The intelligent SEJ-MFDC DIT series inverters have been
specifically designed for spot, projection and resistance seam
welding. The extensive control functions guarantee high process
reliability. The SEJ-MFDC DIT family offers a variety of additional
functions for welding high-strength metals, aluminum and
three-member joints.
The 1,**0 Hz medium frequency/DC technology has proved its
particular economic efficiency in many applications in contrast to
other processes:
Higher welding quality via more dynamic current control than for
the AC system
Weldability of many materials increased by more intensive energy
supply
Spatter reduced by decreased welding current and/or current
time
Electrode life lengthened thanks to lower thermal and mechanical
load on the electrode caps
Smaller and lighter transformers for integration in the electrode
holders
