Lightning strikes are very common and have been experienced by everyone.
The early and late rainy seasons are the time when lightning strikes the most. Lightning strikes have been a natural part of the earth since ancient times. Before the advent of the Lightning Arrester, people were still experiencing lightning and thunder.
The lightning bolt was discovered by an American named Benjamin Franklin.
On a rainy day in June 1752, Ben and his son, Billy, experimented with the discovery of a record-breaking lightning bolt that would go down in world history.
The experiment was dangerous, and if the lightning struck the kite, it would kill not only Ben but also Billy. After one electric shock, Ban touched the key, but he did not feel anything.
The next time he saw the lightning, he felt an electric shock in his hand. The lightning struck the wire from the kite and flowed through the wet wire to the lock, so he felt an electric shock.
Ban believed that lightning could be caused by an electric current in a cloud, which he believed would be flowing from an object at a high potential, and that the experiment was successful.
Ban recently installed a metal rod on the roof of his house and connected it to the ground like a lightning rod. Later, lightning strikes were also used in England and around the world.
It is now understood that lightning strikes are caused by friction between millions of clouds or between the earth and the clouds.
When a voltage builds up due to friction between the clouds or the earth and the clouds, it will first hit trees and tall buildings before it reaches the ground.
Lightning strikes last about 100 microseconds, with intervals of 40 to 50 milliseconds at intervals.
Lightning transmission is divided into three parts.
(1) Lightning rod at the top
(2) Wire connecting the ground to the rod
(3) Ground voltage to ride.
What if a power line strikes a building?
The buildings have no choice but to pre-install lightning rods.
MOV Metal Oxide Varistor MOV is a semiconductor device that connects the ground to the ground. A semiconductor can change the current depending on the voltage. This system is also used in lighting transformers.
It is more accurate to call Lightning Arrester also Surge Arrester because it can protect against surges.
Lightning Arrester is used, but its protection area is limited, so it should be calculated and used to cover the entire building.
(The above article is based on my study of Benjamin Franklin’s discovery and use of lightning rods. Lightning Arrester is not a detail.
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