Please I am fixing a small machine but the voltage to machine from the US is not standard over here. The 3 phase we have here is 415 volts but this machine is rated 220 volt 3 phase (it has a 3 phase motor). The problem is how do I get the 220 v 3 phase? In fact I used
3 separate auto transformers (not too similar) I observed the polarity and connected it in Delta - Star but any time I put in power it blows. I want to know whether the auto transformer is not suitable or I should use an isolated primary and secondary winding transformer. Apart from using a single 3 phase transformer is there any other Method? Thanks