Advantages

Advantages of Glass Insulators in comparison with Porcelain insulators:

         Completely uniform internal Structure

         Higher dielectric strength and puncture voltage

         Higher withstand voltages against lightning and switching impulses i.e. steep front voltage waves

         Higher residual strength after shattering of the shell and preventing line drop

         Higher mechanical strength and less damage during transport, storage and installation

         Less susceptible to cement growth due to using aluminous cement

         About 25% lighter

         More resistance against splitting and impact

         Better aging performance and less decrease of electro mechanical characteristics in long term

         Easier inspection and maintenance with lower cost due to glass transparency

         Closeness of thermal expansion coefficient of insulator parts, namely glass, pin and the cap.

 

 

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