Oil Immersed Distribution Transformer Manufacturers – 6-132 kV Range
Subian Electric manufactures oil immersed distribution transformers from 6 kV to 132 kV class at our 50,000-square-metre factory in Xuzhou, Jiangsu, China. Since 2019, our 350+ employees have supplied utilities and distributors in more than 50 countries.
As a factory-direct manufacturer and supplier, we provide factory pricing, custom voltage and capacity configurations and complete test documentation.
Send your specification and target market. Our export team will respond with a quotation, lead time and technical proposal.
Since 2019 · 50,000m² · 350+ Staff
Oil Immersed Distribution Transformers We Manufacture
Oil immersed distribution transformers from 6 kV to 132 kV class – including 66 kV and 110-132 kV units, single-phase pole-mounted and three-phase designs – with routine testing on every unit.
What Is an Oil Immersed Distribution Transformer? Types & Buyer Guide
An oil immersed distribution transformer cools and insulates its windings with transformer oil, enabling economical, high-capacity distribution at voltages from 6 kV up to 132 kV class. It is the backbone of power distribution worldwide.
From rural pole-mounted units to large substation transformers, oil-immersed designs deliver proven reliability, excellent overload capability and easy maintenance – the reasons utilities continue to specify them.
- 6-132 kV class – complete oil-immersed range including 66 kV and 110-132 kV.
- Pole & pad designs – single-phase pole-mounted and three-phase ground units.
- 50,000m² factory – in-house winding, vacuum drying, oil filling and testing.
- 350+ employees – engineering, production and export teams.
- Type test evidence – reports to 110 kV class for project approval.
- OEM / ODM & wholesale – custom branding, packaging and volume supply.
Main Types of Oil Immersed Distribution Transformers
We manufacture three configurations:
Three-phase distribution
Standard units from 30 kVA for grid and industrial distribution.
단상 기둥 장착
Compact units for rural and single-phase networks.
High voltage 66-132 kV
Larger units for regional distribution substations.
Oil Immersed Distribution Transformer Specifications
| 매개변수 | 사양 |
|---|---|
| 정격 전압 | 6 kV – 132 kV class |
| 정격 용량 | 30 kVA – 63000 kVA |
| 빈도 | 50/60 Hz |
| 냉각 | ONAN / ONAF |
| 벡터 그룹 | Yyn0 / Dyn11 / YNd11 |
| 표준 | IEC 60076 / GB 1094 |
How We Manufacture Oil Immersed Distribution Transformers
Material preparation, winding, vacuum drying, oil filling, assembly, inspection and packing follow controlled procedures at our Xuzhou facility.
Production Workshop
Controlled winding, core processing and vacuum drying with quality checkpoints between every stage, so quality is built in from the start.
Quality & Testing Center
Routine inspection on every unit before delivery, with type test reports supporting project approval and market certification.
Materials & Components
Core materials, windings and components are checked against the approved bill of materials on every production run.
OEM / ODM / Agency Supply
Custom branding, packaging and configurations for global partners – from nameplate to complete product design – supported by a dedicated export team.
OEM/ODM & Wholesale Oil Immersed Transformer Supply for Distributors
Brand or resell oil-type units with custom nameplates, packaging and documentation from our factory.
OEM / ODM
Factory-Direct
Custom branding, packaging and product variants built on our standard platforms – from a nameplate to full product design.
Custom nameplate · Custom packaging · Full test docs
Wholesale Supply
Volume Pricing
Factory pricing with flexible container quantities, mixed models per container and reliable global shipping for volume buyers and importers.
Container MOQ · Mixed models · Global shipping
Distributor Support
Channel Partners
Dedicated account management, technical documentation and priority production for distributors and project clients.
Account manager · Sales material · Priority lead times
Pole-Mounted vs Pad-Mounted Oil Immersed Transformers
Pole-mounted units serve overhead rural networks and are economical per kVA. Pad-mounted units sit at ground level in enclosures, suiting urban and commercial sites where overhead lines are not permitted.
Both are built on our oil-immersed platforms – the choice follows your network configuration and site requirements.
Oil Immersed Distribution Transformer Manufacturers: How to Choose
Evaluate manufacturers on vacuum drying quality, type test evidence and utility reference deliveries. These are the real predictors of transformer life.
Subian Electric offers a 50,000m² factory, 350+ employees, ISO9001, CE and UL certification and export to 50+ countries with a complete 6-132 kV range.
Request a quotation with your voltage, capacity and standard – we confirm the design before production.
Certifications & Quality Assurance
Our oil-immersed transformers are produced under ISO9001, ISO14001 and ISO45001 management systems, with CE and UL certification and type test reports.
Product Certifications
Oil Immersed Distribution Transformer FAQ
Answers to the questions utilities and distributors ask most about oil immersed transformers.
어떤 전압을 제조하십니까?
What is the difference between distribution and power transformers?
Can you build single-phase pole-mounted transformers?
What cooling systems are available?
최소 주문 수량은 무엇입니까?
Why is transformer oil used in distribution transformers?
Contact Subian
Need the Right Specification?
Tell us your target market, product type, quantity and technical requirements. Our team will help you identify a suitable configuration for your project.