... and wind tunnel test.Technical Advantages:1. Wanlida MV VFD employs IGBT power units in series, obtaining MV by ... output performance without harmonics, at the same time, Wanlida MV VFD adopts advanced IGBT, rectifier bridge, PLC and electrolytic capacitor ... factory in domestic to produce motor protection relays, Medium voltage VFD, Static var compensator and Active power filter professionally at ...