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Sean ManningAug 6, 2025
Why do the net fuses blow during startup with my Kemppi Master 1400 Welding System?
- DDaniel QuinnAug 6, 2025
The net fuses might be blowing due to several reasons: * A faulty primary side power semiconductor. You should check the condition of the primary rectifier and IGBT-module. * A faulty main circuit card. Inspect the smoothing and load capacitors and look for any insulation damages on the main circuit card. * A faulty secondary unit. Check the condition of the secondary diodes.
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