run a kemppi pss5000 welder with a genset?

[Graham w]

hi, as title can you run a kemppi pss5000 with a generator with TIG on AC for aluminum and DC for stainless?

 

i know the smaller ps3500 kemppi will run MMA no problems but never used anything else with the generator

 

Kemppi Pss 5000 Ac Dc Tig Mig Stick 3 Phase Welder | eBay

 

thanks

[agrimog]

your going to need a very very big generator to run that !

[openspaceman]

your going to need a very very big generator to run that !

 

won't it also be unbalanced and just draw from 380V across 1phase?

[peatff]

I'd go with no on that. You need 8kva to run my 180 amp Kemppi mig inverter to it's maximum according to the manual. A big old transformer beast like that with all the inrush current will probably destroy a generator windings in no time.

[Graham w]

I can see your point so had a look at the brochure and the 500 amp only requires a 28 kva and the 280 amp requires 7.2 kva power supply. i hope running the welder should be trouble free

 

found a company called Westermans that specialize in these old beasts, but they are not open on sundays:laugh1:

 

http://www.westermans.com/downloads/kemppi%20multisystem.pdf

 

by inrush current do you mean instant very high load?

[peatff]

by inrush current do you mean instant very high load?

 

There's a big spike every time you arc up, probably I got the wrong name for it but if you weld on home electricity it can trip breakers but if you upgrade to a slower trip (from a B to a C) it will cope with the surge then continue as normal but generators don't cope with this so well. 7.2kva sounds a bit optimistic to run a 280 amp.

Edited February 1, 2015 by peatff

[Graham w]

im currently running the 350 amp rated at 13.2kva on the 20kva gen and seems to be happy enough. i think these welders are designed to have a low power consumption to make them more versatile. planning to run the 500 on a 100kva.

 

is there a way of protecting the generator from high currents, there must be generator powered welders on ships, oil rigs etc.

 

better drop gensetsteve a pm

[gensetsteve]

im currently running the 350 amp rated at 13.2kva on the 20kva gen and seems to be happy enough. i think these welders are designed to have a low power consumption to make them more versatile. planning to run the 500 on a 100kva.

 

is there a way of protecting the generator from high currents, there must be generator powered welders on ships, oil rigs etc.

 

better drop gensetsteve a pm

 

My knowledge on running welders is a bit thin as I tend to deal with big standbys for buildings. I know welders are very cruel on Gensets. I would talk to Genset in South Wales they are big into welders or mosa they should have some good info. If we have some big start up loads ie motors we install a permanent magnet generator or pm alternator. This set often has an avr and a separate transformer excitation. Means you can often install a much smaller set and once the load is running the generator is less likely to slobber on light load and glaze up the cylinders. Hope this helps if I think of anything else will post up.