I bought the used machine with 11KW, 3P motor. Thinking that it's run by 480vac. We were getting ready to try it and just to make sure it is wired to 480 configuration I opened the motor terminal cover to check the connections. There a plate but the 480 is scratched, no 240/480 wire configuration diagram. It has 6 wires coming out fron motor. 2 wires to each phase, 3 pairs of wires to each phase. How can I determine if the motor is set up for 240, 3p or 480, 3p?
I was thinking of hooking up 240, 3p to it and measure the current and compare with calculated value.
Will the speed change fron 240 to 480? I know speed is determined by cycle and poles.