Lightning does not have to directly strike a facility to do real damage. External lighting protection ms iec 62035 part 3 three components of external lightning protection. Traditional lightning protection has sought to collect and divert the energy of a lightning strike into the ground. The resistance between these components and the lightning protection system shall be less than one 1 ohm. The former event is a cloudtocloud discharge, while the latter, known as. Power system surge protection seminar arresterworks page2 2 day seminar overview lightning is the second or third most significant. Unless special lightning protection steps are taken to. The standards in the united states for lightning protection systems are the national electrical code nec, the national fire protection association 78, lightning protection code nfpa 78, and underwriters laboratories 96a, standard for installation requirements for lightning protection systems, ul 96a. Lightning protection seminar report pdf seminars topics. Lightning protection using lfam seminar report, ppt for ece. The documentations also focused on the use of an insulator with characteristic lfa ilfa. He is chair of the iec sc37a technical advisory group reporting to the standards council of. The basis of conventional lightning protection technology. Also explore the seminar topics paper on iris scanning with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year electronics and telecommunication engineering or ece students for the year 2015 2016.
Electrical earthing grounding systems a technical report and a short course. Lightning is an electrical discharge between cloud and the earth, between clouds or between the charge centers of the same cloud. Technical seminar for cathodic protection to gogc design. 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 away. Lightning protection using lfam seminar report free download as word doc. Also get the seminar topic paper on lightning protection using lfam with abstract or synopsis. Installations not directly related to those areas and structures housing such installations can be protected against lightning by the provisions of this standard. Lightning protection using lfam 22,ask latest information,abstract, report,presentation pdf,doc,ppt, lightning protection using lfam 22 technology discussion, lightning protection using lfam 22 paper presentation details. In seminars we give instructions and training for the practical. Sep 19, 2016 the lightning protection institute is a nationwide notforprofit organization founded in 1955 to promote lightning protection education, awareness, and safety. Design of lightning protection systems dehnsupport toolbox software. Services with lecs unique combination of experienced consultants, engineers and integrated services, you can rely on expert advice backed by over 40 years of experience.
Get lightning protection using lfam seminar report and ppt in pdf and doc. Dec 17, 2015 get lightning protection using lfam seminar report and ppt in pdf and doc. Seminar on lightning of building linkedin slideshare. You receive a formal report sometimes with site specific drawings of recommended designs as well. A new simple, effective and inexpensive method for lightning. Army 5 and air force 6 documents provide specific lightning protection and grounding systems test procedures. This seminar report describes the long flashover arrester lfa, method for lightning protection, working principle, design of lfam, its main applications and laboratory test results. Air termination, down conductors and earthing rolling sphere protection angle and mesh size according to lps i, ii, iii or iv. In some cases, required procurement lightning protection installation, which. Fundamentals of lightning protection national lightning. Use current division to control the dissipation of lightning strike energy on an antenna tower grounding system through multiple paths. Lightning protection using lfam,ask latest information,abstract,report,presentation pdf,doc,ppt,lightning protection using lfam technology discussion,lightning protection using lfa. In a lightning protection system, a lightning rod is a single component of the system.
Lightning protection engineering seminar according to nfpa780 about the seminar this comprehensive 2day seminar is designed for engineers, architects and others interested in covering the requirements of the national fire protection association nfpa 780 2008. Lightning arrester full report engineering seminar topics. The lightning rod requires a connection to earth to perform its protective function. Lightning protection using lfam easy seminar topics. Technical seminar for cathodic protection to gogc design unit specialists dr. Power systemlightning protection lightning arrester slide 24. Explore lightning protection using lfam with free download of seminar report and ppt in pdf and doc format. Free download complete engineering seminar lightning protection using lfa lightning frequency arrester seminar report pdf. Lightning protection for explosive facilities technical.
When a lightning strike hits, an overvoltage can rise up from the ground attempting to find a more favourable path to ground. This document is meant as a template to assist in the development of your own lighting certification process. Use current division to control the dissipation of. Lightning protection equipment may shunt current, block energy from traveling down the wire, filter certain frequencies, clamp voltage levels, or perform a combination of these tasks. Lightning protection guide is available as printed book, as pdf file, on cd or at. Protection currently in place may be fine for normal surges caused by load switching and utility transients, but will not be effective. Power systemlightning protection earthing screen a grid of earthed copper conductors criss crossing the substation provide a low resistance path for lightnings. Lightning protection using lfa lightning frequency arrester. Lightning protection engineering seminar according to nfpa780 about the seminar this comprehensive 2day seminar is designed for engineers, architects and others interested in covering. To understand how damage can occur and to learn defensive measures that can be. For the protection of lines against direct lightning strokes, the arresters are connected between the poles and all of the phase conductors in parallel with the insulators. Lightning phenomenon, effects and protection of structures. This lightning protection study was done based on the protection of equipment in the.
Aside from this introduction and the mock representative name of the building building a, this document is nearly identical to a lightning certification report issued by the engineering directorate at lawrence livermore national laboratory. 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. This is the reason why the calculation takes into account the critical values of the lightning current steepness i l l,cr at which the insulator flashes over for a given set. For three decades, the lightning protection guide from dehn has been the trademark for practiceoriented technical literature in the fields of lightning and surge protection for buildings, installations. It provides a more detailed and scientific evaluation of your sites exposure and options for protection. Feb 17, 2016 a good lightning protection system helps provide that path, thus reducing the probability that damage will occur to people or animals 16. Lightning protection using lfam free download as powerpoint presentation. Lightning and surge protection of modern electronic system. Grounding system full seminar reports, pdf seminar abstract, ppt, presentation.
Nfpa 781986 is published in volume 3 of the 1988 national fire codes and in separate pamphlet form. Lightning damage to equipment results in losses exceeding twentysix billion dollars annually in north america, and nearly three times that worldwide with more than 150 strikes per second. Standard for the installation of lightning protection systems. These seminars can last from 60 minutes or be extended to several hours depending on the subject and the audience requirements. The lightning mechanism lightning is an electrical discharge either between the opposite charged regions within a cloud or between the lower. Iris scanning seminar report, ppt, pdf for ece students. Protection against transients lightning lighting arrester authorstream presentation. Lightning protection guidelines for aerospace vehicles.
Scribd is the worlds largest social reading and publishing. How to protect your house from lightning national lightning. Pdf electrical earthing grounding systems a technical. Afp 98 6, 23 states that the electrical test procedures. Voltage clamping devices capable of handling extremely high amperages of the surge, as well as reducing the extremely fast rising edge dvdt and didt of the. Scribd is the worlds largest social reading and publishing site. Services lightning protection by lightning eliminators and. The following lightning protection study, with its associated drawings, is intended to display the level of protection and suggested lightning protection that should be added to the new ring bus substation configuration in the scope of the umkc substation project. Separate the antenna tower from the equipment building by a minimum of 30 feet. Presentations ppt, key, pdf logging in or signing up. Lightning is a huge spark and that take place when clouds are charged to at a high potential with respect to earth object e. Lightning protection using lfam seminar report scribd. An lfam arrester consists of two cables like pieces. While this may avoid some of the worst effects of a direct strike, it has some serious drawbacks.
Lightning protection for engineers seminar national. Lightning protection using lfam seminar report, ppt, pdf for. At this location, with the arrester grounded directly at the tank,frame or other metallic structure which supports the insulated parts, the surge voltage applied to the insulation will be limited to the. Also get the seminar topic paper on lightning protection using lfam with abstract or synopsis, documentation on advantages and disadvantages, presentation slides for ieee final year electronics and telecommunication engineering or ece students for the year 2016 2017. Grounding system full seminar report, abstract and presentation. Also explore the seminar topics paper on lightning protection using lfam with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year electronics and telecommunication engineering or ece students for the year 2015 2016. The ideal location for lightning arresters,from the standpoint of protection, is directly at the terminals of the equipment to be protected.
Lightning protection using lfam,ask latest information,abstract, report,presentation pdf,doc,ppt, lightning protection using lfam technology discussion, lightning protection using lfam paper presentation details. Services lightning protection by lightning eliminators. Explore iris scanning with free download of seminar report and ppt in pdf and doc format. Lightning arrester full report lightning arresters are protective devices for limiting surge voltages due to lightning strikes or equipment faults or other events, to prevent damage to equipment and disruption of service. May 02, 2015 introduction to lightning protectionintroduction to lightning protection lightning factslightning facts globally some 2000 on going thunderstormsglobally some 2000 on going thunderstorms cause about 100 lightning strikes to earth eachcause about 100 lightning strikes to earth each second. Very valid questions and ones that every new surge protection engineer should ask 3. A certificate andor test report is not available for all pro ducts. Seminar report on protection of lightning arrester scribd. Nlsi promotes proactive defenses to mitigate the effects of lightning hazards. Search in indelec catalogs and technical brochures on directindustry and find the information you need in 1 click. Effect of lightning on building and its protection measures international journal of engineering and advanced technology ijeat issn. This applies whether the source of the disturbance is lightning, powersystem.
A lightning arrester alternative spelling lightning arrestor also called lightning diverter is a device used on electric power systems and telecommunication. There is also a heavy probability of a steady power arc, which brings about quasistationary overvoltages and equipment damage and necessitates disconnection of the line and thus load shedding. Article lightning protection pdfs lightninfg eliminators. The voltage rate of rise u l is proportional to steepness of the lightning current. The method suggested is a simplified discharge circuit which consists of a long surface flashover discharge element, called long flashover. Lightning protection seminar report pdf seminar topics. Materials used shall be resistant to corrosionmaterials used shall be resistant to corrosion aa coppercopper bb copper alloyscopper alloys cc aluminumaluminum i. Engineering seminar topics, latest seminar topics, popular seminar topics, mechanical seminar topics, computer seminar topics, eee seminar topics, topics for seminars, technology seminars. Seminar lightning protection free download as powerpoint presentation. Lightning protection using lfa lightning frequency. Houston chroniclefuel fix some companies dont wait for lightning to strikemarch 20. Lightning protection using lfam 22,ask latest information,abstract,report,presentation pdf,doc,ppt,lightning protection using lfam 22 technology discussion,lightning protection using. Also explore the seminar topics paper on lightning protection using lfam with.
Seminar report on protection of lightning arrester free download as word doc. Our lightning protection systems training course is focused at companies who own or maintain wireless communications and broadcast towers and their antennas. Lightning protection using lfam seminar report, ppt. Level of external lighting protection based on risk analysis lps i, ii, iii or iv 3. Lightning protection overview lightning protection institute. Jan, 2018 for the protection of lines against direct lightning strokes, the arresters are connected between the poles and all of the phase conductors in parallel with the insulators. National lightning safety institute provides expert training, consulting, education, videos and witness service on lightning safety for buildings and critical facilities, both government and commercial. The lightning mechanism lightning is an electrical discharge either between the opposite charged regions within a cloud or between the lower region of a cloud and the ground. The following lightning protection study, with its associated drawings, is intended to display the level of protection and suggested lightning protection that should be added to the new ring bus substation. Also explore the seminar topics paper on iris scanning with abstract or synopsis, documentation on. Lightning protection using lfam seminar report, ppt, pdf. These seminars can last from 60 minutes or be extended.
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