... follows:1. Voltage resource VFD, direct input of3,3.3,4.16,6,606 and 10 kV,direct output ... of 3,4.16, 6,6.6 and10 kV,no ... output filter required, can be directly connected to standard induction motor,no harm to the insulation of the cable or ... .2-1993 Semiconductor converters-Application guideGB/T 3859.3-1993 Semiconductor converters-Transformers and reactorsGB 4208-1993 ...