What are the conditions for the parallel use of two generator sets? What device is used to complete the parallel work?

The condition for parallel use is that the instantaneous voltage, frequency and current of the two machines are consistent. Commonly known as "three simultaneous". And it is an all-copper brushless generator. And it is electronic speed regulation or electronic injection generator. 2) Use a dedicated parallel device to complete the parallel work. It is generally recommended to use fully automatic cabinets. Try not to manually parallel. Because the success or failure of manual paralleling depends on human experience.