Nowadays glass insulator has become popular in transmission and distribution network. Annaled toughened disc glass insulator has numbers of advantages over conventional porcelain insulators.

Advantages of Glass Insulator:
1. High dielectric strength
2. High resistivity
3. High tensile strength
4. Lower absorption of heat
6. Easily detection of internal defects like impurities and air bubble
7. Long service life due to lower aging characteristic
8. Cheaper in price