Shandong Huilong Electrical Material Co., Ltd., with a history dating back to 1970, has established itself as a prominent player in the enameled wire manufacturing industry. The company's enameled wires have found extensive applications across a wide range of fields, and their utilization in power transformers is particularly notable.
Shandong Huilong offers an array of enameled wire products. Their enameled round aluminum wires, for instance, are available in a diameter range from 0.10 mm to 6.0 mm. These wires exhibit remarkable thermal stability, with thermal classes spanning from 155 °C to 240 °C, making them suitable for various operating temperature requirements in power transformers. They also possess excellent resistance to freeze, higher heat shock, radiation, and solvents.The enamelled copper flat wires provided by Huilong come in different sizes. For flat wires, the thickness (a) ranges from 0.80 mm - 5.0 mm, and the width (b) from 3 mm - 16 mm. For small flat wires, the thickness (a) is from 0.018 mm - 0.2 mm, and the width (b) from 0.16 mm - 0.38 mm. These wires adhere to international standards such as IEC, NEMA, and JIS, ensuring high - quality performance.
In power transformers, enameled wires play a pivotal role. They are used to wind the coils, which are fundamental components for the transformer's operation. The enameled wire serves as a medium for the conversion of electrical energy into magnetic energy and vice versa. When an alternating current passes through the enameled wire coils, a magnetic field is generated, which then induces a voltage in the secondary coils, enabling the transformation of voltage levels.The insulation provided by the enamel coating on the wire is crucial. It prevents short - circuits between adjacent turns of the coil, ensuring the efficient and safe operation of the transformer. Any breakdown in insulation could lead to significant losses, malfunctions, or even damage to the transformer.
Power transformers often operate under high - temperature conditions. Shandong Huilong's enameled wires, with their high - temperature resistance capabilities, can withstand these elevated temperatures without significant degradation of their electrical and mechanical properties. For example, their 240 - class enameled wires can endure continuous high - temperature operation, which is beneficial for power transformers in industrial settings where heat generation is substantial. This high - temperature resistance helps in maintaining the efficiency of the transformer over long - term use and reduces the risk of premature failure due to thermal stress.
The enameled wires from Shandong Huilong meet international first - class standards in terms of electrical performance. They have low electrical resistance, which means that there is minimal power loss in the form of heat during the flow of current through the coils. This property is vital for power transformers as it allows for more efficient transmission and transformation of electrical power. Additionally, their excellent insulation properties ensure that the magnetic flux is effectively contained within the coils, maximizing the transformer's energy transfer efficiency.
In power transformers, the coils are subjected to mechanical stress during operation, such as vibration and electromagnetic forces. Shandong Huilong's enameled wires possess good mechanical strength and flexibility. The enamel coating also has high abrasion resistance, which protects the wire from wear and tear during the winding process and during the transformer's operation. This mechanical durability ensures the long - term reliability of the transformer coils, reducing the need for frequent maintenance and replacement.
With the increasing focus on environmental protection, power transformers need to operate in compliance with environmental regulations. Shandong Huilong's enameled wires are designed to meet environmental indicators. They are resistant to various environmental factors such as moisture, chemicals, and radiation. This environmental adaptability is crucial for power transformers installed in different geographical locations and operating conditions, whether it is in a humid coastal area or an industrial zone with chemical pollutants.
Shandong Huilong has been investing in research and development to continuously improve its product offerings. The company has obtained a series of certifications, including ISO 9001, ROHS, UL, SGS, and REACH, which testify to its commitment to quality and environmental compliance.In 2024, the company obtained a patent for a "kind of enameled round aluminum wire production line suitable for power transformers" (authorization announcement number CN118248405B). This invention is related to the production technology of enameled round aluminum wires. The production line is equipped with features such as a straightening structure to straighten the aluminum wire before drawing, preventing wire breakage due to bending during the drawing process. A cleaning structure is also included to remove any surface residues on the wire, ensuring the quality of the drawn wire. These technological innovations not only improve the production efficiency but also enhance the quality of the enameled wires used in power transformers.
The company's products, including those used in power transformers, have a wide market reach. They are sold in more than 50 countries, including those in Europe, America, and Southeast Asia. The company's reputation for producing high - quality enameled wires has earned it the trust of many well - known enterprises at home and abroad. In the power transformer industry, Shandong Huilong's enameled wires are favored for their reliable performance, which has contributed to the company's strong position in the global electromagnetic wire market.In conclusion, Shandong Huilong's enameled wires, with their excellent thermal, electrical, and mechanical properties, as well as their environmental adaptability, have proven to be a reliable choice for power transformer applications. Through continuous innovation and a focus on quality, the company is well - positioned to meet the evolving needs of the power transformer industry and contribute to the efficient operation of power systems worldwide.
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