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Advantages of Glass Insulators
- Jul 26, 2018 -

Insulators are usually made of glass and porcelain. It is mainly used to fix wires to poles, and to insulate wires and poles. Insulator is one of the key components of high voltage transmission lines, and its performance directly affects the operation safety of the whole transmission line. Glass insulators are widely used because of their self destruction and easy maintenance. In the first few years of production and operation of glass insulators, it is found that it has the following advantages over porcelain insulators.

Because of the high mechanical strength of the surface of the glass insulator, the surface is not easy to crack. The electrical strength of the glass is generally kept unchanged throughout the operation, and its aging process is much slower than that of porcelain. Therefore, the glass insulators are largely discarded because of their self damage, and they occur within the first year of operation, but the defects of porcelain insulators are only discovered after several years of operation.

The use of glass insulators can cancel the live periodic preventive tests of insulators during operation. This is because every damage to toughened glass will cause damage to insulators, and it is easy for operators to detect them when they patrol. When the insulators are damaged, the glass fragments near the steel cap and iron foot are jammed, and the mechanical strength of the remaining part of the insulator is enough to prevent the insulator string from breaking. The self destruction rate of glass insulators is one of the most important indicators of product quality. It is also the quality basis for bidding evaluation of power transmission projects.