Post Composite Insulator with UV Resistance for Outdoor Power Transmission

• Customization: Available
• Application: High-voltage, Low-voltage, High-temperature
• Material: Composite Polymer
• Model NO.: Insulator
• Structure: Post Insulator
• Type: A Type Insulator
• Usage: High Voltage Power Transmission, Insulation, Electrical Installation
• Connection Method: Trough Type
• Certification: CE, ISO9001
• Color: Red
• Brand: OEM
• Feature: High Temperature Resistance
• Craftsmanship: APG
• Advantages: Good Sealing
• Pin Insulator: 33kv
• Suspension Insulator: 33kv and Above 33K
• Composite Suspension Insulator: 110kv-550kv
• Voltage: 10kv -750kv Silicone Rubber Insulator
• Transport Package: Wooden Box (Can Be Customized)
• Specification: Customized
• Origin: China
• Production Capacity: 50000pieces/Year

Product Description

Product Description

Compared with porcelain or glass insulators, composite insulators are lighter and more flexible, which gives them both advantages and design challenges in wind conditions.

Good wind deflection performance means:

1.Better stability under strong wind

2.Reduced risk of flashover
3.Less mechanical stress on fittings

4.Safer operation in typhoon / storm regions

5.Longer service life of transmission lines
This is especially important for:

Coastal power grids
Mountain areas
High-wind regions
Long-span transmission lines

Post  composite insulators

Post  composite insulators refers to the phenomenon where a string of composite insulators deviates laterally or tilts from its vertical position under wind load.

In high-voltage transmission and distribution lines, insulators are exposed to natural wind forces. When wind speed increases, the insulator deviates from its vertical position, forming a deflection angle between the insulator and the conductor line.

This wind deflection directly affects:

Clearance distance to towers or poles
Electrical safety margin
Mechanical stress on fittings and hardware
Long-term reliability of the power line
Therefore, wind deflection performance is a critical evaluation index for composite insulators in overhead power systems.

Composite Insulators

Compared with traditional insulators, composite insulators offer superior wind deflection performance:

Performance Item	Composite Insulator	Porcelain Insulator
Weight	Light	Heavy
Wind Load	Lower	Higher
Flexibility	Good	Rigid
Shock Resistance	Excellent	Poor
Mechanical Stress	Reduced	Higher
Installation Ease	Easy	Difficult

Application

 Typical Applications
Wind deflection optimized composite insulators are widely used in:

High-voltage transmission lines

Distribution power networks

Railway electrification systems

Urban substations

Coastal and typhoon-prone regions

Certifications

 Testing & Standards Compliance

Our composite insulators are designed and tested according to international standards such as:

IEC 61109
IEC 61952
ANSI C29.13
Key tests include:

Mechanical load test
Bending resistance test
Wind load simulation test
Aging resistance test
Hydrophobic performance test
This ensures stable performance under real field conditions.

Why Choose Our Composite Insulators?

Engineered for high-wind environments
Lightweight but mechanically strong
Excellent pollution resistance
Long service life (20+ years)
Suitable for harsh climates
Customizable voltage levels and lengths

FAQ

Q1: What is wind deflection of composite insulators?
Wind deflection refers to the horizontal displacement of a composite insulator string when subjected to wind load. It indicates how much the insulator deviates from its vertical position under wind pressure.

Q2: Why is wind deflection important for composite insulators?
Wind deflection affects electrical clearance, mechanical stress on fittings, and overall line safety. Proper wind deflection performance helps prevent flashover, hardware fatigue, and structural damage in high-wind areas.

Q3: Are composite insulators better than porcelain in wind conditions?
Yes. Composite insulators are lighter, more flexible, and generate lower wind load compared with porcelain insulators, making them more suitable for high-wind environments.

Q4: What factors influence wind deflection performance?
Key factors include: FRP core rod strength, shed design and aerodynamics, overall weight of the insulator, and quality of end fittings and crimping technology.

Q5: How do composite insulators reduce wind load?
Their lightweight design and optimized shed profile reduce air resistance and lateral force, resulting in smaller deflection under the same wind speed.

Q6: Are composite insulators safe in typhoon or storm areas?
Yes. They are widely used in coastal, mountainous, and high-wind regions due to their excellent mechanical strength, flexibility, and impact resistance.

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