Abstract

This article presents a comparison between different welding machines, helping to determine the impact of different control technologies on the grid, comparing harmonic current data collected from the connection node between the grid and two welding machines during normal welding operation. Pulsed welding machines have more harmonic distortion when compared to not pulse welding machine. Because each manufacturer has its own know-how, develop a more general comparison rule to compare all equipment on the market would require much more deep and extensive analysis. The article presents comparison techniques to make the best welding machine choice for the existing electrical installation profile or the best match for the project.

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