Re: Electrical question
You can get some idea from the estimated VA of any power units, motor sizes, power supplies, physical size of transformers etc.
If your transformer inputs are tapped for the 200/220/230 I would have thought 240 would not have been excessive on the 230v tap?
If you have the schematics, look to see what maybe affected the most, if any, by the higher voltage, you could almost treat that individual unit to the reduction, if the rest are not critical.
John is right, appears you have high side delta, I don't favour those set up's, myself.
Al.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.