Aerial view of XinHuan transformer manufacturing facility in Hefei, China

Intent Landing Page · China Manufacturer

China Transformer Manufacturer for 11kV / 33kV Oil-Immersed Supply

Factory-direct oil-immersed transformer supply from Hefei, China for buyers who are specifically searching for a Chinese manufacturer with 11kV / 33kV distribution range, export documentation, and technical quotation support.

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Factory-direct quotes from $1,800 USD 2-Hour Fast CIF Quote Export documents supported
11kV / 33kV
Voltage Class
50–3150kVA
Core Range
50Hz
Frequency
IEC 60076
Design Reference

China Manufacturer Search Intent

Factory-Direct Oil-Immersed Distribution Supply

This landing page is designed for buyers whose search intent is not just product type but source-country confidence. If someone is searching transformer manufacturer China, china transformer manufacturer, or power transformer manufacturer, they usually want proof of real factory capability, usable product range, test documentation, and export execution rather than generic country-page copy.

XinHuan focuses this page on oil-immersed distribution transformers from 50kVA to 1000kVA, especially 11kV and 33kV models that match Africa and other IEC-led export markets. The page is meant to connect manufacturer trust signals with real product cards and practical RFQ flow.

Product Specification Table

Product Oil-Immersed Distribution Transformer
Voltage 11kV / 33kV
Capacity 50kVA–2500kVA
Frequency 50Hz
Phase Three phase
Cooling ONAN (Oil Natural Air Natural)
Insulation Class A Mineral Oil
Enclosure Hermetically Sealed Corrugated Tank
Standard IEC 60076 / ANSI C57.12.00
Vector group Dyn11 / Yyn0 / customized
Tap changer Off-circuit tap changer (±2×2.5%)
Winding Copper / aluminum
LV voltage 0.4kV / 0.415kV / customized
Installation Outdoor pad-mount / pole-mount / indoor

— VERIFIED QUALITY & COMPLIANCE

Certified B2B Manufacturing & Laboratory Performance

Every transformer, compact substation, and switchgear unit is engineered under audited ISO quality management systems and type-tested according to IEC 60076 and ANSI C57 international standards.

IAF / CNAS Accredited

ISO 9001:2015 Quality System

Certified Quality Management System covering design, coil winding, vacuum drying, oil filling, and routine testing of 10kV–35kV distribution transformers.

Environmental System

ISO 14001:2015 Environmental

Environmental Management System certifying low-loss eco-designed core assemblies, zero PCB insulation oil, and environmentally safe production controls.

Occupational Health

ISO 45001:2018 Safety System

Occupational Health and Safety Management System ensuring safety containment in high-voltage testing bays and factory assembly protocols.

CNAS Lab Type Tests

IEC 60076 & GB Type Tests

Complete routine and type test records (temperature rise, impulse voltage withstand, short-circuit withstand) conducted at CNAS-accredited national research institutes.

SGS Audited Supplier

SGS Verified Manufacturer Audit

On-site factory audit certificate by SGS / Made-in-China, verifying manufacturing premises, export capacity, assembly lines, and legal qualification.

≥180 Units/Yr Export

International Delivery Certificate

Verified annual supply performance and delivery certificate for overseas power grid EPC and industrial infrastructure projects (Mozambique, Nigeria, Kenya, SEA).

Local Market Notes

What China-source Buyers Usually Care About

China-source buyers often decide early based on whether the manufacturer looks real, responsive, and technically clear rather than only on low initial price.

Searches with China manufacturer intent usually want product range, documentation scope, test support, and export-process signals close to the top of the page.

The fastest way to build trust is to show accurate product cards, realistic reference visuals, and a clean RFQ path tied to actual technical data.

Procurement Notes

Information That Speeds Up Approval

If you are comparing several China factories, send the same technical schedule to each supplier so quotations are truly comparable.

State whether you need transformer-only pricing or a broader package with accessories, switchgear coordination, or compact-substation scope.

If your team needs drawings, routine test references, or delivery packing details before approval, include that in the first RFQ round.

Quote Checklist

What to Send First

Voltage ratio and frequency

Required kVA range and quantity

Destination country or port

Transformer-only or package supply

Accessory and approval document needs

Any drawing, test, or inspection request

Engineering Submittal & Room Layout

Substation Room Fit & CAD Footprint Diagrams

Select your required kVA rating to inspect overall dimensions (L × W × H), wheel track gauge, net weight, and minimum electrical room clearance before submittal.

IEC 60076-11 Submittal Specs
XinHuan Dry-Type Core & Coil Technical Drawing
XinHuan Dry-Type IP20 Enclosure Technical Drawing
11kV / 33kV Dual Voltage
IEC 60076 / IEEE Compliant
100% Factory Test Passed
Humidity-Sealed Export Pack

1000 kVA Technical Dimensions

Class F / H Certified
Overall Length (L) 1,680 mm
Overall Width (W) 1,050 mm
Overall Height (H) 1,820 mm
Roller Wheel Track Gauge (D) 820 mm
Total Equipment Net Weight 3,650 kg
Min Substation Clearance 1,000 mm surrounding
Download Technical Data Sheet (PDF) Request Factory Engineering Submittal

Need customized voltage taps, dual primary windings, or IP23 enclosure specs? Submit your project specs for a custom data sheet within 2 hours.

Reference Visuals

Export Photos Buyers Can Compare Against

Oil-immersed transformer batch prepared in XinHuan factory for export buyers

Factory Reference

Real Product Build for China-Source Buyers

A practical visual reference for procurement teams checking whether the manufacturer presents real outdoor oil-immersed distribution equipment.

Export transformer ready for procurement comparison

Export Comparison

Outdoor Distribution Unit for Supplier Comparison

Useful when internal sourcing teams want to compare Chinese suppliers on build form, finish, and product-range credibility.

Tender & Approval Support

Common Information Procurement Teams Ask For

Commercially agreed drawing, nameplate, and technical-document scope

Routine test references and factory inspection coordination

Packing, loading, and export-document support

Accessory and terminal confirmation before final quotation issue

Tell us about any drawing, packing, or accessory requirements in the first RFQ. Detailed design drawings and final approval documents are scoped after commercial terms and project requirements are agreed.

Applications

Typical China-source Project Applications

Export sourcing for utility distribution projects

EPC comparison against other China manufacturers

Industrial and factory distribution procurement

Mini-grid and rural electrification sourcing

Repeat-order and private-label style discussions

Technical review before supplier shortlist approval

Delivery & Ports

Shipment Support for Factory Export Orders

We can support EXW, FOB, or CIF quotation structure for buyers sourcing directly from China, with packing, loading, and export document coordination built into the quote process.

China-source buyers usually want a faster first-pass answer on ratings, document scope, test references, and shipment practicality before they move into final commercial discussion.

Why XinHuan

Why Buyers Choose XinHuan for global sourcing

Factory-direct communication from a real transformer manufacturer in Hefei, China

11kV / 33kV oil-immersed distribution range with practical 50kVA to 1000kVA coverage

RFQ support that connects product choice, document scope, test information, and export documents in one flow

Clear product visuals and reference blocks that help buyers compare China suppliers more confidently

Project Fit

11kV / 33kV Distribution Range

Best for buyers who already know they want to source from China and need product clarity, manufacturer confidence, and export-ready quotation support.

Standard page scope: oil-immersed distribution transformers, 11kV / 33kV, 50kVA–1000kVA, three phase, 50Hz, ONAN cooling, copper/aluminum winding options, Dyn11 / Yyn0 / customized vector group, off-circuit tap changer, and outdoor or indoor installation.

Factory Capability, Shown Directly

See the Finished Transformer Area Behind Your RFQ

These are real photographs from XinHuan's Hefei facility. They show finished oil-immersed distribution transformers in the same manufacturing environment used for export projects.

Rows of completed oil-immersed distribution transformers in the XinHuan finished products workshop
Finished transformer workshop Real completed units, ready for final project checks
Completed oil-immersed transformers in XinHuan's marked finished products area
Finished products area Clear production-stage visibility for procurement teams
XinHuan vacuum drying equipment in the transformer production area
Production process Vacuum-drying equipment inside the working factory
Transformer oil handling area at XinHuan's Hefei factory
Oil treatment area Dedicated transformer-oil handling before dispatch
XinHuan transformer packing and shipping preparation
Export preparation Packing and loading preparation for project delivery
Need a closer look at build, packing, or inspection details? Send your voltage, kVA, quantity, and destination port with the RFQ.
IEC 60076 Routine Test & Assembly HD Factory Video

Factory Visual Proof

Visit the XinHuan Factory Before You Shortlist Suppliers

Explore our Hefei manufacturing facility through authentic production & routine testing videos. Practical visual proof for China-source procurement teams evaluating a direct China manufacturer.

Hefei manufacturing base Automated coil winding & tank welding 100% IEC 60076 routine testing proof
Open Full Factory Tour & Videos
Official YouTube channels: Nancy Xu Serena XinHuan Transformer

Engineering Quality Assurance

Technical Standards & Certification Compliance

All XinHuan transformers undergo 100% factory routine testing, dielectric voltage withstand tests, and partial discharge inspection before dispatch.

IEC 60076 / 60076-11 ISO 9001:2015 Certified KEMA / CNAS Type Tested ANSI / IEEE C57

Engineering Submittal Package

Need CAD outline packs or type test reports for consultant approval in China Manufacturer?

Request Technical CAD & Spec Pack

Specialized Substation & Power Solutions

Featured Technical Engineering & Product Guides

Explore specialized XinHuan power equipment solutions for emergency substations, SF6 gas-insulated distribution, and renewable BESS energy storage.

Related Internal Links

Continue by Product or Region

Use the nearest matching page for specifications, category browsing, or quotation follow-up.

Africa Application Page

See how these 11kV / 33kV products are positioned for African grid and EPC projects.

Sourcing from China Guide

Read the buyer guide for evaluating transformer suppliers and structuring a cleaner RFQ process.

Oil-Immersed Transformer Category

Browse the main category to compare 11kV / 33kV products, capacities, and RFQ entry points.

Request a Factory Quote

Open the RFQ form with China-source transformer context already prepared.

China Manufacturer RFQ CTA

Send Your Transformer Requirement

Send your target voltage, kVA range, quantity, and destination market to receive a factory-direct quotation from XinHuan.

Go to RFQ

FAQ

Frequently Asked Questions for China Manufacturer

Do you supply 11kV and 33kV transformers for buyers sourcing from China?

Yes. XinHuan supplies 11kV and 33kV oil-immersed transformers for buyers sourcing directly from China for utility, EPC, industrial, and export distribution work.

What capacity range is available?

This page focuses on 50kVA to 1000kVA distribution scope, including common 100kVA, 500kVA, and 1000kVA export enquiries.

Can the transformer be designed according to IEC 60076?

Yes. We work around IEC 60076 design reference and can align the product to project voltage ratio, vector group, accessory scope, and application needs.

Can you quote FOB or CIF for buyers sourcing from China?

Yes. We can quote EXW, FOB, or CIF depending on how the buyer wants to handle China export and destination delivery.

What information is needed for a fast quotation?

For the fastest response, send voltage ratio, kVA rating, quantity, frequency, accessory scope, and destination market or port.

Can XinHuan support EPC contractors, utilities, and industrial projects?

Yes. XinHuan supports EPC contractors, distributors, industrial buyers, utilities, and sourcing teams that specifically want a China transformer manufacturer.

Direct Contact & Instant RFQ

Get Instant Factory Quotation

Contact us directly via WhatsApp, email, or fill out the quick RFQ form below for a fast response from our engineering team.

WhatsApp Us: +86-139-0560-5991 Email: [email protected]
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