What is the function of lightning conductor and lightning rod? What is the role of a lightning arrester?
Lightning wires and lightning rods are used to prevent direct lightning strikes and to reduce the chance of lightning strikes by electrical equipment (overhead transmission lines and substation equipment) within their protective range.
The role of arrester is to cut the invading flow wave through the parallel discharge gap or nonlinear resistance to reduce the voltage amplitude of the protected device. Lightning arresters can be used to protect the atmosphere from overvoltages or to protect operating overvoltages.
