... ,Stamford,Leroysomer,etc open generatorswith different brand engine and alternator,e.g.Cummins, Perkins,Cat,Lister,John deer,Stamford ... up to 120kW2) Engine:Weichai Ricardo series3) Alternator: Chinese brand ST and STC series brush alternators and "B" Class Insulation. ... is optional8) 230 / 400V AC, 50Hz / 60Hz, 0.8pF three-phase and four wires alternating current output9) Frequency: <3%10) Frequency ...