Composite Polymer Insulator

The Polymer Insulator are made of glass fiber epoxy core rod, silicone rubber shed and metal fittings.

The silicon rubber shed adopt the whole packing pressure technique, and then to solve the key probleminterface electric spark puncture, which would affect the reliability of composite insulator.Connection of the glassfiber rod and metal fittings, adopts the pressure welding technique of the international advanced level, and have the full automatic sound wave detection of defects system, high intension, beautiful outline, small volume, light weight, and the metal fitting of galvanization can corrosion prevention and exchange used with porcelain insulator.

① Shed connected with core by integral forming

② Metal end fittings, core and sheds connected by new crimping process

③ The thickness of housing > 3mm, uniform thickness, confirm to IEC Standard

④ Acid resistant, high temperature resistant of epoxy fiberglass core

⑤ The material of metal end fittings is used with hot galvanization and technology of rare earth aluminum coating to avoid coating shedding when crimping, prolonging the service life of the product.

Composite Post Insulators are ideal for various high voltage installations, including:

• Transmission lines
• Distribution networks
• Substations
• Railway electrification systems
• Industrial power systems

01.What is a Composite Post Insulator?

A Composite Post Insulator, also known as a Non-Ceramic Insulator (NCI) or polymer insulator, is a high-performance insulator made from advanced materials such as silicone rubber, ethylene propylene rubber (EPR), or polytetrafluoroethylene (PTFE). They are used in power transmission and distribution systems to provide superior mechanical and electrical performance.

02.What are the main advantages of Composite Post Insulators?

The main advantages of Composite Post Insulators include:

Lightweight Design: They are lighter than traditional ceramic or glass insulators, making them easier to transport and install.

Excellent Hydrophobicity: Synthetic materials like silicone rubber are highly water-repellent, which helps prevent dirt accumulation and reduces leakage current losses.

Strong Environmental Resistance: They are resistant to UV radiation, moisture, and pollution, ensuring long-term stable operation even in harsh conditions.

High Mechanical Strength: The combination of a fiberglass core rod and highly insulating polymer materials provides excellent mechanical strength and electrical performance.

03.What are the applications of Composite Post Insulators?

Composite Post Insulators are widely used in various high voltage power systems, including:

High voltage transmission lines

Distribution networks

Substations

Railway electrification systems

Industrial power systems

04.How do I choose the right Composite Post Insulator?

When selecting a Composite Post Insulator, consider the following factors:

The system’s rated voltage and maximum continuous operating voltage (Uc)

Mechanical strength requirements (e.g., tensile strength and bending strength)

Environmental conditions (e.g., temperature, humidity, and pollution levels)

The size and installation requirements of the insulator

05.Do Composite Post Insulators require maintenance?

While Composite Post Insulators are designed to be maintenance-free, it is advisable to periodically inspect their physical condition to ensure there are no signs of damage or aging. For insulators installed in harsh environments, regular electrical testing may also be necessary to ensure they maintain their protective performance.

06.What is the typical lifespan of a Composite Post Insulator?

The lifespan of a Composite Post Insulator depends on various factors, including environmental conditions and the frequency of overvoltage events. Typically, composite insulators can last between 20 to 30 years, but this depends on usage and the quality of the insulator.

07.Can Composite Post Insulators be used in high pollution environments?

Yes, Composite Post Insulators have excellent pollution resistance. Insulators made with materials like silicone rubber have hydrophobic properties that help prevent pollution buildup, making them suitable for use in high pollution environments.