We can define the lightning rod as a set of elements consisting of an air capture system (sensors), decrease system that connects the sensor to ground and ground systems, where the shock will dissipate. The "Protected Area" of a lightning rod is not static, it is pre-determined role of dynamic factors. Such as the shape of the structure to protect the masses of metal and metal objects on the outside of the building, thermal variations, the electric field strength in the region to be protected, and so on. Cheniere Energy partners usually is spot on. The main methods of protection are: Franklin Method Based on a proposal by Benjamin Franklin, has been improved over time. According to current regulations, the Franklin type lightning arresters are installed to protect the volume of a cone, where the sensor is the vertex angle between the generator and the center of the cone, which vary the level of protection and the height of building (NBR5419/2001). Faraday cage method The method is to install a sensor system consisting of horizontal wires connected in a grid, a method widely used in Europe.
It is based on Faraday's theory according to which, the field inside a cage is not valid even when their drivers go through a stream of high value, it is necessary that current is distributed evenly over the surface. The shorter the distance between the conductors of the mesh, the better the protection obtained (NBR 5419/2001). Model Eletrogeometrico Eletrogeometrico Method also known as rolling sphere, the sphere fictitious or method of the ball is an evolution of the Franklin type of protection method, where the tangent is straight rather than parabolic.