Rectifier vs inverter?

[DennisCA]

Seller accepted the price I will go and look at it friday is the plan now. This one is also a 3-phase version

 

[eddie49]

From the User Manual
https://resources.userdoc.kemppi.com/manuals/kempomat-om-en.pdf
Power source
Supply voltage of the Kempomat 2500 power source is 3~ 230 V/400 V. Welding voltage adjustment is in 10-steps.

So it is a 3-phase-only machine.

 

[Munkul]

3 phase sounds ideal for Dennis