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Single-cabinet welders with patented IGBT solutions

In October last year, EFD Induction supplied an 1800 kW Weldac to SAFA in Iran. During the factory acceptance test, the unit was tested at 1918 kW/100 kHz into calorimetric load.

Small single-cabinet welders ranging from 150 kW to 300 kHz are also available using the same patented IGBT technology. But this marked the first delivery of a welder above one megawatt. "It’s evidence that the technology fulfils the specs at all power sizes," says Inggard Torvik, Managing Director of EFD Norway. “Based on our experience from 20 different welders at over 800 kW, it also shows the EFD Induction stronghold on high power welders,” says Torvik. EFD Induction has already received the next order for 1800 kW Weldac units, to be installed at Baoshan Steel in China. Together with these welders, EFD Induction will supply complete seam annealing equipment with orbital seam tracking and temperature supervision.