An electrical insulator is a material whose internal electric charges do not flow freely. The successful operation of an overhead line depends to a considerable extent upon the proper selection of insulation. The five types of insulators are:
- Suspension insulators
- Pin insulators
- Strain Insulators
- Stay Insulators
- Shackle Insulators
Among these insulators, strain, suspension and pin insulators are used in medium to high voltage systems, while stay and shackle are mainly used in low voltage applications.
Free Class
