Railway Power Supplies

Power solutions for railway and transportation systems have to meet a range of technical specifications and logistic requirements in order to be installed and operated reliably on rolling stock, trackside infrastructure and other mobile platforms. Our engineering and project management teams are experts in this area.

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Our Railway Capabilities

Thousands of XP Power products have been installed on rolling stock and trackside equipment globally. Applications include signalling, crossing control, in-cabin radio and displays. Our products are designed to meet harsh requirements and undergo extensive environmental testing, safety approvals, design verification testing (DVT) and HALT testing. Our engineering teams are located worldwide to be close to our customers, they use only approved component suppliers and components that meet our conservative design guidelines, ensuring reliability is designed in from the ground up.

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The brochure features a quick reference information section, discussing the following:

  • Safety approvals
  • Emission and immunity specifications
  • Leakage currents and isolation
  • Separation requirements
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Here are some of the requirements that need to be considered when selecting a power supply supplier:

  • Compliance to harmonized standards: EN50121, EN50124, EN50125, EN50155 & EN50163 and national standards: RIA, NFA01-510. VDE, ST and others
  • Reliability by conservative component de-rating
  • Full Design Verification Testing (DVT)
  • Long product life cycle and End Of Life (EOL) management.
  • Dedicated project management
  • Wide input voltages for common DC battery input voltages used worldwide
  • EMC/EMI control and immunity to spikes, surges
  • Rugged build standard
  • Wide operating temperature range (typical -40°C to 70°C)
  • Convection or conduction-cooling
  • Parallel and redundant operation
  • Thermal, overvoltage, overcurrent protection
  • RoHS compliance
  • ISO9001 quality management system

Engineered Solutions



Mechanical & Electrical Design
  • 3D-model, photo-rendering, animation
  • Thermal, stress and mass simulation
  • Environmentally sealed units
  • Filter design for specific noise and ripple standards
  • I2C interface requirements for power supply health and control
  • Blind-mate, hot-swap experts
  • Embedded micro-processor based design
  • Schematic capture / simulation
  • Compliance with railway specifications (RIA, EN, NF, VDE etc.)



PCB Design & Software Programming
  • Timely electrical assemblies improving customer time-to-market
  • Safety specific creepage and clearance
  • Design for manufacturability
  • PCB modeling & layout
  • In-house software / firmware development
  • Serial bus interfaces - I2C & RS232 / 422
  • Software / firmware functionality
    • Smart battery interface (SMBus)
    • Battery charging
    • Power supply sequencing
    • Power supply alarm and control



Safety Compliance, Quality & Testing
  • Compliance engineering
  • Expert knowledge of UL, TUB, CSA, CE & CB schemes
  • Compliance to harmonized standards: -EN50155, EN50125 & EN50163
  • Compliance to legacy/national standards: - RIA, NF, VDE, ST and others
  • CE mark and international safety approvals
  • Risk analysis
  • 100% parametric DVT testing
  • In-system troubleshooting
  • System specific testing can also be provided
    • Turnkey EMC certification
    • HALT/HASS integrity testing
    • Burn-in