1. The mechanical strength is high, 1-2 times higher than that of porcelain insulator.

2. Stable performance, not easy to aging, electrical performance higher than porcelain insulator.

3. The production process is less, the production cycle is short, it is convenient for mechanized and automatic production, and the production efficiency is high.

4. Due to the transparency of toughened glass, it is easy to find small cracks and various internal defects or damages when the umbrella skirt is inspected externally.

5. If the glass body of insulator has various defects, the glass will be broken automatically, which is called "self explosion". After the glass insulator self explodes, it still keeps a certain mechanical strength to hang on the line, and the line can still continue to run.

Because glass insulator has the characteristics of self explosion, it is not necessary to carry out preventive test on the insulator during the operation of the line, and it is easy to find the damaged insulator during the inspection of the line, which brings great convenience to the operation.