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

Custom OEM Ferrite Core Manufacturer & Supplier in the Mongolia Market

Precision-Engineered Soft Ferrite Cores, Low-Loss SMPS Magnetics, and Extreme-Temperature Transformers Built for Harsh Mongolian Industrial, Mining, and Renewable Installations.

Engineered Magnetics & Power Systems

Industrial-Grade Power Conversion & Custom Ferrite Core Assemblies

Tested for extreme thermal cycles (-40°C to +85°C), high altitude operations, and maximum magnetic flux resilience across industrial automation grids.

DC Industrial DIN Rail Power Supply
DIN-Rail Mounted MnZn Core Inside

DC Industrial DIN Rail Power Supply

Designed for harsh industrial automation cabinets, integrating custom low-leakage high-frequency ferrite core topologies that deliver stable output under fluctuating input voltages.

Fullstar Custom EMC LVD CE Switching Power Supply
EMC/LVD Certified 100W 24V Output

Fullstar Custom EMC LVD CE Switching Power Supply SMPS 24V 100W 5A

Precision flyback transformer design utilizing low core-loss EE-25 ferrite materials to achieve exceptional electromagnetic compatibility and low thermal emissions in enclosed enclosures.

100w 14.6v 5A UPS Charge Function Switching Power Supply
Battery Backup High Saturation Core

100W 14.6V 5A UPS Charge Function Switching Power Supply

Engineered for cold-climate battery charging and uninterruptible remote systems, built with gapped ferrite inductors to prevent magnetic saturation during peak surge currents.

360W Switch Power Supply High Efficiency LED Power Supply
High Current PQ/ETD Geometry

360W Switch Power Supply High Efficiency Industrial LED Driver

Heavy-duty industrial power supply driven by high-flux PQ-type planar ferrite transformers, maximizing cross-sectional power throughput while reducing parasitic winding capacitance.

5V 2A 3A Universal Power Adapter with Ferrite Ring
EMI Suppression Ferrite Choke Included

5V 2A 3A Universal Power Adapter with Ferrite Ring Suppression

Integrated with high-permeability NiZn ferrite bead filters on the DC cable, providing ultra-clean ripple-free output for telemetry, sensing equipment, and embedded field controllers.

Switching Power Supply 24V 36V 48V 60V 72V
Wide Output Range Multi-Output SMPS

Multi-Voltage Regulated AC to DC Switching Power Supply (24V-200V)

Configurable variable DC power stages equipped with custom toroidal and low-loss pot-core magnetics, delivering constant power curves required for variable-frequency mining instrumentation.

12V 50A 600W Adjustable DC Power Supply
High Current 50A High Power Density

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

Heavy-wattage SMPS engineered with ultra-high frequency EE-42 ferrite magnetic cores and resonant LLC circuits, offering ultra-low power conversion dissipation up to 93% efficiency.

HDR-15-24 Rail Power Supply
Compact Ultra-Slim Isolation Class II

HDR-15-24 Ultra-Slim Industrial Rail Power Supply

Space-saving step-shape DIN-rail unit utilizing high-density planar EFD ferrite cores to satisfy Class II isolation without earth grounding, ideal for distributed mining telemetry.

4.8/5.0
Verified Buyer Rating
25+
Process & QC Test Stations
-45°C ~ +125°C
Extreme Grade Operational Stability
100%
Hi-Pot & Aging Tested
Mongolia Market Localization Whitepaper

Ferrite Core Performance Dynamics Under Mongolian Environmental Realities

Mongolia presents one of the most demanding operational environments in the world for electromagnetic power components and soft ferrite cores. From the extreme continental climate spanning the South Gobi mining corridors (such as Oyu Tolgoi and Tavan Tolgoi) to the high-density municipal grids of Ulaanbaatar, power electronics face thermal swings stretching from -45°C during harsh winter months to +40°C in high summer. For magnetic components, conventional off-the-shelf ferrite cores face severe micro-cracking, sudden Curie temperature shifts, and core loss escalations under such rapid thermal hysteresis cycles.

Shaanxi Zelqo Power Co., Ltd. specifically formulates custom OEM Manganese-Zinc (MnZn) and Nickel-Zinc (NiZn) ferrite core geometries tailored to withstand severe mechanical vibration, high elevation air thinning (which reduces convective cooling capacity), and transient over-voltages generated by localized generator networks. By controlling grain boundary dopants and sintering curves, our custom ferrite cores retain an exceptionally high saturation flux density (Bs > 510 mT at 25°C and > 410 mT at 100°C), preventing core saturation and catastrophic MOSFET breakdown in heavy mining switchgear and remote off-grid solar-diesel hybrid systems.

Application Engineering

Localized Deployment Scenarios in the Mongolian Industrial Landscape

Tailored OEM/ODM magnetics providing structural resistance against airborne coal dust, moisture freezing, and unstable utility grids.

Mining Heavy Equipment & Automation

In the open-pit and underground mines across Erdenet and South Gobi, continuous vibration, mechanical shock, and pervasive conductive dust can destroy standard inductors and SMPS units.

  • Vacuum varnish and epoxy-encapsulated ferrite core assemblies preventing micro-fissure failures.
  • High-frequency planar transformers for ultra-compact PLC control panels inside excavators and conveyors.
  • Resilient creepage distance margins exceeding IEC 61558-1 standard allowances for heavy dust environments.

Renewable Energy: Off-Grid Wind & Solar Inverters

Mongolia's expansive steppes host vast wind and solar projects requiring specialized step-up inverter magnetics that operate smoothly across low daylight and intense UV conditions.

  • Low iron loss (Pcv) MnZn ferrite materials optimized for 50kHz to 250kHz resonant inverter topologies.
  • Toroidal ferrite cores engineered with high initial permeability (μi = 5000 to 10000) for DC-link common-mode filtering.
  • Thermal stabilization additives ensuring zero catastrophic inductance drop during freezing night-to-day transitions.

District Heating Substation Telemetry & Urban Infrastructure

Ulaanbaatar’s massive urban heating grid depends on hundreds of automated heat distribution substations where line-noise and electromagnetic interference (EMI) run rampantly.

  • NiZn ferrite broadband suppression rings and chokes mitigating RF electromagnetic spikes from high-power pumps.
  • Custom EE and EI switching transformers delivering uninterrupted auxiliary power to automated sensor nodes.
  • Hi-pot tested isolation barriers rated up to 4000V AC to withstand line-surge transients without flashover.
Market Intelligence

Emerging Trends in Mongolia's Industrial Electronics Sourcing

As Mongolia advances its "Vision 2050" long-term development policy and accelerates the modernization of its energy transmission corridors, procurement managers are moving away from unbranded, non-standard electronic parts. The historic reliance on generic imported power blocks resulted in frequent winter breakdowns, high maintenance overheads, and system down-times in mission-critical mining installations. Today, the Mongolian procurement landscape demands:

1. Strict Traceability & Material Certification: Direct OEM partnerships with verified manufacturers capable of supplying verified raw-material traceability (RoHS, REACH) and batch-specific LCR/Hi-Pot testing certificates.
2. Custom Dimensional Integration: Retrofit projects in legacy Russian-standard infrastructure require non-standard core geometries and custom bobbin pin layouts to match existing chassis mounts without extensive metalwork retooling.
3. Shift Toward Distributed High-Efficiency SMPS: High energy tariffs and remote off-grid fuel logistics have driven Mongolian engineers toward 92%+ efficient switching mode power supplies, demanding low-loss gapped ferrite cores that maintain stable magnetic characteristics across broad temperature curves.

Enterprise Strengths

Why Sourcing from Shaanxi Zelqo Power Delivers Absolute Certainty

An Intertek-verified production facility located in Xi'an, providing direct-to-Mongolia logistics and world-class magnetic engineering depth.

Intertek On-Site Verified Custom Manufacturer

Shaanxi Zelqo Power Co., Ltd. operates with verified production capacity. Rather than an intermediary trading house, our on-site assembly lines, winding equipment, and QC testing stations are inspected and verified by global registrar Intertek, ensuring transparency in every purchase contract.

In-House Tooling & Magnetic Simulation

Our engineering division calculates optimal core parameters, wire gauges (including triple-insulated wire and copper foil windings), turns ratio, and magnetic leakage inductance using finite element electromagnetic modeling. We do not re-label catalog parts; we engineer the circuit around your specific mechanical and electrical envelope.

25+ Production & Strict Multi-Stage QC Stations

Every magnetic assembly undergoes rigorous multi-station validation: incoming raw material verification, CNC precision coil winding, circular toroidal winding, automated tape wrapping, vacuum varnish/potting, semi-finished testing, full-load burn-in aging, and final hi-pot dielectric breakdown inspection.

Direct Logistics Corridor to Ulaanbaatar

Situated in Xi'an—the primary hub of the China-Europe and China-Central Asia railway network—Zelqo Power provides streamlined, expedited container rail and cross-border trucking logistics through Erenhot to Ulaanbaatar, cutting lead times down to a fraction of coastal suppliers.

B2B Procurement Intelligence

Frequently Asked Questions for Mongolian Importers & Engineers

Addressing the technical, regulatory, and logistical realities of importing custom ferrite cores and switching power equipment into Mongolia.

How do your ferrite cores and transformers withstand Mongolian winter temperatures of -40°C to -45°C?
Standard commercial ferrites often experience resin cracking, wire insulation peeling, and significant permeability loss under sub-zero conditions. Zelqo Power custom-engineers extreme-temperature magnetics utilizing specialized high-flexibility, non-brittle potting epoxies and UL-certified Class H insulation systems. Furthermore, our sintering profiles for MnZn and NiZn soft ferrite materials are engineered so that the lowest loss temperature zone matches your application’s real-world thermal operating range, preventing thermal runaway and insulation failure.
What specific electrical parameters are required to receive an OEM quote for custom high-frequency transformers?
To initiate an engineering review, please furnish: 1) Circuit topology (e.g., Flyback, Forward, Half-Bridge, Full-Bridge, LLC Resonant); 2) Input voltage range and target output voltages with maximum rated currents; 3) Operating switching frequency (in kHz); 4) Maximum physical envelope (L x W x H) and PCB pinout configuration; 5) Isolation voltage requirement (e.g., 3000V AC dielectric withstand); and 6) Target operating ambient temperature and annual volume. If a schematic or benchmark sample is available, our engineers can prototype within 5 to 7 working days.
Can you manufacture replacement magnetics matching legacy Russian or non-standard metric enclosures in Mongolian substations?
Yes. Zelqo Power provides comprehensive ODM reverse-engineering and custom tooling services. We can recreate, re-calculate, and modernise legacy magnetic components from physical samples or original Russian-language technical drawings. We reproduce the exact mounting foot spacing, multi-tap secondaries, and physical terminal layouts while upgrading the internal magnetic core from obsolete laminations to modern, low-loss grain-oriented silicon steel or high-flux soft ferrite cores.
What testing documentation accompanies shipments delivered to Ulaanbaatar or regional industrial sites?
Every production batch ships with a certified Certificate of Analysis (COA) and a detailed Factory Acceptance Test (FAT) report. Our test bench documents LCR digital bridge measurements (inductance, leakage inductance, and Q factor), DC winding resistance, impulse surge insulation readings, hi-pot dielectric breakdown results (primary-to-secondary and primary-to-core), and full-load burn-in aging logs.
What are the shipping routes, customs clearance capabilities, and typical lead times to Mongolia?
From our manufacturing center in Xi'an, shipments are routed via direct road freight or scheduled rail freight through the Erenhot / Zamiin-Uud border point directly into Ulaanbaatar. Transit times typically range between 5 to 10 days post-dispatch. We supply full export documentation sets compliant with Mongolian customs standards, including commercial invoices, packing lists with net/gross weights, certificates of origin, and CE/EMC test declarations.
Does Shaanxi Zelqo Power provide custom labeling, private labeling, and custom protective packaging?
Yes, we offer complete OEM private labeling. We can silk-screen or laser-engrave your local company name, part numbers, bar codes, and customized Mongolian/English instructional labels directly onto transformers, adapters, and enclosed power supplies. All export packaging features heavy-duty moisture-barrier wrapping, desiccant packs, high-density drop-tested foam inserts, and palletized crating built to endure long-distance rail transit over unpaved regional routes.

Accelerate Your Project with Custom-Engineered Magnetic Solutions

Connect directly with our senior power conversion engineering team in Xi'an. From rapid prototyping to volume OEM supply across Mongolia, we deliver custom transformers and power supplies built to your exact specifications.

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