Effects Of Insulation Failure 2021

Effects Of Insulation Failure 2021

In this article, we will discuss in detail the reasons for insulator failure. 

  

Usually, an insulator can be useless or fail to work for many possible reasons. Some of the notable reasons are: 

1. If the insulator breaks or catches a crack.
2. If you do not use the right insulating material.
3. In case of flash over the insulator.
4. If the mechanical stress on the insulator is high.
5. If there is a short circuit in the insulator.
6. Dirt and dust accumulate on the insulator.
7. If the exterior of the insulator is uneven and insufficiently glossy.

Now let's try to know a little bit about these reasons- 

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1. If the insulator is broken or cracked

One of the main reasons why insulators are useless is cracking. An insulator is usually made up of three components, these are: 

• Porcelain body 
• Steel arrangement 
• Cement 

Porcelain (ceramic) bodies, cement, and steel can expand due to cold, heat, or humidity in different seasons. When these expand abnormally, cracks appear in the insulator or break and become useless. 

  

In addition, cracks in the insulator can occur due to contraction and expansion of the insulator pin or the metal part of the joint inside the insulator. 

  

2. If you do not use the right insulating material

The insulator can easily become useless if the material used to make the insulator is adulterated. In addition, if the insulator is made by firing less, small porous holes may appear on the insulator. 

Subsequent rains or dew reduce the resistance of the insulator by absorbing water vapor in these pores. This causes current leakage in the insulator and causes puncture and at one point the effectiveness of the insulator is lost and becomes useless. 

3. In case of flash over the insulator 

Even if a flashover occurs in the insulator, the insulator may become useless. When the flush over the insulator is prolonged, the insulator becomes abnormally hot, making the insulator useless. Currently, horns or rings are used to protect the insulator from flashover. 

  

4. If there is more mechanical stress in the insulator 

Insulator structural defects - Insulators cannot withstand high mechanical stress if there are deviations or if the quality of the insulating material is low. 

In addition, even in good insulators, mechanical stress increases due to the oscillating mass of the conductor, which can cause the insulator to break or rupture. In addition, the insulator pin bends under excessive pressure. 

  

5. If there is a short circuit in the insulator

Many times large birds create short circuits between conductors and cross arms tied to the insulator. This short circuit can damage the insulator. This is usually the case with pin insulators. 

However, in this case, if Bird guards are placed near the insulator and cross arm, this condition can be relieved. 

  

6. Dirt and dust accumulate on the insulator 

If the coating of the insulator is too old or dull or not properly polished, water, dust, dirt, etc. will accumulate on the insulator. If these are frozen, a partial flush over is created in the insulator, which is enough to make the insulator useless. 

This dirt can also accumulate in good insulators. For this occasion, during routine checks, the sand has to be cleaned and the insulator has to be replaced when the shiny material becomes dull. 

  

7. If the insulation of the insulator is insufficiently glossy and uneven 

If the outer lining of the insulator is insufficiently smooth or the coating is unsuitable during the construction of the insulator, water vapor, dirt, dust, salts, etc. may accumulate on the insulator. 

Later all this dirt accumulates and flushes over the insulator making the insulator useless.