Full-range custom design from board-level high-frequency flyback topologies to IP67-rated enclosed metal frame units. 100% compliant with Austrian and European electrical grid standards (230V / 50Hz, EN 62368-1, EN 61558, CE, ÖVE).
Full-Load Burn-In Tested
Hi-Pot Dielectric Isolation
In-House Inspection Stations
EuP Eco-Design Standby Loss
Graz, the capital of Styria (Steiermark), stands at the epicenter of Central Europe's high-tech manufacturing, clean energy transformation, and automotive innovation. Known globally as a powerhouse for automotive engineering—anchored by clusters such as ACstyria, premier mobility engineering firms, and the semiconductor corridor stretching along Silicon Alps—Graz-based Original Equipment Manufacturers (OEMs) demand power conversion hardware that functions well beyond commodity commercial standards.
Power supplies serving this regional market encounter demanding operational requirements. Austrian machine-building (Maschinenbau) and embedded robotics architectures expect minimal thermal rise within sealed IP65/IP67 enclosures, wide-temperature operational resilience (-20°C to +70°C), superior electromagnetic compatibility (EN 55032 Class B emission limits), and certified dielectric insulation under rigorous European safety directives.
As an Intertek-verified original manufacturer, Shaanxi Zelqo Power Co., Ltd. bridges precision custom engineering and scalable production economics. We supply equipment builders, sensor manufacturers, EV subsystem developers, and automation integrators throughout Graz, Graz-Umgebung, and the wider Styrian trade territory with custom-wound magnetic topologies, high-efficiency switching converters, and ruggedized power adapters manufactured strictly to European electrical norms.
Precision power conversion modules mapped to specific operational conditions in Graz.
Supporting Graz’s vibrant automotive cluster with low-noise 24V/48V DC power supplies for ECU simulation racks, sensor calibration benches, and auxiliary charging systems. Featuring active power factor correction (PFC > 0.98) and ultra-low conducted electromagnetic interference.
Ruggedized DIN-rail and chassis mount SMPS units driving PLCs, fieldbus I/O modules, and servo drive actuators. Designed to withstand electrical fast transients (EFT 2kV) and surge impulses in compliance with EN 61000-4-5, preventing unplanned production downtime.
Custom AC-DC adapters engineered for Graz’s university research institutes and MedTech innovators. Featuring reinforced 2x MOPP (Means of Patient Protection) isolation barriers, low leakage currents (< 100μA), and IEC 60601-1 Class II design architecture.
High-efficiency LED drivers and outdoor IoT auxiliary power converters tailored for municipal environmental monitoring stations and intelligent street illumination. Potted with thermal conductive resin for IP67 environmental isolation against Austrian alpine moisture.
Austrian procurement engineers in Styria operate under strict European Union regulatory frameworks. Sourcing power supplies without rigorous documentation risks customs detention, CE revocation, or catastrophic field failures. Our manufacturing process incorporates strict design controls addressing four pivotal European compliance dimensions:
1. Energy Efficiency & Ecodesign Directive (EU) 2019/1782: Power adapters must achieve Ecodesign Class VI benchmark thresholds. Zelqo Power implements synchronous rectification switching ICs and high-permeability manganese-zinc (Mn-Zn) ferrite cores, reducing no-load standby loss to less than 0.075W and achieving active efficiency curves exceeding 89% across variable loads.
2. Electromagnetic Compatibility (EMC Directive 2014/30/EU): Industrial environments in Graz frequently present dense electromagnetic fields. Our engineers design two-stage common-mode chokes, X/Y safety capacitors, and internal copper shielding foils directly into the PCB layout. All configurations undergo pre-compliance bench testing to satisfy EN 55032 (CISPR 32) Class B limits for conducted and radiated emissions.
3. Low Voltage Directive (LVD 2014/35/EU) & EN 62368-1: To ensure electrical operator protection, our primary-to-secondary insulation features creepage and clearance distances exceeding 6.4mm, utilizing triple-insulated winding wire (TIW) and Class F/H insulation systems. Units undergo mandatory 3,750V AC dielectric strength hi-pot verification before packing.
| Topology Architecture | Power Range | Typical Efficiency | Primary Application in Graz | Compliance Standards |
|---|---|---|---|---|
| Quasi-Resonant Flyback (QR) | 10W – 75W | 87% – 90% | IoT Gateways, Routers, Battery Chargers | EN 62368-1 / CE / ERP VI |
| Active Clamp Flyback (ACF) | 65W – 150W | 91% – 93% | Medical Monitors, Precision Instrumentation | EN 60601-1 / EN 55032 Class B |
| LLC Resonant Half-Bridge + PFC | 150W – 600W | 93% – 95% | Automotive Test Benches, Industrial Automation | EN 61000-3-2 / LVD / CE |
| Phase-Shift Full-Bridge (PSFB) | 600W – 2500W | 94% – 96% | Heavy Machinery, CNC Controllers, EV Chargers | EN 61558 / EN 50178 / UL Recognized |
Precision coil winding, cleanroom automation, and multi-stage electrical quality control.
Our manufacturing headquarters and operational facilities are independently audited and certified by Intertek. Buyers in Graz benefit from verifiable supply chain credibility, auditable production systems, and total transparency.
Unlike assembly-only vendors, we custom-wind our own toroidal, high-frequency, and low-frequency EI transformer cores. We optimize bobbin configurations, wire gauge, and magnetic flux density for custom target enclosures.
Every production lot passes 25+ discrete test stations: LCR bridge testing, DC low resistance, impulse winding tests, high-voltage hi-pot dielectric tests, and 100% full-load burn-in aging under elevated temperatures.
Offering complete trade logistics directly to Graz freight terminals or OEM factory doors via air express or multimodal rail (China-Europe Railway Express directly into Austrian logistics hubs), complete with EUR.1 / CE paperwork.
From schematic specification to batch mass delivery into Graz distribution points.
Review of input/output curves, mechanical dimensions, creepage boundaries, and European thermal limits.
Calculation of ferrite core geometry, wire gauge, turns ratio, and thermal dissipation path modeling.
Rapid dispatch of functional bench samples accompanied by full LCR, impedance, and hi-pot test reports.
Pre-production batch run to freeze tooling parameters, component Bill of Materials (BOM), and assembly jigs.
Automated production with multi-stage QC, shock-proof palletized packaging, and DDP shipping into Graz.
Clear, direct answers regarding minimum orders, European certifications, tooling, and lead times.
Custom prototype samples are typically wound, assembled, tested, and dispatched via express air courier within 7 to 10 business days. Following engineering approval and in-circuit validation, standard mass-production orders are completed in 3 to 4 weeks, with expedited schedules available for urgent manufacturing ramp-ups.
Yes. Austria’s national grid operates at a nominal 230V AC ±10% at 50 Hz. Our wide-input power supplies feature a universal operational window of 90V to 264V AC, allowing uninterrupted stability despite transient under-voltage brownouts, industrial harmonic distortion, or peak inductive load switching on regional factory circuits.
We provide deep-level architectural customization: primary/secondary winding taps, custom ferrite core geometries (EE, PQ, RM, Toroidal), PCB footprint tailoring, output voltage/current tuning, custom DC barrel jacks or industrial terminal blocks, bespoke cable lengths with ferrite bead suppression, and branded silk-screened laser-engraved housings.
All raw materials—including copper magnet wire, solder alloys, potting resins, silicon steel laminations, and plastic bobbins—undergo incoming chemical compliance verification. We maintain updated third-party laboratory test reports (SGS/TUV) confirming zero restricted phthalates, heavy metals, or SVHC substances under EU RoHS 2011/65/EU and REACH.
We maintain flexible procurement structures to support high-value R&D and pilot series in Graz. Initial engineering prototypes have no MOQ threshold. For commercial customized production runs, our MOQ begins at 500 to 1,000 units depending on the size of the transformer core or tooling requirements, supporting both niche OEM machinery and high-volume runs.
Yes. For equipment exposed to continuous mechanical vibration, shock, or sub-zero Austrian winter conditions, we offer vacuum epoxy or silicone encapsulation. Potted power modules provide enhanced heat transfer, IP67 dust/moisture exclusion, and dielectric integrity matching stringent transport and heavy industrial standards.