... 630KW 220~660V frequency inverter / converter/ AC drives: With surprising wholesale price this year. Powtran product: Frequency inverter/converter ... and 690V.(fluctuating 15%) 0.75~630KW 220~660V frequency inverter / converter/ AC drives: 1. With surprising ... comBest regardsYours FaithfullyJason Bourne AC Drives, powtran frequency converter, frequency inverter, VFD VVVF variable frequency speed ...