3.7KW 220V Monofase A Trifase VFD Inverter Frequenza Variabile Motore Drive. This is a simple vector inverter that can automatically increase the torsional moment. Built-in protection functions such as: accelerating overvoltage, deceleration overpressure, constant speed overpressure, running undervoltage, accelerating overcurrent, deceleration overcurrent, uniform overcurrent, inverter overload, motor overload, CPU fault, etc. PID automatic adjustment function, more convenient to use. Digital display, clear numerical display, easy reading. Simple to operate and wire, fast start and stop ...