It's basically a ranger 10, 3cyl perkins/shibaura with an AC welding end, tapped reactor for the main current control, variable excitation for the fine current. The cv output is good for 30v.
Collected, unloaded, load tested... all seems to be in order. Found a suitable replacement idle solenoid on ebay for 30 quid. Just need to see if I can wind it down to 3000rpm (50hz) without burning up the voltage control.