Conventional LPS system
Conventional Lightning Rod (Spike Arrester) or lightning conductor is a metal rod or conductor mounted on top of a building and electrically connected to the ground through a wire or earthing copper strips, to protect the building in the event of a lightning strike. If lightning strikes the building, then according to laws of physics, it will preferentially strike the lightening protection rod and be conducted harmlessly to ground through the wire, instead of passing through the building, where it could start a fire or cause electrocution.
A conventional spike lightning protection rod is a single component in a lightning protection system. In such a system, lightening protection rods are placed at regular intervals on the highest portions of a structure, a lightning protection system typically includes a rooftop network of electrical conductors, multiple conductive paths from the roof to the ground earthing, bonding connections to metallic objects within the structure and a grounding network. The rooftop lightning rod is a metal strip or rod, usually made of copper and down path is made by Copper Wires.
Conventional lightning arrester comprises
- Air Termination Network – The primary function of an air terminal or air termination network, is to capture the lightning strike to a preferred point, so as to ensure that the discharge current can be safely directed via the down conductors to the dedicated earthing system.
- Down Conductors – The purpose of a down conductor is to provide a low impedance path from the air termination to the earthing system so that the lightning current can be safely conducted to earth without the development of excessively large voltages.
- Earthing System –In accordance with International Standards the resistance to earth of the lightning protection system measured at any point, should be less than 10 ohms. It is recommended that all individual lightning earths be bonded together to minimize earth voltage potential rise, in turn all lightning earths should be bonded to surrounding facility earths.