1. Introduction – High-Performance 66kV Transformer for Modern Power Systems
Yawei Transformer manufactures high-quality 66kV Transformer (10 MVA Power Transformer) designed for utility substations, power distribution networks, and industrial grid applications.
This 66kV substation transformer is engineered for stable voltage conversion from 66kV to medium voltage levels (such as 11kV), ensuring efficient and reliable power delivery in modern electrical infrastructure.
As a professional China power transformer manufacturer and factory, Yawei Transformer provides factory-direct supply, OEM customization, and wholesale solutions for global customers including USA, Canada, Europe, and international EPC projects.
Our transformers are widely used in utility grid expansion, renewable energy integration, and industrial power systems, ensuring long-term reliability and low operational losses.
2. Technical Specifications – 66kV / 10 MVA Power Transformer
| Parameter | Specification |
|---|---|
| Product Type | 66kV Transformer / Substation Transformer / Power Transformer |
| Rated Voltage | 66kV / 11kV |
| Capacity | 10 MVA (customizable 6–20 MVA) |
| Transformer Type | Oil-immersed Power Transformer |
| Phase | Three-phase Distribution Transformer |
| Cooling Method | ONAN / ONAF |
| Frequency | 50Hz / 60Hz |
| Winding Material | Copper / Aluminum (optional) |
| Vector Group | Dyn11 / Yyn0 / customized |
| Tap Changer | Off-circuit or OLTC optional |
| Insulation System | Oil-paper insulation system |
| Standards | IEC / IEEE / ANSI compliant |
| Installation | Outdoor Substation / Utility Grid |
3. Product Features – Reliable 66kV Power Transformer
✔ High-efficiency 66kV Transformer design for utility applications
✔ Low loss and energy-saving 10 MVA Power Transformer
✔ Strong short-circuit withstand capability
✔ Stable operation under heavy industrial load
✔ Advanced oil-immersed cooling system
✔ Long service life and low maintenance cost
✔ Fully compliant with international standards (IEC / IEEE / ANSI)
4. Applications – Substation & Utility Grid Solutions
noastre 66kV Power Transformers are widely used in:
- Utility power distribution substations
- Regional and national grid systems
- Industrial manufacturing facilities
- Mining and heavy-load power systems
- Renewable energy (solar / wind) integration
- EPC transmission and substation projects
- Step-down voltage transformation systems (66kV to 11kV or medium voltage)
5. Manufacturing Strength – China Transformer Factory
Yawei Transformer is a professional China transformer manufacturer and factory, specializing in:
- 66kV Transformer production
- 10 MVA Power Transformer manufacturing
- Substation Transformer OEM/ODM solutions
- Utility-grade Distribution Transformer systems
Our factory includes:
- Core cutting and stacking workshops
- Precision winding production lines
- Vacuum oil filling system
- High-voltage testing laboratory
- Final assembly and inspection center
Every Power Transformer is strictly tested before delivery to ensure reliability and performance.
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6. Custom Design & OEM / ODM Services
We provide fully customized solutions for 66kV Transformer projects:
- Custom voltage ratio (66kV / 33kV / 22kV etc.)
- Customized 10 MVA Transformer design
- Copper or aluminum winding options
- Low-noise urban substation design
- High-altitude, coastal, or desert environment adaptation
- IEC / IEEE / ANSI compliance customization
- EPC project engineering support
7. Testing & Quality Assurance
Every 66kV Power Transformer undergoes strict factory testing:
✔ Routine electrical tests
✔ Insulation resistance & dielectric tests
✔ Load & no-load loss measurement
✔ Partial discharge testing
✔ Temperature rise test
✔ Short-circuit mechanical strength test
✔ Noise level testing
Only fully qualified transformers are released for global shipment.
8. Price & Factory Supply Advantage
Yawei Transformer provides factory-direct pricing for all 66kV Transformer and 10 MVA Power Transformer projects.
Key advantages:
- No middleman cost (direct factory supply)
- Competitive wholesale pricing
- EPC project pricing support
- Long-term supply agreements available
- Reduced lifecycle maintenance cost
9. Packaging & Global Shipping
All Power Transformers are prepared for safe international export:
- Vacuum oil sealed before shipment
- Shock-resistant wooden/steel packaging
- Moisture and corrosion protection
- Complete export documentation
We deliver globally to:
- USA utility grid projects
- Canada power distribution systems
- Europe transmission networks
- Asia, Middle East, Africa EPC projects
10. Delivery Time & Production Capacity
- Standard lead time: 30–90 days
- Fast-track EPC project delivery available
- Large-scale manufacturing capacity
- Stable supply chain for long-term contracts
11. Installation & Technical Support
We provide full support for 66kV Transformer installation:
- Installation guidance
- Commissioning assistance
- Electrical integration support
- Maintenance documentation
- Remote technical consultation
13. Energy Efficiency & Sustainability
Yawei Power Transformers are designed for:
- Low-loss core technology
- High-efficiency energy conversion
- Reduced carbon emissions
- Long operational lifespan
- Environmentally friendly insulation systems
14. Why Choose Yawei Transformer
✔ Leading China 66kV Transformer manufacturer
✔ OEM/ODM 10 MVA Power Transformer factory
✔ Strong global export experience
✔ IEC / IEEE / ANSI compliant production
✔ Factory-direct wholesale supply
✔ Reliable utility-grade performance
✔ EPC project support capability
15. Contact Us
Contact Yawei Transformer for:
- 66kV Transformer quotation
- 10 MVA Power Transformer datasheet
- Custom substation transformer design
- EPC project cooperation
- Wholesale and OEM supply inquiry
We deliver reliable 66kV Power Transformers, Substation Transformers, and Distribution Transformers for global utility and industrial power systems.
FAQ
❓ What is a 66kV Transformer used for?
A 66kV Transformer is used to step down high-voltage electricity (66kV) to medium voltage levels for distribution in substations and utility grids.
❓ What is a 10 MVA Power Transformer?
A 10 MVA Power Transformer is a medium-capacity transformer used in power distribution systems for stable voltage conversion and load balancing.
❓ Can Yawei Transformer customize 66kV transformers?
Yes, we provide full OEM/ODM customization including voltage, capacity, cooling system, and design standards.
❓ Do you supply USA and Canada?
Yes, we export 66kV Power Transformers to USA, Canada, Europe, and global EPC projects.
❓ What standards do your transformers follow?
We comply with IEC, IEEE, and ANSI standards for global utility applications.
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