Permanently solved.

We develop solutions that work reliably and remain expandable for generations to come.

Meticulously designed; solutions built to last

We provide our customers with engineering solutions that work reliably and retain compatibility and expandability for generations to come. Our interdisciplinary teams keep every detail of your custom solution in focus, so that it will serve you reliably over the very-long-term. By retaining independence from single manufacturers, we have the freedom to always choose the very best solution for your project, while always keeping the system-level goals in sight.  

About us


F&S delivered, installed and commissioned a thyristor based softstarter (MCS 6C) at Deutsche Bahn frequency converter plant Bützow.The 6.3 kV, 1 kA softstarter is utilized to accelerate and synchronize a “10 MVA 50 Hz / 16.7 Hz synchronous motor generator set” to both grids. Therefore a new approach of W3C converter control - the synchronous softstart technology – was introduced with this project. The motor DOL current, of approx. 4-5 kA, was reduced to less than 500 A during start. Further, using synchronous softstart technology, leads to a smooth grid coupling by meeting the three common synchronization criteria. As a result, mechanical and thermal load during startup and synchronization was reduced significantly.

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Frequency converters

Electronic power solution for energy, industry and infrastructure.

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System-level solutions

We provide you with highly personalized and continuous support, which is why we understand your project and expectations during each and every project phase. Thanks to our unique company structure, we are highly flexible and react quickly to serve your individual needs.

System solutions

F&S Quality Management

The quality management system which we introduced in May of 2001 ensures that our products and processes are closely controlled and continually improved. We are highly dedicated to the idea that each and every team-member contributes to the evolution of our products and processes.