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High-Reliability Low-Noise 35kV Class Distribution Transformer from China Suppliers and Factory for Heavy-Duty Power Networks

The 35kV Class Distribution Transformer is a durable oil-immersed power transformer, specifically designed for medium-voltage distribution systems in China. As one of the leading suppliers in the industry, our factory utilizes advanced silicon steel cores, reinforced clamping structures, and optimized insulation to ensure low loss, minimal noise, and enhanced short-circuit resistance. This transformer provides stable, long-term performance, making it ideal for utility grids, industrial applications, and large-scale infrastructure projects. Trust our factory to meet your distribution transformer needs with reliability and efficiency
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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 / Class H
    Impedance Voltage 7% – 10%
    No-Load Loss Optimized low-loss core design
    Load Loss (75℃) High-efficiency performance
    Short-Circuit Strength Reinforced mechanical structure
    Standards IEC 60076 / GB1094 / GB/T6451 / GB20052

    Product Applications

    Utility Distribution Networks and Power Substations
    The 35kV Class Distribution Transformer is widely used in utility substations for voltage conversion from 35kV to 6–11kV. With capacity options up to 31.5MVA, it supports large-scale power transmission and distribution systems. Its low-loss design can reduce overall energy loss by approximately 10%–15%, ensuring improved grid efficiency and stable electricity supply across urban and rural areas.
    Heavy Industrial Facilities and Continuous Load Environments
    This transformer is ideal for industries such as steel production, mining, cement plants, and petrochemical processing. It is designed to operate under continuous heavy loads and can handle short-term overloads of up to 120% capacity. Its high short-circuit resistance ensures reliable performance and protects equipment during sudden electrical disturbances in demanding industrial environments.
    Infrastructure Projects and Renewable Energy Integration
    The transformer is widely applied in infrastructure projects including airports, railways, ports, and renewable energy installations such as solar and wind farms. It provides stable voltage output under fluctuating loads. Designed to operate within a temperature range of -40°C to +45°C, it ensures reliable outdoor performance in diverse environmental conditions and remote locations.

    Product Advantages

    Low-Loss Core Technology
    Low-Loss Core Technology
    Improves energy efficiency and reduces operating costs
    High Structural Strength
    High Structural Strength
    Reinforced frame enhances durability and transport resistance
    Excellent Short-Circuit Resistance
    Excellent Short-Circuit Resistance
    Ensures stability under fault conditions
    Low Noise Design
    Low Noise Design
    Minimizes vibration and noise for improved operational environment
    High Capacity Capability
    High Capacity Capability
    Supports up to 31.5MVA for large-scale applications
    Long Service Life
    Long Service Life
    Designed for over 30 years of reliable performance

    Key Benefits

    The 35kV Class Distribution Transformer is a durable, efficient, and high-performance unit designed for medium-voltage power distribution systems. Its advanced design, strong mechanical structure, and low-loss operation make it suitable for utility grids, industrial facilities, and infrastructure projects.

    With long service life, stable performance, and compliance with international standards, it provides a reliable and cost-effective option for demanding power distribution applications.

    Key Benefits

    FAQ

    Q1. What makes this transformer suitable for high-load environments?

    Its reinforced structure and high thermal capacity allow it to operate continuously under heavy electrical loads.

    Q2. How does it perform in terms of noise levels?

    It features a low-noise design that minimizes vibration and ensures quieter operation compared to conventional transformers.

    Q3. What cooling methods are supported?

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

    Q4. Can it be customized for specific voltage requirements?

    Yes, voltage levels and tap ranges can be customized based on project specifications.

    Q5. What ensures long-term reliability?

    High-quality materials, optimized insulation systems, and advanced manufacturing processes contribute to long-term durability.

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