DEF is a pioneer in applying hollow conductor technology to machines in the lower megawatt power range. What was once reserved for large turbo generators has been successfully transferred by DEF to smaller-scale machines. By 2040, it is expected that all high-performance machines, especially in mobility and automation, will rely on hollow conductor cooling.With over a decade of experience, DEF combines deep system expertise with strong technical innovation.

As a development partner for industry and research, we deliver not just machines, but well-thought-out complete solutions – from thermal design to full system integration. Our interdisciplinary team across engineering, manufacturing, and project management enables short development cycles, high adaptability, and uncompromising quality.