... : Open, (Soundproof type is optional).*Frequency: 50Hz or 60 Hz,*Voltage: 230/400V*Phase: 3 phase.*Wire: 4 wires. Engine details ... :*Alternator brand: Stamford, Leroy Somer, Marathon series,*Excitation Mode: Brushless,*Regulator: AVR,*Protection Class: H*Short Circuit Protection: MCCB Automatic alarm system ...