High-Quality 66kV Power Transformers | Reliable Performance & Custom Design
High Efficiency and Energy Saving, Stable Performance
Utilizing high-quality silicon steel sheets and advanced winding technology, our 66kV power transformers offer low no-load and load losses, ensuring high operating efficiency.
- Compliant with international standards (IEC, ANSI, GB) for long-term, high-load operation
- Equipped with intelligent monitoring systems for temperature control and oil level monitoring
- Designed for stable, long-term operation in demanding environments
Customizable for Various Applications
Our transformers can be tailored to meet specific project requirements:
- Custom capacity options (10MVA, 20MVA, etc.)
- Multiple cooling methods available (ONAN, ONAF)
- Flexible wiring configurations
- Specialized designs for outdoor/indoor installation, earthquake resistance, waterproofing, and corrosion resistance
Ideal for power transmission/distribution, renewable energy projects (wind/solar), and industrial applications (factories, mines).
Reliable Quality with Global Service Support
- Manufactured using fully automatic vacuum drying and oil filling processes
- Certified to ISO9001, CE, and CCC standards
- Available for third-party testing verification
- Global distribution with comprehensive after-sales support
Technical Specifications
| Rated Power (KVA) |
High Voltage (HV) |
Low Voltage (KV) |
Connection Symbol |
Short Circuit Impedance |
No-load Loss (W) |
On-load Loss (W) |
No-load Current (%) |
| 6300 |
63 66 69 |
6.3 6.6 10.5 11 |
YNd11 |
9 |
8250 |
34000 |
0.63 |
| 8000 |
|
|
|
|
9830 |
40400 |
0.63 |
| 10000 |
|
|
|
|
11600 |
47600 |
0.75 |
| 12500 |
|
|
|
|
13600 |
56500 |
0.53 |
| 16000 |
|
|
|
|
16300 |
69500 |
0.49 |
| 20000 |
|
|
|
|
19200 |
84200 |
0.49 |
| 25000 |
|
|
|
|
22600 |
99500 |
0.42 |
| 31500 |
|
|
|
|
26800 |
120000 |
0.42 |
| 40000 |
|
|
|
|
31900 |
140300 |
0.39 |
| 50000 |
|
|
|
|
38600 |
174300 |
0.39 |
| 63000 |
|
|
|
|
44400 |
210000 |
0.39 |
Key Features
- Low partial discharge for enhanced safety and longevity
- Minimized energy loss for improved efficiency
- Reduced noise operation for better environmental integration
- Lightweight design without compromising reliability
- Economical operation with environmentally friendly materials
Widely used in power plants, substations, and large industrial/mining enterprises. Developed using advanced domestic and international technologies with optimized core, winding, active parts, leads, and tank designs.