138kV Oil-Immersed Power Transformer
The 138kV oil-immersed power transformer is designed for high-voltage power transmission,
substations, renewable energy plants, and industrial distribution networks. With a primary voltage range
of 132kV–138kV and secondary voltages including 11kV, 10.5kV, and 6.6kV, this transformer provides
excellent insulation performance, high efficiency, and long-term stable operation.
Key Features
- 138kV oil-immersed design with excellent dielectric and thermal performance
- Primary voltage: 132kV / 138kV or customized
- Secondary voltage options: 11kV / 10.5kV / 6.6kV / 6.3kV
- Tap changer range: ±8 × 1.25% for precise voltage control
- Connection type: YNd11 or other configurations
- Rated capacity: 10MVA–60MVA
- Low-loss design with high mechanical strength and short-circuit resistance
- Compliant with IEEE, CSA, AS, IEC standards
- Suitable for substations, solar power stations, and mining industrial systems
Applications
- 132kV–138kV transmission and distribution substations
- Solar power generation stations
- Heavy industrial and mining power systems
- Large commercial and industrial distribution networks
Technical Specifications
| Rated Capacity | High Voltage | Low Voltage | No-load Loss (kW) | Load Loss (kW) | No-load Current (%) |
|---|---|---|---|---|---|
| 10MVA | 132kV / 138kV | 6.3kV | 11.8 | 51.2 | 0.82 |
| 12MVA | 6.6kV | 13.7 | 59.5 | 0.82 | |
| 15MVA | 10.5kV | 16.3 | 73.1 | 0.76 | |
| 20MVA | 11kV | 19.5 | 88.4 | 0.76 | |
| 25MVA | 22.7 | 105 | 0.69 | ||
| 30MVA | 24.6 | 126 | 0.69 | ||
| 37.5MVA | 27.4 | 148 | 0.63 | ||
| 50MVA | 38.9 | 184 | 0.63 | ||
| 60MVA | 46.4 | 221 | 0.57 |
Why Choose Our 138kV Transformer?
- High-voltage insulation class for long-term reliability
- Advanced winding technology reduces losses
- Designed for harsh industrial and outdoor environments
- Customized HV/LV configurations available
- Factory-direct supply with full type testing
Contact us for drawings, pricing, and customized 138kV transformer solutions for your project.
