Yawei Transformer offers three-phase oil-immersed distribution transformers that deliver reliable and efficient power solutions for industrial, utility, and infrastructure projects worldwide. Available in a wide range of capacities from 15 kVA, 50 kVA, 100 kVA, 200 kVA, 250 kVA, 400 kVA, 500 kVA, 750 kVA, 1000 kVA，1500 kVA, 2000 kVA up to 10,000 kVA, these transformers are designed to support everything from small commercial installations to large-scale utility grids. With primary voltage options ranging from 6 kV to 35 kV, they provide flexible, safe, and stable energy distribution for diverse applications, including factories, substations, renewable energy projects, and urban distribution networks.
Engineered for durability and long-term performance, Yawei Transformer’s oil-immersed distribution transformers feature high-quality insulation, efficient cooling, and robust construction for both indoor and outdoor installations. With customizable voltage configurations, scalable capacities, and compliance with global standards such as IEC, ANSI, IEEE, and GB/T, these transformers are ideal for B2B buyers seeking dependable, high-performance solutions for industrial facilities, utility networks, and large infrastructure projects. Whether you need a small 15 kVA unit or a high-capacity 10,000 kVA transformer, these products deliver reliable power and efficiency across a wide range of operational environments.
Three-Phase Oil-Immersed Distribution Transformers – Reliable Power Solutions for Utility, Industrial, and Infrastructure Applications
Our three-phase oil-immersed distribution transformers provide an essential role in modern power distribution, delivering reliable, high-performance solutions for utility networks, industrial operations, and large infrastructure projects. These transformers are engineered to operate efficiently in demanding environments and ensure a continuous, stable power supply for both urban and rural installations. With a broad capacity range from 15 kVA to 10,000 kVA and flexible voltage configurations from 6 kV to 35 kV, they are suitable for a wide variety of applications, including power grid expansions, substation installations, industrial power distribution, and renewable energy projects.
Designed with oil-filled insulation systems, these transformers provide superior cooling and durability. The oil-immersed design effectively dissipates heat, extends the lifespan of the equipment, and ensures reliable operation, even in extreme environmental conditions. Whether you're powering a factory, hospital, renewable energy farm, or a high-rise building, our three-phase transformers can be tailored to meet specific load, voltage, and operational requirements, making them a trusted choice for high-demand projects across the globe.
Key Features of Three-Phase Oil-Immersed Distribution Transformers
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Wide Capacity Range:Our three-phase oil-immersed distribution transformers are available in a wide range of capacities to suit various applications, including 15 kVA, 50 kVA, 100 kVA, 200 kVA, 250 kVA, 400 kVA, 500 kVA, 750 kVA, 1000 kVA, and up to 10,000 kVA. These transformers cater to small commercial buildings, industrial facilities, and large-scale utility grids. Whether you're working on a small-scale installation or a large infrastructure project, we provide flexible and reliable power solutions that meet diverse needs.
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Flexible Voltage Options: Supports primary voltages from 6 kV to 35 kV and secondary voltages of 230 V, 400 V, 480 V, 690 V, or custom voltage configurations tailored to your needs.
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Oil-Filled Insulation System: The oil-immersed design ensures efficient cooling, excellent insulation properties, and long-term reliability in heavy-duty applications.
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Enhanced Cooling Mechanism: Standard ONAN cooling with options for ONAF and OFAF systems, ensuring high efficiency even in high-temperature or heavy-load conditions.
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Compliant with International Standards: Fully compliant with global standards such as IEC, ANSI, IEEE, and GB/T, providing assurance of safety and performance.
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Durable Construction: Weather-resistant enclosures ensure that the transformer operates reliably in harsh environmental conditions and outdoor installations.
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Customization Options: Available in both single-phase and three-phase configurations, with customizable voltage and capacity to meet specific project needs.
Applications of Three-Phase Oil-Immersed Transformers
Utility Power Distribution:
Ideal for use in medium- and high-voltage distribution networks, our three-phase oil-immersed transformers are critical for providing stable electricity to urban grids, industrial parks, and rural areas. They are commonly used in substations, transformer stations, and other distribution points to ensure consistent voltage levels and power quality.
Industrial Power Systems:
From manufacturing plants to mining operations, and from chemical factories to steel mills, our transformers play a crucial role in ensuring smooth and uninterrupted power supply for heavy machinery and industrial operations. Their high-load capacity and reliable performance make them ideal for powering large-scale industrial facilities.
Renewable Energy Integration:
Our transformers are an essential component in the integration of renewable energy sources into the grid. Whether for solar power stations, wind farms, or hybrid energy systems, these oil-immersed transformers help convert and distribute energy efficiently, contributing to the global shift towards green and sustainable power solutions.
Critical Infrastructure Projects:
Used in the power systems of hospitals, data centers, metro systems, and airports, these transformers are vital for ensuring that essential services have access to reliable power. They support critical operations by maintaining a stable energy supply, especially in high-demand or mission-critical environments.
Customization Options for Your Specific Needs
At Yawei Transformer, we offer full customization for our three-phase oil-immersed distribution transformers, ensuring that each unit meets the unique requirements of your project:
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Capacity Flexibility: Transformers can be customized from 15 kVA to 10,000 kVA, ensuring the perfect fit for your specific application, whether it's for small-scale distribution or large-scale industrial use.
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Voltage Configuration: Whether you need 6 kV, 10 kV, 11 kV, 15 kV, 20 kV, or 35 kV, we can configure the primary and secondary voltages to match local grid requirements or specific project needs.
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Cooling Systems: Choose from ONAN (Oil Natural Air Natural) cooling, or for high-load or high-temperature applications, opt for ONAF/OFAF cooling systems to enhance transformer efficiency.
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Installation Adaptability: Whether for outdoor installations or substation applications, our transformers are designed to fit into diverse environments and meet the installation needs of various infrastructures.
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Smart Monitoring Solutions: Add remote monitoring devices and tap changers to optimize performance and maintain consistent power supply.
Maintenance and Operational Guidelines for Oil-Immersed Transformers
To ensure the long-lasting operation of your three-phase oil-immersed transformer, periodic maintenance is required. Key maintenance tasks include:
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Oil Quality Inspection: Regularly monitor oil levels and quality to ensure adequate dielectric strength and prevent contamination.
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Temperature Monitoring: Ensure that the transformer operates within safe temperature limits to avoid damage or overheating.
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Visual Inspections: Regular checks for physical damage, including oil leaks, bushing wear, or other signs of stress.
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Breather and Conservator Maintenance: Maintain and clean the oil conservator tank and breather system to ensure proper functioning.
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Cleaning & Servicing: Periodic cleaning of the transformer’s exterior, oil filtration, and regular servicing to maintain efficiency.
Real-World Applications and Case Studies
1. Power Distribution in Urban Areas – USA
In a major metropolitan area, 3500 kVA and 5000 kVA transformers were deployed to upgrade the city’s power grid. These transformers ensured stable power distribution to residential, commercial, and industrial users, preventing grid instability during peak demand periods.
2. Industrial Facility Expansion – Germany
A 5000 kVA transformer was installed to support the expansion of a large steel mill in Germany. The transformer ensured a steady supply of medium-voltage power to the factory’s high-load production lines, maintaining optimal production efficiency and reducing downtime.
3. Renewable Energy Integration – Spain
In Spain, 3000 kVA transformers were installed at a solar energy farm to facilitate the integration of clean energy into the national grid. These oil-immersed transformers played a key role in converting solar power into grid-compatible energy, contributing to Spain’s renewable energy goals.
4. Critical Infrastructure Support – Saudi Arabia
In Saudi Arabia, 5000 kVA transformers were used to power critical infrastructure in airports and metro stations, ensuring continuous power supply for high-demand services. These transformers are vital for supporting operations in sectors where uninterrupted power is essential.
Why Choose Yawei’s Three-Phase Oil-Immersed Transformers?
Our three-phase oil-immersed distribution transformers are a perfect fit for projects requiring high-efficiency, reliable, and customizable power solutions. With a capacity range from 15 kVA to 10,000 kVA, and voltages from 6 kV to 35 kV, these transformers provide unmatched flexibility to meet the demands of utility grids, industrial facilities, substation installations, and renewable energy systems.
Choose Yawei Transformer for:
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Factory-direct pricing and OEM options
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Customizable solutions tailored to your project’s specific needs
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High-quality, durable construction and long-term reliability
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Global compliance with industry standards (IEC, ANSI, IEEE, GB/T)
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Expert technical support and maintenance services
If you are looking for reliable, high-capacity, and customizable transformers for your utility, industrial, or infrastructure project, Yawei Transformer is your trusted partner for three-phase oil-immersed distribution transformers.
Contact us today for further information or to discuss your specific transformer requirements.