Product Video
1 / 1
Line Pin Composite Insulator for Overhead Power Lines
Factory: We are a professional manufacturer providing OEM custom production services.
- Product Overview
- Technical Specifications
- Product Structure
- Applications
- Testing Capability
- Packaging & Customization
Product Overview
Wishpower line pin composite insulator is made of a high-strength fiberglass core rod, silicone rubber housing and metal end fittings. It is designed for medium-voltage and high-voltage overhead distribution lines where reliable insulation and mechanical support are required.
Compared with traditional porcelain pin insulators, composite pin insulators are lighter, easier to install and more resistant to pollution, moisture, salt fog and outdoor aging.
Main advantages include:
Lightweight structure for easier transportation and installation.
Silicone rubber housing with excellent hydrophobicity and pollution flashover resistance.
Fiberglass core rod for stable mechanical strength.
Suitable for distribution lines, grid upgrades and outdoor electrical projects.
Customizable voltage rating, creepage distance and fitting design.
Core Features
Reliable insulation performance
The line pin composite insulator provides good power frequency withstand capability and lightning impulse resistance, helping improve the safety of overhead power lines.Excellent pollution resistance
The silicone rubber surface offers hydrophobicity and hydrophobicity transfer, maintaining insulation performance in dusty, humid, coastal and industrial environments.Stable mechanical strength
The epoxy fiberglass core rod provides strong mechanical support against conductor load, wind pressure, vibration and outdoor stress.Strong aging resistance
The outer insulation material is resistant to UV radiation, ozone, tracking, erosion and weather aging, making it suitable for long-term outdoor operation.Easy installation and maintenance
The lightweight structure reduces installation workload and helps lower maintenance costs.Adaptability to harsh environments
It can be used in high-altitude areas, heavy pollution zones, coastal regions, humid environments and areas with large temperature differences.
Product Structure
A line pin composite insulator usually consists of the following parts:
Silicone rubber housing
Provides external insulation protection with hydrophobicity, pollution resistance and weather resistance.Epoxy fiberglass core rod
Works as the main load-bearing component, ensuring mechanical strength and structural stability.Metal end fittings
Usually made of hot-dip galvanized steel or customized metal fittings for connection with crossarms and line hardware.End sealing system
Prevents moisture from entering the interface between the core rod and end fittings, improving long-term reliability.Pin mounting structure
Designed for crossarm installation on overhead lines, supporting conductors while maintaining electrical insulation.
Technical Specifications
| Item | Common Specification |
|---|---|
| Product Name | Line Pin Composite Insulator |
| Product Type | Pin Type Composite Insulator / Polymer Pin Insulator |
| Applicable Voltage | 10kV, 11kV, 15kV, 24kV, 33kV, 36kV, etc. |
| Insulation Material | High Temperature Vulcanized Silicone Rubber |
| Core Rod Material | Epoxy Fiberglass Core Rod |
| Fitting Material | Hot-Dip Galvanized Steel / Customized Fittings |
| Installation Method | Pin Mounting / Crossarm Installation |
| Applicable Line | Overhead Distribution Line, Medium-Voltage Power Line |
| Main Performance | Pollution Resistance, Aging Resistance, UV Resistance, Lightweight |
| Service Environment | Outdoor, Humid, Polluted, Coastal and High-Altitude Areas |
| Custom Options | Voltage Rating, Creepage Distance, Shed Design, Fitting Size |
Product Structure
Main Applications
Wishpower line pin composite insulator is widely used for conductor support and insulation protection in power distribution systems. Common applications include:
Overhead distribution lines
Used for conductor support and insulation on 10kV, 11kV, 24kV, 33kV and other medium-voltage overhead lines.Urban power distribution networks
Suitable for city grid upgrades, distribution line reconstruction and compact line construction.Rural power grid projects
Ideal for long-distance rural distribution lines, helping reduce installation and maintenance difficulty.Industrial power supply lines
Used in factories, mining areas and industrial parks for outdoor power line insulation.Coastal and polluted areas
Suitable for salt fog, humidity, dust and heavy industrial pollution environments.Wind and solar power projects
Can be applied in collection lines and supporting distribution systems for renewable energy projects.Substation outgoing lines
Used for overhead outgoing lines and distribution connections outside substations.
Testing Capability
Wishpower focuses on quality control and testing for line pin composite insulators. Common testing capabilities include:
Visual and dimensional inspection
Checks shed profile, fitting dimensions, surface quality and assembly consistency.Power frequency withstand test
Verifies the insulation withstand capability under specified voltage conditions.Lightning impulse withstand test
Evaluates insulation reliability under lightning overvoltage conditions.Mechanical load test
Tests the mechanical strength of the core rod and end fitting connection.Hydrophobicity test
Evaluates the hydrophobic condition of the silicone rubber housing and its pollution resistance.Sealing performance inspection
Confirms the reliability of the end sealing structure to prevent moisture ingress.Aging performance test
Assesses long-term outdoor performance through UV, thermal aging and humidity-related tests.
Packaging & Transportation
To keep products safe during transportation and storage, we use the following packaging methods:
- Individual Packaging: Each product is wrapped with protective film, packed in a high-strength carton, and cushioned with buffer materials.
- Pallet Packaging: Multiple products are fixed on wooden pallets and wrapped with stretch film, suitable for container shipping.
- Export Packaging: Fumigated wooden cases, moisture-proof treatment, and detailed packing lists are provided according to sea freight requirements.
Customization Service
WishPower can provide the following customization options according to customer requirements:
- Structural Dimensions: Adjust overall height, creepage distance, shed quantity, and shed diameter.
- End Fittings: Customize ball-socket, tongue-clevis, eye, or other interface types according to connection requirements.
- Color: Standard gray, with red, yellow, blue, and other colors available subject to MOQ.
- Special Environments: Formulations for extreme cold (-60 C), strong UV exposure, heavy pollution, and other harsh conditions.
- Voltage Classes: Full-range customization from 10kV to 1000kV.
- Marking: Customer logos or model numbers can be molded or printed on the product.
For specific customization requirements, please contact our sales engineers. We will provide a technical solution within 24 hours.
FAQ
Q: How do I choose the right composite insulator for my project?
A: You can provide voltage level, installation type, mechanical load, creepage distance and operating environment. Our team will recommend the suitable model.
Q: Are composite insulators suitable for coastal areas?
A: Yes. Composite insulators with silicone rubber housing provide good hydrophobicity and anti-pollution performance, making them suitable for coastal and polluted environments.
Q: What standards can your products meet?
A: Our products can be designed and tested according to IEC, ANSI, GB and customer-specific technical requirements.
Q: What information should I provide for a quotation?
A: Please provide voltage level, product type, quantity, application environment, standard, drawings or technical specifications if available.
Q: Can you supply complete products for transmission and distribution projects?
A: Yes. We can provide composite insulators, surge arresters, fuse cutouts, insulating bushings and related power insulation products.
