Lightning Protection System

Lightning is the nature’s most destructive phenomena. Its discharge contains over a million Watts power which can cause damage and destruction in a very short duration. The effects of a direct hit are palpable and immediately visible. Buildings are damaged, trees blown down, people injured and even killed. However, secondary effects of lightning strikes - short duration high voltage spikes known as transient overvoltage can cause equally catastrophic, if not noticeable, damage to electronic systems within a building occurs.

A lightning rod is an important part of a lightning protection system. There must be a controlled point of impact of the discharge to give the lightning current a path to earth without damaging the protected structure.

The following elements form an integrated lightning protection system.

  • Air terminal or Franklin rod and mesh ladder
  • Transmission Cables
  • Earthing
  • Surge Protection Device

The protection provided by Franklin Spike and Mesh conductors consists of distributing and dissipating lightning discharge currents through a network of down conductors and Earthing systems. Installations, sections and materials must comply with the provisions of the standards “IS2309” that define this type of system.

The purpose of a lightning arrester is to drive the lightning current from the arrester to earth. Finally, the earthing electrode conducts and distributes the lightning current to earth. These measures, together with the equipotential bonding, prevents physical damage to structures. However, the effects of lightning can also enter through the transmission lines themselves. To prevent damage to electrical and electronic equipment surge protection devices are installed.





Frankline Spike Method, Tan 45o coverage (radius increases when height increases)

Pure Copper 4ft pipe with 80mm Dia Ball, spike length of 100mm and base plate