The Difference Between Post Insulator And Suspension Insulator

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What Is a Post-Insulator?

Post insulator: It is a special kind of insulating control that can play an important role in overhead transmission lines.

In the early days, post insulators were mostly used on poles, and gradually a large number of suspension insulators, usually made of silicone or ceramic, were developed from the ends of towers connected to high type high voltage lines to increase the creepage distance. They are called insulators.

Power line insulators have two basic roles in overhead transmission lines, namely to support the conductor and to prevent current backflow, and these two functions must be ensured.

Electrical insulators should not fail due to various electrical and mechanical stresses caused by changes in environmental and electrical load conditions, otherwise, they would not have the significant role of insulators and would impair the service and operating life of the entire line.

What Is a Suspension Insulator?

Suspension insulators are generally made of insulating parts (such as porcelain and glass parts) and metal accessories (such as steel feet, iron caps, flanges, etc.) glued or mechanically clamped together.

Insulators are widely used in power systems. They are generally externally insulated and work under atmospheric conditions.

The external live conductors of overhead transmission lines, power plants, substations, and various electrical equipment should be supported by insulators and insulated from the earth (or grounded objects) or other conductors with potential differences.

The Difference Between Column Insulators And Suspension Insulators

A post insulator is insulated by fixing it on a platform to reach the high-voltage end and the grounded end.

Suspended insulators are insulated by hanging on a pole tower cross-arms to reach the high-voltage end and the grounded end.

The two are just installed differently.

Types of Overhead Line Insulators

Commonly used insulators for overhead distribution lines are pin insulators, column type porcelain insulators, suspension insulators, butterfly insulators, rod type porcelain insulators, wire pulling porcelain insulators, ceramic cross-arms insulators, etc. Low-voltage lines with low-voltage porcelain vase pin type and butterfly type two.

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