Lightning protection design of solar photovoltaic systems. Location frequency and severity of thunderstorms in area. A copy of the nfpa780 book and a cd on lightning protection. Grey matters has a unique mix of specialist experience covering global lightning protection design solutions. As lightning seeks the path of the least resistance, it naturally tends to follow the shortest way between cloud and earth, such as buildings or towering projections. Design the lightning protection system step by step. Fundamentals of lightning protection systems cedengineering. Equipotential bonding for lightning protection shielding of enclosed spaces avoiding proximity chapter 5. Lightning protection design methodology for a very large non. A proper lightning protection system design is very important to ensure increased protection of a building against lightning and its effects. Where a component of the lightning protection system lps has a primary function, e.
Dec 30, 2015 lightning protection consultants india provides lightning protection design, earthing system design and grounding system design for buildings. This chapter details methods of estimating lightning strike probabilities, the risk associated with this hazard and estimating the cost of this damage extended over the system life. In the real application of lps, there is no known method that. In this case radius of the sphere is calculated using the leader potential concept for calculating striking distance. Despite this, coordination with external lightning protection is necessary. Lightning protection system design and installation. 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. 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 systems i. Any high point in the vicinity such as an electricity pylon or a lightning rod.
Structural earthing and lightning protection systems for. Rods and meshed conductors installation standards the installation of a lightning protection system using rods and meshed conductors must follow the standards iec62305 lightning protection. The complexity and cost of the solution involved to analyze a lightning protection system design in detail. Lightning protection for buildings typical down conductor arrangements method 2 lightning protection for building bonding of extraneous equipment lightning protection test points provide a joint for test purposes at approximately 1m from finished floor level in an accessible location, unless otherwise detailed, on every down conductor.
Periodic updates of this handbook are anticipated as additional test data and new protection materials and techniques are developed. Lightning protection design for a structure using rolling sphere method is undertaken. Method to determine position of airtermination system. Protection currently in place may be fine for normal surges caused by load switching and utility transients, but will not be effective. Physical damage to structures and life hazard software for design and calculation of lightning protection systems when designing lightning protection systems, various parameters must be taken into account. The lightning protection institute is a nationwide notforprofit organization founded in 1955 to promote lightning protection education, awareness, and safety. The information in this volume may be used as a guide when planning lightning and surge. Janakiraman, senior manager product development, obo bettermann india pvt ltd explains the design guidelines.
Lightning protection system can be difficult to retrofit. Designing a lightning protection system using the protective angle, mesh and rolling sphere methods. Lightning protection according to iec 62305 diogo filipe da silva santos thesis to obtain the master of science degree in. Evaluation of rolling sphere method using leader potential.
They are the roof rule method, rolling sphere method and the. Pdf lightning protection guide 3rd updated edition. Request pdf on sep 11, 2001, martin eberle and others published lightning protection design methodology for a very large non rigid airship find, read and cite all the research you need on. Designing to the iec 62305 series of lightning protection standards.
The protective angle design method cannot be used where the. Detailed information to determine zones of protection are found in lightning protection design standards. Lightning protection system manufacturers in india jef. This paper can help engineers design effective lightning.
Bs eniec 62305 lightning protection general standard. Nodal analysis is a method for network analysis used in electrical engineering. The program is made based on the methodology, established in the international standard bs en 623052. Conventional lightning protection systems should be designed. Risk management bs eniec 623052 part 2 risk management approach, does not. Apply all the steps for lightning protection system design process, perform the risk assessment study, size air termination system components, apply methods for the best positioning of air terminals, determine the number of down conductors, design earth termination system, write specifications for the designed lps. The cost data, summarized below, confirm that lightning protection is economical and can be justified on a costtobenefit basis in atrisk buildings. The unavailability data of lightning strikes occurrences and its frequency at telecommunication station. Types of lightning protection systems lps electrical knowhow. Angle method according to this method the protection. This paper can help engineers design effective lightning protection system for pv systems and select appropriate protective devices. Lightning and surge protection of modern electronic system. Apr 06, 2016 eritech system2000 lightning protection products.
Lightning protection design, earthing system design lightning. A hybrid lightning strike protection system carpenter, sletten oct 2014, rev. A constant earthing resistance is assumed for the calculation type b earth. Aug 14, 2017 when considering lightning protection, architects, engineers, safety professionals and building owners typically rely on the nfpa risk assessment methodology to determine the risk of damage due to lightning. Design guidelines for the materials for lightning protection conductors and method for their installation are given in detail in the applicable engineering standards. Fundamentals of lightning protection systems, edition 1c september 2011. Lightning protection theory schirtec lightning protection. The magnitude of lightning strikes peak current is unpredictable. Now the third revised edition of the english lightning protection guide is available. The lightning phenomenon lightning is the phenomenon which accompanies the discharge of atmospheric charges from cloud to cloud or from cloud to earth. 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 substantiation of the lightning protection techniques and practice contained in modern lightning protection standards. Jefs expertise is to provide extensive technical support related to.
It can serve as a useful guide to justify additional cost incurred by additioh. The lightning failure mode of bypass diodes is identified for the first time. Type of constructions b steel framed encased without metal roof as per table multiplying factor 0. Lightning protection design, earthing system design. Calculate lightning protection for building structure. Lightning protection consultants india provides lightning protection design, earthing system design and grounding system design for buildings. Standard for the installation of lightning protection systems. This means if you are looking for an effective lighting design service.
There are three basic methodologies for determining a protection design scheme. Amateur radio station grounding and lightning protection. Bs eniec 62305 lightning protection general standard principles. State of the art for the installation of lightning protection. Calculate no of down conductor for lightning protection area of building structure. 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. Lightning and surge protection basic principles 1 introduction rarely does the power of nature strike an observer more forcibly than the sight for the first time of a tropical thunderstorm in full flow. Free lightning protection design software paradise electric. When considering lightning protection, architects, engineers, safety professionals and building owners typically rely on the nfpa risk assessment methodology to determine the risk of. State of the art for the installation of lightning protection systems 0.
Lightning and surge protection basic principles 1 introduction rarely does the power of nature strike an observer more forcibly than the sight for the first time of a tropical thunderstorm in full. Lightning protection design the conventional way, delivered unconventionally. 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 the earth termination network and earth electrodes. Download free as 1768 lightning protection pdf software. The risk assessment guide is found in the annex l section of the nfpa 780 standard for the installation of lightning protection systems. Introduction to lightning protectionintroduction to lightning protection lightning definitionslightning definitions air terminal a strike termination device that is aair terminal a. Apply all the steps for lightning protection system design process, perform the risk assessment study, size air termination system components, apply methods for the best positioning of air terminals. A full manual analysis of all risks can take tens of hours to complete. General principles bs eniec 623051 risk management bs en.
Lightning does not have to directly strike a facility to do real damage. Design procedure risk assessment evaluate the importance and value of the facility. Basic criteria for protection of structures 41 section 5. Edition, standard for the installation of lightning protection systems and the methodology behind the requirements in various applications. The lightning failure mode of bypass diodes is identi. Protection against lightning a uk guide to the practical. Lightning protection design methodology for a very large. Physical damage to structures and life hazard software for design and calculation. Amateur radio station grounding and lightning protection formation of lightning lightning occurs during nimbostratus clouds in snow storms, dust storms, nuclear explosions and volcanic eruptions. Equipotential bonding for lightning protection shielding of enclosed. Study of lightning safety distance using rolling sphere method. Risk must be assessed in the early stages of structure design to select the level of protection and methodology best suited for each application. Design the lightning protection system 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. Having more than one option in lightning protection methodology, technology and design helps overcome common obstacles to lightning protection system installation such as.
The as1768 standard endorsed the lightning safety design based on the rolling sphere method. A copy of the nfpa780 book and a cd on lightning protection and risk assessment will be included along with the course study materi als. During thunderstorms too, high volume of energy is instantaneously released which is more common in nature. The lightning protection industry began in the united states when benjamin franklin postulated that lightning was electricity, and a metal rod could be used to carry the lightning. Lightning protection system palace of festivals of. Lightning protection design compliant to bs en 62305. According to the international electro technical commission iec before proceeding with lightning protection system design for any object or building, the risk of damage from lightning. It may also be suitable for anyone wishing to demonstrate a greater understanding of lightning protection systems.
Calculate no of down conductor for lightning protection. Requirements for lightning protection systems, or nfpa 780, standard for. A lightning ground system should be capable of dispersing large amounts of electrons from a strike over a wide area with minimum ground potential rise. Also, in article introduction to lightning system design part two, i answered the following questions. Design guidelines for proper lightning protection system. During the second quarter of 2015, lightning protection installers were asked to submit bids for installation of lightning protection on three hypothetical projects. Lightning protection performance of a practical pv system is investigated. A grounding electrode system designed to provide a sufficiently low resistance connection to earth.
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