A cast resin type transformer usually operates for 20 to 30 years. Proper maintenance can extend this lifespan up to 40 years. The SCB Series from Changzhou Guanghui Transformer Manufacturing Co.,Ltd. shows how advanced design increases reliability.

You will notice the main difference between cast coil and dry type transformers in their insulation and cooling systems. Cast coil transformers use resin to insulate windings. Dry type transformer models use air for cooling and do not need oil. Choosing the right transformer keeps your electrical system safe, efficient, and eco-friendly.

You want safe and reliable power equipment for your business or facility. Many electrical engineers pick a dry type transformer because it gives you strong fire safety, low maintenance, and works well indoors. You also see more companies choosing these transformers today.

In the sprawling landscape of electrical power distribution, transformers stand as the silent sentinels of modern civilization — converting voltages, channeling energy, and keeping the lights on in every corner of the globe. Among the many varieties available today, two titans dominate the conversation: the cast resin type transformer and the oil immersed transformer. These two technologies represent fundamentally different philosophies of engineering — one embraces the solidity of epoxy resin, the other harnesses the fluidity of insulating oil. Choosing between them is not merely a technical decision; it is a strategic one that impacts safety, cost, maintenance, environmental compliance, and operational reliability for decades to come.

In the realm of electrical power distribution and transformation, transformers play a pivotal role in ensuring the efficient and safe transfer of electrical energy across different voltage levels. Among the various types of transformers available, the dry type transformer has emerged as a preferred choice for numerous applications due to its unique characteristics and advantages. This article aims to provide a comprehensive overview of dry type transformers, exploring their definition, working principle, types, benefits, and applications.

The SZ20 16000/35 kV oil immersed on load tap changer provided by our company to the customer in Jingcun, Yushan Town, Kunshan City, Suzhou has successfully arrived at the project site yesterday. According to user selection, 35 kV on load voltage regulation can adapt to electricity scenarios with large voltage fluctuations, ensuring stable operation of the power supply voltage. This cooperation has helped the project establish a reputation for "efficient and reliable power grid supporting", and strengthened our company's market influence in the "Gongding Park Substation+Transformer" scenario.

The 2026 Jiangsu Provincial City Football League has officially announced a landmark sponsorship deal that is set to energize the competition and elevate the brand profile of one of China's most respected transformer manufacturers. Changzhou Guanghui Transformer Manufacturing Co., Ltd. — commonly known as Guanghui Transformer — has signed on as a title sponsor for the upcoming season, making it the league's premier partner for what promises to be one of the most exciting campaigns in the tournament's recent history. The sponsorship was unveiled during a press conference held at the company's headquarters in Changzhou, New North District, attended by league officials, municipal sports authorities, and Guanghui's senior leadership team. The partnership marks a significant step for both parties: the league gains a financially robust and technically sophisticated corporate partner, while Guanghui Transformer extends its brand visibility beyond the industrial sector into the vibrant world of grassroots and semi-professional football across Jiangsu Province.

In the rapidly evolving global energy landscape, oil immersed transformers remain indispensable components of power distribution systems. These transformers, known for their reliability, efficiency, and cost-effectiveness, are widely used in industrial facilities, commercial buildings, and utility grids. As the demand for sustainable and high-performance electrical solutions grows, the role of leading oil immersed transformer manufacturers becomes increasingly critical. This article explores the top five oil immersed transformer manufacturers in 2026, highlighting their strengths, product offerings, and contributions to the industry.

In modern power systems, the oil immersed transformer stands as a cornerstone technology, enabling efficient and reliable transmission and distribution of electrical energy. As a type of power transformer, it utilizes insulating oil as both a cooling medium and an electrical insulator, distinguishing itself from dry-type transformers that rely on air or other gases. This dual functionality allows oil immersed transformers to handle higher power capacities, operate under harsher environmental conditions, and maintain long-term stability, making them indispensable in industrial, commercial, and utility applications.