New power-npc series diesel generator we provide can be warrant of its certified of origin. Especially, as oem factory we can keep perfect and reliable quality by the supports of original cummins enterprise. Rated voltage: 380v/220v Line way: 3 phases & 4 lines Frequency: 50hz Power factor: 0.8(lagging) We can also provide 60hz and other international standard requirements about diesel generator sets to comply with the demands of clients.