... is optional8) 400V/230V, 50Hz, 1500rpm, 0.8PF, AC three phase and 4 wires9) Frequency: 50HZ10)Frequency at stable state: < ... and over currentb) Operation display:i) Unit voltage, tri-phase load current and frequency displayii) Water temperature, oil pressure ... and water tank cooling systeme) Flange connectorf) 12V/24V starting motor and charge engineg) Air cleaner, fuel cleaner, oil cleanerh) ...