What is the purpose of installing lightning arresters in towers?

What is the purpose of installing lightning arresters in towers?

Their purpose is to limit the rise in voltage when a communications or power line is struck by lightning or is near to a lightning strike.

What is the purpose of lightning protection?

The function of an external lightning protection system is to intercept, conduct and disperse a lightning strike safely to earth. Without such a system a building’s structure, electronic systems and the people working around or within it are all at risk.

How can we protect our towers from lightning?

The traditional approach to lightning protection on towers is to have a lightning rod on the top of the tower and a dedicated down conductor comprised of bare cable or tape that is installed on the tower to connect the lightning rod to the ground.

Why is a lightning arrester used in many large buildings?

A lightning protection system is designed to protect a structure from damage due to lightning strikes by intercepting such strikes and safely passing their extremely high currents to ground. Lightning protection systems are used to prevent lightning strike damage to structures.

How do lightning arresters work?

Though the real big difference is simple: an arrester is charged and “operates” when working, while the rod simply attracts and diverts incoming lightning. When potentially dangerous lightning strikes, the arrester activates and diverts the lightning to ground, where it will disperse harmlessly.

Why do lightning arresters fail?

In most scenarios, failure occurs due to dielectric breakdown, whereby the internal structure has deteriorated to the point where the arrester is unable to withstand applied voltage, whether normal system voltage, temporary power frequency overvoltage (e.g. following external line faults or switching) or lightning or …

Who invented lightning?

The evolution of the original lightning bolt: Nikola Tesla Yet almost 300 years later, there are many lightning rods around the world that continue being used exactly how he designed them. A metal bar with a copper tip, the conduction line also has copper and an underground dissipater.

Does earthing protect from lightning?

As a general term, a lightning arrester or lightning arrestor is a conductive device that allows lightning to ground quickly with the help of low resistance earthing. It has the ability to ground the potential charges which occur during lightning.

Do mobile towers attract lightning?

As said some years ago by US National Oceanic and Atmospheric Administration (NOAA) [www.noaanews.noaa.gov/stories2006/s2645.htm] saying lightning is not attracted to people carrying mobile phones: “People are struck because they are in the wrong place at the wrong time. The wrong place is anywhere outside.

How does a lightning tower work?

A series of copper strips run the length of the Tower. Copper is very conductive and allows electrons to move easily through it. These strips feed into massive grounding rods buried below ground level. When lightning does strike the Tower, the electrical discharge runs through the wires and diffuses into the ground.

What is lightning arrester for building?

A lightning arrester rod or a lightning conductor is a metal rod that is installed on a building to protect it from thunderstorms & lightning strikes. This lightning arrester is made from copper & brass alloy, which is the best conductor of electricity. As such, it has a very high ground coverage of up to 60 meters.

Where are surge arresters used?

These are protective devices used to limit the voltage on apparatus by discharging surge current. The applications of surge arresters mainly include protecting homes to substations. These are mounted on CBs (circuit breakers) in homes, pad-mounted, on pole-mounted transformers and substations.