To calculate the different radii of protection of a ese lightning rod, we must know the variables involved in the formulation. Calculate lightning protection for building structure electrical. Ieee guide for direct lightning stroke shielding of substations 1. Design calculations of lightning protection systems part. Knowing the steps of lightning protection system design process, knowing the definitions of main terms in lightning protection system design process, knowing iec 623052 method of risk. A practical guide to lightning protection in australia and new zealand author.
Higher the lighting strike density, higher the probability of lightning strike which needs higher level of lightning. Desigr ers thought that protection was not necessary in many cases because the antenna mast was relatively short 10 meters or less. Calculate lightning protection for building structure. For a finite period, bs eniec 62305 and bs 6651 ran in parallel, but as of august 2008, bs 6651 has been withdrawn and now bs eniec 63205 is the. Design the lightning protection system step by step. Design guidelines for lightning protection of pv systems eng460 engineering thesis final report mick constable august 2012 to november 20 a report submitted to the school of engineering and. This calculation accounts for the evidence that objects that are higher than their surroundings attract lightning. British standards can be obtained in pdf or hard copy formats from. The basis of conventional lightning protection technology. Lightning protection initially as part of an nfpa task force, since disbanded assembled for the purpose of responding to the nfpa standards committee decision 0030, specifically the request for technical.
History of lightning protection system design in tactical sstems many older communication systems do not have lightning protection incorporated into their design. Pdf since lightning has no specific path to reach the ground, it may choose. Furthermore, it defines the relationships between damage and loss that form the basis for the risk assessment calculations in part 2 of the standard. Rolling spheres method for lightning protection epow 6860 surge phenomena fall 2007 joe crispino 1. In addition to these, there may be legislation or rules of each country that must be taken into account. Lightning protection systems external lightning protection air termination systems conductors earthing shielding of enclosed spaces avoiding proximity internal lightning protection surge. The protection calculation of large complete substations, such as the 21bay substation below with 46 lightning rods, is just as feasible as the combined calculation of lightning arresters comprising of rods and wires. Lightning protection system components are intended to be installed and used in accordance. Lightning protection calculation lightning protection. Design calculations of lightning protection systems part scribd. Design guidelines for proper lightning protection system. Lightning protection earthing valid as of january 1, 2019. Bs eniec 62305 lightning protection general standard. The lightning protection institute is a nationwide notforprofit organization founded in 1955 to promote lightning protection education, awareness, and safety.
Bs eniec 62305 lightning protection standard the bs eniec 62305 standard for lightning protection was originally published in september 2006, to supercede the previous standard, bs 6651. Design guidelines for lightning protection of pv systems. The standards define an effective lightning protection system as a set of equipment and devices to capture never to attract lightning and conduct it safely to ground. A practical guide to lightning protection and australia and nz. A proper lightning protection system design is very important to ensure increased protection of a building against lightning and its effects. Ieee std 9981996, ieee guide for direct lightning stroke. Designing to the iec 62305 series of lightning protection standards. Location frequency and severity of thunderstorms in area. Design guidelines for lightning protection of pv systems eng460 engineering thesis final report mick constable august 2012 to november 20 a report submitted to the school of engineering and energy, murdoch university in partial fulfilment of the. Installations not directly related to those areas and structures housing such installations can be protected against lightning by the provisions of this standard. The unavailability data of lightning strikes occurrences and its frequency at telecommunication station. Install a combination of lightning masts and shield wires that provides adequate lightning strike coverage. Risk assessment calculator, maxwell lightning protection co.
It is the measure of lightning strikes per kilometre square per year in the particular area. Lightning protection guide is available as printed book, as pdf fi le, on cd or at. The need for an international standard on lightning. Evaluation of rolling sphere method using leader potential concept. In the field of electrical protection there is a method of electrical protection of buildings against atmospheric discharges lightning protection called the electrogeometric method or the rolling. Lightning protection for a house or building usually consists of 3 components. The primtech lightning protection calculation can accommodate lightning protection rods and wires as lightning arresters. Lightning protection systems with nonradioactive ionization device. Periodic inspection of earthing and shortcircuiting devices. Calculate no of down conductor for lightning protection. Design calculations of lightning protection systems part thirteen in article design calculations of lightning protection systems part two. Journal of lightning research, volume 3, 2007, pages 19. If you select yes then proceed with calculation steps. Structural earthing and lightning protection systems for.
This guide is designed to assist in that determination. Type of constructions b steel framed encased without metal roof as per table multiplying factor 0. Some equipment facilities are more at risk from a lightning strike due to many factors such as the the region where the facility is located, the construction of the building and. Costeffectiveness calculation for lightning protection systems. Pdf lightning protection guide 3rd updated edition. A guide to bs en 62305 protection against lightning. Lightning protection for offshore oil installations. The goal of this course is to learn how to design lightning protection systems.
The calculation assumes that all the ther mal energy is generated by the ohmic resistance of the com ponents of the lightning protection system. Standard for the installation of lightning protection systems. Study of lightning safety distance using rolling sphere method. Calculate whether lightning protection is required or not for following building. Fundamentals of lightning protection systems page 1 of 14 fundamentals of lightning protection systems, edition 1c september 2011. A risk assessment based on actual lightning exposure design of the air termination network and downconductors di fth tht i ti t k d thdesign of.
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