Principle: The theory is to synchronize two generators so that they can both supply the same load. Their output voltage, frequency, and phase are matched so they can operate in parallel which will add the capacity of the second machine to the first. Once in sync, they will tend to keep each other in sync and if one generator engine shuts off or fails to keep up, the other will run that generator as a motor, quite possibly damaging the alternator and engine. Use generators that have manual controls to adjust engine speed (frequency) and voltage. The generator receptacle panels should each have a 120-volt convenience outlet to use as the alternator leads to sync the generators. The larger 120/240 volt 30 or 50 amp receptacle is used to parallel the generator outputs and supply the load and must have its own breaker to turn the output on and off. This is breaker referred to below. 120/240 volt generators have two hot leads and one neutral. One lead is L1, the other is L2...
This blog mainly shares technical problems and solution of diesel generator set