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<br><br>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 150%/1 min, variable torque 120%/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 + Metal<br><br>Package Contents: 1x Universal Frequency converter<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.