... .h for fuel consumption,50/60Hz,0.8 lagging for power frequency,1500/1800rpm,3-phase 4-wire or 1-phase 3 ... brushless6) Key start or auto start7) 8hrs operating base tank8) Frequency:3%a) Frequency at stable state: less than 0.5%b ... currentb) Operation displayi) Unit voltage,tri-phase load current and frequency displayii) Water temperature,oill pressure displayiii) Fuel level,fuel temperature ...