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Re: More Tuning/Debugging Next
In a message dated 96-09-04 01:12:22 EDT, you write:
<< > If I remember correctly, you were using multiple oven elements for
> resistive ballast? try using fewer elements. This will reduce the
> dampening of your arc welders inductance.
>
> jim
All,
Here, here, I second the motion. We have struggled here in Richmond to
learn all this the hard way too. On tape #8 1990 we finalize this maxim
for all to see. The resistance is a must for all the above reasons with
pole type xfrmers. Bill Richards ignited a lamp socket in his ceiling.
He also burned out a wall light switch. Alex Tajnsek took out a stove
exhaust fan (caught fire). The bunggy cord nature of the resitive
portion of the ballast mushes the response of the big inductor. Gotta
have it for best operation! I believe it was in 1990 that I wrote a
sysergistic tune paper for Harry Goldman. This covered spark gaps, etc.
Richard Hull, TCBOR >>
Jim and Richard,
Thanks for the advice. I had been using three 2000 watt oven elements (each
in parallel) in parallel with the welder which is ballasting the pole pig.
This is a 5 KVA pig that I have been running up to 7 or 8 KVA. As I
mentioned, with my recent changes in the primary circuit the gaps will not
fire with the old configuration and the system would only work well with the
resistive elements unplugged - i.e. welder only. What would you suggest
here? Just trying two elements then one element in parallel with the welder
and check system performance? I have up to six or seven 2000 watt elements
that can be used. Is there any value in trying the elements in series with
the welder? I did try that in the old configuration and performance went
down.
Thanks, Ed Sonderman