Xi'an, Shaanxi, China · OEM / ODM Transformer & Power Supply Manufacturer [email protected]  |  ✔ Intertek-Verified Supplier

AC Power Transformer Factory & Exporters for the Slovakia Market

Precision-engineered magnetic solutions, industrial DIN-rail power supplies, and CE-compliant power conversion equipment tailored for Slovakian automation, automotive manufacturing, and renewable power infrastructure.

B2B Core Product Line

Export-Grade Industrial Transformers & SMPS Units

Certified, tested, and optimized for integration into European 230V/400V 50Hz single and three-phase industrial control environments.

Adjustable DIN Rail Power Supply Single-phase 60W-1000W
DIN Rail TS-35 60W - 1000W

Adjustable Power Supply Single-phase Rail Power Supply Din Rail

High-efficiency regulated power conversion module featuring wide-range AC input, active PFC, and precise voltage potentiometer tuning for Slovak machine cabinets.

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Fullstar Custom EMC LVD CE 220V 110V AC DC Switching Power Supply 24V 100W
CE / EMC / LVD 24V 5A 100W

Fullstar Custom EMC LVD CE AC DC Switching Power Supply SMPS 24V 100W

Engineered to mitigate conducted electromagnetic interference. Optimized for embedded sensors, automation nodes, and relay logic modules.

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Switching Power Supply Enclosure 5W to 1500W
Perforated Chassis 5W - 1500W

Switching Power Supply Enclosure 5W to 1500W Multi-Range

Heavy-duty perforated aluminum enclosure delivering optimal passive thermal convection, built-in transient suppressors, and adjustable current limits.

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12V 2000mA Power Adapter 24W
Europlug / CEE 7/16 24W Universal

12V 2000mA Power Adapter 24W Multi-Voltage Adaptor

Double-insulated wall-mount external AC-DC transformer module with Class II isolation, ultra-low standby power dissipation, and comprehensive overcurrent safety trip.

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DC Industrial DIN Rail Power Supply
Industrial Standard Galvanic Isolation

DC Industrial DIN Rail Power Supply Heavy Duty System

Robust galvanically isolated rail supply engineered specifically for demanding automotive assembly workshops and vibration-prone manufacturing enclosures.

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Universal Multi Voltage DC Switching Power Adapter
Multi-Tapped 5V - 19V Multi-Output

Universal Multi-Voltage DC Switching Power Adapter 500mA-3A

Broadband step-down power conversion module tailored for telecom peripherals, testing laboratories, instrumentation benches, and prototype equipment.

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12V 50A 600W Adjustable DC Power Supply CE
CE Regulated 12V 50A 600W

12V 50A 600W Adjustable DC Power Supply AC 110V/220V

High-capacity current delivery module with intelligent cooling fan control, zero-flicker current stabilization, and dedicated terminal lugs for architectural lighting and neon signage.

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AC to DC Switching Power Supply 24V to 200V
High Voltage Rail Up to 200VDC

Switching Power Supply 24V 36V 48V 60V 72V 100V 200V DC Series

Industrial DC bus conversion chassis with reinforced dielectric isolation, low magnetic fringing field, and high reliability across 24V to 200VDC output ranges.

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4.8 / 5.0
Verified Buyer Rating
100%
Hi-Pot & Aging Tested
IEC / EN
61558 & 62368 Compliant
Intertek
On-Site Audited Facility
Market Specifics

Tailored Engineering for Slovakian Industrial Ecosystems

Strategic alignment with Slovakia’s advanced manufacturing hubs across Bratislava, Trnava, Žilina, Nitra, and Košice.

Automotive OEM & Tier-1 Suppliers

Slovakia leads the world in per-capita automobile manufacturing (Volkswagen, Stellantis, Kia, Jaguar Land Rover, and Volvo). Automated welding lines, robotic arms, and paint shop PLC cabinets require continuous-duty DIN rail power transformers with severe transient immunity (EN 61000-4-5) and low harmonic distortion to avoid micro-interruptions.

Renewable Energy & Battery Storage

Driven by the EU Green Deal and Slovakia's National Energy and Climate Plan (NECP), solar PV farms in the Danubian Lowlands and expanding battery storage systems demand auxiliary high-frequency ferrite core and isolation transformers capable of operating under high ambient thermal stress and high-frequency PWM switching harmonics.

Factory Automation & Smart Warehousing

The rise of automated logistics hubs around Senec and Western Slovakia has accelerated adoption of intelligent conveyor sorters and AGVs. Our toroidal step-down and enclosed SMPS units deliver smooth DC bus voltages, minimal mechanical vibration hum, and compact form factors suitable for restricted control enclosures.

Engineering Whitepaper

Rigorous Slovakian & EU Compliance Standards

Exporting AC power transformers and switching converters to the Slovak Republic requires complete adherence to European Harmonized Standards. Every unit manufactured at our Xi'an facility undergoes documented quality validation to ensure seamless CE marking and customs clearance.

  • STN EN 61558-1 / 61558-2-4: Safety of power transformers, power supplies, and reactors. Creepage distances exceed 8.0 mm for reinforced isolation.
  • EMC Directive 2014/30/EU: Compliant with EN 55032 Class B for emissions and EN 61000-6-2 for industrial disturbance immunity.
  • Low Voltage Directive (LVD) 2014/35/EU: Dielectric withstand tested at 3,750 VAC primary-to-secondary for 60 seconds minimum.
  • RoHS 2011/65/EU & REACH: Strict metallurgical verification of non-hazardous lead-free solder and flame-retardant UL94V-0 bobbins.
Inspection Station Test Parameters Slovakia Grid Spec
Primary Grid Compatibility Nominal Voltage & Frequency 230 VAC Single-phase / 400 VAC 3-phase (50 Hz)
Hi-Pot Dielectric Test Primary to Secondary Breakdown 3.75 kVAC / 50Hz, Leakage < 5mA
Insulation Resistance Megohmmeter @ 500VDC ≥ 100 MΩ under ambient conditions
Thermal Rise Verification Full-load temperature delta Class B (130°C) / Class F (155°C) winding limits
Dynamic Load & Aging Burn-in chamber @ 40°C 100% full-load aging (4 to 8 hours duration)
Shaanxi Zelqo Power Advantage

Why Slovakian Importers & OEMs Rely on Our Factory

Combining vertically integrated Chinese winding manufacturing with Western quality management and export logistics expertise.

Custom OEM/ODM Coil Engineering

We do not repackage off-the-shelf standard items. Our electrical engineers calculate core geometry, wire gauge, turns ratio, and magnetic core saturation points directly from your schematics, target envelope dimensions, and operating duty cycle.

Intertek On-Site Verified Production

Operational facilities in Xi'an are independently inspected and verified by Intertek. Buyers in Bratislava or Košice receive authenticated factory audit reports, material test sheets, and batch traceability certificates before shipment.

Streamlined Rail & Air Logistics to Slovakia

Direct connectivity via China-Europe Railway Express (Xi'an to Dunajská Streda / Bratislava terminals) reduces bulk shipping transit times to 16-20 days, lowering warehousing costs and expediting time-to-market for project rollouts.

Ready to Build Custom Power Magnetics for Your Slovak Project?

Submit your electrical parameters, BOM specifications, or target drawings. Our bilingual engineering specialists will deliver a comprehensive DFM review, thermal calculation, and factory quotation within 24 hours.

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Frequently Asked Questions

Slovakia Buyer Procurement Guide

Clear, direct answers regarding customs, certification, lead times, and engineering parameters.

What specific input voltage standards do you configure for the Slovak electrical grid?
The standard low-voltage distribution in Slovakia operates under CENELEC harmonized specifications: single-phase 230 V (±10%) at 50 Hz, and three-phase 400 V line-to-line at 50 Hz. All our AC power transformers and switching power supplies are engineered to comfortably handle 207 V – 253 V line fluctuations without saturation or thermal degradation, while switching units typically offer universal input ranges of 85–264 VAC.
How do you handle CE conformity, LVD, and EMC testing for Slovak customs clearance?
Every export consignment destined for the European Union is backed by an official Declaration of Conformity (DoC). Test reports conforming to EN 61558-1/2 (for magnetic transformers) and EN 62368-1 / EN 55032 (for switching power supplies) are prepared and archived. Full documentation including RoHS and REACH compliance statements is provided alongside the commercial invoice and packing list.
What is the standard production and shipping lead time from Xi'an to Bratislava?
Prototype coil samples typically require 5 to 7 working days. Mass production lead times generally range from 18 to 25 calendar days depending on batch scale. For logistics, air freight to Vienna International Airport (VIE) or Bratislava Airport (BTS) takes 4 to 6 days. Regular container cargo via the China-Europe Railway Express (Chang'an line) directly reaches Slovak consolidation hubs in approximately 18 to 22 days.
What parameters are needed to request an ODM/OEM engineering quote?
To provide an accurate design assessment and quotation, please share: (1) Primary AC input voltage and frequency; (2) Secondary output voltages, rated current, and overload peak margins; (3) Operating frequency for switching transformers; (4) Physical dimensional constraints and mounting topology (chassis, PCB pinout, or DIN rail); (5) Operating ambient temperature range; and (6) Anticipated order volume.
Are your production facilities verified by third-party Western inspection bodies?
Yes. Shaanxi Zelqo Power Co., Ltd.'s manufacturing facilities, assembly workstations, testing procedures, and business credentials have been audited on-site and verified by Intertek. Buyers can directly request our comprehensive inspection assessment reports to streamline internal vendor approval processes.
Can you manufacture vacuum-varnished or epoxy-potted transformers for harsh environments?
Yes. We offer automated vacuum pressure impregnation (VPI) with Class H/F varnish as well as complete polyurethane or epoxy encapsulation. These treatments provide mechanical dampening, ingress protection up to IP67, high dielectric resistance, and protection against chemical fumes and moisture common in automotive stamping and metal processing plants.