110kV Three-Phase Three Winding Power Transformer
110kV three-phase three winding power transformer with high, medium, and low voltage windings for multi-level substation power distribution.
Our 110kV three-phase three winding power transformer is engineered to serve multiple voltage levels from a single unit, using separate high-voltage, medium-voltage, and low-voltage windings. Designed and optimized using advanced technologies applied to the transformer core, coil, body, leads, and fuel tank, this transformer delivers low partial discharge, low loss, low noise, and high reliability for substations and large industrial facilities requiring flexible voltage distribution.
Overview
Unlike a two-winding transformer, the three-winding design incorporates a distinct high-voltage, medium-voltage, and low-voltage winding within a single unit, allowing it to step 110kV input down to two separate output voltage levels simultaneously. This makes the transformer particularly well-suited to substations that need to supply both a medium-voltage distribution network and a lower-voltage industrial or facility load from a single transformer, reducing the equipment footprint compared to installing separate units for each voltage level.
Every component of this transformer, from the core and coil to the body, leads, and fuel tank, is optimized through an integrated engineering process that draws on advanced technologies developed both domestically and internationally. This approach delivers low partial-discharge and low-loss performance, along with reduced operating noise and a lightweight design that simplifies transportation and installation at substations and industrial sites. The result is a transformer that maintains high reliability under continuous multi-voltage operation, a performance standard that has earned strong praise from users and technical experts alike.
Built with stability, economy, and environmental protection as guiding design principles, the 110kV three-phase three-winding power transformer is well-suited to power plants, substations, large industrial facilities, and mineralization enterprises that require multi-level voltage distribution from a single transformer. Its ability to serve multiple voltage classes simultaneously makes it a practical, space-efficient solution for complex power distribution needs, while its low-loss design supports long-term operating efficiency and reduced environmental impact.
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Product Specifications
- Voltage Class
- 110 kV
- Winding Type
- Three-phase Three Winding
- Tap Changer
- On-load tap changer
- HV Voltage Combined
- 110 ± 8×1.25%
- MV Voltage Options
- 35 / 38.5 kV
- LV Voltage Options
- 6.3 / 6.6 / 10.5 / 11 kV
- Vector Group
- YNyn0d11
- Short Circuit Impedance
- H-M 10.5%, H-L 17.5–18.5%, M-L 6.5%
- Available Capacities
- 6300 – 63000 kVA
- No-load Loss Range
- 12.0 – 67.7 kW
- Load Loss at 75°C Range
- 47 – 270 kW
- No-load Current Range
- 0.67% – 0.95%
- Model Number Pattern
- VO-UT-3TWP-{kVA}-110kV-{LkV}
Specification Table
| Rated Capacity (kVA) | No-load Loss (kW) | Load Loss 75°C (kW) | No-load Current (%) |
|---|---|---|---|
| 6300 | 12 | 47 | 0.95 |
| 8000 | 14.4 | 55 | 0.95 |
| 10000 | 17.1 | 66 | 0.89 |
| 12500 | 20.2 | 78 | 0.89 |
| 16000 | 24.2 | 95 | 0.84 |
| 20000 | 28.6 | 112 | 0.84 |
| 25000 | 33.8 | 133 | 0.78 |
| 31500 | 40.2 | 157 | 0.78 |
| 40000 | 48.2 | 189 | 0.73 |
| 50000 | 56.9 | 225 | 0.73 |
| 63000 | 67.7 | 270 | 0.67 |
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