220kV Three-Phase Duplex Winding Power Transformer
220kV three-phase duplex winding power transformer with Toshiba analysis-based design, low loss, low noise, and superior reliability. Precision-Engineered Power Transformation for High-Capacity Applications
Our 220kV three-phase duplex winding power transformer is engineered using Japanese Toshiba analysis software combined with specialized calculation and validation procedures applied to the transformer core, winding, body, leads, and fuel tank. This omni-directional validation process ensures reliable product performance, delivering a transformer with small volume, light weight, low loss, low partial discharge, and low noise characteristics for substations and large industrial power systems.
Overview
Engineering precision defines this 220kV duplex-winding transformer, with every core component validated using Toshiba analysis software and rigorous calculation procedures. This comprehensive design process, combined with elaborate material selection and efficient manufacturing, results in a transformer with a notably small volume and light weight compared to conventional designs in this voltage class, while maintaining the low-loss and low-partial-discharge performance required for high-capacity power transformation.
Superior process equipment and careful material selection give this transformer its low noise characteristics, an important consideration for installations near populated areas or facilities with strict operational noise requirements. The duplex winding configuration, with a single high-voltage and single low-voltage winding, provides efficient two-level voltage transformation suited to substations and industrial facilities requiring straightforward, high-capacity power conversion at the 220kV class.
Beyond electrical performance, this transformer is designed for practical, long-term operation. Easy installation and maintenance reduce lifecycle costs, while reliable operation and effectively reduced running costs make it an economical choice for utilities and industrial operators managing large-scale power infrastructure. Built with stability, economy, and environmental protection as core principles, the 220kV three-phase duplex winding power transformer is well-suited to power plants, substations, large industrial facilities, and mineralization enterprises requiring dependable, high-capacity power transformation.
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Product Specifications
- Voltage Class
- 220 kV
- Winding Type
- Three-phase Duplex Winding
- Tap Changer
- On-load tap changer
- HV Voltage Combined
- 220 ± 8×1.25%
- LV Voltage Options
- 6.3 / 6.6 / 10.5 / 11 / 35 / 38.5 / 66 / 69 kV
- Vector Group
- YNd11
- Short Circuit Impedance
- 12 – 14%
- Available Capacities
- 31500 – 180000 kVA
- No-load Loss Range
- 38 – 140 kW
- Load Loss at 75°C Range
- 135 – 475 kW
- No-load Current Range
- 0.42% – 0.70%
- Model Number Pattern
- VO-UT-3DWP-{kVA}-220kV-{LkV}
Specification Table
| Rated Capacity (kVA) | No-load Loss (kW) | Load Loss 75°C (kW) | No-load Current (%) | LV (kV) |
|---|---|---|---|---|
| 31500 | 38 | 135 | 0.7 | — |
| 40000 | 45 | 157 | 0.63 | — |
| 50000 | 54 | 189 | 0.56 | — |
| 63000 | 63 | 220 | 0.56 | — |
| 90000 | 80 | 288 | 0.49 | — |
| 120000 | 99 | 346 | 0.49 | — |
| 150000 | 116 | 405 | 0.42 | — |
| 180000 | 135 | 468 | 0.42 | — |
| 120000 | 102 | 355 | 0.49 | 66/69 |
| 150000 | 120 | 415 | 0.42 | 66/69 |
| 180000 | 140 | 475 | 0.42 | 66/69 |
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