COMPOSITE LINE POST INSULATOR

Product Description：

The 24kV composite line post insulator is a high-performance polymer insulator designed for modern overhead distribution and transmission systems. Made with a premium fiberglass reinforced core rod, silicone rubber sheds, and hot-dip galvanized steel end fittings, it provides excellent electrical insulation and long-term mechanical reliability. The silicone rubber surface offers superior hydrophobicity, preventing leakage current and ensuring stable performance in rain, humidity, coastal environments, and heavy pollution areas.

This polymer line post insulator is widely used in 10kV–220kV overhead lines, serving as a strong support for conductors while improving system safety and reducing maintenance costs. Its lightweight structure allows for easy installation on poles or crossarms, making it an ideal solution for modern power utilities seeking durability, corrosion resistance, and high mechanical strength.

Product Advantages：

1. Excellent electrical insulation with long leakage distance

2. High mechanical strength with superior bending resistance

3. Strong UV, weather, and aging resistance

4. Lightweight and easy to install

5. Low maintenance with self-cleaning surface

Application Scenarios:

1. Overhead Transmission Lines:Installed on steel or concrete poles to support conductors and maintain electrical clearance, ensuring safe and stable power transmission.

2. Distribution Networks:Used as line support insulators in urban and rural medium-voltage networks to reduce line faults and improve reliability.

3. Substations:Installed in substations as post insulators for bus bars, switches, and equipment connections, providing insulation and mechanical support.

4. High Pollution Areas:Ideal for coastal, desert, and industrial zones where pollution levels cause flashover risks; silicone rubber sheds provide strong hydrophobicity.

5. Mountain and Remote Lines:Lightweight design reduces transportation and installation effort, especially for mountainous terrains.

6. Upgrading Old Porcelain Insulators:Replaces traditional porcelain post insulators to enhance mechanical strength, reduce breakage, and improve service life.

7. Smart Grid & Modern Power Projects:Compatible with smart monitoring devices and widely used in modern grid construction for higher safety and efficiency.

How They Are Installed：

• Mounted vertically or horizontally on the pole or crossarm

• Connected with bolts, brackets, or standardized fittings

• Conductors are fixed using clamps or ties depending on voltage

• No special maintenance required due to silicone hydrophobicity

Safety & Quality Assurance：

100% factory-tested before shipment

If you’re looking for specific dimensions or models, please refer to our catalog above. Simply provide the size, we’ll be happy to offer you a quote. Feel free to leave us a message, email us your requirements, or call directly for assistance or to place an order.

FAQ:

Q1:What is a Composite Line Post Insulator?

A1:It is a polymer-based insulator used to support and insulate conductors in overhead power lines.

Q2:What materials are used?

A2:Silicone rubber sheds, fiberglass core rod, and hot-dip galvanized steel fittings.

Q3:What voltage levels is it suitable for?

A3:Commonly used for 10–220kV distribution and transmission lines.

Q4:What are the advantages compared with porcelain insulators?

A4:Lighter, higher mechanical strength, anti-contamination, better hydrophobicity, and safer performance.

Q5:Does it require maintenance?

A5:Minimal maintenance due to hydrophobic silicone rubber surface.

Q6:Can it be used in high-pollution or coastal areas?

A6:Yes, it is ideal for pollution-heavy or coastal environments.

Q7:What installation methods are available?

A7:Installed vertically or horizontally on poles or crossarms using bolts and brackets.