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We can develop personalized, comprehensive solutions tailored to users' diverse casing requirements. The company employs advanced production technologies and uniquely designed process equipment, ensuring the stability and consistency of our products—qualities that keep us at the forefront of the industry. Moreover, our products have demonstrated excellent performance over years.
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We can develop personalized, comprehensive solutions tailored to users' diverse casing requirements. Leveraging advanced production technologies and uniquely designed process equipment, we ensure the stability and consistency of our products, enabling them to maintain a leading position among industry peers. Additionally, our products have demonstrated excellent performance over years of reliable operation.
Product Category：Dry-type Bushing.
The Full Description of this Product:
12kV-550kV Dry-Type Capacitor Bushings: A Dual-Reliability Choice—Combining Composite and Porcelain Materials.
We can develop personalized, comprehensive solutions tailored to users' diverse casing requirements. The company employs advanced production technologies and uniquely designed process equipment, ensuring the stability and consistency of our products—qualities that keep us at the forefront of the industry. Moreover, our products have demonstrated excellent performance over years of operational experience.
The 12kV–550kV dry-type capacitive bushings, serving as critical insulation components in high-voltage power equipment, are categorized into composite and porcelain types based on the material of their housings. Both types feature a dry-type capacitive core as their central element, and thanks to their distinct material properties, they deliver outstanding performance in various applications, providing robust support for the stable operation of power systems.
I. Composite Bushing-Type Dry Capacitor Bushing:
The outer layer of the composite sleeve-type dry capacitor bushing is made from a combination of glass-fiber-reinforced resin and silicone rubber umbrella skirts, a material pairing that provides numerous advantages.
In terms of weight, it is lighter than the porcelain-sheathed type, making installation much easier and reducing the load-bearing pressure on equipment—particularly ideal for scenarios where equipment weight is strictly limited. The silicone rubber umbrella skirt boasts exceptional hydrophobic properties and outstanding resistance to pollution flashovers. Even in harsh environments such as areas with frequent fog, high humidity, heavy dust, or coastal salt spray, it effectively minimizes pollutant adhesion and significantly lowers the risk of surface discharge, ensuring stable insulation performance.
At the same time, composite materials exhibit excellent aging and corrosion resistance, effectively withstanding erosion from natural elements such as ultraviolet light and ozone. They boast a long service life and require minimal maintenance costs. Operating reliably across voltage ranges from 12kV to 550kV, these materials are ideally suited for applications in switchgear, transformers, and other equipment—and have proven particularly effective in power projects situated in challenging environments like heavily polluted areas or high-altitude regions.
II. Porcelain Sleeve-Type Dry-Type Capacitor Bushing:
The outer layer of the porcelain sleeve-type dry capacitor bushing is made from high-quality porcelain material, inheriting the excellent characteristics of traditional porcelain sleeves. Porcelain material boasts exceptionally high mechanical strength, enabling it to withstand substantial conductor weights, short-circuit electromagnetic forces, and external impacts—loads that would typically cause deformation or damage over time. As a result, the bushing maintains outstanding stability and remains highly reliable even during prolonged operation.
Its insulation performance is reliable, with a smooth and dense glaze layer on the surface that effectively prevents current leakage under high-voltage conditions, ensuring safe insulation between the energized internal components and the equipment’s outer casing. The porcelain material exhibits excellent thermal resistance, maintaining stable performance across a wide range of temperature fluctuations, making it suitable for extreme climatic environments such as high temperatures, severe cold, and highly corrosive conditions.
In large-scale power equipment such as transformers and circuit breakers operating at voltage levels ranging from 12kV to 550kV, porcelain-sleeved dry-type capacitive bushings are widely used. They particularly demonstrate irreplaceable advantages in applications that demand high mechanical strength, superior heat resistance, and excellent corrosion resistance.
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