Permanently solved.

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

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In order to be able to maintain and test dual-system vehicles DC 750 V and AC 15 kV 16.7 Hz in the future, Stern & Hafferl Verkehrsgesellschaft m.b.H. needs a suitable possibility for feeding the vehicles for its railroad workshop in Eferding. However, the nearest ÖBB overhead line is so far away that a branch line is out of the question. Our solution:

a special converter based on the F&S LC2 converter family, which provides a 15 kV supply from the existing 750 V overhead line voltage. Despite the low power of 300 kVA, it is possible to connect and operate multiple unit trains with several megawatts of power on the overhead line thanks to our specially developed active saturation damping. To minimize commissioning time, F&S will supply the converter, including output transformer, controls and cooling, as an integrated, compact and pre-tested containerized unit.

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

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.