Feature: 1. High Performance: The inverter uses faster microprocessor, adopts new main control board design scheme, optimized built in PID algorithm and precise torsion vector control, has better and more stable performance 2. Simple Operation: The VFD inverter is equipped with ergonomically designed human machine interactive key panel, displayed by dual digital tube, simple and clear, one key run and stop, easy to operate 3. Good Heat Dissipation Performance: The inverter is equipped with a cooling fan with fine craftsmanship, mute and has strong wind, heat can be quickly dispersed to the fins, provides good heat dissipation effect 4. Multiple Protection: The VFD converter can be protected against overload, overheat, overvoltage, undervoltage, overcurrent, phase loss, grounding, short circuit, stall, etc. 5. Application: The variable frequency drive can be widely used in constant pressure water supply, wind pressure and constant pressure control, etc. Specification: Item Type: Variable Frequency Drive Inverter Material: ABS Power (Output): 4KW Input: AC 3PH 380V±15% 10A 47-63Hz Output: AC 3PH 0V-380V 9A 0-400Hz. Package List: 1 x Variable Frequency Drive Inverter1 x Manual Note: Please install under professional guidance, pay attention to electricity safety and make good safety protection.