18–75V to 24V 5A Isolated Power Module
- Topology: Transformer Isolated
- Input Range: 18–36V / 36–75V DC
- Output: 24V @ 5A (120W)
- Dielectric Strength: 1500V DC Isolation
Industrial & Maritime Lineup
High-Performance Isolated & Specialized DC-DC Power Conversion Units
Engineered for mission-critical port logistics, maritime electronics, Black Sea commercial fleets, and localized solar microgrid infrastructure across Constanța.
36–75V to 24V Heavy Industrial Isolated Unit
- Topology: Synchronous Buck (Iso)
- Nominal Input: 48V / 60V DC Industrial
- Output: 24V DC Fixed Regulated
- Efficiency: Up to 93.5%
18–90V to 12V 10A Waterproof Isolated Converter
- Input Margin: Ultra-Wide 18–90V DC
- Output: 12V @ 10A Continuous
- Thermal Mgmt: Silicone Potted Enclosure
- Protection: OVP, OCP, SCP, OTP
48V to 12V 10A Telecom & Traction Isolated Unit
- Target Uses: Traction, Marine, Towers
- Input: 36–75V DC Floating
- Output: 12V DC Galvanic Null-Ground
- EMC Compliance: EN 55032 Class B
18–75V to 5V 20A Industrial Logic Isolated Supply
- Output: 5V @ 20A (100W Max)
- Ripple/Noise: < 50mVp-p Pure Rail
- Isolation Barrier: Input-Output Dual Opto
- Enclosure: Anodized Aluminum IP65
24V to 5V 20A Ground-Decoupled DC Converter
- Input Nominal: 24V Industrial (18-36V)
- Output Current: 20A Low-Impedance
- Protection Level: Total Galvanic Interruption
- Mounting: Chassis / Flat Heat Plate
Smart 36V LiFePO4 DC-DC Charger (12V to 43.8V 13A)
- Profile: Precision 3-Stage CC/CV
- Input Voltage: 12V Lead/Alternator Source
- Charge Target: 43.8V @ 13A Lithium
- Housing: Rugged Marine IP67 Potted
1500W Dynamic High-Power Converter with RS485
- Wide Input: 10–60V DC Automotive/Solar
- Output Config: 12V / 24V / 28V / 48V High Amp
- Telemetry: RS485 Digital Modbus Link
- Peak Power: 1500W Industrial Burst
Technical Whitepaper
Engineering Isolated DC-DC Conversion for Demanding Maritime & Logistics Hubs
A detailed operational perspective on galvanic loop isolation, parasitic interference mitigation, and power supply resilience in Romanian Black Sea installations.
Why Galvanic Isolation is Paramount in Constanța's Maritime Ecosystem
In high-salinity, high-humidity coastal zones such as the Port of Constanța—the largest seaport on the Black Sea—ground loops and differential earth potentials present severe risks to electrical control infrastructure. Unlike non-isolated buck or boost converters which share a continuous negative ground bus between primary input and secondary output, true transformer-isolated DC-DC converters eliminate conductive continuity. High-frequency optocouplers and magnetic planar transformers decouple the direct current return path, eliminating stray current corrosion, protecting microcontrollers from high-voltage inductive surges generated by port winches, and preventing common-mode noise from corrupting precision NMEA 0183/2000 marine sensor communications.
| Technical Characteristic | Standard Buck/Boost Regulator | Galvanically Isolated Converter (Eltrum Standard) |
|---|---|---|
| Grounding Architecture | Common Negative Return (Shared) | 1.5kV - 3.0kV True Decoupled Isolation Barrier |
| Stray Voltage Mitigation | High risk of circulating currents through chassis | Completely blocks hull-to-chassis corrosion currents |
| EMI / RFI Suppression | Requires external filters on noisy common lines | Integrated differential LC filtering + ferrite shielding |
| Input Transients / Surges | Spikes pass easily to the output stage | Magnetic core absorbs high-voltage transient spikes |
Furthermore, industrial battery backup systems in Dobrogea's large-scale wind energy farms and container terminal automatic guided vehicles (AGVs) often experience substantial input voltage fluctuation under sudden motor load dumps. An isolated system provides clean secondary power, safeguarding mission-critical navigation, process PLCs, and LiDAR navigation clusters.
Regional Integration
Localized Applications Across Constanța County & Port Terminals
Optimized for severe marine atmospheres, logistics automation, green energy integration, and heavy commercial transportation networks.
Port of Constanța Vessel Electrification
Tugboats, commercial barges navigating the Danube-Black Sea Canal, and port support craft utilize isolated DC-DC converters to step down 24V or 48V auxiliary batteries to ultra-stable 12V rails. Complete galvanic isolation protects bridge radars, ECDIS navigational instruments, and radio communications from alternating alternator ripples and galvanic sea-water electrolysis.
Container Terminal AGVs & Material Handling
Heavy electric forklifts, container straddle carriers, and autonomous yard vehicles operating across Constanța South Container Terminal rely on high-voltage battery banks (48V, 72V, to 96V). Our isolated modules step down power to run sensors, telematics, logic controllers, and pneumatic valve actuators without interference from heavy electric drive traction motors.
Dobrogea Wind & Solar Microgrids
The Dobrogea plateau is one of Eastern Europe's most concentrated renewable energy corridors. Off-grid environmental sensor packages, remote monitoring SCADA systems, and solar-coupled sub-stations require rugged DC-DC converters capable of handling substantial open-circuit voltage spikes from photovoltaic arrays during sudden solar flare irradiance.
Industrial Outlook
Emerging Trends Driving Power Electronics in Constanța
Understanding the technological and economic transformations shaping power module procurement in Southeastern Europe.
Decarbonization of Port Infrastructure
EU Green Deal initiatives and local port mandates are pushing harbor craft and yard logistics toward zero-emission battery electric drivetrains, drastically multiplying demand for isolated DC-DC power modules.
Anti-Corrosive Packaging Standards
Constanța’s humid sea breeze carrying high saline levels is accelerating hardware specifications from open-frame electronics toward IP67 and IP68 fully potted vacuum-sealed polyurethane enclosures.
Transition to LiFePO4 Energy Storage
Traditional lead-acid auxiliary banks are being systematically decommissioned across shipyards and logistics fleets in favor of lithium iron phosphate, necessitating programmable CC/CV isolated converters.
Digital Telemetry & RS485 Integration
Industrial procurement managers increasingly specify intelligent DC-DC modules with integrated RS485 Modbus telemetry for proactive monitoring of voltage, thermal output, and power draws.
Shenzhen Eltrum Quality
Engineered Reliability from Direct ISO 9001 Production Lines
As an onsite-verified manufacturer established in 2015, Shenzhen Eltrum Electronic Co., Ltd. supplies high-efficiency power supplies, isolated DC-DC converters, buck-boost voltage stabilizers, and waterproof LiFePO4 charging systems to OEM engineers and distributors across more than 130 countries.
Isolated DC-DC conversion is where our core engineering team built its foundational expertise. That deep technical proficiency drives every circuit topology we build—ensuring zero compromises on component quality, dielectric isolation barriers, and thermal endurance.
- Low Evaluation Barrier: Flexible sampling with sample orders starting from just 5 units for seamless field validation.
- Broad Engineering Customization: Comprehensive OEM/ODM services including custom input windows, specialized output voltages, custom connectors, and RS485 protocols.
- Certified Compliance: Strictly manufactured to CE, RoHS, and ISO 9001 standards with exhaustive pre-shipment 100% burn-in test protocols.
- Robust Environmental Sealing: High-grade potting compounds offering IP65 to IP68 water, oil, and salt-mist ingress protection.
Buyer Knowledge Base
Frequently Asked Questions by Romanian & European Engineers
Direct answers addressing technical standards, regional delivery logistics, and localized customization for Constanța operations.
What level of galvanic dielectric isolation do your modules maintain for maritime craft?
Our standard isolated DC-DC converter modules deliver a minimum dielectric withstand voltage of 1500V DC between input, output, and metal casing. For specialized marine radar, medical equipment, and high-voltage grid substations in Constanța, custom configurations with up to 3000V DC isolation barriers can be engineered upon request.
How does salt-fog and high humidity impact these converters in the Black Sea climate?
Standard electronic enclosures are vulnerable to moisture and coastal salt-mist degradation. Our isolated converters and LiFePO4 battery chargers utilize vacuum-injected thermally conductive polyurethane or silicone potting, yielding an IP67 or IP68 rating. This makes them impervious to airborne salt crystals, continuous condensation, shock, and vibrational fatigue common to harbor operations.
What are your minimum order quantities (MOQ) and sample validation lead times for Romania?
To assist design engineers and technical purchasing departments in verifying performance on prototype vessels or machinery, standard models have an MOQ of just 5 units. Evaluation samples typically dispatch within 3–5 working days via international air express directly to Constanța, Bucharest, or other regional logistics centers.
Can you match custom input voltages for railway and traction systems (e.g., 72V, 96V, or 110V)?
Yes. Through our comprehensive ODM and custom engineering services, we manufacture tailored topologies matching non-standard industrial input ranges, custom regulated outputs (such as 13.8V radio or 28V avionic rails), modified cable harnesses, and integrated RS485 communication protocols.
What certifications accompany products imported into the European Union?
All units are engineered and produced to full CE (EMC/LVD) and RoHS compliance in our ISO 9001-certified factory. Complete declaration of conformity documents and detailed laboratory test reports are provided to ensure smooth customs clearance and regulatory validation within the EU single market.
What payment and international trade terms do you accommodate?
We provide flexible international transaction options including T/T telegraphic transfers, PayPal, and Escrow in USD or EUR. Shipments can be arranged under FOB, EXW, or DDP terms depending on your enterprise's freight and clearing preferences.
Accelerate Your Project with Industrial-Grade DC-DC Power
Whether you require standard 12V/24V isolated modules for commercial vessels, wide-input buck-boost regulators for renewable farms, or a specialized OEM power design, our application engineering team is ready to assist.