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Robust High-Capacity 35kV Class Distribution Transformer for Utility-Scale Power Distribution

The 35kV Class Distribution Transformer is a high-capacity oil-immersed transformer engineered for medium-voltage distribution networks. Designed with advanced core materials, reinforced structure, and optimized insulation, it delivers low losses, low noise, and strong short-circuit resistance, ensuring long-term, stable operation in utility, industrial, and infrastructure applications.

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    product details

    Product Parameter

    Parameter

    Specification
    Rated Voltage 35kV
    Rated Capacity 3150kVA – 31500kVA
    Secondary Voltage 6.3kV / 6.6kV / 10.5kV / 11kV
    Frequency 50Hz
    Tap Range ±5% or ±2×2.5%
    Connection Group Yd11 / YNd11
    Cooling Method ONAN / ONAF
    Insulation Class Class F / H
    Impedance Voltage 7% – 10%
    No-Load Loss Optimized low-loss performance
    Load Loss (75℃) High-efficiency design
    Short-Circuit Strength Reinforced mechanical structure
    Standards IEC 60076 / GB1094 / GB/T6451 / GB20052

    Product Applications

    Utility Grid Expansion and Power Distribution Networks
    The 35kV Class Distribution Transformer is widely used in utility grid expansion projects and regional substations. It efficiently steps down voltage from 35kV to medium voltage levels (6–11kV), supporting stable transmission across urban and rural networks. With capacities up to 31.5MVA, it helps utilities reduce energy losses by approximately 10%–15%, improving overall grid efficiency and reliability.
    High-Load Industrial Facilities and Manufacturing Plants
    This transformer is ideal for heavy-duty industrial applications such as steel plants, mining operations, and petrochemical industries. It is designed to operate continuously under high-load conditions and can handle short-term overloads of up to 120% capacity. Its strong short-circuit resistance ensures system stability, even during sudden load changes or fault conditions in demanding production environments.
    Large Infrastructure and Renewable Energy Integration Projects
    The transformer is extensively used in large infrastructure projects such as airports, railways, ports, and renewable energy systems like wind farms and solar power plants. It provides stable voltage output under fluctuating loads and environmental conditions. Designed to operate in temperatures ranging from -40°C to +45°C, it ensures reliable performance in outdoor and remote installations.

    Product Advantages

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    High-Efficiency Core Design
    Reduces no-load loss and improves overall energy performance 
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    Reinforced Structural Framework
    Enhances mechanical strength and resistance to transport impact 
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    Superior Short-Circuit Resistance
    Designed to withstand electrical and mechanical stresses 
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    Low Noise Operation
    Optimized structure minimizes vibration and acoustic levels 
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    Wide Capacity Range
    Supports up to 31.5MVA, suitable for large-scale power systems 
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    Extended Service Life
    Designed for over 30 years of reliable operation 

    Key Benefits

    The 35kV Class Distribution Transformer is a reliable, high-capacity, and energy-efficient power distribution unit designed for modern medium-voltage networks. Its advanced engineering, strong durability, and low-loss performance make it suitable for utility grids, industrial facilities, and infrastructure projects.

    With long operational life, stable performance, and compliance with international standards, it provides a dependable and cost-effective choice for demanding power distribution applications.

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    FAQ

    1. What voltage levels can this transformer handle on the secondary side?

    It typically supports secondary voltages such as 6.3kV, 6.6kV, 10.5kV, and 11kV depending on system requirements.

    2. How does this transformer perform under overload conditions?

    It can handle short-term overloads up to around 120% while maintaining operational stability.

    3. What industries typically require 35kV transformers?

    Industries such as utilities, mining, heavy manufacturing, and infrastructure projects commonly use this voltage class.

    4. Can it operate in extreme environmental conditions?

    Yes, it is designed to perform reliably in a wide temperature range and harsh outdoor environments.

    5. What design features improve reliability?

    Reinforced clamping structure, high-quality insulation materials, and optimized core design all contribute to enhanced reliability and durability.

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