132kV Composite Post Insulator for Substations

Product Overview

The 132kV composite post insulator provides a lightweight alternative to conventional porcelain station post insulators. Its silicone rubber external insulation offers excellent hydrophobicity, helping reduce the formation of conductive water films under polluted and wet conditions.

Wishpower can adapt the product configuration to the required mechanical load, creepage distance, equipment interface, installation height and environmental conditions.

Key advantages include:

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

• Silicone rubber housing with strong hydrophobic and anti-pollution properties;

• Lower weight than comparable porcelain post insulators;

• Reduced risk of brittle breakage during transportation and installation;

• Sealed construction that protects critical internal interfaces;

• Adjustable creepage distance for coastal, industrial and high-altitude locations;

• Custom flange dimensions, mounting holes and overall height.

Core Features

1. Reliable High-Voltage Insulation
   The product is designed for 132kV power systems and provides the required insulation performance against operating voltage, lightning impulses and power-frequency overvoltage.

2. Excellent Pollution Flashover Resistance
   The silicone rubber housing maintains hydrophobic surface properties, helping improve insulation reliability in contaminated and humid environments.

3. High Mechanical Strength
   The fiberglass core is designed to withstand bending, compression, tensile stress and short-duration dynamic loads from connected equipment.

4. Lightweight and Damage Resistant
   Compared with porcelain units, composite post insulators are easier to transport and install and are less vulnerable to brittle fracture.

5. Outdoor Weather Resistance
   The housing material is suitable for long-term exposure to ultraviolet radiation, ozone, rain, snow, temperature changes and humidity.

6. Reduced Maintenance Requirements
   The hydrophobic housing and optimized shed profile can reduce contamination accumulation and lower the frequency of insulator cleaning.

7. Customizable Configuration
   Product height, creepage distance, flange dimensions, mounting-hole pattern and mechanical load rating can be adapted to the project.

Product Structure

1. Insulating Core Rod
   The fiberglass reinforced epoxy resin core provides the primary mechanical load-bearing function and internal electrical insulation.

2. Silicone Rubber Housing and Sheds
   High-temperature vulcanized silicone rubber forms the external insulation and increases the creepage distance through a carefully designed shed profile.

3. Metal End Fittings
   Upper and lower metal flanges connect the insulator to busbars, disconnectors, equipment terminals and supporting structures.

4. Core-to-Fitting Connection
   A controlled mechanical crimping or equivalent connection process provides a secure bond between the fiberglass core and metal fittings.

5. Sealing System
   Sealed transition areas help prevent moisture, dust and corrosive contaminants from entering the internal interfaces.

6. Electric Field Control Components
   Grading rings or field-control devices can be supplied when required to improve electric field distribution near the energized end.