Fangrui Product Details Frequency Converter Selection For Light Loads, Choose One Grade Larger (1.5kw Motor Chooses 2.2kw) And Selection Multiplies By 2 (2.2kw Motor Chooses 5.5kw). Because The Voltage Needs To Be Changed, The Pressure On The Inverter Is Relatively High, So Choose To Leave Enough Margin Power: 2.2kw Input Voltage: 220v(170v-240v) Single Phase/380v(330v-440v) Three Phase Output Voltage: 380v(330v-440v) Three Phase Frequency Range: 0.1-400hz Output Frequency Accuracy: 0.1hz Control Mode: Space Vector, V/f Control V/f Control: V/f Curve Can Be Set Arbitrarily To Meet The Needs Of Different Loads. Pid Controller: Built-in Pid Controller Rs485: Standard Rs485 (modbus) Communication Function Protective Function Overload Protection: Constant Torque /1 Min, Variable Torque /1 Min. Overvoltage Protection: Overvoltage Protection Can Be Configured. Undervoltage Protection: Protection Can Be Set Other Protections: Short Circuit Protection, Over Current Protection, Parameter Lock, Etc. Colour:black Material:plastic