High Power Conversion Modules & DC Power Supplies
Pre-engineered, rigorous burn-in tested power conversion hardware configured for 230V/400V 50Hz networks and isolated DC bus distribution in southeastern Europe.
3000W High Power Lab Bench Variable AC DC Power Supply
- Range: 0-24V, 0-48V, 0-110V variable
- Constant Voltage & Current tracking
- Industrial testing, burn-in & R&D
T-30 30W Triple Output Switching Power Supply (5V/12V/-12V)
- Triple isolated auxiliary voltage rails
- Low-ripple instrumentation grade
- Test benches & PLC sensor power
EDR-120 120W Universal AC Input DIN Rail Power Supply
- 12V 10A / 24V 5A / 48V 2.5A models
- TS-35/7.5 or TS-35/15 mounting
- Full protection: OVP, OLP, SCP
240W DIN Rail SMPS with Active PFC (24V 10A / 48V 5A)
- Built-in Active PFC (PF > 0.98)
- EN 61000-3-2 harmonic compliant
- Precision PLC automation cabinets
LEYU LRS-150-24 150W 24V 6.5A Single Output SMPS
- 1U ultra-thin 30mm profile housing
- Withstand 300VAC surge for 5 sec
- CNC control & industrial display LED
LPV-60-24 Constant Voltage 60W 24V IP67 Waterproof Power Supply
- Fully potted IP67 ingress rating
- High humidity & coastal salt spray proof
- Marine deck, port lighting & signage
EDR-120 Heavy-Duty Industrial DIN Rail Switch-Mode PSU
- High efficiency up to 88.5%
- Electrolytic caps rated 105°C long-life
- Heavy machinery control cabinets
3000W 48V 60A High Power Adjustable DC Converter / Charger
- Output 48VDC nominal (adjustable to 60A)
- Intelligent dual ball-bearing cooling
- LiFePO4 / Lead-acid industrial storage
High Power Conversion Engineering for Croatian Infrastructure
Croatia’s accelerating shift toward renewable integration, combined with its historic prowess in maritime construction and railway electromechanics, demands power supplies engineered for extreme electrical resilience.
Grid Fluctuations & Harmonic Mitigations
Connecting high-power DC equipment to the Croatian grid (operated by HEP and HOPS) necessitates high Power Factor Correction. Our systems incorporate Active PFC (PF > 0.98) to suppress THD (Total Harmonic Distortion), preventing voltage sags in sensitive substations and industrial facilities.
Galvanic Isolation & EMC Immunity
In maritime switchboards and distributed PV farms across Dalmatia, inductive transients can devastate low-voltage control circuits. Our isolated DC-DC topologies deliver 3000VAC - 4000VAC I/O isolation with reinforced insulation barriers, preventing common-mode loops and EMI crosstalk.
Thermal Resilience & Harsh Saline Resistance
Croatia's coastal shipyards and offshore facilities experience severe salinity, humidity, and summer ambient temperatures surpassing 40°C. We apply automated conformal poly-coating (MIL-I-46058C compliant) and specify Japanese 105°C capacitors for extended MTBF.
Mission-Critical Applications Across Croatian Industries
Tailored power electronics deployment for industrial corridors in Continental Croatia and littoral marine centers.
Adriatic Maritime & Shipboard DC Microgrids
Shipbuilding and refitting hubs in Rijeka, Split, and Pula require rugged 24VDC and 48VDC auxiliary supplies. Our IP67-rated waterproof converters and high-capacity chargers drive bow thruster controls, navigational radar arrays, and electric passenger ferry auxiliary batteries across the Dalmatian islands.
Central Croatian Industrial Automation & PLC Systems
Manufacturing facilities in Zagreb, Karlovac, and Sisak leverage our TS-35 DIN rail units (EDR, NDR, and Active PFC series) to energize industrial PLCs, Siemens/Schneider I/O modules, sensor loops, and servo drives within electrical control cabinets exposed to heavy factory vibration.
Utility-Scale Solar PV & BESS in Slavonia & Dalmatia
Utility-scale solar farms in Slavonia and the Zadar hinterland utilize our adjustable DC converters to manage battery balancing, string-level monitoring, and remote RTU telemetry where wide DC input voltage ranges and over-temperature fault protections are vital.
Railway Traction, EV Charging & Substation Telemetry
Supporting railway signaling systems along corridor routes (HŽ Infrastruktura) and highway EV fast-charging banks along the A1/A3 motorways. High isolation, transient surge suppression, and stable DC bus distribution safeguard mission-critical communication protocols.
Croatia Power Supply Market: Strategic Trends & Compliance
Aligning procurement with the Republic of Croatia’s National Energy and Climate Plan (NECP) and EU Green Deal transition mandates.
Decarbonization of Port Infrastructure & Short-Sea Shipping
Under the EU Alternative Fuels Infrastructure Regulation (AFIR), Croatian maritime authorities at Port of Rijeka, Split, and Dubrovnik are mandating shore-to-ship cold ironing and electric vessel conversion. This requires Chinese suppliers capable of providing rugged high-power DC-DC converters for on-board battery racks and quayside DC fast-charging buffers.
Stricter CE, Ecodesign & RoHS Enforcement
Croatia strictly enforces European Union Harmonized Standards (Directive 2014/35/EU for LVD, Directive 2014/30/EU for EMC, and Directive 2011/65/EU RoHS). Industrial purchasers can no longer risk non-compliant gray-market power supplies lacking formal declarations of conformity, authenticated testing reports, or legitimate burn-in verifications.
Modernization of Power Distribution (HOPS / HEP)
With thousands of decentralized PV micro-inverters being plugged into the national grid, transient harmonics have become a key concern. Croatian engineering contractors prioritize power supply units featuring Active PFC stages that maintain high grid power factors and low electromagnetic interference emissions under variable loads.
| Series Model | Power Output | Input Range | Efficiency | Active PFC | Recommended Croatian Use Case |
|---|---|---|---|---|---|
| EDR-120-24 | 120W (24V @ 5A) | 90 ~ 264VAC | 88.5% | Standard Passive | Zagreb Control Panels Switchboards & machine tools |
| DRP-240-24 | 240W (24V @ 10A) | 90 ~ 264VAC | 91.0% | Yes (PF > 0.98) | Heavy Automation Substation RTUs & motor controllers |
| LRS-150-24 | 150W (24V @ 6.5A) | 85 ~ 264VAC | 89.0% | Standard | CNC / 3D Equipment Space-constrained automation chassis |
| LPV-60-24 | 60W (24V @ 2.5A) | 90 ~ 264VAC | 86.0% | IP67 Enclosure | Adriatic Marine Coastal LED lighting, deck signage |
| Keldan-3000W | 3000W (48V @ 60A) | 180 ~ 264VAC | 93.5% | Yes (PF > 0.99) | BESS & Traction Marine battery charging, telecom central |
Why Yueqing Keldan Technology Co., Ltd. Leads the Industry
Headquartered in Yueqing, Wenzhou—China’s premier low-voltage electrical capital—we bring 18+ years of dedicated switch-mode engineering to European B2B clients.
TÜV Rheinland Onsite Verified
Our production facilities, engineering capabilities, trading legitimacy, and QA laboratories have undergone rigorous on-site audit and certification by TÜV Rheinland, providing complete supply chain transparency.
Automated SMT & AOI Precision
Equipped with high-speed Yamaha and Panasonic surface-mount placement lines and automated optical inspection (AOI) to eliminate component misalignments, solder bridging, and cold-solder defects on complex power boards.
100% Full-Load Thermal Aging
Every single power unit undergoes our mandatory 4-hour, 100% full-load burn-in screening inside specialized thermal chambers before packaging. Early-stage transistor defects are caught at our factory, not at your customer site.
Custom OEM/ODM Engineering
In-house R&D engineers handle customer voltage re-specification (e.g., custom 28V, 72V, or 110V systems), IP-rated enclosures, conformal moisture-proofing, private branding, and dedicated terminal block configurations.
8-Stage Quality Assurance Verification Process
IQC Inbound Inspection
100% batch testing of incoming semiconductors, high-frequency transformers, and low-ESR capacitors.
Precision SMT Placement
Automated chip placement ensures absolute dimensional repeatability across high-density circuit boards.
Reflow Soldering
Multi-zone precision temperature profile controllers ensure void-free, ductile metallurgical joints.
AOI Optical Scanning
High-resolution automated optical scanners flag missing components, polarity flips, or microscopic bridges.
Through-Hole & Assembly
Heavy magnetics, heatsinks, and terminal connectors are hand-soldered by certified electrical technicians.
Electrical Calibration
Dynamic tuning of output voltage trim pots, current-limit thresholds, and active ripple suppression.
Full-Load Burn-In
Stress-testing power supplies under elevated thermal conditions at 100% capacity to guarantee field longevity.
OQC Pre-Shipment Audit
Final dielectric withstand (Hi-Pot) testing, chassis ground continuity, and export packaging audit.
Croatia B2B Procurement & Technical FAQ
Everything electrical engineers, project managers, and procurement officers need to know when importing power electronics from China into Croatia.
Are your power supplies fully certified for commercial import into Croatia?
Yes. All Keldan switching power supplies and DC-DC converters carry verifiable CE markings compliant with EU directives: Low Voltage Directive (LVD 2014/35/EU) and Electromagnetic Compatibility (EMC Directive 2014/30/EU), as well as RoHS compliance. Full Declarations of Conformity (DoC) and third-party laboratory test reports are provided for Croatian customs clearance.
What are the freight routes and transit times to Croatian ports?
For containerized orders (FCL/LCL), ocean freight ships directly from Ningbo or Shanghai port to the Port of Rijeka (Luka Rijeka), which serves as the premier maritime entry gateway into Croatia and Central Europe, with a typical transit time of 26-32 days. For urgent prototyping or project-critical components, express air shipments (DHL/FedEx) arrive at Zagreb Airport (Franjo Tuđman) within 4 to 7 working days.
How do you handle Croatian VAT (PDV) and customs import duties?
Goods entering Croatia from outside the EU are cleared via the Croatian Customs Administration (Carina). We provide complete commercial invoices, packing lists, and HS code declarations (typically HS 8504.40 for static converters). Croatian registered B2B entities can account for the standard 25% PDV (VAT) using their valid EORI and VAT number, often leveraging post-clearance deferral or reverse-charge mechanisms according to EU tax guidelines.
Can you provide custom output voltages for specialized European machinery?
Yes. Our engineering division routinely configures non-standard DC outputs (such as 36V, 48V, 72V, 110V DC) for railway signaling, telecommunication backup, and marine auxiliary busboards. We also offer custom potentiometer adjustments, conformal coating against coastal humidity, and custom front-panel terminal connections according to your project blueprints.
What is the standard warranty and RMA process for clients in Croatia?
We provide a standard 2 to 3-year factory warranty on all industrial-grade DIN rail power supplies and high-power DC converters. In the rare event of an operational failure, our technical support team in Yueqing coordinates rapid failure analysis via high-resolution photos and diagnostic reports. Verified warranty replacements are promptly dispatched with ongoing shipment consolidations or via air freight.
What are the minimum order quantities (MOQ) for Croatian distributors?
For standard catalog models (such as EDR-120, LRS-150, or DRP-240 series), sample orders are supported from 1 unit to facilitate engineer qualification and bench testing. Standard production batches start from 10 to 50 units. For fully customized OEM projects involving specialized housings or custom PCB artwork, project-specific MOQs apply upon technical review.
Accelerate Your Power Infrastructure Projects in Croatia
Whether you require standard TS-35 DIN rail units for a control cabinet in Zagreb or high-power 3000W DC converters for an Adriatic marine project, our engineers deliver tailored electrical designs, test reports, and factory-direct pricing.
