... GB/T2820;Altitude:0~1000m;Ambient temperature:-35~40°C;Relative humidity :95%Standard scope of supply:Generator-set assembly( ... brands available. One phase is optional.Control system function:start and stop function.Panel: voltage, current, frequency, power factor, power ... running hours, temperature, etc.Failure protection(alarm and stop)function:over speed/speed signal loss alarm, low oil pressure ...