Description

As a professional 20kV Oil Immersed Transformer supplier and manufacturer, we provide medium voltage power transformers designed for stable operation, high efficiency, and long service life. This product page presents our export-ready 20kV oil type transformers, suitable for utility grids, industrial plants, and EPC power projects requiring reliable medium voltage distribution.

20KV Oil Immersed Transformer Description

Oil Immersed Transformer is a piece of power equipment cooled and insulated by insulating oil, typically used in high-power transmission and distribution systems. The insulating oil not only helps with thermal dissipation and temperature regulation, but also enhances the transformer’s electrical insulation performance and dielectric strength, thereby extending the power equipment’s lifespan and improving its operational reliability in high-voltage systems.

We specially designed the S11 series 20kV power transformer to meet the demands for high efficiency, energy conservation, low noise, and high reliability. Power companies and industrial users widely apply it in urban and rural distribution networks, industrial parks, and various high-load operation scenarios. This series of transformers is based on advanced technology and high-quality materials, featuring outstanding electrical performance and operational stability.

20KV Oil Immersed Transformer Series

20KV Oil Immersed Transformer picture

Oil-immersed transformers play a vital role in power systems. They deliver reliable performance across diverse applications. We design them primarily to achieve seamless voltage conversion and efficient power transmission, enabling them to handle the high current and large capacity demands of modern power networks. With our cutting-edge engineering, you can experience unmatched stability and reliability.

20KV Oil Immersed Transformer Details Images

1. Winding structure:

Our transformers adopt multi-layer cylindrical winding structures that enhance impact distribution, reduce magnetic leakage, and provide high mechanical strength and strong short-circuit resistance.

2. Excellent core design:

We optimize the core design to significantly reduce no-load losses, minimize no-load current, and ensure efficient operation.

3. Strengthen fastening and prevent loosening:

We apply precise fastening techniques and use self-locking anti-loosening nuts to ensure stability during transportation.

To enhance durability, our team adopts a non-suspended center structure that effectively absorbs vibration.

Meanwhile, the fastening components consistently ensure long-term operational integrity, even under demanding conditions.

4. Advanced vacuum processing:

We vacuum-dry the coils and cores and perform vacuum oil injection with filtration to minimize internal moisture, thereby improving transformer performance and extending service life.

5. Ingenious fuel tank design:

We use corrugated plates with a breathing function in the oil tank to compensate for oil volume changes caused by temperature fluctuations. This design eliminates the need for an oil conservator and effectively lowers the transformer’s height.

Applications of 20kV Oil Immersed Transformer

The 20kV oil transformer is widely applied in medium voltage power distribution projects that require high reliability, stable insulation performance, and long-term continuous operation. Thanks to its efficient oil cooling system and robust structural design, this transformer type is well suited for demanding industrial and utility environments.

Power Grid Renovation
In power grid upgrading and renovation projects, the oil immersed transformer provides reliable voltage regulation and stable power output. It is commonly used to replace aging transformers, improving grid efficiency while meeting modern safety and performance standards.

Ring Network Construction
For medium voltage ring network systems, the oil immersed transformer supports flexible power distribution and enhanced supply reliability. Its stable insulation performance and load adaptability make it suitable for ring main units and urban distribution networks.

Transformer Power Stations
The oil immersed transformer is a standard solution for transformer power stations, offering efficient heat dissipation and long service life. It ensures continuous operation under variable load conditions, making it ideal for substations serving industrial and commercial facilities.

Petrochemical Industry
In petrochemical plants and heavy industrial environments, the oil immersed transformer delivers safe and stable power for critical equipment. The oil-immersed design enhances insulation and cooling performance, supporting reliable operation in harsh and high-demand industrial conditions.

Certifications

Cooperation

Over the years, many partners from Europe and other regions have visited our factory.

Moreover, they discussed long-term cooperation plans directly with the Solarasia team.

As a result, these photos demonstrate more than just business relationships.

They also highlight the trust and recognition we’ve steadily earned from global clients.

Interested in real project stories or client feedback?

Click here to explore our global partnerships and success cases.

FAQ

What is a 20kV oil immersed transformer used for?

A 20kV oil immersed transformer is commonly used in medium voltage power distribution systems, including utility substations, industrial facilities, and infrastructure projects requiring stable and continuous power supply.

Is the 20kV oil power transformer suitable for outdoor installation?

Yes. The oil immersed design provides excellent insulation and cooling performance, making the 20kV transformer suitable for outdoor and harsh environmental conditions.

Can you customize the 20kV oil power transformer?

Yes. As a professional transformer manufacturer, we offer customized oil immersed transformers based on voltage class, capacity, cooling method, and project requirements.

Do you supply 20kV oil power transformers for export projects?

Yes. We supply export-standard 20kV oil power transformers with international packaging, testing reports, and technical documentation for overseas EPC and utility projects.

Get a Quote for 20kV Oil Immersed Transformer

Contact our team to receive technical specifications, pricing, and project support for your medium voltage transformer requirements.