Pin variety insulator - As the name suggests, the pin type insulator is mounted on a pin on the cross-arm on the pole. From the figure, it is noticed that porcelain portion of each disc is in among two metal hyperlinks. For higher voltage transmission lines, stain insulator consists of an assembly of suspension insulators.
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The wires are suspended from a 'string' of identical disc-shaped insulators that attach to every other with metal clevis pin or ball and socket hyperlinks. The suspension form insulator has the following advantages. Direct measurements of the field strengths close to the insulator confirm that the voltage gradients do not attain quite higher values below regular circumstances, and that the electrical forces are proportionately weak.
The shackle insulator (also known as a spool insulator) is commonly utilised in low voltage distribution network. The lead to and traits of radio interference due to power lines are discussed, and information are given of the interfering field strength due to high-voltage lines operating in a variety of weather conditions.