High-Efficiency 22kV Oil-Immersed Power Transformer from China Suppliers and Factory for Industrial Distribution Systems
Product Parameter
| Parameter | Specification |
|---|---|
| Rated Capacity | 30kVA – 2500kVA |
| High Voltage | 22kV |
| Low Voltage | 0.4kV (customizable) |
| Frequency | 50Hz / 60Hz |
| Tap Range | ±5% or ±2×2.5% |
| Connection Group | Dyn11 / Yyn0 |
| Cooling Method | ONAN (Oil Natural Air Natural) |
| Insulation Class | Class F / Class H |
| No-Load Loss | 95W – 1900W |
| Load Loss (75℃) | 800W – 24000W |
| No-Load Current | 0.4% – 2.0% |
| Impedance Voltage | 4% – 6% |
| Insulation Level | LI 125kV / AC 50kV |
Product Applications
Regional Utility Power Distribution Networks
The 22kV oil-immersed transformer is widely used in medium-voltage distribution systems across regional utility grids. It efficiently steps down 22kV power to 0.4kV for residential, commercial, and municipal supply. With operational efficiency reaching up to 98% under rated load, it significantly reduces transmission losses and ensures stable voltage delivery for large-scale public infrastructure and grid expansion projects.
Heavy Industrial Energy Systems
This transformer is suitable for energy-intensive industries such as mining, metallurgy, cement production, and petrochemical processing. It is designed to operate continuously under high-load conditions and can withstand short-term overloads up to 130% of rated capacity, ensuring uninterrupted production and stable energy supply in demanding industrial environments with frequent load fluctuations.
Large Infrastructure & Renewable Energy Projects
The 22kV transformer is widely used in infrastructure developments such as airports, rail transit systems, commercial complexes, and renewable energy plants including solar and wind farms. It ensures stable voltage regulation and efficient grid integration, operating reliably in harsh environmental conditions ranging from -40°C to +45°C, making it suitable for both urban and remote installations.
Product Advantages
Energy-Saving Operation
Efficient transformer structure helps reduce power loss during long-term operation.
Durable Finished Construction
Finished transformer design provides stable performance and structural reliability.
Enhanced Sealing Design
Sealed tank structure protects internal components and extends service life.
Reliable Production Technology
Controlled manufacturing process ensures stable product quality and consistency.
Strong Transportation Stability
Reinforced structural assembly improves resistance to transportation impact.
Flexible Power Capacity
Supports diverse power distribution requirements with multiple capacity options.
Key Benefits
The 22kV oil-immersed power transformer is a reliable and efficient solution for modern medium-voltage distribution systems. With its high efficiency, strong overload capability, and durable sealed design, it is widely used in utility networks, industrial facilities, and infrastructure projects.
Its combination of long service life, low maintenance requirements, and stable electrical performance makes it a cost-effective choice for long-term power system operation and energy efficiency improvement.
FAQ
Q What is the advantage of using a 22kV transformer in power systems?
It is designed for specific medium-voltage networks where 22kV distribution is required, ensuring compatibility and stable voltage conversion.
Q Can this transformer operate in harsh environmental conditions?
Yes, it is designed for reliable operation in temperatures ranging from -40°C to +45°C with proper insulation protection.
Q Is this transformer suitable for continuous industrial operation?
Yes, it is built for 24/7 operation and can handle variable load conditions in heavy industrial environments.
Q What type of cooling system does it use?
It uses ONAN cooling, relying on natural oil circulation and air convection for efficient heat dissipation.
Q Can technical specifications be customized?
Yes, parameters such as capacity, voltage ratio, tap range, and connection group can be customized based on project requirements.
Q What connection groups and insulation classes are standard?
The standard connection groups are Dyn11 / Yyn0, and the insulation is rated for Class F / Class H, providing excellent thermal stability and performance.