
Rated power = rated current IN * rated voltage UN * root 3 * power factor

Actual power = actual current IN * actual voltage UN * root 3 * power factor

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