Rail systems
Design, renewal and documentation for on-board electronics and control boards. The hardest part of this sector is not the board itself but the file that makes it sellable — we build both together.
- 01
On-board power conversion
Auxiliary power groups, DC/DC conversion and battery interfaces, adapted to the voltage levels on the vehicle.
- 02
Control board design
Requirements analysis, schematic, component selection, PCB and assembly — with traceable requirement-to-test matching.
- 03
Board renewal and modernisation
Redesign of boards that can no longer be sourced because their components are obsolete, using current equivalents.
- 04
Test plan and conformity file
Defining the type test scope, planning laboratory work, compiling the declaration and the technical file.
- 05
Insulation monitoring and safety functions
Continuous monitoring of insulation resistance in high-voltage systems, with fault reporting. We are developing our own unit in this area.
- 06
Tunnel, platform and on-board lighting
Isolated multi-channel drivers and movement-adaptive lighting control, managed centrally over CAN.
Our working framework
- EN 50155Electronic equipment on rolling stock: temperature, humidity, supply interruption classes
- EN 50121-3-2Electromagnetic compatibility — apparatus on rolling stock
- EN 61373Shock and vibration testing
- EN 45545-2Fire behaviour of materials
- EN 50126RAMS — reliability, availability, maintainability, safety
- EN 50128 / 50657Safety integrity levels for products containing software
- IPC-2221 / IPC-A-610PCB design rules and assembly acceptance criteria
Our work in the field
These capabilities are not theoretical: we are actively delivering work on the rail side.
Locomotive power board repair
Component-level investigation of faulty power boards, identification of the root cause and repair. Where obsolete components make a board unobtainable, we move to a redesign using current equivalents.
- Scope
- Repair · renewal
- Status
- Ongoing
ATS systems
Board and connection work on automatic train stop systems, with field installation and commissioning support.
- Scope
- Board · field
- Status
- Ongoing
7.5 kW power converter
Supply and engineering work on a power converter for rail system applications.
- Scope
- Power conversion
- Status
- Ongoing
Vehicle types, board codes and technical detail are covered by customer confidentiality and are shared during quotation discussions.
What we check when repairing a power board
Faults in locomotive power boards rarely come from a single component; they are usually a chain in which one failure triggers the next. Before a repair is delivered we run the following checks on every board and replace whatever we find.
- Damage from voltage surges and spikes
- Fuse, NTC and bridge rectifier faults
- Capacitance loss in high-voltage electrolytic capacitors
- ESR rise, bulging and dry-out in capacitors
- MOSFET overheating and short circuit checks
- Gate driver circuit faults
- Isolation faults: optocouplers and transformers
- Schottky and fast diode failures
- PWM controller IC faults
- Unstable or incorrect voltage regulation
- Shortened component life from heat, humidity and dust
- Solder cracks caused by vibration and shock
- Replacement of overstressed or low-grade components with quality equivalents
Where a board cannot be sourced because its components are out of production, we move to a new design that delivers the same function with current equivalents — which makes the board manufacturable again.
Send us your specification
Which test class, which interfaces, which delivery schedule — let our engineering team scope it.