i have never worked with 220VAC 3 phase power before. The application requires a control relay to be used to start a VFD in the existing system. The plant responded that the control voltage was 220VAC as well. I thought this was a mistake having never worked with anything over 120VAC. My question is how do you get the 220VAC single phase from the 220VAC three phase. I have become very confused with this.