Have a CT-200 Hobart Welder Getting high frequency but no current?

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Section 12 - Parts List - Hobart Champion 4500 Owner's Manual. Engine driven welding generator. Show thumbs.

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It’s close enough not to be able to answer that. The inrush current of a welder is huge anyway, so it could exceed the instantaneous capacity of the generator. However, it’s also possible with capacitance in the welder to smooth that out, that it will work fine. The only way to be sure is to test it. If you can’t do that before purchasing, it’s a risk you take. On balance it should work, but may not.

The first thing to check would be to see if you have open circuit voltage at the weld output terminals when you push the pedal. Make sure the high frequency is off if you are going to to check with a multimeter. After that if you do have OCV but no high frequency to start the arc, try it in start and in continuous. When you put it in continuous it bypasses a control relay. Also check the HF points to make sure they are clean and gapped to about ten thousandths.

Sorry we do not have those diagrams.

I am having the same exact problem on an old Hobart Beta Mig 200
sometimes i can weld for 5 minutes and other times as soon as I hit the trigger it trips the 50amp breaker. Any help?

DC current, electrode negative (DC Straight, DC-), High frequency for start only (really don't have to use high freq at all for steel but it helps establish the arc without scratching), 1 amp per thousandth of material thickness is a good setting to start, adjust from there for the job. 1 amp/thousandth also applies to aluminum- it has a lower melting point than steel but conducts heat much better so power to weld is very nearly the same.

Use a sharp tungsten, don't ball it at all (as you would for AC work).

lp

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Sounds like your CT or CT board is bad. CT stands for Current Transformer. A CT senses an increase in voltage draw or current, which will trigger the idle solenoid.

Hi Steve
my name is Rob

The cyber tig brand covers a lot of ground some of it older than me!

critical questions
do you have a parts list?

can you get from the machine
Model number
Spec number

do you have any drawings?

if these are all no all is not lost.
I can get a transformer custom made. i would need some details from the old unit.
Please let me know.

Regards
Rob Lee

you need to replace the gfci,the older gfci's interpret these frequencies as a shock hazard and shut off power to the circuit.you can buy @hobart, part#913053, that should solve the trip problem. dont forget to vote thanks monomoy