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

Custom OEM Three Phase Transformer Supplier & Suppliers for Timor-Leste

High-efficiency, climate-hardened power magnetics and switching solutions custom engineered for Dili’s coastal marine grid, microgrids, and emerging industrial hubs.

Export-Grade Power Conversion Portfolio

High-Performance Power Units & Transformers Ready for Deployment

Pre-tested magnetic components, AC-DC switching power systems, and adapters certified to IEC safety guidelines, engineered to handle severe input-voltage fluctuations in South-East Asian operations.

5V 2A 3A Universal Power Adapter US Plug 5521 DC
Wall Mount SMPS

5V 2A 3A Universal Power Adapter US Plug 5521 DC Wall Mount

Built-in ferrite choke ring to suppress high-frequency line noise; ideal for sensitive telecommunication and micro-controller instrumentation in Timor-Leste field sites.

5V 2A 10W AC DC Switching Power Adapter
Class VI Energy

5V 2A 10W AC DC Switching Power Adapter Wall Plug CE FCC

Meets DoE Level VI green efficiency requirements with an ultra-wide 100–240V AC universal input, preventing thermal brownouts during municipal supply drops.

100w 14.6v 5A UPS Charge Function Switching Power Supply
Battery & UPS

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

Intelligent dual-channel output powering industrial loads while managing battery float backup, crucial for critical communications facing frequent island power outages.

Custom 1500W High Voltage Switching Power Supply
Heavy Industrial

Custom 1500W 0-1200VDC High-Power Switching Power Supply

Heavy-duty chassis offering configurable current and voltage ranges up to 100A; engineered for processing lines, laboratory tests, and marine auxiliary electrical gear.

DC 12V 24V Lighting Transformer LED Power Adapter
Commercial LED

DC 12V 24V Lighting Transformer AC 110V 220V LED Power Adapter

High-grade aluminum extrusion housing ensuring natural thermal dissipation without fans in dusty or humid commercial architectural and perimeter lighting installations.

Universal Multi Voltage DC Switching Power Adapter
Multi-Rail Tap

5V 6V 9V 12V 15V 18V 19V Multi-Voltage DC Switching Adaptor

Multi-tap precision regulation supporting OEM sub-assembly lines and servicing workshops that manage diverse imported European and Asian hardware.

Variable Voltage Power Supply 240W Industrial Converter
Automation Control

240W Variable Voltage AC 110V/220V to DC CCTV Converter

Integrated overload, short-circuit, and thermal trip triggers; engineered for municipal CCTV feeds and automated pump controls along the Betano corridor.

9V 2A Adapter Power Supply AC DC Industrial
Field Instruments

Universal 9V 2A AC-DC Adaptor Power Supply 1A-10A Series

Compact reinforced insulation wall-plug transformer unit; rigorously hi-pot tested for field sensors, smart meters, and telemetry devices operating in tropical zones.

Engineering White Paper & Field Realities

Three Phase Transformer Deployment Across Timor-Leste’s Energy Landscapes

Operating transformers in Timor-Leste requires engineering resilience against tropical humidity, salt-spray corrosion, and extreme load swings. Shaanxi Zelqo Power customizes electromagnetic solutions configured specifically for these operating challenges.

1. Port & Coastal Marine Infrastructure (Dili & Tibar Bay)

The modernization of the Port of Dili and Tibar Bay Deepwater Port necessitates robust dry-type and oil-immersed three-phase step-down transformers (e.g., 20kV to 400V/230V). Coastal air features high sodium chloride saturation and 85%+ relative humidity.

  • C5-M marine-grade anti-corrosive paint finishes
  • Vacuum Pressure Impregnation (VPI) Class H resin
  • IP54 to IP65 sealed weatherproof terminal enclosures

Our vacuum-impregnated toroidal and three-phase copper windings resist salt crust accumulation, preventing dielectric insulation breakdown under continuous thermal load.

2. Remote Hybrid Solar Microgrids & Mountain Municipalities

Districts like Ermera, Baucau, and Oecusse rely heavily on decentralized diesel-solar hybrid microgrids. Inverter harmonics, inductive pump kicking currents, and steep voltage drops along overhead distribution lines create major stability hurdles.

  • Dyn11 vector group for harmonic mitigation & unbalance
  • Off-Circuit / On-Load Tap Changers (±2×2.5% to ±5%)
  • Low eddy-current loss cold-rolled grain-oriented steel

Zelqo supplies step-up auto-transformers and multi-tap isolation units that balance fluctuating inverter solar bus feeds without triggering false inverter ground trips.

3. Agro-Processing & Light Industrial Manufacturing

Timor-Leste's economic diversification focuses on domestic processing—such as high-value organic coffee wet mills in Gleno, fisheries cold storage, and construction materials plants. These motor-heavy inductive loads cause substantial inrush currents.

  • High short-circuit withstand capability (up to 20x nominal)
  • Custom thermal monitoring with PT100 temperature sensors
  • Reduced noise decibel profile for interior factory floors

We calculate dynamic winding stresses to ensure that frequent induction motor startups do not loosen coil geometry over decades of service.

Direct Manufacturing Authority

Why International Buyers Trust Shaanxi Zelqo Power Co., Ltd.

Located in Xi'an, Shaanxi, China, Zelqo Power combines deep electromagnetic calculations with precision automated manufacturing, verified by on-site third-party assessment.

4.8/5.0

Verified Buyer Rating

Consistently audited for contract execution, technical parameter adherence, and transparent lead times across global B2B supply platforms.

100%Full Check

Multi-Stage QC Protocol

Every single magnetic core and winding undergoes LCR bridge testing, inter-turn impulse verification, and primary-to-secondary dielectric tests.

25+ Stations

Automated CNC Equipment

Equipped with CNC winding machines, circular toroidal winding gear, tape wrapping lines, and automated terminal crimpers for uniform tolerance.

OEM/ODM

Tailored Magnetic Profiles

We do not push surplus stock. We wind custom cores, build proprietary bobbins, apply specialized potting, and tailor export crating to your project specifications.

Zelqo Power modern transformer manufacturing facility and assembly lines
Intertek-Verified Manufacturing Facility

Precision Industrial Assembly Ready for Global Sea Freight

Shaanxi Zelqo Power operates dedicated production halls for high-frequency switch-mode units, toroidal audio/control transformers, and three-phase low-frequency industrial units. Our facilities integrate computerized coil tensioners, curing ovens, and digital harmonic analyzers to eliminate internal air voids and acoustic buzzing.

Export packaging complies with ISPM-15 heat-treated palleting and internal moisture-barrier vapor sealing, ensuring that transformers arrive at Dili sea terminal free of oxidation or mechanical transit deformation.

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Local Sourcing Guidance

Frequently Asked Questions: Sourcing Transformers for Timor-Leste

Addressing the specific regulatory, logistical, and technical concerns of Timorese public utilities, mining engineers, and private electrical contractors.

What are the standard input/output voltages and grid frequencies in Timor-Leste? +
The national grid operated by EDTL generally runs at 50 Hz with a standard low-voltage distribution of 230V single-phase and 400V three-phase (four-wire star system). Primary medium-voltage distribution circuits typically operate at 20kV. However, due to line impedances across regional distribution cables, rural voltages can deviate substantially. Zelqo Power designs three-phase transformers with flexible tap settings (e.g., ±2×2.5% or ±5%) to ensure loads receive stable nominal power.
How does Zelqo protect three-phase transformers against tropical corrosion and high humidity? +
Every unit engineered for South-East Asian tropical marine environments undergoes full Vacuum Pressure Impregnation (VPI) utilizing high-grade Class H polyester or epoxy resins. Core lamination edges are sealed with anti-flash rust varnish, and external cabinets feature multi-stage powder coating passing 1,000-hour salt spray testing. Enclosures include stainless-steel hardware, breathable vents with desiccant silica traps, and IP55+ gasketed terminal connection boxes.
Can you produce custom OEM designs to match existing European or Australian cabinet footprints? +
Yes. Many projects in Timor-Leste require replacing aged equipment originally imported from Australia, Portugal, or Indonesia. Provide your physical cabinet dimensions, terminal stud spacing, thermal dissipation limits, and vector group (e.g., Dyn11, Yyn0). Our engineering department will simulate the core and coil geometry to deliver a drop-in replacement that aligns precisely with existing floor mounting channels.
What documentation and test reports are supplied to clear Dili customs and satisfy project engineers? +
Each shipment includes an individualized Factory Acceptance Test (FAT) Report showing cold winding resistance, voltage ratio, phase displacement, no-load loss and excitation current, load loss and impedance voltage, and dielectric hi-pot strength. We provide certificates of origin, commercial invoices, packing lists, and raw material mill certificates. Third-party testing certifications (CE, IEC 61558, IEC 60076) are coordinated upon request.
What is the typical production and sea freight lead time from China to Dili Port? +
Custom sample and prototype builds typically take 10 to 18 working days. Full batch manufacturing of three-phase industrial transformers requires 20 to 30 days depending on capacity (kVA rating) and raw copper stock. Sea freight from Chinese major ports (Shanghai, Ningbo, Shenzhen) to Dili Port usually takes 18 to 28 transit days via regional transshipment hubs (Singapore or Surabaya).
How do you handle small minimum order quantities (MOQ) for pilot test installations? +
Unlike mass-production catalog distributors, Zelqo Power supports engineering flexibility. We accept small pilot orders (from single units for large industrial transformers, or low MOQs for high-frequency/SMPS assemblies) to enable your field verification team to test performance under local grid dynamics before scaling to container-level procurement.

Connect Directly with Our Transformer Design Engineers

Send your voltage requirements, kVA capacity, vector configuration, and installation environment specifications. We provide detailed CAD drawings, electrical parameter datasheets, and CIF Dili quotations within 24 hours.