27kV Pin Type Composite Insulator for Overhead Lines

产品详情

The 27kV pin type composite insulator is designed to provide electrical insulation and mechanical support for conductors on medium-voltage overhead distribution lines. Wishpower combines a high-strength FRP core, silicone rubber housing and corrosion-resistant metal fittings to deliver reliable performance in polluted, humid, coastal and temperature-changing environments.

Product Overview

The Wishpower 27kV pin type composite insulator is an outdoor insulating component developed for 27kV overhead power distribution systems. It is generally installed on a pole crossarm or supporting bracket to secure the conductor and electrically isolate it from grounded structures.

Compared with conventional porcelain pin insulators, the product offers several practical advantages:

• High-temperature vulcanized silicone rubber housing with excellent hydrophobicity;

• High-strength fiberglass-reinforced epoxy core for mechanical support;

• Lightweight construction for easier transportation and installation;

• Corrosion-resistant metal fittings for long-term outdoor operation;

• Customizable creepage distance, connection dimensions and shed profiles;

• Reliable performance in polluted, humid and coastal environments.

 Core Features

1. Reliable Electrical Insulation
   The optimized insulation distance and shed profile provide dependable power-frequency and lightning impulse withstand performance.

2. Excellent Pollution Flashover Resistance
   The hydrophobic silicone rubber surface helps prevent continuous water film formation under wet and contaminated conditions.

3. High Mechanical Strength
   The FRP core withstands conductor weight, wind load, vibration and other mechanical stresses encountered during line operation.

4. Lightweight Design
   The composite structure is lighter than conventional porcelain alternatives, simplifying handling and installation.

5. Weather and Aging Resistance
   The housing material provides resistance to ultraviolet radiation, ozone, temperature variation, tracking and erosion.

6. Low Maintenance Requirements
   The compact structure and contamination-resistant surface help reduce routine inspection and cleaning requirements.

Product Structure

A typical 27kV pin type composite insulator consists of the following components:

1. FRP Core Rod
   The fiberglass-reinforced epoxy resin core provides the primary mechanical strength and internal insulation support.

2. Silicone Rubber Housing
   The external housing protects the core and provides the required creepage distance through its molded shed profile.

3. Conductor-Side Fitting
   The upper fitting supports or secures the conductor and can be designed for different conductor and clamp configurations.

4. Mounting-Side Fitting
   The lower fitting connects the insulator to the crossarm, bracket or pole structure.

5. End Sealing System
   The sealed interface between the core, housing and metal fitting limits moisture and contaminant ingress.

6. Optional Arc Protection Accessories
   Arc protection devices or other fittings can be supplied according to the insulation coordination requirements of the line.