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Ultra-Durable Low-Loss 35kV Class Distribution Transformer for High-Demand Power Networks

The 35kV Class Distribution Transformer is a high-performance oil-immersed unit designed for medium-voltage distribution systems. Built with advanced core materials and a reinforced structural frame, it delivers low energy loss, low noise, and excellent short-circuit resistance. It ensures reliable, long-term operation for utility grids, industrial facilities, and large infrastructure projects.

    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 / Class H
    Impedance Voltage 7% – 10%
    No-Load Loss Low-loss silicon steel core design
    Load Loss (75℃) Optimized efficiency performance
    Short-Circuit Strength High mechanical stability
    Standards IEC 60076 / GB1094 / GB/T6451 / GB20052

    Product Applications

    Regional Power Grid and Substation Distribution
    The 35kV Class Distribution Transformer is extensively used in regional substations and power distribution networks. It steps down voltage from 35kV to 6–11kV, ensuring efficient transmission to end users. With a maximum capacity of 31.5MVA, it supports large-scale grid operations and reduces energy losses by approximately 10%–15%, improving the overall efficiency and reliability of utility systems.
    Heavy Industry and Continuous Production Facilities
    This transformer is ideal for heavy industrial sectors such as metallurgy, mining, petrochemical plants, and large-scale manufacturing. It operates reliably under continuous high-load conditions and can tolerate short-term overloads of up to 120%, ensuring uninterrupted production. Its strong short-circuit resistance helps protect equipment and maintain stable operations even under fault conditions.
    Infrastructure Projects and Renewable Energy Systems
    The transformer is widely used in infrastructure projects including airports, railways, ports, and renewable energy plants such as wind and solar farms. It provides stable voltage output under fluctuating loads and environmental conditions. Designed to operate in temperature ranges from -40°C to +45°C, it ensures reliable performance in outdoor and remote installations.

    Product Advantages

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    Low-Loss Core Technology
    Reduces no-load loss and improves overall energy efficiency 
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    Reinforced Structural Design
    Enhances durability and resistance to transport and operational stress 
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    High Short-Circuit Resistance
    Ensures stability under electrical fault conditions 
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    Low Noise Operation
    Optimized design reduces vibration and acoustic emissions 
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    Wide Capacity Range
    Supports up to 31.5MVA, suitable for large-scale applications
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    Long Service Life
    Designed for more than 30 years of stable operation 

    Key Benefits

    The 35kV Class Distribution Transformer is a robust, efficient, and reliable power distribution unit designed for modern medium-voltage networks. Its advanced design, strong mechanical structure, and low-loss performance make it suitable for utility grids, industrial operations, and infrastructure projects.

    With long service life, high efficiency, and compliance with international standards, it offers a dependable and cost-effective choice for high-demand power distribution systems.

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    FAQ

    1. What makes a 35kV transformer suitable for large-scale distribution?

    Its high voltage rating and large capacity allow it to efficiently handle medium-voltage transmission over long distances.

    2. Can this transformer handle sudden load changes?

    Yes, it is designed to manage load fluctuations and maintain stable performance under varying demand conditions.

    3. What cooling methods are available for this transformer?

    It supports both natural oil cooling (ONAN) and forced air cooling (ONAF) depending on operational needs.

    4. Is it suitable for renewable energy applications?

    Yes, it is commonly used in wind and solar power systems to stabilize and transmit generated energy.

    5. What contributes to its long service life?

    High-quality insulation materials, robust mechanical design, and optimized thermal performance all extend its lifespan.

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