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A composite long rod insulator is a type of insulator used in high-voltage electrical power systems. It is designed to provide insulation and support for power transmission lines and electrical apparatus. 

Composite long rod insulators are primarily used in suspension strings in straight-line supports and as tension strings in anchor towers and dead-end towers. They are also used in the jumpers or portals of outdoor substations.

Composite long rod insulators are made from a combination of materials, typically fiberglass reinforced with epoxy resin. The composite materials used in these insulators offer several advantages over traditional ceramic or glass insulators. Some of the key advantages include:

1. High mechanical strength: Composite materials have excellent strength-to-weight ratios, allowing for the design of insulators that are strong yet lightweight.

2. Resistance to vandalism and breakage: Composite insulators are more resistant to vandalism, accidental breakage, and damage from external factors like weather and impact.

3. Better performance in polluted environments: Composite materials are less prone to the accumulation of pollutants such as dust, salt, and industrial contaminants. This allows composite insulators to maintain their electrical and mechanical properties even in heavily polluted areas.

4. Improved resistance to electrical tracking and arcing: Composite insulators have excellent electrical properties, including high resistance to electrical tracking and arcing, ensuring reliable performance in high-voltage systems.

5. Reduced maintenance requirements: Due to their robust construction and resistance to pollution, composite insulators generally require less maintenance compared to ceramic or glass insulators.

As one of the best polymer composite insulators manufacturers & suppliers in China. Our company manufactures products like Polymer Suspension Insulators,Polymer Pin & Linepost Insulators,Polymer Railway Insulators that are high in quality and meets international quality standards.