Conventional Lightning Protection System As per IEC62305 is an essential component of flat tape conventional lightning protection system. An air terminal or air termination network is designed to capture the lightning strike to a desired point, so that the discharge current can be safely and efficiently passed through the down conductors to the dedicated earthing system.
The down conductor gives a low impedance path from the air termination to the earthing system, in order to safely conduct the lightning current to earth without the development of significantly large voltages. The route of down conductor must be direct to the earth and there must be no sharp bends or turns, so the risk of side flashing where impedance / inductance is accelerated under impulse conditions can be minimized.
There must be a separate earthing system at each down conductor with a provision for the disconnection of each down conductor from the earthing system for the purpose of testing. Lightning protection system's resistance measured at any point must be less than 10 ohms, according to the International Standards. The potential rise of earth voltage can be minimized by boding together individual lighting earths, and these lighting earths must be bonded to surrounding facility earths.
Bonding to avoid Side flashing:
Lighting protection system must be bonded to all metal work in a building, for instance water pipes, gas pipes, AC units, metal roofs/ cladding, etc.
The most common design method employed by lightning protection standards worldwide is the Rolling Sphere Method. It is based on the electro-geometric model which creates a link between peak current delivered by a lightning strike and “striking distance”. The rolling sphere method design involves rolling of an imaginary sphere of typically 45 metres over the structure to be protected. All structure points that are in contact with the sphere are the points that require protection, while the rest areas of the structure are regarded safeguarded.
- It is made in compliance to International Standards, like IEC 62305, Australian / New Zealand Standard AS/NZ 1768-2007 and British Standard BS EN 62305
- Wide range of conductors, connectors, air terminals, bases and fasteners
- It can be conveniently assembled and installed
- Lighting Protection Material: Copper-Clad Steel