100% Duty cycle

[stick]

I am looking at a 256 powerpro and was wondering what the max amps this would run at 100% duty cycle. I see 35% for 250a tig and 35% for 200a stick. I don't know if their is a conversion you can do with these numbers or not. But I rarely need to now what I can run this at wide open all day long.
Thank you Jeremy

[jakeru]

I'd be interested in seeing some more duty cycle specs on Everlast machines that are officially supported by Everlast (such as the current vs. duty cycle graphs you'll find in competing welding machine owners manuals.)

However in the meantime, there are some quick and dirty duty cycle conversion formulas floating around on the internet. I don't know how these formulas are derived, and how accurate they are for an inverter power source, but here is an example:
http://ezinearticles.com/?Welder-Dut...ess&id=2414619

Current_needed = √ [((Current rated)^2 × (Duty Cycle rated)) ÷ (Duty Cycle needed)]

Plugging in the rated TIG specification of 250A TIG @ 35%, we could calculate 148 amps @ 100% duty cycle for the PP256 in TIG mode

[performance]

I saw this post earlier, but somehow got distracted from it. I didn't mean to let it go unanswered for so long.
The duty cycle ratings are on the back of the welders to 100%, if you have one of our units.
But I realize that many people don't have one, but I think there are at least two duty cycle ratings listed on the welders on the site, under the brochures...(though we may not have all the brochures up yet.)
Actually, Jake I am not sure where that formula came from, maybe for transformers....But the 100% rating is at 160 amps.
The thing about duty cycles, is that they aren't absolute. Many things affect them, including ambient temp, dirt inside the welder, input voltage, humidity, settings etc..Anyone wanting to push any welder close to its minimum 100% duty cycle at the rated amps needs a bigger welder. IF a customer is interested in pushing the duty cycle, it would be best to do so on a dedicated unit, not the all in ones. (I am not saying that the duty cycles don't hold up to our specs...they do...but when you have tight component space inside the all in ones, you have less margin of forgiveness.)

[jakeru]

The back of my Super200P just says: "Input AC 220V" :lol:

[stick]

Thanks for the feedback, Jake and support. 160 is pretty robust for most things. But I do agree with the dedicated machine idea. Jake I like that formula got us pretty close going to keep that one handy. Thanks again.