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High-Efficiency 22kV Oil-Immersed Power Transformer fo.jpg
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High-Efficiency 22kV Oil-Immersed Power Transformer - China Suppliers & Factory for Industrial and Utility Distribution Systems

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The 22kV oil-immersed power transformer is a high-performance medium-voltage distribution unit, specifically designed for reliable energy transmission in industrial, utility, and infrastructure applications. This transformer is extensively utilized in regional power grids and large-scale electrical systems that require compatibility with the 22kV voltage level.

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Manufactured in China by leading suppliers, our transformer features advanced cold-rolled silicon steel cores and premium oxygen-free copper windings, ensuring low energy loss, low noise operation, and exceptional thermal stability. The fully sealed tank structure eliminates the need for an oil conservator, which minimizes maintenance efforts and extends the service life to over 25–30 years under standard operating conditions. As a trusted factory, we prioritize quality and durability in every product we deliver.

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    Product Details

    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
    Energy-Saving Operation
    Efficient transformer structure helps reduce power loss during long-term operation.
    Durable Finished Construction
    Durable Finished Construction
    Finished transformer design provides stable performance and structural reliability.
    Enhanced Sealing Design
    Enhanced Sealing Design
    Sealed tank structure protects internal components and extends service life.
    Reliable Production Technology
    Reliable Production Technology
    Controlled manufacturing process ensures stable product quality and consistency.
    Strong Transportation Stability
    Strong Transportation Stability
    Reinforced structural assembly improves resistance to transportation impact.
    Flexible Power Capacity
    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.

    Key Benefits of 22kV Transformer

    FAQ

    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.

    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.

    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.

    What type of cooling system does it use?

    It uses ONAN cooling, relying on natural oil circulation and air convection for efficient heat dissipation.

    Can technical specifications be customized?

    Yes, parameters such as capacity, voltage ratio, tap range, and connection group can be customized based on project requirements.

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