Are custom mechanical enclosure and mounting formats supported?

Yes, we support sub-rack 19-inch mounting, chassis mounting, cold-plate conduction cooling, DIN rail, and custom sub-assemblies with IP65 to IP68 ingress protection options.

EN 50155 & EN 45545-2 Certified Electronics

Power Solutions for Railway & Transportation

Q: Which railway standards do Premium PSU power solutions comply with?

Our railway power conversion platforms fully strictly adhere to EN 50155 (electronic equipment on rolling stock), EN 45545-2 (fire and smoke behavior), EN 61373 (shock and vibration proofing), EN 50121-3-2 (EMC), EN 50124-1 (insulation coordination), and RIA 12 surge withstand ratings.

Q: What communication protocols are supported for railway vehicle control systems?

We integrate standardized railway digital interfaces including TRDP (Train Real Time Data Protocol), CANopen / CANbus, Modbus, Profibus, and Ethernet/IP for seamless integration into TCMS (Train Control and Management Systems).

Ruggedized, high-efficiency energy conversion systems engineered for rolling stock auxiliaries, catenary feeds, signaling, and trackside rail infrastructure.

EN 50155 Rolling Stock Certification
EN 45545-2 Fire & Smoke Compliance
EN 61373 Shock & Vibration Proof
Proven Partner to Global Rail OEMs Since 1985

40+ Years of Railway Expertise

EN 50155 Compliant Power Conversion Systems for Mission-Critical Rolling Stock

Designing power electronics for rolling stock and trackside signaling requires extreme thermal endurance, electrical transient immunity, and structural integrity. Since 1985, Premium PSU has engineered and manufactured custom and standard power supplies in Barcelona, de-risking high-speed rail, tram, metro, and locomotive programs worldwide.

Railway power conversion system testing and assembly — Rolling Stock
Auxiliary Power

Our power conversion systems operate reliably under harsh mechanical vibration, catenary surge spikes, and temperature swings ranging from -50°C to +85°C. Each design incorporates robust galvanic isolation and continuous thermal margin verification.

Wide input ranges matching nominal 24V, 37.5V, 72V, 110V, 750V, and 1500V DC catenary lines
Ultra-compact sub-rack 19-inch, chassis-mount, and cold-plate conduction formats
Integrated TRDP, CANbus, Ethernet/IP, and Modbus communication protocols
Conformal coating & IP65 to IP68 environmental sealing options

Ruggedized rail power converters compliance — Certified
Normative Compliance

Quality and reliability are verified internally in our state-of-the-art testing facility. Every railway product family is fully qualified with comprehensive type test reports to accelerate your project approval.

EN 50155 / IEC 60571: Electronic equipment used on rolling stock
EN 45545-2: Fire and smoke safety behavior on railway vehicles
EN 61373: Category 1 Class B shock and vibration resistance
EN 50121-3-2 & EN 50124-1: Electromagnetic compatibility & insulation

Application Scope

Power Solutions for Rolling Stock & Trackside Infrastructure

Our power converters serve vital sub-systems onboard trains, trams, metros, and wayside station control centers across five continents.

On-Board Auxiliaries

Auxiliary & Emergency Power

Reliable power supplies feeding critical 24V/110V DC busbars, emergency lighting, brake control circuits, and low-battery vehicle start-up.

HVAC & Climate

Train HVAC Power Supplies

High-efficiency 3-phase DC/AC inverters powering passenger compartment cooling, heating, and ventilation compressors with low acoustic noise.

Signaling & Safety

ATP & ATO Signaling Systems

Ultra-isolated DC/DC converters ensuring continuous power to Automatic Train Protection (ATP) and Automatic Train Operation (ATO) sensors.

Motor Drives

Variable Frequency Drives (VFD)

AC/AC and DC/AC drives delivering variable voltage and frequency to induction motors in pumps, cooling fans, and door opening mechanisms.

Battery Systems

Substation & Vehicle Battery Chargers

Smart, multi-stage battery chargers featuring thermal compensation, battery health monitoring, and seamless back-up transitions.

Lighting & Control

Running Lights & TCMS Power

Rugged power converters powering external headlamps, interior LED displays, communication gateways, and Train Control Management Systems.

Passenger Comfort

Passenger Information & USB Power

Low-noise, highly reliable DC/DC power modules feeding seat power outlets, Wi-Fi routers, and infotainment screens.

Propulsion

Propulsion Control Power

High-voltage isolated converters delivering stable auxiliary lines directly from main catenary lines for vehicle startup sequences.

Innovation Highlight

Direct Catenary Line Power Conversion – Spark Series

Engineered to pull power directly from contact line networks without requiring intermediate battery stages, reducing total vehicle weight and lifecycle costs.

OVX-6400 3-Phase Catenary Inverter — OVX-6400
3-Phase Inverter

OVX-6400 6400VA 3-Phase Catenary DC/AC Inverter

A 3-phase sine wave inverter built to meet EN 50155 and EN 612587-1 standards. Designed to take power directly from line contact to energize auxiliary 3-phase train networks and HVAC systems.

6400 VA nominal output rating
Pure sine wave output with ultra-low total harmonic distortion (THD)
Direct catenary voltage connection capability
High efficiency under partial loading conditions

CVS-280 Railway DC/DC Converter — CVS-280
DC/DC Converter

CVS-280 Catenary-Fed DC/DC Converter

Compact railway converter specifically developed to feed directly from contact lines to enable vehicle startup, powering primary logic units and safety relays prior to main contactor closure.

Extremely wide input voltage window for catenary transients
Rugged compact footprint with high power density
High galvanic isolation between primary, secondary, and ground
Proven in high-speed rail and tram vehicle startups

Engineering Excellence

Why Global Rail Manufacturers Standardize on Premium PSU

Railway fleet projects demand decades of uninterrupted service life. Our engineering protocol explicitly defines electrical, thermal, and mechanical safety margins before physical prototyping begins.

Direct Line & Wide Input Handling: Tolerates severe catenary surges (RIA 12 3.5Vn 20ms) and voltage drops without operational shutdown.
Advanced Thermal Management: Conduction cooling (cold-plate), natural convection, or controlled forced air operating up to +85°C ambient temperature.
Digital Fleet Communication: Real-time status reporting via TRDP, CANopen, Ethernet/IP, and Modbus for predictive fleet maintenance.
Custom Mechanical Integration: 19-inch sub-racks, low-profile chassis, DIN rail, and IP68 enclosures tailored to your available mounting envelope.
Obsolescence Management & Support: Guaranteed component supply, form-fit-function redesigns, and repair support spanning 20+ year fleet lifecycles.

Railway power converter manufacturing and testing in Barcelona

Proven in the Field

Trusted by World-Leading Railway Manufacturers & Operators

Our railway power solutions operate onboard high-speed trains, trams, locomotives, and subways supplied by global OEM integrators.

Engineering Insights

Railway Technical Resources & Case Studies

In-depth technical white papers and engineering application notes detailing modern power conversion topologies in rolling stock.

Multilevel Inverters in Railway Traction

Application Note

Multilevel Inverters: NPC, FC, CHB & The Road to RDC-MLI

Architectural synthesis of neutral-point clamped and flying capacitor topologies for advanced rail traction and auxiliary systems.

Published April 2026

Case Study

Power Electronics Integration for Tram HVAC Systems

Engineering breakdown of custom DC/AC inverter integration delivering stable climate control in light rail vehicles.

Published September 2025

Field Case Study

Variable Frequency Drives TDS-3300 in Railway Applications

How modular 3-phase VFDs solved harsh motor acceleration and pump control challenges across major train fleets.

Published March 2024

Heavy Transit

Rugged Power Electronics for Heavy-Duty Electric Vehicles

Custom DC/DC converter design ensuring high power density and continuous operation in demanding heavy transport applications.

Published April 2025

Procurement & Engineering FAQ

Railway Power Conversion Questions

Which railway standards do Premium PSU power solutions comply with?

Our railway power conversion platforms strictly adhere to EN 50155 / IEC 60571 (electronic equipment on rolling stock), EN 45545-2 (fire & smoke safety behavior), EN 61373 (shock & vibration proofing), EN 50121-3-2 (EMC), EN 50124-1 (insulation coordination), and RIA 12 surge withstand specs. Detailed type test certificates are provided with every order.

Can your inverters powered directly from the catenary line start vehicles?

Yes. Our Spark Series platforms (such as the CVS-280 DC/DC converter and OVX-6400 3-phase inverter) are specially designed to accept high-voltage catenary inputs directly to power control electronics and initiate vehicle start-up without relying on intermediate battery buffers.

What communication protocols are supported for railway vehicle control systems?

We integrate standardized digital railway interfaces including TRDP (Train Real Time Data Protocol), CANopen / CANbus, Modbus, Profibus, and Ethernet/IP for seamless data telemetry into TCMS (Train Control & Management Systems).

Are custom mechanical enclosures and cooling formats available?

Yes, we support sub-rack 19-inch chassis formats, wall-mount enclosures, cold-plate conduction cooling plates, DIN rail, and custom sub-assemblies with ingress protection options ranging from IP20 up to IP68.

Need an EN 50155 Power Solution for Your Rail Project?

Send us your input voltage window, power rating, thermal parameters, and mounting requirements. Our railway engineering team will provide standard platforms or tailored development options within 48 hours.