Transmission line insulators are made of
Transmission line insulators are made of
Right Answer is:
Any of the above
SOLUTION
- Insulators used for high-voltage power transmission are made from glass, porcelain or composite polymer materials.
- Porcelain insulators are made from clay, quartz, or alumina and feldspar, and are covered with a smooth glaze to shed water.
- Porcelain has a dielectric strength of about 4–10 kV/mm.
- Glass has higher dielectric strength, but it attracts condensation and the thick irregular shapes needed for insulators are difficult to cast without internal strains.