Detailed Analysis Of The Causes Of Failure Of Insulating Contact Boxes

1. Material aging

Insulating materials will gradually age during long-term use, resulting in a decrease in their insulation performance. The aging process is mainly divided into thermal aging, electrical aging and chemical aging.

Thermal aging: Insulating materials will age faster in high temperature environments, causing changes in their molecular structure, and a decrease in mechanical strength and electrical performance. For example, organic materials such as rubber and plastic are prone to oxidation, cracking and other reactions at high temperatures, causing the materials to become brittle and crack.

Electrical aging: Under the action of an electric field, local discharge or corona will occur inside the insulating material, causing the material to gradually break down. Especially in high-voltage equipment, electrical aging is one of the main causes of Insulation Contact Box failure.

Chemical aging: Insulating materials react with chemical substances in the surrounding environment (such as oxygen, ozone, acid, alkali, etc.), resulting in a decrease in material performance. For example, rubber materials are prone to cracking under the action of ozone.