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Oil-Immersed Power Transformer
Oil-Immersed Power Transformer is a critical electrical device widely used in power generation, transmission, distribution, industrial, and commercial applications.
Designed to transfer electrical energy between different voltage levels with high efficiency, our transformer utilizes mineral oil as an insulating and cooling medium to ensure reliable performance under varying load conditions.
Our oil-immersed transformers comply with international standards such as IEC 60076 and are known for their excellent voltage regulation, thermal stability, and long service life.
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Key Features of Oil-Immersed Power Transformer
Efficient Oil Insulation & Cooling
Mineral oil enhances dielectric strength and dissipates heat generated during operation, reducing thermal stresses and improving reliability.
Wide Voltage & Capacity Range
Available from low distribution levels up to high-voltage power networks, with typical capacity ranges from 10 kVA to 250,000 kVA for different electrical systems.
Flexible Tapping Options
On-load or off-circuit tap changers provide adjustable voltage regulation, supporting grid stability and adaptation to voltage fluctuations.
Durable Construction
Robust core and winding assemblies ensure outstanding short-circuit withstand capability and long-term operational durability.
Compliance with Global Standards
Products are engineered to meet international standards (IEC, IEEE/ANSI) and applicable local requirements, ensuring both safety and interoperability.
Applications of Oil-Immersed Power Transformer
Oil-immersion transformers are versatile components utilized in:
- Power Distribution Networks for urban and rural power delivery
- Industrial Facilities (factories, plants) requiring stable medium-voltage distribution
- Commercial Complexes and Infrastructure (buildings, campuses, hospitals)
- Renewable Energy Integration and voltage step-down/up solutions
Our oil-immersion transformers are built to ensure long service life, minimal maintenance, and high operational reliability across a wide range of environmental conditions.
Technical Parameters of Oil-Immersed Power Transformer
| Standard | Rated Capacity (kVA) | High Voltage | Tapping Range | Low Voltage | Connection of Transformer Winding | No-load Loss (W) | Load Loss (W) 145℃ | No-load Current (%) | Impedance Voltage (%) |
|---|---|---|---|---|---|---|---|---|---|
| IEC60076-1, IEC60076-2, IEC60076-3, IEC60076-5, IEC60076-10 | 2000 | 35kV, 38.5kV, or other | ±3×2.5% | 6.3kV, 10.5kV, or other | Yd11 | 2300 | 19200 | 0.5 | 6.5 |
| 2500 | 2720 | 20600 | 0.5 | 6.5 | |||||
| 3150 | 3230 | 24700 | 0.45 | 7.0 | |||||
| 4000 | 3870 | 29100 | 0.45 | 7.0 | |||||
| 5000 | 4640 | 34200 | 0.45 | 7.0 | |||||
| 6300 | 5630 | 36700 | 0.45 | 8.0 | |||||
| 8000 | YNd11 | 7870 | 40600 | 0.4 | 8.0 | ||||
| 10000 | 9280 | 48000 | 0.4 | 8.0 | |||||
| 12500 | 10900 | 56800 | 0.35 | 8.0 | |||||
| 16000 | 13100 | 70300 | 0.35 | 8.0 | |||||
| 20000 | 15500 | 82100 | 0.35 | 8.0 | |||||
| 25000 | 18300 | 97800 | 0.3 | 10.0 | |||||
| 31500 | 21800 | 11600 | 0.3 | 10.0 |
