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Not sure if this is the best place for this question, but here goes: I'm comparing some inverter TIG units, and it struck me how the input power requirements varied widely - these are all 175 - 200A class machines, mostly name brands but I did throw an offshore unit in there for comparison. Input power requirements vary from 17.4 to 30A @ 230V. I collected all the data and it's in an attachment, hopefully it's both attached and legible.On the one hand, it seems odd to me that the efficiencies vary so widely, as I would have thought the inverter machines are mostly the same technology. On the other, the efficiencies do match up with the duty cycles - the machines that eat up less power in the circuitry can run longer.So my question, after all that, is whether I have any errors in this analysis, or if anyone has any additional comments.The reason this is all pertinent is that if I get a more efficient machine I can save on wiring.Tim Attached Images
Reply:Your output volts and amps are reversed. I think you might be getting to technical with your purchase. JohnSMAW,GMAW,FCAW,GTAW,SAW,PAC/PAW/OFCand Shielding Gases. There all here. :
Reply:Originally Posted by weldgaultYour output volts and amps are reversed. I think you might be getting to technical with your purchase. John
Reply:don't get too hung up with the 'on paper' specsif you download the dynasty owners manual you'll find it can pull a max of 35A on 230V 1phase.my invertec is similar- can pull 34A @ 230Vin the UK (at least) both these machines would be fused (230V) with a 16A slow trip breaker- they do not pull high amps all the time but can for a very short time |
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发表于 2021-9-1 00:04:10