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Subject: Re: ac/dc converter
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Date: 02/09/03 at 6:56 PM
Posted by: Russ Kincaid
In Reply to: ac/dc converter posted by suryakant on 02/04/03 at 4:25 AM:
I think you are using a carbon arc as a heat source. If so, you don't need DC; the arc will be easier to manage with AC. If the furnace is well insulated, you don't need so much power either, unless you want to ramp the temperature up rapidly. A 120KVA welding transformer should do the job, but you may have to have it custom made because I never saw a 2500 amp welder. The power source, at 440 volts will have to supply around 300 amps. The power company will have to install a high voltage line and transformer, so you might as well talk to the power company to see if a welding transformer can be obtained that will work from their voltage (maybe 3300 volts). This will be a very expensive project.
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