Huyndai hit 15s retrofit

This is the first time i see 3x220v input with 3x400v output, it is usually the other way round.

I agree, ill do some more investgating today, i know the 400v goes to the spindle motor from the contactor but im not sure where the other 220 3ph goes. Ill poke aroubd today

Check out the Siemens power supply module. It provides the DC bus power to the Siemens 611 drive modules. Post the model number if you can

The power supply is a clever one. Sensitive to phase sequence as well as supply voltage. It is not just a rectifier with caps, it is actually an  active igbt rectifier with regenerating capability. 

This means that it can consume energy from the DC bus during spindle deceleration and push it back into the supply, making it much more efficient.

​​​​​​THis also causes problems for diesel generators as they are not designed to be driven by its load and they normally cut out or trip.

I will take a bunch of pics today, the gen im picking up was a natural gas/ propane gen that im going to convert to gasoline. Intresting about the power supply i was wondering why i didnt see a regen on it like the haas's i run

Some more pics 
This is what there calling a reactor
   

Line in from transformer etc