Description
Our Pin Composite Insulator is a high-performance, lightweight insulation component specially designed for overhead power distribution lines. It adopts a composite structure of high-quality silicone rubber housing and fiberglass reinforced plastic (FRP) core, integrating superior electrical insulation, mechanical stability, and environmental adaptability. As a key component in power grids, it is mainly used to support and insulate overhead conductors on utility poles, ensuring safe and reliable power transmission in various complex outdoor environments.
Key Features
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Superior Electrical Insulation: High dielectric strength and excellent hydrophobicity, effectively preventing leakage current and flashover, even in polluted, wet, or icing conditions. The self-cleaning surface reduces the risk of insulation failure and maintenance frequency.
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High Mechanical Strength: The FRP core provides strong bending, compression, and impact resistance, capable of withstanding the weight of conductors, wind loads, ice loads, and other external forces, ensuring stable support performance for long-term operation.
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Lightweight & Easy Installation: Significantly lighter than traditional porcelain pin insulators, reducing the load on utility poles and simplifying transportation, hoisting, and on-site installation, which greatly lowers construction and labor costs.
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Excellent Weather & Corrosion Resistance: Resistant to UV radiation, moisture, salt spray, chemical erosion, and extreme temperature changes (-40°C to +80°C), suitable for harsh outdoor environments such as coastal areas, deserts, and industrial zones.
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Anti-Pollution & Anti-Icing: The special silicone rubber housing has strong anti-pollution and anti-icing capabilities, effectively adapting to polluted power grids and cold regions, ensuring stable operation in harsh weather.
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Long Service Life: High-quality materials and advanced manufacturing processes ensure excellent aging resistance, with a service life of more than 30 years, minimizing maintenance costs and improving the overall reliability of the power system.
Application Scope
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Application Scenario
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Applicable Voltage Range (AC)
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Medium-voltage overhead distribution lines
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10kV, 20kV, 35kV
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Low-voltage overhead distribution lines
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0.4kV, 1kV
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Rural and urban power distribution networks
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10kV–35kV
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Railway electrification distribution lines
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27.5kV, 10kV
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Industrial and mining power distribution systems
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10kV–35kV
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Coastal, desert, and high-pollution area power grids
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1kV–35kV
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Technical Advantages
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Compliant with international standards such as IEC 60815, IEC 61109, and GB/T 19519, ensuring product quality and interchangeability.
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Low electrical loss, stable insulation performance, and strong resistance to electrical breakdown, improving power transmission efficiency.
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No zero-value risk, easy to detect and maintain, reducing the workload of line inspection and maintenance.
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Compact structure, small volume, and strong adaptability to different utility pole types and installation environments.
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Environmentally friendly and recyclable materials, meeting green energy development requirements.
Our Pin Composite Insulator combines reliable insulation performance, excellent mechanical stability, and strong environmental adaptability, providing a cost-effective and durable solution for overhead power distribution networks. It is widely recognized in the global power industry and has become an ideal alternative to traditional porcelain pin insulators.












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