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A Brief Introduction on the Causes of Overheating in Transformers

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  There are many reasons for excessively high transformer temperatures, which could be due to internal transformer malfunctions or external factors. One: Internal Transformer Malfunctions When a transformer operates, the temperature of each part tends to stabilize when heat generation and dissipation reach equilibrium. If, under the same conditions, the oil temperature is more than 10°C higher than usual, or the temperature continues to rise despite a constant load, it can be considered that an internal transformer malfunction has occurred. 1. Poor Tap Changer Contact During operation, insufficient contact pressure or contamination at the tap changer’s contact points can increase contact resistance. Increased contact resistance leads to increased contact temperature and overheating. This is especially true after tap changing and during transformer overload operation, where poor tap changer contact and overheating are more likely. Poor tap changer contact can be ide...
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The Development Path of Silicon Steel Sheets in China

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  The silicon steel sheet industry is undergoing a significant transformation towards high-end products. This trend is driven by technological advancements, policy guidance, and market demand. The following analysis examines its current status and future prospects from key dimensions. The core drivers of high-end transformation include technological breakthroughs, policy support, and upgraded market demand. At the technological level, domestic enterprises have increased their high-end product capacity through intelligent equipment upgrades and process optimization. For example, Taiyuan Iron & Steel Group launched new oriented electrical silicon steel and cold-rolled non-oriented silicon steel products in December 2025, and released its exclusive brand “TISCORE,” marking progress in the technological independence and widespread application of domestically produced high-end silicon steel. Meanwhile, Baosteel, Shougang Group, and other enterprises have ...
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A Brief Discussion on the Application of Silicon Steel Sheets in Transformers

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  Silicon steel sheets , also known as silicon steel plates, are an indispensable magnetic material in the electrical engineering field. They are refined from electrical silicon steel with a silicon content of 0.8%-4.8% through hot and cold rolling processes, and are typically no more than 1 mm thick, hence the name “thin sheet.” Broadly speaking, silicon steel sheets belong to the category of sheet metal, but they are classified as a separate category due to their unique electrical properties and wide range of applications. Whether in the power, telecommunications, or instrumentation industries, silicon steel sheets play a crucial role, serving as a key material for ensuring the efficient and stable operation of equipment. Most commonly used transformer cores are made of silicon steel sheets. Silicon steel is a type of steel containing silicon, with its silicon content controlled within the range of 0.8% to 4.8%. The primary reason for choosing silicon steel as the ...
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Market Research and Development Trends of Oriented Silicon Steel Industry

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  Analysis and Forecast of Downstream Sub-market Applications in the Grain-Oriented Silicon Steel Industry China’s steel industry has entered a stage of fierce competition for existing market share. In 2023, crude steel production reached 1.005 billion tons, and steel product output reached 1.4 billion tons, representing a year-on-year increase of 1.1%. Driven by technological and industrial revolutions, the steel industry is accelerating structural upgrading and developing towards mid-to-high-end products. On the consumption side, demand for construction steel has declined, while demand for high-quality special steels such as medium and heavy plates, automotive steel sheets, and silicon steel has increased. High-end steel will become the main focus of future development, and grain-oriented silicon steel is expected to become a key development area for the steel industry. Analysis of the supply situation of my country’s grain-oriented silicon steel industry ...
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Innovation-Driven Development Towards High-Quality Development —A Record of the R&D Center Upgrade

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  I.Background of R&D Center Upgrade In recent years, with the country’s emphasis on high-quality innovation and development in the manufacturing industry, and the increasing global demand for environmental protection, energy conservation, and intelligent technologies, Jiangyin Centersky Electrical Appliance Co., Ltd, a long-established manufacturer of electromagnetic silicon steel sheets , has deeply recognized the importance of technological research and development. In recent years, the company has invested in and continuously upgraded its R&D center, gradually improving its technological innovation capabilities and market competitiveness, keeping up with domestic and international market demands, and promoting the company’s high-quality development in the electrical industry. II. Upgrade Content of R&D Center 1.Hardware infrastructure upgrades and talent development: To better meet market demands, improve product performance, and provide ...
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CENTERSKY‘s Red Pomegranates

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  The October breeze swept through the pomegranate tree in front of the R&D center, its branches laden with fruit, their burnt-yellow, translucent red skins enveloping the glittering seeds. Light and shadow flickered beneath the tree, perfectly reflecting CENTERSKY ( EI LAMINATION ) ‘s flourishing glory. The story of this pomegranate tree dates back to 2003, the year CENTERSKY Electric moved into its brand-new factory. Mr. Xu, the general manager, said, “I hope that CENTERSKY will be like the pomegranate seeds, united and unyielding.” So, he planted a pomegranate tree, barely one meter tall, in the yard. In 2005, the tree bloomed for the first time. The vibrant orange-red petals, resplendent in the May sun, became a symbol of CENTERSKY’s early bloom. Time passed, and in 2020, when CENTERSKY ‘s new office building rose from the grounds, no one was willing to part with the old tree, a treasure trove of memories and companionship. So, workers carefully transplanted ...
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Keeping going on the activity of Quality and Safety

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  As the scorching summer heat persisted, Jiangyin Centersky   Electric Appliance Co., Ltd, manufacture of EI lamination, organized the “Summer Cooling Aid, Care for the Frontline” event on June 27 to distribute heatstroke prevention and cooling kits to frontline operators. This initiative reflects the company’s commitment to the “people-oriented” corporate philosophy and conveys its deep care for employees. In hot weather, during the production of EI lamination , frontline employees stick to their posts to ensure production, which is the cornerstone of the company’s development. Distributing heatstroke prevention gift packages is not only a way to thank everyone for their hard work, but also an important measure for the company to strengthen its safety production defense line. At 11 noon, Manager Zhu from the Human Resources Department, as a representative, personally handed over the company’s carefully prepared heatstroke prevention gift packag...
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