What is Lightning Arrester? | Types of Lightning Arrester  May 3, 2023adminCommercial A lightning arrester, also known as a surge arrester or a lightning diverter, is a device that protects electrical equipment from overvoltage caused by lightning strikes. It works by providing a low-impedance path for the lightning surge to follow, redirecting it away from the protected equipment. The lightning arrester is typically in connection between the power line and the equipment. For the protection, such as a transformer or a transmission line. When a lightning strike occurs, the arrester conducts the surge current to ground, preventing it from damaging the equipment. There are two main types of lightning arresters: the traditional rod arrester and the newer metal oxide arrester. Rod arresters consist of a metal rod or tube on top of a pole or structure. Whereas the metal oxide arresters use a ceramic housing filled with metal oxide discs.  Lightning arresters are commonly in use power systems, telecommunications, and other applications. Where the equipment is at risk of damage from lightning strikes or other overvoltage events. Ennob specializes in the production of Home Lightning Protection Systems. That utilize a combination of copper and aluminum alloys to create a highly conductive pathway to the ground. This system helps to minimize impedance, thereby safeguarding the electrical system from damage caused by fault currents. Types of a Lightning Arrester In this article we will discuss some prominent types of lightning arresters and the choice of lightning arresters depends upon the following factors: Voltage Level: The voltage level of the system protectes that will determine the type of arrester needed. Frequency: The frequency of the system, whether it is a power system or a communication system, will determine the type of arrester needed. Environment: The location of the system being protected, the weather conditions, and other environmental factors will determine the type of arrester needed. Some of the prominent types of lightning arresters are: Rod-type Lightning Arrester Rod-type lightning arrester is the oldest and most commonly used type of arrester. It consists of a metal rod or tube mounted on top of a pole or structure, which provides a direct path for lightning to ground. The rod is made of copper or aluminum and is usually pointed at the top to facilitate corona discharge, which helps to ionize the air around the rod and create a low-impedance path for the lightning current to follow. The rod is connected to a ground electrode through a conductor, which helps to dissipate the lightning current into the ground. Horn-type Lightning Arrester Horn-type lightning arresters have a horn-shaped metal structure that is designed to create a high-voltage gradient that ionizes the air and provides a path for lightning to ground. The horn is connected to a ground electrode through a conductor. When lightning strikes the horn, the resulting discharge ionizes the air and creates a low-impedance path for the lightning current to follow. Valve-type Lightning Arrester Valve-type lightning arresters use a series of spark gaps and a valve assembly to provide protection against lightning surges. The spark gaps are connected in series with the protected equipment, and the valve assembly is connected to ground. When the voltage across the spark gap exceeds a certain level, the spark gap breaks down and the valve assembly conducts the surge current to ground. Metal Oxide Lightning Arrester Metal oxide lightning arresters are a newer type of arrester that use a ceramic housing filled with metal oxide discs. The metal oxide material has a highly nonlinear resistance that decreases with increasing voltage, providing effective surge protection. The discs are connected in series with the protected equipment, and the assembly is connectng to ground. Hybrid Lightning Arrester Hybrid lightning arresters combine the best features of rod-type and metal oxide arresters, providing superior protection against lightning surges. The arrester consists of a metal oxide disc connected in series with a spark gap and a rod or tube. The spark gap is designed to break down at a lower voltage than the metal oxide disc, providing an initial low-impedance path for the lightning current. If the surge current exceeds the breakdown voltage of the spark gap, the metal oxide disc takes over and provides additional protection. Lightning Arrester for Building Lightning arrester for buildings, also known as a lightning protection system (LPS), is designed to protect the structure and its occupants from the damaging effects of lightning strikes. A lightning protection system typically consists of three main components: air terminals, conductors, and ground electrodes. Air Terminals Air terminals, also known as lightning rods, are on the roof of the building and provide a path for lightning to strike. Air terminals are typically made of copper or aluminum and facilitate corona discharge, which helps to ionize the air and create a low-impedance path for the lightning current to follow. Conductors Conductors connect the air terminals to the ground electrodes. The conductors are typically made of copper or aluminum and are always outside the building. Conductors should be in a straight, vertical line from the air terminals to the ground electrodes and should be always at least 3 feet away from any other metal objects. Ground Electrodes Ground electrodes dissipates the lightning current into the earth. They are typically made of copper or steel and are under the ground. The number and size of ground electrodes depends on the size and type of the building and the soil conditions. In summary, lightning arrester for buildings helps to protect the structure and its occupants from the harmful effects of lightning strikes. It is important to have a proper design to ensure the safety of the building and its occupants.  Installation Lightning Arrester- Guide Installation lightning arresters is a specialized task that should be carried out by trained and experienced professionals. Here are the general steps to follow in the installation process: Site Survey: The first step in the installation process is to conduct a site survey to determine the best location for the lightning arrester. The survey should take into account the size and type of the building. Along with the location of nearby trees or other tall structures, and the soil conditions. Design and Planning: Based on the site survey, the lightning protection system should be designed to provide complete protection for the building. The design should include the placement of air terminals, conductors, and ground electrodes.  Installation of Air Terminals: The air terminals, or lightning rods, are mounted on the roof of the building in a pattern that provides complete coverage. Installation of the air terminals should be in accordance with the manufacturer’s instructions and local building codes. Installation of Conductors: Conductors connect the air terminals to the ground electrodes. Installation of the conductors should be straight and at least 3 feet away from any other metal objects. Installation of Ground Electrodes: The Ground electrodes dissipates the lightning current into the earth. The number and size of ground electrodes depends on the size and type of the building and the soil conditions. Installation of the ground electrodes should be in accordance with the manufacturer’s instructions and local building codes. Testing and Certification: Once the lightning protection system is installed, it should be tested to ensure that it is functioning properly. The system should be certified by a qualified engineer or technician to verify that it meets the appropriate safety standards. Installation of a lightning arrester is a complex process that requires careful planning and execution. Ensuring that the building and its occupants are fully safe from the harmful effects of lightning strikes. It is important to hire trained and experienced professionals to carry out the installation process. Connect with us Submit Form ESE Lightning Arrester, ESE Lightning Arresters, Lightning Arrester, Types of a Lightning Arrester Related Posts  Benefits of ESE Lightning Arresters in Solar Plants January 3, 2024Commercial  Understanding the Threat of Lightning Strikes to Solar Installations September 5, 2023Commercial hemicrthing” or “Maintenance Free Earthing”. We have an integrated infrastruc service-providing company, viz. Designing, Manufacturing, Supply, Installation, Commissioning & Testing