best rotary screw air compressor

The pressure of air compressor after frequency conversion is always kept the required set working pressure,which can be reduced by10% compared with that before transformation.According to the power consumption formula ,the energy consumption after unlodaing ,and it can be saved by 10% according to the average unloading operation is about 40% of that during loading and make the motor start and load the current rise gently ,without any impact;