By-pass condenser for Hi Freq add-on box?

[Alan]

Manual on my Lincoln 500 amp HI-Freq calls for installing a by-pass condenser when used with a transformer welder. The kit came with the box, I didn't acquire the welder. Can an off the shelf condenser (or additional components) be sized to this 500 amp unit?

I didn't install this condenser the first time and something fried. Was told by tech at that time you need to down rate the welder when running AC with Hi-freq, he didn't mention anything about the lack of this by-pass condenser.

Any ideas?

Thanks,

Alan

[runchman]

Something fried on the hi-freq unit or something fried on the welder?

I would think if something fried on the hi-freq unit, it wasn't because of the missing condenser (capacitor), since the manual says the bypass condensor is to protect the welder.

Can you supply more info on what fried?

- John

[runchman]

Is the attached picture a correct understanding of how this thing is hooked up?

[David R]

I had to put one in my Weldmanpower G7. Its just a cap across the outputs. I bought it from Lincoln for a few bucks. Never had any trouble tigging on AC with it at all.

David

[Joker11]

I am not clear on when or why this is required. I have a Ranger 9 and a Hi Freq Tig Module. I have added nothing to it and seems ok, but how do I know I don't need it?

[bruceb]

More than likely it is required to lower the output voltage of the torch output during the hi-freq stage if the torch isn't close enough to the work to conduct. For example, you accidentally stepped on the foot control with the torch in mid air.

[David R]

Originally Posted by Joker11

I am not clear on when or why this is required. I have a Ranger 9 and a Hi Freq Tig Module. I have added nothing to it and seems ok, but how do I know I don't need it?

Read the manual.

David

[Joker11]

Read the manual? Now you are just asking too much! hehhe.
Actually, I have read the manual. I don't recall anything about that, so I am going to leave well enough alone.

[David R]

AC current is some how rectafied when you tig. This is what can toast your welder. I guess I missed what machine its being used on.

David