EN
Ultra-high Voltage (UHV) Power Transformers (Up to 500kV)
Ultra-high Voltage (UHV) Power Transformers (Up to 500kV) is designed for utility and industrial transmission or subtransmission service. The transformer ratio, MVA rating, insulation levels, cooling arrangement and tap-changer configuration are engineered to match the project network study and approved technical schedule.
|
RATED VOLTAGE |
RATED CAPACITY |
|
STANDARDS BASIS |
TYPICAL APPLICATION |
- Overview
- Recommended Products
Professional Introduction：
Our Ultra-high Voltage (UHV) power transformers are engineered for the most critical nodes of national super-grids, supporting voltage levels up to 500kV and beyond. These units are designed to handle massive power throughput while maintaining extraordinary dielectric integrity and thermal stability. Each UHV transformer undergoes rigorous testing in our world-class high-voltage laboratory to ensure it can withstand atmospheric lightning impulses and switching surges. The core uses the highest grade of laser-scribed silicon steel to minimize magnetization loss, and the cooling system is highly redundant to guarantee reliability during peak summer demand. This series represents our commitment to powering entire nations with stable, efficient, and sustainable energy infrastructure.
Key Features：
✅Extreme Voltage Handling: Specialized insulation designs for 330kV, 400kV, and 500kV applications.
✅Minimal Partial Discharge: Advanced manufacturing clean-rooms ensure partial discharge levels far below international requirements.
✅Massive Capacity: Capable of single-unit capacities reaching 1000MVA for heavy-duty transmission.
✅Intelligent Monitoring: Integrated fiber-optic temperature sensors and online dissolved gas analysis (DGA).
Technical Specifications：
| Item | Specification |
|---|---|
| Rated Voltage | 230kV, 330kV, 400kV, 500kV, 765kV |
| Rated Capacity | 100MVA to 1000MVA |
| Phase | Single-phase or Three-phase units |
| Vector Group | YNd11, YNyn0d11, etc. |
| Cooling Type | ONAF / OFAF / ODAF |
| BIL (Basic Insulation Level) | Up to 1550kV (for 500kV class) |
| Tap Changer | High-capacity On-Load Tap Changer (OLTC) |
| Service Life | 40+ Years |
Main Applications：
✅Cross-border Power Exchange
✅Mega-city Primary Substations
✅Ultra-large Power Plants (Nuclear/Hydro)
