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High-Reliability Cast Resin 35kV Dry-Type Power Transformer for Heavy-Duty Medium Voltage Distribution

The 35kV Dry-Type Power Transformer is a high-performance cast resin transformer designed for medium-voltage power distribution systems. It features advanced epoxy insulation, low-loss core technology, and strong thermal stability. With excellent fire resistance and maintenance-free operation, it is widely used in substations, industrial plants, and infrastructure projects requiring safe and reliable power supply.

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    product details

    Product Parameter

    Parameter

    Specification
    Rated Voltage 35kV
    Rated Capacity 1000kVA – 25000kVA
    Secondary Voltage 6kV / 10kV / 11kV
    Frequency 50Hz
    Cooling Method AN / AF (Air Natural / Air Forced)
    Insulation Class F / H Class
    Winding Material Copper / Aluminum
    Impedance Voltage 6% – 10%
    Temperature Rise Limit ≤100K
    Partial Discharge ≤10 pC
    Dielectric Strength High voltage withstand capability
    Standards IEC 60076 / GB1094 / GB/T6451

    Product Applications

    Medium-Voltage Substations and Utility Distribution Networks
    The 35kV dry-type power transformer is widely used in utility substations for stepping down voltage from 35kV to 6–11kV distribution levels. It supports stable power transmission for urban and rural grids. With capacity up to 25MVA, it ensures efficient energy delivery and reduces transmission losses by approximately 8%–12%, improving overall grid reliability and operational safety.
    Heavy Industrial Manufacturing and Continuous Load Systems
    This transformer is ideal for heavy industries such as metallurgy, cement production, mining operations, and petrochemical plants. It is designed to handle continuous high-load conditions and can support overloads up to 120% capacity for short durations. Its strong thermal stability ensures consistent performance in harsh environments with high electrical demand and frequent load fluctuations.
    Infrastructure Projects and Renewable Energy Systems
    The transformer is widely applied in infrastructure projects such as airports, railway systems, ports, and renewable energy plants including wind and solar farms. It provides stable voltage conversion under variable load conditions. Designed for operation in environments ranging from -40°C to +45°C, it ensures reliable performance in outdoor and remote installations with demanding power requirements.

    Product Advantages

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    Stable Industrial Performance
    Supports reliable and continuous electrical operation in industrial environments. 
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    Durable Finished Construction
    Compact transformer structure provides reliable long-term operating stability. 
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    Reliable Factory Production
    Standardized manufacturing procedures ensure stable product quality. 
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    Operational Safety Design
    Durable insulation and finished structure support safe operation. 
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    Efficient Daily Usage
    Stable finished transformer design supports smooth and dependable daily operation. 
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    Broad Specification Coverage
    Available in multiple product specifications for different industrial applications.

    Key Benefits

    The 35kV Dry-Type Power Transformer is a safe, efficient, and durable solution for modern medium-voltage distribution systems. Its cast resin insulation, strong overload capacity, and low-loss performance make it ideal for substations, industrial facilities, and infrastructure applications.

    With long service life, high safety standards, and maintenance-free operation, it provides a dependable choice for demanding power distribution environments.

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    FAQ

    1. What makes a 35kV dry-type transformer safer than oil-immersed types?

    It uses cast resin insulation instead of oil, eliminating fire and leakage risks.

    2. Can it operate under continuous heavy load conditions?

    Yes, it is designed for continuous operation and can handle short-term overloads up to 120%.

    3. Is it suitable for indoor installation only?

    Yes, it is mainly designed for indoor use such as substations and industrial buildings.

    4. How does it handle temperature rise during operation?

    It is engineered with controlled thermal limits, typically keeping temperature rise within 100K.

    5. What industries commonly use this transformer?

    It is widely used in utilities, heavy industry, infrastructure, and renewable energy projects.

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