The power of diesel generators generally corresponds to the rated power and the actual power which are useful to us in practice.
The so-called rated power refers to the maximum power emitted during normal, continuous operation. In order to avoid the machine always running at 100% load, users usually reduce their usage by 10-15% based on this indicator.
Users cannot calculate the rated power because this value is given by the manufacturer and can be found on the nameplate along with the rated voltage, rated current, power factor and other parameters.
Actual power is an indicator of the generator's output power at a certain operating time. Calculation method:
Apparent power (VA) =√3x line voltage x line current
Active power (W) =√3x li voltagegne x line current x power factor
Generally, the starting current of a motor is about 3 times the rated current. When starting a 7.5 kW motor, it needs 3 times the 7.5 kW generator to start. Otherwise, the generator will be overloaded at that time. start, and the diesel engine will emit black smoke and stall. Your 12 kW generator cannot drive a 7.5 kW motor.