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33kV 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 33kV pin type composite insulator is designed for medium and high voltage overhead line applications. It can replace traditional porcelain pin insulators and is commonly used in 33kV distribution networks, rural power grids, urban distribution systems and industrial power supply lines.
Main advantages include:
High temperature vulcanized silicone rubber housing with excellent hydrophobicity.
Fiberglass reinforced epoxy core rod for stable mechanical strength.
Lightweight structure compared with traditional porcelain insulators.
Suitable for polluted, humid, coastal and outdoor operating environments.
Compact design, easy installation and lower maintenance requirements.
Core Features
Reliable Electrical Insulation
The 33kV pin type composite insulator provides effective insulation between conductors and supporting structures, helping reduce flashover risk.Excellent Anti-Pollution Performance
Silicone rubber sheds offer strong hydrophobic properties, helping maintain insulation performance in polluted or salt-fog environments.Lightweight Design
Composite material makes the insulator lighter than porcelain alternatives, improving transportation and installation efficiency.Strong Weather Resistance
The outer housing is designed to resist UV radiation, ozone, moisture and temperature variation for long-term outdoor service.Easy Installation and Maintenance
Standardized structure allows the product to be installed with common overhead line fittings, reducing construction time and maintenance cost.
Product Structure
The 33kV pin type composite insulator generally consists of the following parts:
Silicone Rubber Housing
Provides external insulation, creepage distance and anti-pollution protection.Fiberglass Core Rod
Works as the main mechanical load-bearing component with good bending and tensile strength.Metal End Fittings
Usually made of hot-dip galvanized steel for connection with crossarms, brackets or line hardware.
Sealing System
Helps prevent moisture ingress and improves long-term operational reliability.Shed Design
Shed profile, spacing and creepage distance are designed according to voltage level and pollution requirements.
Technical Specifications
| Item | Typical Specification |
|---|---|
| Product Name | 33kV Pin Type Composite Insulator |
| Product Type | Pin Type Composite Insulator |
| Rated Voltage | 33kV |
| Application | Overhead distribution line, transmission line, power distribution network |
| Housing Material | High temperature vulcanized silicone rubber |
| Core Material | Fiberglass reinforced epoxy rod |
| End Fittings | Hot-dip galvanized steel |
| Mechanical Bending Load | Customizable according to project requirements |
| Creepage Distance | Designed according to pollution level and customer requirements |
| Color | Grey, red or customized |
| Installation Type | Pin mounting, crossarm mounting |
| Operating Environment | Outdoor, polluted, humid, coastal and high-UV areas |
| Reference Standards | IEC 61952, IEC 62217, customer specifications |
| Customization | Size, creepage distance and fitting structure available |
Product Structure
Main Applications
The 33kV pin type composite insulator is commonly used in:
33kV Overhead Distribution Lines
Used for conductor support and electrical insulation in medium voltage networks.Urban Distribution Network Upgrades
Suitable for improving insulation reliability in urban power distribution systems.Rural Power Grid Construction
Lightweight and easy to install, making it suitable for long-distance rural line projects.High Pollution Areas
Applicable to industrial areas, mining zones, coastal regions and dusty environments.Wind and Solar Power Lines
Used in renewable energy power plants and associated power evacuation lines.Industrial Power Supply Systems
Suitable for factories, ports, mines, chemical plants and industrial parks.
Testing Capability
Wishpower can perform factory inspection and performance testing for 33kV pin type composite insulators according to project requirements.
Visual and Dimensional Inspection
Checks appearance, shed profile, fitting dimensions, installation dimensions and product consistency.Mechanical Performance Test
Verifies the mechanical strength of the core rod, end fittings and complete insulator structure.Power Frequency Withstand Test
Confirms insulation performance under specified voltage conditions.Lightning Impulse Withstand Test
Tests the product’s resistance to lightning overvoltage conditions.Creepage Distance and Structure Check
Ensures the creepage distance and shed design meet the required pollution level.Sealing Performance Inspection
Checks the sealing quality of end fittings to reduce moisture ingress risk.Material Performance Test
Silicone rubber material can be tested for hydrophobicity, aging resistance and UV resistance.
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: 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.
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: Can you provide customized insulation products?
A: Yes. WishPower supports customized voltage ratings, creepage distances, fittings, colors and drawings according to project 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.
