Owing to our rich industrial experience, we have been a well known manufacturer of Delta Three Phase VFD in the market. When 3 phase input is used, the wiring must be processed through an inverter to yield DC current. The wiring in Delta Three Phase VFD is similar to a single phase input, with the exception of multiple leads being inverted. The mechanical operation of the VFD remains the same, and output is controlled by the VFD.