diesel generator set silent diesel generators soundproof diesel generator powered by Cummins, Lovol, Man, Deutz, Volvo, Doosan and Mitsubishi and China-made Engine Stamford, Marathon, Ennga and China-made Alternator 3-phase AC brushless * Power: 15kva-1600kva * Connect Type: 3-phase and 4-wire * Frequency: 50Hz * Voltage: 230/ 400V ( adjustable) * Voltage Control: AVR * Power Factor: 0.8 ( lagging) * Excitation Mode: Brushless Self-Excitation * Insulation Class: H/ H * Protection Grade: IP21-23