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20kV Pin Type Composite Insulator for Overhead Distribution 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 20kV pin type composite insulator is widely used in 20kV overhead distribution networks. It is normally installed on crossarms or pole-mounted supports to fix conductors and prevent electrical leakage to the pole structure. Compared with traditional porcelain pin insulators, composite pin insulators offer better lightweight performance, improved pollution resistance, higher impact resistance, and easier installation.
Main advantages include:
High-temperature vulcanized silicone rubber housing for excellent hydrophobicity and anti-pollution performance.
High-strength epoxy fiberglass core rod for stable mechanical performance.
Hot-dip galvanized metal fittings for enhanced corrosion resistance.
Lightweight structure for easier transportation and installation.
Suitable for 20kV distribution lines, overhead networks, and demanding outdoor environments.
Core Features
Reliable Electrical Insulation
The 20kV pin type composite insulator provides stable insulation protection for medium-voltage distribution systems and helps reduce flashover and grounding risks.Excellent Pollution Flashover Resistance
Silicone rubber housing maintains good hydrophobicity, helping the insulator perform reliably in dusty, humid, coastal, and polluted environments.Lightweight and Easy to Install
The composite structure is lighter than porcelain insulators, reducing pole load and improving installation efficiency.Strong Impact and Breakage Resistance
Composite insulators are less likely to suffer brittle fracture during transportation, handling, and field installation.Long-Term Outdoor Durability
The product is designed with UV resistance, aging resistance, tracking resistance, and erosion resistance for long-term outdoor operation.
Product Structure
The 20kV pin type composite insulator usually consists of the following components:
Silicone Rubber Housing
Provides external insulation, creepage distance, weather resistance, and pollution flashover protection.Epoxy Fiberglass Core Rod
Acts as the main mechanical load-bearing component and ensures structural strength.Metal End Fittings
Usually made of hot-dip galvanized steel or customized fittings for mounting and connection.Interface Sealing System
Protects the connection area between the core rod and metal fittings to prevent moisture ingress.Shed Design
Optimized shed profile increases creepage distance and improves insulation performance under wet and polluted conditions.
Technical Specifications
| Item | Technical Parameter |
|---|---|
| Product Name | 20kV Pin Type Composite Insulator |
| Product Type | Pin Type Composite Insulator |
| Rated Voltage | 20kV |
| Application System | Medium-voltage overhead distribution line |
| Housing Material | HTV Silicone Rubber |
| Core Material | Epoxy Fiberglass Core Rod |
| Fitting Material | Hot-dip Galvanized Steel or Customized Fittings |
| Rated Mechanical Bending Load | Customized according to project requirements |
| Creepage Distance | Designed according to pollution level and customer requirements |
| Shed Color | Grey, Red, or Customized |
| Installation Method | Crossarm mounting, pole support mounting |
| Operating Environment | Outdoor, humid, polluted, coastal, industrial areas |
| Reference Standards | IEC 61109, IEC 61952, IEC 62217, related power industry standards |
| Customization | Size, fitting, creepage distance, color, and packaging customization available |
Product Structure
Main Applications
The 20kV pin type composite insulator is commonly used in:
20kV overhead distribution lines
Urban distribution network projects
Rural power grid upgrade projects
Industrial park power supply lines
Coastal and high-humidity areas
Polluted distribution line environments
Medium-voltage lines for wind farms and solar power plants
Overhead incoming and outgoing lines in substations
Testing Capability
Wishpower applies a strict testing process for 20kV pin type composite insulators to ensure stable product quality and project reliability.
Visual and Dimensional Inspection
Checks surface quality, shed profile, fitting dimensions, and assembly consistency.Power Frequency Withstand Voltage Test
Verifies the insulation capability under specified voltage conditions.Lightning Impulse Withstand Test
Evaluates insulation stability under lightning impulse conditions.Mechanical Load Test
Tests the mechanical strength of the core rod, fittings, and complete insulator structure.Creepage Distance and Clearance Inspection
Ensures the product meets operating environment and pollution level requirements.Galvanizing Layer Inspection
Checks the anti-corrosion layer thickness and surface quality of metal fittings.Hydrophobicity Test
Evaluates the surface performance of silicone rubber housing under humid and polluted conditions.
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: 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 provide customized insulation products?
A: Yes. WishPower supports customized voltage ratings, creepage distances, fittings, colors and drawings according to project requirements.
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: 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.
