Oil-immersed Transformer

  • 22KV
  • 220kV
  • 110KV
  • 35KV
  • 11KV
  • Amorphous Alloy

22KV Oil Immersed Distribution Transformer

High Value Performance
Low Operating Risk
High Cooling Efficiency
Low Service Cost
  • Brand:Diteli – Professional Transformer Manufacturer
  • Capacity:100KVA-2500KVA
  • Applications:Utility Substations / Power Generation Plants / Solar & Wind Energy Projects / Industrial Power Systems

220KV Oil Immersed Power Transformer

High Voltage Capacity
Low Energy Loss
High Insulation Strength
Low Noise Performance
  • Brand:Diteli – Professional Transformer Manufacturer
  • Capacity:31.5MVA – 420MVA
  • Applications:Utility Substations / Power Generation Plants / Solar & Wind Energy Projects / Industrial Power Systems

110KV Oil Immersed Power Transformer

High Operational Reliability
Low Partial Discharge Level
High Short-circuit Resistance
Low Service Requirement
  • Brand:Diteli – Professional Transformer Manufacturer
  • Capacity:6300KVA-180000KVA
  • Applications:Utility Substations / Power Generation Plants / Solar & Wind Energy Projects / Industrial Power Systems

35KV Oil Immersed Power Transformer

High Efficiency Output
Low Iron Loss
High Load Adaptability
Low Temperature Rise
  • Brand:Diteli – Professional Transformer Manufacturer
  • Capacity:100KVA-31500KVA
  • Applications:Utility Substations / Power Generation Plants / Solar & Wind Energy Projects / Industrial Power Systems

11KV Oil Immersed Distribution Transformer

High Installation Flexibility
Low Noise Output
High Power Stability
Low Energy Consumption
  • Brand:Diteli – Professional Transformer Manufacturer
  • Capacity:100KVA-10000KVA
  • Applications:Utility Substations / Power Generation Plants / Solar & Wind Energy Projects / Industrial Power Systems

Amorphous Alloy Distribution Transformer

Ultra-low Core Loss
High Energy Saving Level
Low Temperature Rise
High Environmental Benefit
  • Brand:Diteli – Professional Transformer Manufacturer
  • Capacity:100KVA-10000KVA
  • Applications:Utility Substations / Power Generation Plants / Solar & Wind Energy Projects / Industrial Power Systems

Oil Transformer Applications

  • EPC
  • National Grid & Utility
  • Industrial&Commercial
  • Infrastructure Development
  • Distribution Networks

🌍 For EPC Power Projects

Engineered for Large-Scale Power Projects

From substation construction to transmission expansion, EPC contractors require transformers that meet strict technical standards, tight delivery schedules, and complex project specifications. Our 220kV / 110kV / 35kV oil-immersed power transformers are engineered to support large-scale utility projects worldwide.

Request a Project-Specific Technical and Price Proposal

Talk to An Expert

Why EPCs Choose Us

  • Complies with IEC / IEEE / GOST / GB standards
  • Provides complete project technical documentation package
  • Supports Factory Acceptance Testing (FAT)
  • High short-circuit withstand capability design
  • Suitable for overseas transportation and on-site installation
  • Stable production cycle to ensure project progress

⚡For National Grid & Utility

Built for Long-Term Grid Reliability

Grid operators require transformers that deliver stable performance for decades under continuous load and varying environmental conditions. Our high-voltage oil-immersed transformers ensure reliable transmission and distribution performance.

Request a Project-Specific Technical and Price Proposal

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Designed for Utility Demands

  • Low no-load and load losses, reducing lifecycle costs
  • Optimized cooling system design
  • Strong mechanical shock resistance
  • Optional online monitoring system
  • Design life of 25–30 years
  • Suitable for extreme climate environments

🏭 For Industrial&Commercial Plants

Stable Power for High-Demand Industrial Operations

Industrial facilities cannot afford voltage instability or unexpected downtime. Our 35kV / 22kV / 11kV oil-immersed and amorphous alloy transformers provide reliable power for factories, mining sites, data centers, and manufacturing plants.

Request a Project-Specific Technical and Price Proposal

Talk to An Expert

Optimized for Industrial Applications

  • High short-circuit withstand capability
  • Excellent overload capacity
  • Reduces harmonic impact
  • Amorphous alloy energy-saving solution
  • Compact structural design
  • Supports customized configurations

🏗 Infrastructure Development

A Reliable Manufacturing Partner

Distributors require stable supply, competitive pricing, and strong technical support. We provide flexible manufacturing solutions to support partners in expanding their local markets.

Request a Project-Specific Technical and Price Proposal

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Distributor-Focused Advantages

  • Flexible minimum order quantity
  • Stable production capacity guarantee
  • Quick quotation response
  • Complete technical documentation support
  • Customizable brand labeling
  • After-sales service assistance

🔌 Power Distribution Networks

Designed for Renewable & Infrastructure Expansion

Modern power systems demand transformers capable of supporting renewable integration and infrastructure expansion. Our transformers are engineered for solar farms, wind projects, and large-scale infrastructure developments.

Request a Project-Specific Technical and Price Proposal

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Adapted to Harsh & Dynamic Conditions

  • Suitable for photovoltaic and wind power projects
  • High overload capacity design
  • Optional anti-corrosion coating
  • Adaptable to desert, coastal, and high-humidity environments
  • Stable performance under load fluctuations

Not Sure Which Transformer Fits Your Project?

We understand that choosing the right transformer for your specific application can be challenging.

We can offer you:

  • Product selection technical support
  • Layout suggestions
  • Loss and Efficiency Calculation
  • Budget quotation within 24 hours

Speak With Our Transformer Engineer

we are committed to driving innovation in the electrical equipment industry while consistently delivering efficient, safe, and reliable solutions.

Contact Us

Why Choose Diteli

• Up to 220kV transformer solutions
• IEC / ISO / CE certified manufacturing
• Custom transformer design for projects
• 24-hour engineering response

Request a Transformer Quotation

Can we visit your factory before placing an order?

Absolutely. During your visit, you can review our production lines, testing laboratory, quality control process, and ongoing projects. We can also arrange technical discussions with our engineering team to review your project requirements in detail.

Kellen

Sales Director

Do you provide FAT (Factory Acceptance Test)?

Yes. We support full FAT inspection according to IEC standards. Clients or third-party inspectors can witness routine tests, type tests, and special tests as required.Complete test reports and documentation will be provided before shipment.

Li Xiaojing

lab Manager

Are you a manufacturer or a trading company?

We are a dedicated manufacturer specializing in power transformers. Our production facilities include transformer winding workshops, core assembly lines, metal fabrication units, and high-voltage testing laboratories.We maintain full control over manufacturing, quality inspection, and factory testing to ensure long-term reliability for utility and industrial applications.

David

Technical Director

What is your approach to project delivery and timelines?

Production schedules are defined after technical confirmation and contract approval.Our planning team coordinates raw material procurement, manufacturing stages, and final testing to align with project milestones.For time-sensitive EPC projects, we evaluate priority production scheduling to support contractual deadlines.

Michael Liu

Production & Quality Manager

What warranty and after-sales support do you provide?

Our standard warranty terms range from 12–24 months depending on project type and contractual agreement.During the warranty period, we provide remote technical support and necessary spare parts. For large projects, extended warranty and long-term service agreements can be discussed.Our objective is to support the full lifecycle of the equipment.

CoCo

International Business Director

Still Have Questions?

Our engineering team can help you choose the right transformer solution. Send your requirements and receive a customized proposal within 24 hours.

Director

Technical