What is a disc suspension porcelain insulator?

Table of Contents

1. Introduction
2. Composition and Structure
3. Technical Specifications
4. Applications of disc suspension porcelain insulators
5. Huayao Company Solutions
6. References

Introduction

Disc suspension porcelain insulators are critical components in high voltage transmission and distribution systems. Their primary function is to support and electrically isolate high voltage lines from the grounding structures, preventing leaks and ensuring efficient power delivery.

Composition and Structure

These insulators are typically composed of high-quality porcelain, known for its high dielectric strength and mechanical stability. The structure features a disc shape with a metallic cap and pin, providing a sturdy connection to transmission towers and cables. The design enhances surface distance and minimizes surface leakage current.

Technical Specifications

The typical specifications of disc suspension porcelain insulators include:

• Voltage Rating: Up to 765 kV
• Mechanical Failing Load: Typically ranges from 70 kN to 120 kN
• Minimum Creepage Distance: 280 mm for standard conditions
• Power Frequency Withstand Voltage: Around 70 kV (wet) and 100 kV (dry)
• Impulse Withstand Voltage: 165 kV (positive) and 200 kV (negative)

Applications of Disc Suspension Porcelain Insulators

Disc suspension porcelain insulators are used primarily in transmission lines, substations, and various industrial settings. Their robust design makes them suitable for challenging environmental conditions, such as coastal areas and high pollution zones.

Huayao Company Solutions

Huayao provides an array of solutions tailored for specific needs in the field of disc suspension porcelain insulators:

• Custom Design: Huayao offers custom-designed insulators that meet particular customer requirements, ensuring compatibility and maximum efficiency.
• Enhanced Durability: Solutions include additional treatments for improved resistance against environmental factors such as pollution, salt, fog, and chemical exposure.
• Quality Assurance: Huayao guarantees rigorous testing standards, conforming to international certifications such as ANSI, IEC, and BS.

The company also specializes in refurbishing and upgrading existing line installations to enhance longevity and reliability.

References

• IEEE Guide for the Selection of Insulators in Respect of Polluted Conditions, IEEE Std 15-1998.
• CIGRÉ Technical Brochure No. 361, Guidelines for the Use of Polymeric Insulators, 2008.
• Huayao Company Official Product Catalog, 2023 Edition.