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10 Leading oil immersed transformer Suppliers in China

Apr 17, 2026Leave a message

Introduction to Oil Immersed Transformers

Oil - immersed transformers are a crucial component in the power transmission and distribution system. They work on the principle of electromagnetic induction to transfer electrical energy between circuits at different voltage levels. The core of the transformer is made of magnetic materials, and it is immersed in insulating oil. This oil serves multiple functions: it provides electrical insulation, helps in cooling the transformer by dissipating heat generated during operation, and protects the internal components from oxidation and moisture.


Oil - immersed transformers are widely used in various industries such as power generation, industrial manufacturing, and commercial buildings due to their high efficiency, reliability, and long service life. They come in different sizes and capacities to meet the diverse power requirements.


10 Leading Suppliers

1. Zhejiang Lvma Electric Co., Ltd.

Zhejiang Lvma Electric Co., Ltd. is a prominent player in the oil - immersed transformer industry. It is committed to the research, development, production, and sales of high - quality transformers. The company has a modern production base equipped with advanced manufacturing equipment and a professional R & D team.


Features in Oil Immersed Transformers


  • High - quality materials: Zhejiang Lvma Electric uses high - grade silicon steel sheets for the transformer core, which effectively reduces core loss and improves energy efficiency. The insulating oil used is of high - purity and has excellent insulation and cooling properties, ensuring the long - term stable operation of the transformer.
  • Customized designs: The company can customize oil - immersed transformers according to the specific requirements of customers, such as different voltage levels, capacities, and installation environments. This flexibility allows it to meet the needs of a wide range of industries.
  • Stringent quality control: From the procurement of raw materials to the final product inspection, every step in the production process is strictly monitored. The company adheres to international quality standards, ensuring that each transformer it produces is of top - notch quality.


Advantages


  • Technical expertise: With years of experience in the industry, the company has accumulated rich technical knowledge and practical experience. Its R & D team is constantly working on improving product performance and developing new products to keep up with the market demand.
  • Good after - sales service: Zhejiang Lvma Electric provides comprehensive after - sales service, including installation guidance, maintenance training, and timely troubleshooting. This gives customers peace of mind during the use of their transformers.
  • Competitive pricing: While maintaining high - quality products, the company offers competitive prices. It has optimized its production process and supply chain management to reduce costs, which is reflected in the price of its products.


Website: https://www.lm-transformer.com/


2. Shandong Taikai Transformer Co., Ltd.

Shandong Taikai Transformer Co., Ltd. is a large - scale enterprise specializing in the production of power transformers, including oil - immersed transformers. It has a long - standing history in the industry and is well - known for its technological strength and product quality.


The company's production facilities cover a large area and are equipped with state - of - the - art production lines. It has a complete set of quality control systems, from the initial design to the final delivery of products.


Features in Oil Immersed Transformers


  • Advanced cooling technology: Shandong Taikai Transformer has developed advanced cooling systems for its oil - immersed transformers. These systems can effectively dissipate heat, ensuring that the transformer operates within a safe temperature range even under high - load conditions.
  • Low noise operation: Through continuous research and development, the company has managed to reduce the noise level of its transformers. This is especially important for applications in residential areas or noise - sensitive environments.
  • High - voltage capacity: The company is capable of producing oil - immersed transformers with high - voltage levels, which are suitable for large - scale power transmission and distribution projects.


Advantages


  • Strong R & D capabilities: It invests a significant amount of resources in research and development. The R & D team is composed of experienced engineers and technicians who are constantly exploring new technologies and materials to improve the performance of transformers.
  • Good brand reputation: Over the years, Shandong Taikai Transformer has established a good brand reputation in the market. Its products are widely recognized for their reliability and quality, which gives it a competitive edge over its peers.
  • Comprehensive product portfolio: In addition to oil - immersed transformers, the company also produces other types of transformers and related electrical equipment. This allows it to provide one - stop solutions for its customers.


3. Baoding Tianwei Group Co., Ltd.

Baoding Tianwei Group Co., Ltd. is a well - established enterprise in the electrical equipment manufacturing industry. It has a long - term focus on the production of high - quality transformers, including oil - immersed transformers.


The company has a large - scale production base and a complete industrial chain. It is involved in every aspect of the transformer production process, from the production of key components to the final assembly of products.


Features in Oil Immersed Transformers


  • High - precision manufacturing: Baoding Tianwei Group uses advanced manufacturing techniques to ensure high - precision production of oil - immersed transformers. This results in transformers with stable performance and high reliability.
  • Excellent insulation performance: The company pays great attention to the insulation design and material selection of its transformers. The insulating materials used have excellent electrical and thermal properties, which can effectively prevent electrical breakdown and ensure the safe operation of the transformer.
  • Long service life: Through continuous improvement of product design and manufacturing processes, the company's oil - immersed transformers have a long service life. This reduces the replacement cost for customers in the long run.


Advantages


  • Rich industry experience: With decades of experience in the industry, Baoding Tianwei Group has a deep understanding of the market and customer needs. It can quickly adapt to market changes and develop products that meet the requirements of different customers.
  • Strong production capacity: The company has a large - scale production base and advanced production equipment, which enables it to produce a large number of transformers in a short period of time. This is beneficial for large - scale projects with tight delivery schedules.
  • Good cooperation with research institutions: Baoding Tianwei Group has established good cooperative relationships with many domestic and international research institutions. This allows it to keep up with the latest technological trends and introduce advanced technologies into its product development.


4. TBEA Shenyang Transformer Group Co., Ltd.

TBEA Shenyang Transformer Group Co., Ltd. is a leading enterprise in the transformer manufacturing industry. It is known for its innovative technology and high - quality products.


The company has a world - class R & D center and production base. It is committed to the development and production of high - end transformers, including oil - immersed transformers.


Features in Oil Immersed Transformers


  • Intelligent design: TBEA Shenyang Transformer Group incorporates intelligent technology into its oil - immersed transformers. These transformers can monitor their own operating status in real - time, such as temperature, voltage, and current, and send the data to the control center. This allows for timely maintenance and fault prevention.
  • High - efficiency energy conversion: The company's transformers are designed with high - efficiency energy conversion in mind. They can reduce energy loss during the power transmission process, which is in line with the global trend of energy conservation.
  • Robust structure: The oil - immersed transformers produced by TBEA Shenyang Transformer Group have a robust structure. They are designed to withstand harsh environmental conditions, such as high - temperature, high - humidity, and seismic areas.


Advantages


  • Global market presence: The company has a wide global market presence. Its products are exported to many countries and regions around the world, which reflects the high quality and international recognition of its products.
  • Continuous innovation: TBEA Shenyang Transformer Group invests heavily in research and development to promote continuous innovation. It is constantly exploring new technologies and materials to improve the performance and competitiveness of its products.
  • Professional after - sales service network: The company has established a professional after - sales service network around the world. It can provide timely and effective after - sales service to its customers, ensuring the normal operation of their transformers.


5. China XD Group Co., Ltd.

China XD Group Co., Ltd. is a large - state - owned enterprise in the electrical equipment manufacturing industry. It has a long history and a strong technical foundation in the production of transformers, including oil - immersed transformers.


The company has a complete set of R & D, production, and testing facilities. It adheres to strict quality management systems and international standards in its production process.


Features in Oil Immersed Transformers


  • High - voltage and large - capacity design: China XD Group is capable of producing oil - immersed transformers with extremely high - voltage levels and large capacities. These transformers are suitable for large - scale power grid projects and heavy - industry applications.
  • Advanced insulation technology: The company uses advanced insulation technology in its oil - immersed transformers. This technology can effectively prevent partial discharge and improve the insulation performance of the transformer, ensuring its long - term stable operation.
  • Good environmental adaptability: The transformers produced by China XD Group are designed to adapt to different environmental conditions. They can operate normally in extreme temperature, humidity, and altitude conditions.


Advantages


  • State - owned enterprise advantages: As a large - state - owned enterprise, China XD Group has strong financial support and policy advantages. It can invest more resources in research and development and large - scale production.
  • Comprehensive technical support: The company has a large number of technical experts and engineers. It can provide comprehensive technical support to its customers, including product design, installation, and maintenance.
  • Good social responsibility: China XD Group attaches great importance to social responsibility. It is committed to the development of green and energy - efficient products, which is in line with the sustainable development strategy of the country.


6. Jiangsu Huapeng Transformer Co., Ltd.

Jiangsu Huapeng Transformer Co., Ltd. is a well - known transformer manufacturer in China. It has been focusing on the production of various types of transformers, including oil - immersed transformers, for many years.


The company has a modern production base and a professional management team. It emphasizes product quality and customer service.


Features in Oil Immersed Transformers


  • Fine - tuned design: Jiangsu Huapeng Transformer conducts fine - tuned design for its oil - immersed transformers according to different application scenarios. This ensures that the transformers can meet the specific requirements of customers in different industries.
  • Good heat dissipation performance: The company's transformers are designed with efficient heat dissipation structures. The oil circulation system and radiator design can effectively dissipate heat, maintaining the normal operating temperature of the transformer.
  • Low partial discharge: Through strict quality control and advanced manufacturing processes, the company's oil - immersed transformers have low partial discharge levels. This helps to improve the reliability and service life of the transformer.


Advantages


  • Customer - oriented service: Jiangsu Huapeng Transformer takes customer satisfaction as its top priority. It provides personalized service to each customer, from product consultation to after - sales service.
  • Cost - effective products: The company has optimized its production process and supply chain management to reduce production costs. This allows it to offer cost - effective oil - immersed transformers to its customers.
  • Good market reputation: Over the years, the company has established a good market reputation for its high - quality products and excellent service. It has a large number of loyal customers in both domestic and international markets.


7. SGB - SMIT Transformers (China) Co., Ltd.

SGB - SMIT Transformers (China) Co., Ltd. is a joint - venture enterprise in the transformer manufacturing industry. It combines the advanced technology and management experience of its parent companies.


The company has a modern production base and a strict quality control system. It is committed to providing high - quality oil - immersed transformers to the market.


Features in Oil Immersed Transformers


  • European - style design and technology: SGB - SMIT Transformers (China) introduces European - style design and advanced technology in its oil - immersed transformers. These transformers have excellent performance and high reliability.
  • High - quality components: The company uses high - quality components in the production of its oil - immersed transformers. This ensures the overall quality and performance of the transformers.
  • Compliance with international standards: The company's products comply with international standards such as IEC. This makes its products more competitive in the international market.


Advantages


  • International cooperation experience: As a joint - venture enterprise, SGB - SMIT Transformers (China) has rich international cooperation experience. It can learn from the advanced management and technology of its parent companies and apply them to its production.
  • Good product quality and brand image: The company's products are well - known for their high quality and reliable performance. It has a good brand image in the market, which helps it to attract more customers.
  • Professional technical support: SGB - SMIT Transformers (China) has a professional technical team that can provide comprehensive technical support to its customers, from product selection to after - sales service.


8. Siemens Transformer (Wuhan) Co., Ltd.

Siemens Transformer (Wuhan) Co., Ltd. is a subsidiary of the well - known German multinational company Siemens. It inherits Siemens' advanced technology and strict quality management system.


The company has a modern production base and a high - level R & D team. It focuses on the production of high - end oil - immersed transformers.


Features in Oil Immersed Transformers


  • Cutting - edge technology: Siemens Transformer (Wuhan) uses cutting - edge technology in its oil - immersed transformers. It continuously introduces new technologies and materials to improve the performance of its products, such as advanced insulation materials and intelligent control systems.
  • High - precision manufacturing process: The company adheres to a high - precision manufacturing process. Each transformer is manufactured with strict quality control, ensuring its high - quality and stable performance.
  • Energy - efficient design: Siemens Transformer (Wuhan)'s oil - immersed transformers are designed with energy - efficient features. They can reduce energy consumption during operation, which is in line with the global trend of sustainable development.


Advantages


  • Global brand influence: As a subsidiary of Siemens, the company benefits from the global brand influence of Siemens. Its products are widely recognized and trusted by customers around the world.
  • Rich R & D experience: Siemens has a long - standing R & D history in the transformer field. The R & D team of Siemens Transformer (Wuhan) can draw on this rich experience to develop innovative products.
  • Comprehensive service system: The company has a comprehensive service system that includes pre - sales consultation, in - sales support, and after - sales service. It can provide customers with a full - range of services.


9. ABB Transformer (China) Co., Ltd.

ABB Transformer (China) Co., Ltd. is a part of the global ABB Group, which is a leading technology company in the power and automation industries.


The company has a state - of - the - art production base in China and a high - quality workforce. It is dedicated to the production of high - performance oil - immersed transformers.


Features in Oil Immersed Transformers


  • Integrated design concept: ABB Transformer (China) adopts an integrated design concept for its oil - immersed transformers. This includes the integration of electrical, mechanical, and thermal design, which ensures the overall performance and reliability of the transformer.
  • Advanced monitoring and diagnostic systems: The company's transformers are equipped with advanced monitoring and diagnostic systems. These systems can detect potential faults in advance and provide early warnings, which helps to reduce maintenance costs and improve the availability of the transformer.
  • Customized solutions for different industries: ABB Transformer (China) can provide customized solutions for different industries, such as power generation, industrial, and commercial sectors. This flexibility allows it to meet the specific needs of each customer.


Advantages


  • Global technology leadership: ABB is a global leader in technology. The company can leverage ABB's global R & D resources and technological achievements to develop and produce high - end oil - immersed transformers.
  • Good project implementation experience: ABB Transformer (China) has rich project implementation experience. It can handle large - scale and complex transformer projects, from project planning to installation and commissioning.
  • Strong after - sales service capabilities: The company has a strong after - sales service team. It can provide timely and effective after - sales service to its customers, ensuring the long - term stable operation of their transformers.


10. Xi'an XD Transformer Co., Ltd.

Xi'an XD Transformer Co., Ltd. is a key enterprise in the transformer manufacturing industry under China XD Group. It has a long - standing reputation for its high - quality products and strong technical strength.


The company has a large - scale production base and a complete set of production and testing equipment. It is committed to the research, development, and production of high - voltage and ultra - high - voltage oil - immersed transformers.


Features in Oil Immersed Transformers


  • High - voltage and ultra - high - voltage technology: Xi'an XD Transformer is at the forefront of high - voltage and ultra - high - voltage technology in the oil - immersed transformer field. It can produce transformers with extremely high - voltage levels, which are suitable for large - scale power grid construction.
  • Advanced insulation and cooling technology: The company uses advanced insulation and cooling technology in its transformers. This helps to improve the performance and reliability of the transformers, especially under high - load and long - term operation conditions.
  • Reliable structure design: The oil - immersed transformers produced by Xi'an XD Transformer have a reliable structure design. They can withstand various mechanical stresses and environmental impacts, ensuring their stable operation in different environments.


Advantages


  • In - depth technical knowledge: As a part of China XD Group, Xi'an XD Transformer has in - depth technical knowledge in the transformer field. It can continuously improve its product performance through technological innovation.
  • Large - scale production capacity: The company has a large - scale production capacity, which enables it to meet the large - scale demand for oil - immersed transformers in the market.
  • Good cooperation with the power grid industry: Xi'an XD Transformer has established good cooperative relationships with the power grid industry. It can understand the latest requirements of the power grid and develop products that meet these requirements.


Summary

The 10 leading oil - immersed transformer suppliers in China mentioned above all have their own unique features and advantages. They cover a wide range of aspects, from technological innovation to product quality control, from customer service to market influence. Zhejiang Lvma Electric Co., Ltd. offers customized solutions and competitive pricing. Shandong Taikai Transformer Co., Ltd. is known for its advanced cooling technology and low - noise operation. Baoding Tianwei Group Co., Ltd. has rich industry experience and strong production capacity. TBEA Shenyang Transformer Group Co., Ltd. leads in intelligent design and global market presence. China XD Group Co., Ltd. benefits from state - owned enterprise advantages and high - voltage technology. Jiangsu Huapeng Transformer Co., Ltd. focuses on customer - oriented service and cost - effective products. SGB - SMIT Transformers (China) Co., Ltd. combines European - style design with international standards. Siemens Transformer (Wuhan) Co., Ltd. inherits Siemens' advanced technology and global brand influence. ABB Transformer (China) Co., Ltd. provides integrated solutions and advanced monitoring systems. Xi'an XD Transformer Co., Ltd. excels in high - voltage technology and cooperation with the power grid industry.


These suppliers play a crucial role in the development of the oil - immersed transformer industry in China and even in the global market. They not only meet the domestic demand for power transmission and distribution but also contribute to the international market with their high - quality products and services. As the power industry continues to develop, these suppliers are expected to further innovate and improve their products to meet the increasing requirements of the market.


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