LDV Series · IP67 Sub-Zero Seal
18+
Years In Power Engineering
TÜV
Rheinland Onsite Verified
-40°C
Cold Boot Capability
100%
Full Load Aging Screening
Featured Industrial Power & Conversion Modules
Engineered for extreme electromagnetic stability, high galvanic isolation, and Nordic environmental resilience. Fully compliant with European CE, Low Voltage Directive (LVD), and RoHS frameworks.
LDV Series · High Current Precision
LDV-100 100W IP67 Waterproof LED Driver Power Supply 12V 8.3A 24V 4.2A AC to DC Adapter for Outdoor LED Strip Sign Lighting
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Architectural Series · Constant Voltage
100W IP67 Waterproof LED Driver 12V 24V Constant Voltage Power Supply for Outdoor Billboards Signage & LED Strip Lights
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LDV Series · Infrastructure Lighting
LDV-100 100W IP67 Waterproof LED Power Supply 12V 8.3A 24V 4.2A AC DC Switching Adapter for Outdoor Lighting
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HDR Stepped · Cabinet Optimization
HDR-100 100W DIN Rail Power Supply 85-264VAC Universal Input 12V 24V 48V Industrial Switching Power Supply
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EDR Standard · Industrial Cabinet Power
EDR-120 120W Industrial DIN Rail Power Supply 12V 10A 24V 5A 48V 2.5A AC DC Switching Power Supply for PLC Control Cabinet
Product DetailsLocalized Applications for Swedish Industry
Sweden's engineering standards (SEK Svensk Elstandard, SS-EN norms) demand unparalleled galvanic reliability, wide input voltage dynamics, and operational endurance in Arctic environments down to -40°C. Here is how our OEM/ODM architectures directly serve Swedish system integrators.
Substation & Smart Grid Telemetry
Swedish transmission networks governed by Svenska kraftnät protocols require ultra-low noise DC-DC converters for remote terminal units (RTUs), SCADA nodes, and digital switchgear. Our custom converters offer 3000Vrms to 4200Vrms input-to-output isolation, surge rejection conforming to SS-EN 61000-4-5 Class 4, and wide 4:1 / 8:1 ultra-wide DC input windows (18–72VDC, 40–160VDC) to stabilize bus voltage fluctuations during grid-switching operations.
Heavy Mobile Machinery & EV Forestry
Electrification of heavy vehicles in Sweden's mining (Kiruna, Malmberget) and forestry sectors (Komatsu Forest, Ponsse ecosystems) demands isolated step-down conversion from 400V/800V traction battery arrays down to 24VDC control circuits. Our liquid-cooled or conduction-cooled potted DC-DC units endure severe vibration (IEC 60068-2-6 up to 10G) and thermal shocks during winter harvest operations without derating.
Arctic Marine & Offshore Wind Systems
Coastal installations across the Baltic Sea and offshore wind arrays off Gotland operate under high salinity and moisture levels. Our conformal-coated and fully encapsulated DC-DC power converters feature MIL-STD-810G humidity compliance, anti-salt-spray passivation, and conformal dipping to prevent dendrite growth, ensuring non-stop operation for offshore navigation aids, de-icing telemetry, and hydraulic valve drivers.
| Application Domain | Topology / Form Factor | Input Voltage Ranges | Output Voltage / Current | Swedish / EU Regulatory Target |
|---|---|---|---|---|
| Grid Substation SCADA | TS-35 DIN Rail / Enclosed Potted | 18–75VDC / 40–160VDC | 12V, 24V, 48V (Up to 480W) | SS-EN 62368-1, EN 50155, EN 61000-6-5 |
| Electric Forestry / Mining | Chassis Heat-sink Potted / IP67 | 200–900VDC Traction Bus | 24V @ 50A–120A (1.2kW–3kW) | ECE R10, ISO 16750-2, SS-ISO 13766 |
| Cellular Telemetry (5G Poles) | Open Frame / Micro Brick | 36–75VDC Telecom Bus | 3.3V, 5V, 12V (Point of Load) | ETSI EN 300 132-2, EN 55032 Class B |
| Harsh Outdoor Lighting & Sign | LDV IP67 Aluminum Extrusion | 85–264VAC / 120–370VDC | 12V 8.3A / 24V 4.2A (100W) | EN 61347-1, EN 55015, IP67 Waterproof |
Swedish Power Conversion Trends (2025–2030)
The Swedish energy landscape is shifting rapidly under the "Fossilfritt Sverige" (Fossil-Free Sweden) initiative. OEMs and machine builders are replacing legacy linear architectures with high-bandgap semiconductor converters that deliver radical improvements in efficiency and space utilization.
Wide Bandgap (GaN/SiC)
Swedish procurement teams increasingly require Silicon Carbide (SiC) and Gallium Nitride (GaN) switching bridges to achieve >95.5% conversion efficiencies. This drastically minimizes wasted thermal wattage inside hermetically sealed control cabinets subjected to external climate swings.
-40°C Cold-Start Guarantees
Northern Swedish municipal infrastructure (Norrland region) rejects power supplies that cannot execute repeated hard cold boots at -40°C. Standard commercial electrolytic capacitors crack or lose ESR stability; our designs use solid polymer capacitors and pre-regulated heater coils for instant full-load strike.
Circular Carbon Neutrality
Swedish procurement frameworks evaluate lifecycle CO2 emissions (EPD - Environmental Product Declarations). By optimizing component density, maximizing recyclable aluminum content, and utilizing lead-free reflow compliant with RoHS III, we support Swedish CSRD compliance benchmarks.
Telemetry & PMBus Diagnostics
Modern Swedish automated factories (Industry 4.0 installations in Gothenburg, Västerås, and Malmö) require DC-DC converters equipped with I2C, PMBus, or CAN-bus reporting to predict ripple degeneration, log total operating hours, and stream operating temperatures to PLC edge controllers.
Why Nordic Engineers Partner with Yueqing Keldan Technology
Over 18 years of technical mastery, audited on-site by TÜV Rheinland in Yueqing, Wenzhou. We combine factory-direct manufacturing agility with deep European regulatory compliance.
TÜV Rheinland Onsite-Verified Facility
Our Yueqing manufacturing lines, quality control apparatus, and engineering laboratories undergo direct onsite verification by TÜV Rheinland. We do not intermediate; you work straight with the engineers overseeing SMT surface mounting, reflow profiling, AOI optical screening, and full-load burn-in testing.
Full OEM/ODM Topology Tailoring
Need custom mechanical profiles to fit DIN TS35 rails, proprietary pinouts, extended potting against sub-arctic frost, or wide DC inputs from 18V up to 800V? Our in-house R&D engineering group (5+ certified veterans with SMPS track records) provides PCB layouts, Gerber validation, and rapid 3D prototyping within 10 to 14 days.
100% Full-Load Burn-In & Traceability
Every single power unit is subjected to rigorous high-temperature full-load aging tests on our dedicated computerized burn-in racks. Zero cold-solder or infant-mortality components leave our factory floor, ensuring your Swedish field installations maintain uncompromised MTBF figures exceeding 300,000 hours.
Swedish Buyers' Frequently Asked Questions
Direct answers to the common technical and supply-chain inquiries submitted by Swedish procurement managers, electrical cabinet builders, and engineering teams.
Are your DC-DC converters and switching power supplies fully CE and RoHS certified for the Swedish market?
Yes. All standard power units and custom OEM runs carry comprehensive CE declarations complying with the EU Low Voltage Directive (LVD 2014/35/EU), Electromagnetic Compatibility Directive (EMC 2014/30/EU), and RoHS 2011/65/EU (including (EU) 2015/863). Full EMC laboratory test reports (EN 55032 Class B, EN 61000-4 series) can be supplied immediately for technical validation by your compliance teams.
How do your converters perform under Scandinavian extreme winter temperatures (-30°C to -40°C)?
For Swedish and sub-arctic deployments, we design custom input switching stages utilizing low-ESR solid polymer capacitors or specialized -40°C rated Japanese electrolytics (such as Nichicon or Rubycon). Critical circuits can be vacuum-encapsulated with thermal-conductive polyurethane or silicone resins, eliminating cold-boot micro-arcing, internal condensation during rapid freeze-thaw cycles, and vibration damage.
What is the minimum order quantity (MOQ) and lead time for Swedish OEM/ODM projects?
Standard catalog units (such as DIN rail HDR, EDR, and LRS modules) can be sampled with an MOQ as low as 1 piece for engineering evaluation. For custom OEM/ODM projects requiring tailored PCB design, custom metal enclosures, or unique terminal pinouts, production batch MOQs typically start from 50 to 100 units. Prototype verification samples are delivered within 10–14 business days, while volume sea/air shipments to Swedish hubs (Gothenburg, Stockholm) are dispatched within 20–25 days.
Can your DC-DC converters handle large voltage spikes from Swedish rail and mining transport lines?
Yes. For railway and heavy electric fleet applications, our designs incorporate multi-stage surge arrestors, TVS diodes, and ultra-wide input controllers capable of absorbing spikes defined by EN 50155 / RIA 12 (up to 3.5 times nominal input for 20ms). Galvanic isolation barrier integrity is validated up to 3000VAC / 4200VDC to prevent stray chassis currents from damaging sensitive microcontrollers.
How does Keldan manage freight logistics, customs clearance, and DDP shipping to Sweden?
Our 12-person international trade department works with major freight lines (including Maersk, MSC, and DHL Express) offering FOB Ningbo/Shanghai, CIF Gothenburg, or complete DDP (Delivered Duty Paid) door-to-door delivery throughout Sweden. All export documentation, HS code categorization, and commercial declarations are handled accurately to guarantee seamless processing through Tullverket (Swedish Customs).
Ready to Engineer Your Custom Power Conversion System?
Connect directly with our senior power supply engineers today. Receive rapid technical consultation, custom schematic reviews, and sample units for your Swedish project within 24 hours.
