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suspension type insulator is made of hard plastic or rubber to avoid metal to metal friction or to absorb the impact,r which is commonly used on shock absorbers.
There are mainly three types of insulator used as overhead insulator likewise1. Pin Insulator2. Suspension Insulator3. Strain Insulator In addition to that there are other two types of electrical insulator available mainly for low voltage application, e.i. Stay Insulator and Shackle Insulator.
suspension type insulators are used for high voltages. consist of a number of porcelain discs connected in series by metal links in the form of a string. The conductor is suspended at the bottom end of this string while the other end of the string is secured to the cross-arm of the tower.
it is genraly used with steel power to provide partial protection from lightning.
