This is three phase VFD with 3 phase 380V input and 3 phase 380V output and with power of 4KW For 22KW variable frequency drive we provide both single phase 380V and three phase 380V input When used for single phase, another phase can be used as a spare line. The driver board is cleaned and painted. Adopted with the intel and SILICON LABS chip, with communication port. <400V) protection, restart protection, stall protection, short-circuit protection and over-heat protection. Adopts large area of cooling vents and a forced air-cooled fan, offering powerful cooling capacity. Applied in machinery winding machine, mixer, extruder, slitter, winder, compressor, ventilator, pump, grinder, elevator and other speed control machines.