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27kV Pin Type 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
The 27kV pin type composite insulator is designed for high-voltage overhead distribution lines, providing reliable conductor support, electrical insulation and mechanical stability. Compared with traditional porcelain insulators, Wishpower 27kV pin type composite insulators use silicone rubber housing and high-strength fiberglass core technology, offering lightweight structure, excellent anti-pollution performance, strong weather resistance and easy installation. It is suitable for urban distribution networks, rural power grids, industrial power supply lines and outdoor power systems operating in demanding environments.
Wishpower 27kV pin type composite insulator is developed for medium and high-voltage overhead distribution systems. It provides stable insulation support for 27kV power lines and helps improve the safety and reliability of distribution networks.
The product is manufactured with an integrated molding process, allowing the silicone rubber sheds, housing, fiberglass core and metal fittings to form a compact and reliable structure. This design helps reduce moisture ingress, interface discharge and long-term aging risks.
Main advantages include:
High-temperature vulcanized silicone rubber housing with excellent hydrophobicity.
High-strength epoxy fiberglass core for stable mechanical performance.
Lightweight structure for easier transportation and installation.
Hot-dip galvanized metal fittings for improved corrosion resistance.
Suitable for polluted, humid, coastal, mountainous and rural power line environments.
Customizable creepage distance, connection size and fitting design.
Core Features
Excellent Electrical Insulation Performance
The 27kV pin type composite insulator provides reliable insulation performance for overhead power distribution systems, helping reduce flashover risk and improve line safety.Strong Anti-Pollution Capability
Silicone rubber material offers excellent hydrophobicity and pollution resistance, making the insulator suitable for humid, dusty, coastal and contaminated environments.Stable Mechanical Strength
The fiberglass core provides high bending and tensile strength, allowing the insulator to withstand conductor load, wind load and operational vibration.Lightweight Design
Compared with porcelain pin insulators, composite insulators are lighter and easier to handle, helping reduce installation time and tower load.Excellent Aging Resistance
The silicone rubber housing offers good resistance to UV radiation, ozone, temperature changes and electrical erosion, supporting long-term outdoor operation.Low Maintenance Cost
The product is resistant to breakage and impact, reducing transportation damage, installation loss and maintenance frequency.
Product Structure
Wishpower 27kV pin type composite insulator mainly consists of the following parts:
Silicone Rubber Sheds
The sheds increase creepage distance and improve insulation performance under rain, pollution and humid conditions.Silicone Rubber Housing
The housing protects the fiberglass core from moisture, aging, electrical erosion and environmental damage.Epoxy Fiberglass Core
The fiberglass core works as the main load-bearing component and provides stable mechanical strength.Metal End Fittings
The fittings are used for installation and connection with crossarms or supporting structures. Hot-dip galvanized steel is commonly used for corrosion resistance.Sealing System
The end sealing structure prevents moisture from entering the interface between the core and fittings, improving long-term operating reliability.
Technical Specifications
| Item | Technical Data |
|---|---|
| Product Name | 27kV Pin Type Composite Insulator |
| Product Type | Pin Type Polymer Insulator |
| Rated Voltage | 27kV |
| Application System | High-Voltage Overhead Distribution Line |
| Insulation Material | HTV Silicone Rubber |
| Core Material | Epoxy Fiberglass Rod |
| Fitting Material | Hot-Dip Galvanized Steel |
| Shed Design | Composite Shed Structure |
| Color | Red, Grey or Customized |
| Installation Method | Pin Mounting / Crossarm Mounting |
| Main Performance | Anti-Pollution, Aging Resistance, UV Resistance, Impact Resistance |
| Operating Environment | Outdoor, Humid, Polluted, Coastal and Mountain Areas |
| Custom Options | Creepage Distance, Connection Size, Shed Profile, Fitting Design |
| Applicable Standards | IEC, ANSI or Customer-Specified Standards |
Product Structure
Main Applications
The 27kV pin type composite insulator is widely used in:
27kV overhead distribution lines
Urban power distribution networks
Rural electrification projects
Industrial power supply systems
Mountain and hilly area overhead lines
Coastal and high-humidity environments
Polluted power line areas
Substation outgoing lines and related distribution projects
Testing Capability
Wishpower applies strict quality control and testing procedures for 27kV pin type composite insulators to ensure reliable long-term operation. Main testing capabilities include:
Power Frequency Withstand Voltage Test
Used to verify the insulation strength of the product under rated operating conditions.Lightning Impulse Withstand Test
Used to evaluate electrical safety performance under lightning overvoltage conditions.Mechanical Bending Load Test
Used to check mechanical strength under conductor load, wind load and installation stress.Partial Discharge Test
Used to evaluate internal insulation quality and interface bonding performance.Hydrophobicity Test
Used to verify the water-repellent and anti-pollution performance of silicone rubber surfaces.Aging Performance Test
UV, humidity, salt fog and thermal aging tests can be performed to evaluate outdoor durability.Appearance and Dimension Inspection
The surface quality, shed profile, fitting size and assembly accuracy are checked before delivery.
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: 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 provide customized insulation products?
A: Yes. WishPower supports customized voltage ratings, creepage distances, fittings, colors and drawings according to project requirements.
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.
