Introduction
Lightning is one of the natural phenomena that occurs due to severe electrical discharge between clouds or between cloud and earth. The strike of lightning with buildings, industrial equipment and infrastructures can bring heavy financial and even human losses. To prevent these dangers, using a lightning tower as a safety solution is necessary. These structures play a vital role in conducting the energy of lightning to the ground and preventing damage to structures and sensitive equipment.
What is a lightning tower?
A lightning tower is a metallic structure that is usually installed at a specific height of a building or environment to be the first point of lightning strike. This tower conducts the electrical current of lightning to the ground and prevents its transfer to buildings and people.
Its operation is based on Faraday principle and electrical charge conduction; meaning it collects the energy of lightning and transfers it through special cables and the earthing system to the ground.
Main components of a lightning tower
A lightning tower consists of several key parts:
Rod or tip of lightning arrester: the upper part of the tower which is designed sharp and conductive. This part is the first point that absorbs the electrical discharge.
Body of the tower: the metallic structure that places the rod in a suitable height.
Conductor wire: copper or aluminum cable that transfers the lightning current from the tower to the earthing system.
Earthing system: a network of plates and metallic rods buried in the ground that safely discharges the lightning energy into the soil.
Types of lightning towers
Lightning towers depending on design and application are divided into several types:
Simple lightning rod (rod type)
The simplest type consisting of a sharp metallic rod, mostly used for small buildings.Advanced lightning arrester (Early Streamer Emission – ESE)
This model has special technology that predicts the discharge time of lightning and before the direct strike, attracts the electric field toward itself. ESE equipped towers have more coverage.Mesh lightning tower
These towers are made from combination of several metallic rods and are usually used in large industrial projects or refineries.
Applications of lightning towers
Lightning towers are used in various fields, including:
High-rise residential buildings
Telecommunication towers and antennas
Power plants and substations
Refineries and oil & gas industries
Industrial workshops and factories
Data centers and internet servers
Military and security facilities
Advantages of using lightning towers
Installing a lightning tower has many advantages, including:
Protection of human life against electric shocks caused by lightning
Prevention of fire and explosion in buildings and industrial centers
Increasing safety of electronic equipment such as servers, telecommunication systems and medical devices
Reducing financial damages caused by lightning
Creating peace of mind for residents of buildings and industry staff
Important points in installing a lightning tower
For a lightning tower to have effective performance, some points are necessary:
Proper height: the tower must be installed in the highest point of the structure.
Coverage distance: the protective radius of each tower must be calculated proportional to its height.
Quality of earthing: the earthing system must be designed with resistance less than 5 ohm.
Quality materials: using metals resistant to corrosion and moisture has high importance.
Periodic inspection: towers and earthing system must be regularly tested and checked.
Cost and factors affecting the price of lightning tower
The price of lightning tower depends on various factors, including:
Type of tower (simple or ESE)
Height and dimensions of tower
Material and quality of used metals
Type of earthing system
Installation and maintenance cost
In general, the cost of a lightning tower is very small compared to the damages of lightning and is considered as an investment in safety.
Conclusion
Lightning can be a serious threat for structures, industrial equipment and even human lives. Installing a lightning tower is the best and safest method for protection against this natural phenomenon. Choosing the suitable type of tower, principled design of earthing system and proper maintenance play an important role in increasing safety and reducing risks.
Frequently Asked Questions (FAQ)
1. Is lightning tower necessary for residential buildings?
Yes, especially in high areas or regions with frequent lightning, installation of lightning arrester for buildings is necessary.
2. What is the difference between simple lightning arrester and ESE?
Simple arrester only absorbs lightning current, but the ESE model detects the electric field faster and provides wider protection coverage.
3. How often must lightning tower be checked?
It is better that once a year the earthing system and tower be tested and inspected by experts.
4. Does lightning tower prevent the occurrence of lightning?
No, lightning tower only provides a safe path for discharging the lightning energy to the ground and does not prevent its occurrence.
