... , frequency meter, Ammeter, output(kw/kva), hourmeter, oil pressure, water temperature, Engine speed, mains frequency, battery voltage, fuel level.Protection:1) 3 phase Generator ... protections: Over-/under voltage, Over-/under frequency, Current/voltage asymmetry, Overcurrent/overload.2) 3 phase AMF function: Over/under frequency, Over-/under voltage, Voltage asymmetry.3 ...