... winch, conveyor, scrape plane, coal feeder, fans, pumps and oil pumps. 4.Technical Parameters Rated input featureAC 380V, AC ... relay outputDisplayDisplay screenSetting frequency, output frequency, current, power, motor speed, load rate, input and output torque, etc.Fault ... under voltage, short circuit, over-current, leakage etc.Explosion-proof marksExd[ib]IAir-cooled methodHeat pipe wind-cooling or heat ...