Engineered OEM Isolated & Conversion Platforms
Explore our heavy-duty isolated power converters, wide-input buck-boost modules, and IP65/IP67 lithium battery charging systems engineered for robust industrial installations.
- Input / Output12V DC → 43.8V 13A
- Efficiency≥ 93.5%
- TopologyBuck-Boost CC/CV
- Isolation1500V Galvanic
- Output24V @ 5A (120W)
- ComplianceCE, RoHS, EN 62368
- Input Span18V – 90V DC Continuous
- IngressIP68 Polyurethane Potted
- ApplicationTraction & Telemetry
- Input36V / 48V / 60V / 72V
- Noise/Ripple< 50mVp-p Low EMI
- Thermal-40°C to +85°C Baseplate
- Output5V @ 20A (100W)
- ProtectionOVP, OCP, OTP, Short
- GroundingFully Independent Dual Rails
- Input10V – 60V DC
- Output12V / 24V / 28V / 48V
- ControlMODBUS-RTU / RS485
- Input90–265V AC Universal
- Output14.6V – 58.4V Configurable
- SealingCast Aluminum IP65
- Continuous12V @ 100A (1200W)
- CoolingIntegrated Fin Conduction
- ApplicationHeavy Transport & Logistics
Engineering Perspective: Why Galvanic Isolation Matters in High-Interference Grids
A rigorous review of high-potential barriers, common-mode noise suppression, and fault containment for system integrators operating across Ida-Virumaa.
Breaking Ground Loops & Ground Potential Rise (GPR)
In extensive manufacturing sites or maritime installations, long conductor paths between distant grounding electrodes create varying electrical potentials. Non-isolated converters bridge these circuits, allowing circulating stray currents that trigger signal jitter, false sensor triggers, or catastrophic PCB trace burnouts.
- Physical air/creepage barriers up to 6.3mm
- Complete separation of input chassis and output negative
- High Common Mode Transient Immunity (CMTI > 25kV/μs)
Dielectric Isolation & High-Voltage Transients
Traction battery arrays (such as 48V, 72V, or higher nominal banks) suffer from massive inductive flyback when contactors open or heavy hydraulic pumps cycle. Galvanic isolation with transformer coupling prevents primary high-voltage spikes from propagating directly to downstream sensitive 5V/12V microcontrollers and edge gateways.
- Standard dielectric withstand test: 1500V DC / 1 min
- High-frequency planar transformer magnetic isolation
- Protects sensitive CAN-bus, MODBUS, and sensor lines
Polarity Inversion & Floating Power Flexibility
Galvanically isolated converters deliver floating outputs, permitting engineers to establish positive grounds, negative grounds, or custom rail references (+12V, -12V dual rails). This capability is critical when bridging legacy telecommunication apparatus (-48V logic) with contemporary digital control gear.
- Floating rails re-referenced at will without short circuits
- Prevents electrochemical corrosion caused by stray return DC
- Enables easy series-stacking for non-standard voltage levels
Localized Applications: Solving Mission-Critical Power Demands in Narva & the Baltic Corridor
How our custom OEM isolated power converters operate in Estonia's leading industrial hub, addressing sub-zero temperature shifts, mining logistics, and renewable energy conversion.
Heavy Mining & Quarry Logistics
Operating in the oil shale extraction sectors of Ida-Virumaa requires equipment that withstands sustained mechanical vibration and heavy inductive load dumping. Our converters power cabin controls, IoT telemetry, and optical sensors on heavy excavators without line noise disruptions.
- Shock & vibration rated to IEC 60068-2-6
- Wide inputs accommodate alternator surges up to 90V
- Epoxy potting guards against mineral dust ingress
Narva-Jõesuu Marine & Port Craft
Harsh maritime air along the Narva River mouth and Gulf of Finland creates severe electrolytic galvanic corrosion risks. Our marine-grade isolated units decouple the vessel's hull from onboard navigation computers, sonar arrays, and high-energy radio transceivers.
- IP67/IP68 hermetically sealed aluminum chassis
- Breaks boat hull ground loops to suppress rust
- Stable 13.8V radio communications power
Baltic Renewable BESS & Cold Weather
Estonian winter ambient temperatures routinely drop beneath -25°C. Our custom OEM isolated units utilize automotive-spec low-ESR polymer capacitors that maintain high efficiency and zero boot failures during extreme freeze conditions without external pre-heaters.
- Guaranteed cold-start reliability at -40°C
- Synchronous rectification delivers 94%+ efficiency
- Auxiliary DC-DC supplies for high-voltage battery racks
Industrial Automation & Robotics
In modern automated manufacturing facilities, AGVs and robotic arms operate on 48V or 72V DC rails. Our step-down isolated converters step down high traction voltages to ultra-clean 5V, 12V, or 24V rails for PLCs, safety LIDARs, and industrial visual inspection cameras.
- Low radiated emissions conforming to EN 55032 Class B
- Compact footprint for DIN-rail or chassis mounting
- Integrated RS485 real-time monitoring available
Regional Industrial Trends: The Clean Energy & Automation Transition in Narva
Analyzing key structural transformations in northeastern Estonia's industrial framework and how high-reliability power conversion technology supports this shift.
Decarbonization of Heavy Baltic Manufacturing
Driven by the European Green Deal and regional modernization initiatives, Ida-Virumaa is transitioning from fossil-fuel-intensive production to clean tech, green hydrogen facilities, and specialized machinery manufacturing. This shift necessitates power supplies designed for energy conservation, minimal idle power consumption (<10mA), and multi-stage LiFePO4 battery integration.
Supply Chain Diversification & High-Spec Customization
Estonian engineering contractors increasingly favor OEM partners who offer high flexibility over off-the-shelf catalog limitations. Custom pinouts, ruggedized enclosures, conformal-coated boards, and customized CC/CV profiles allow local engineers to build bespoke equipment without costly mechanical re-engineering.
Stringent EMC Directives in High-Density Smart Hubs
As Narva modernizes its industrial parks into connected smart facilities, high-frequency electromagnetic noise from variable frequency drives (VFDs) and high-power inverters pollutes DC buses. High-isolation power converters serve as physical noise baffles, ensuring industrial telemetry remains uninterrupted and compliant with EU Class B EMC directives.
Engineering Decision Matrix: Isolated vs. Non-Isolated Converters
Select the correct architecture for your equipment based on safety, potential difference, efficiency, and budget parameters.
| Criteria / Parameter | Isolated DC-DC Converters | Non-Isolated Buck Converters | Buck-Boost Stabilizers |
|---|---|---|---|
| Galvanic Barrier | 1500V – 3000V DC (Optocoupler + Transformer) | None (Direct common ground return) | None (Standard shared ground rail) |
| Ground Loop Elimination | 100% Complete Isolation of Signal/Power | Susceptible to ground shifts and noise | Shared ground; susceptible to ground shifts |
| Typical Conversion Efficiency | 88% – 92% | 94% – 97% | 90% – 94% |
| Input Voltage Dynamic Range | Ultra-wide (2:1, 4:1, e.g., 18V–75V, 18V–90V) | Stepped down; Vin must exceed Vout | Flexible; Vin may swing above & below Vout |
| Short Circuit Fail Mode | Secondary protected; prevents Vin pass-through | MOSFET short can pass full Vin to load | Internal protection shuts down PWM switch |
| Best Suited Local Scenario | Marine vessels, AGVs, high-voltage battery tapping | Vehicle cabin 24V-to-12V steps, high-current fans | Solar PV load stabilization, alternator charging |
Direct-from-Factory Manufacturing Excellence
Founded in 2015, Shenzhen Eltrum Electronic Co., Ltd. operates an onsite-inspected, ISO 9001-certified production facility spanning up to 3,000 m². With a seasoned workforce of over 50 dedicated engineers and technicians, we specialize in high-reliability power supplies designed to eliminate field failure rates for global equipment manufacturers.
Isolated DC-DC power modules represent the technological bedrock of our firm. Every component, from high-frequency transformers to custom precision wound inductors, is developed, assembled, surface-mounted (SMT), encapsulated, and 100% full-load burn-in tested inside our own facility under strict CE and RoHS compliance.
- Low Evaluation Barrier: Standard prototype pilot runs from 5 units for qualification
- Full OEM/ODM Adaptability: Custom voltages, bespoke IP68 potted casings, and CAN/RS485
- Global Supply Verification: Proven deployments across 130+ countries including Germany, USA, and the Baltics
Procurement & Engineering FAQ for Narva Industrial Buyers
Clear, direct answers regarding customs, temperature performance, certifications, and OEM development schedules.
Q1: How do your isolated converters perform during sub-zero Estonian winters?
Our converters are engineered using industrial-grade semiconductors and solid polymer capacitors rated from -40°C to +85°C. Polyurethane potting prevents condensation and cold-temperature micro-fracturing on solder points during thermal cycling, ensuring reliable start-up during deep winter conditions.
Q2: Can your technical team customize conversion ratios not shown in your catalog?
Yes. Custom OEM engineering is our core strength. If your application calls for a non-standard conversion ratio (e.g., 80V nominal down to 15V or 28V at 30A), our R&D team can calibrate transformer turns, MOSFET ratings, and feedback control loops on established platforms within 2 to 3 weeks.
Q3: What documentation is provided for CE and RoHS conformity within the EU?
Every converter family is backed by accredited third-party test reports validating Electromagnetic Compatibility (EMC Directive 2014/30/EU), Low Voltage Directive (LVD 2014/35/EU), and RoHS material testing. Comprehensive technical datasheets and declaration of conformity certificates are supplied with sample batches.
Q4: How does galvanic isolation protect our connected PLCs and computers?
Galvanic isolation introduces an electromagnetic transformer barrier that breaks metallic continuity between the power source and the load. High-voltage transient spikes, alternator dumps, or inductive noise generated by large electric motors cannot cross this air/dielectric boundary, safeguarding microelectronics.
Q5: What are the lead times and shipping logistics for deliveries into Ida-Virumaa?
Standard engineering evaluation samples ship via express air courier (DHL, FedEx, UPS) directly to Narva or Tallinn in 5 to 8 working days. Production volume orders ship FOB or DAP depending on customer freight arrangements, complete with export customs paperwork and EUR1 compliant origin certificates.
Q6: What is the minimum order quantity (MOQ) for custom OEM orders?
To support system integrators and prototyping engineers, our standard evaluation MOQ is just 5 units. For custom enclosures, specialized connector harnesses, or custom laser engraving, volume MOQs typically begin at 50 to 100 units depending on mechanical tooling needs.
Build Your Custom Isolated Power Solution Today
Discuss your operational voltages, isolation specifications, and environmental requirements with our power electronics application team. We deliver custom design assessments, sample units, and scalable OEM production terms.
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