Direct factory supply of railway-grade isolated DC-DC converters, high-density onboard battery chargers, and IP67-rated power assemblies optimized for tropical rail transportation networks.
Addressing the electrical, environmental, and operational demands of Sri Lanka Railway (SLR) modernization programs.
Sri Lanka's railway infrastructure operates across mixed electrifications and variable power conditions. Our DC-DC power converters integrate high-surge voltage suppression circuits capable of handling transient spikes up to 3000V DC, securing delicate Train Control and Management Systems (TCMS).
The mainline routes along Colombo, Kalutara, and Galle run within meters of the Indian Ocean. Our railway transportation power modules utilize fully encapsulated potted enclosures with IP67 sealed housings, preventing dielectric breakdown from high humidity (up to 98%) and saline air corrosion.
Rolling stock operating on Sri Lanka's mountainous tracks (e.g., Colombo to Kandy and Badulla) experience extreme physical stress. Every power converter is designed to comply with EN 61373 Category 1 Class B standards for bogie-mounted and carbody equipment.
Comprehensive engineering matrix for Sri Lankan OEM locomotive builders, system integrators, and railway maintenance workshops.
| Converter Category | Input Voltage (VDC) | Output Voltage Options | Nominal Power | Efficiency | Isolation Rating | Cooling / Package |
|---|---|---|---|---|---|---|
| Isolated 1/16th Brick | 9 - 75V / 16 - 160V | 3.3V, 5V, 12V, 24V | 50W - 150W | up to 93% | 2250 VDC | Conduction / Open-Frame or Baseplate |
| Isolated Quarter Brick | 16 - 160V / 34 - 160V | 5V, 12V, 15V, 24V, 48V | 150W - 300W | up to 94.5% | 3000 VAC | Encapsulated / Aluminum Baseplate |
| Isolated Half Brick | 66 - 160V / 180 - 400V | 12V, 24V, 28V, 48V | 300W - 600W | up to 95.5% | 3000 VAC | Fully Potted / Sealed Cold Plate |
| Isolated Full Brick | 300 - 500V / 400 - 650V | 24V, 48V, 110V | 600W - 1000W+ | up to 96% | 3000 VAC | Encapsulated Heavy Duty Chassis |
| Vehicle Integrated OBC + DCDC | 100V - 750V Wide HV | 13.8V, 27.6V, 48V Aux | 3.3kW OBC + 1.8kW DCDC | up to 96.5% | 3500 VAC | IP67 Sealed / Air or Liquid Cooled |
Empowering diesel-electric locomotives, suburban DMUs, passenger coaches, and trackside signaling networks throughout the Western, Central, and Southern provinces.
Sri Lanka Railway's aging fleet of diesel-electric locomotives (Class M series) requires modernized auxiliary power supplies for starter batteries, cab HVAC control systems, and dynamic braking logic. Our high-input DC-DC modules step down battery voltages reliably without heavy iron-core transformers.
The intense passenger load on Colombo suburban routes (such as Ragama, Fort, and Panadura line DMUs) demands continuous power for automated doors, emergency lighting, route indicators, and CCTV surveillance. Our 3.3kW to 6.6kW power converters supply stable output even during steep battery voltage sags.
Signaling equipment along the Colombo-Matara coastal corridor faces severe humidity and line voltage fluctuations. NetPower trackside isolated DC-DC modules provide clean, galvanically isolated power to level crossing barrier controls, axle counters, and track relay circuits.
Evaluating the technology shifts towards high efficiency, battery hybrid trains, and intelligent power distribution.
Sri Lanka's Ministry of Transport initiatives prioritize decarbonization. Introducing battery-assisted suburban DMUs reduces fuel consumption on short-haul suburban loops around Colombo Fort. High-density bidirectional OBCs are pivotal for depot-based charging management.
Modern rolling stock engineering is abandoning centralized power supplies in favor of Distributed Power Architecture. By mounting localized quarter-brick and half-brick DC-DC modules directly at point-of-load, weight is reduced and power distribution losses are minimized.
Real-time telemetry of auxiliary power systems enables predictive maintenance for Sri Lanka Railways depot crews. Our integrated converters output real-time voltage, current, internal temperature, and fault status via standardized CAN protocols.
With ambient temperatures in Sri Lanka exceeding 35°C in dry zones (Anuradhapura, Jaffna), converters must maintain high output power without thermal derating. Baseplate-cooled designs transfer heat directly to the vehicle chassis.
Over two decades of power electronics leadership, supplying field-proven modules to world-class transit equipment builders.
We manufacture a complete line of board-mounted isolated DC-DC converters spanning micro-power modules, 1/32nd, 1/16th, 1/8th, quarter, half, and full-brick packages compliant with DOSA standards, enabling drop-in replacement and modular scaling.
Every railway production batch undergoes Highly Accelerated Life Testing (HALT), HASS screening, and 100% automated optical & electrical testing. Full component traceability is maintained across all manufacturing processes.
When off-the-shelf units don't meet space constraints of older locomotive engine rooms, our engineering team customizes pinouts, mechanical housings, thermal plates, and internal firmware for fast turn-around OEM projects.
Direct technical and procurement answers regarding supply chains, standards compliance, and installation.
Railway battery systems (typically 24V, 48V, 72V, or 110V nominal) experience severe voltage sags during engine cranking and over-voltage surges during braking. Our railway converters feature an ultra-wide input ratio (such as 16V-160V DC continuous), covering all standard EN 50155 input ranges in a single unit. This prevents converter shutdown during critical transient events.
Yes. All our encapsulated railway-grade power modules and onboard chargers are completely sealed in a high-thermal-conductivity silicone or polyurethane potting compound, rating them up to IP67/IP68. This prevents moisture ingress, fungus growth, and dielectric breakdown caused by Sri Lanka's 80%-98% ambient humidity and salt spray atmosphere.
Absolutely. We offer full semi-custom and full-custom engineering services. If Sri Lanka Railways (SLR) or local refurbishment contractors require specific mounting dimensions, connector types, or custom DC voltage outputs (e.g., non-standard cab electronics voltage), our engineers can deliver tailored power assemblies that match legacy physical dimensions while upgrading internal reliability.
Every shipment includes complete compliance documentation, including EN 50155 test reports, EN 45545-2 fire and smoke protection certificates, EN 61373 vibration/shock reports, ISO 9001 quality certificates, and full 100% factory test data sheets to assist in tender approval and verification.
Standard catalogue isolated bricks and evaluation samples are available in stock or built within 2–3 weeks. Custom production runs typically ship within 4 to 6 weeks via express air freight directly to Bandaranaike International Airport (CMB) or via sea freight to the Port of Colombo with full customs invoice support.
Seeking high-reliability isolated DC-DC converters or on-board power systems for Sri Lankan rolling stock, trackside signaling, or electric transit projects? Speak directly with our senior application engineers for custom quotes, technical datasheets, and sample evaluation.
