How to protect your house from lightning national lightning. Bs eniec 62305 lightning protection general standard. Design procedure risk assessment evaluate the importance and value of the facility. In this study, design and installation processes of a lightning protection system for the hybrid renewable energy system at the ceh are considered. Like many other engineering systems, lightning protection is not necessarily a design preference, but the need for a lightning protection system is determined by the requirements of nfpa 70 and nfpa 780, a. Lightning is the direct cause of over 50 deaths and 400. Standard for the installation of lightning protection. May 02, 2017 the shocking truth about metal buildings in thunderstorms. Contrary to urban myth, steel buildings resist lightning, not attract it. The shocking truth about metal buildings in thunderstorms. Empirical lightning protection classification of buildings. 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. The lightning protection institute is a nationwide not for profit organization founded in 1955 to promote lightning protection education, awareness, and safety. 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.
Pdf lightning protection guide 3rd updated edition. Lightning protection system design certification i certify that the design of the abovementioned lightning protection system complies with the requirements of the building control regulations 2003. During thunderstorms too, high volume of energy is instantaneously released which is more common in nature. In the case of buildings with closed ditches a ring earther is to be installed outside the ditch. Bs eniec 62305 lightning protection general standard principles. Desigr ers thought that protection was not necessary in many cases because the antenna mast was relatively short 10 meters or less. 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. The goal of this course is to learn how to design lightning protection systems. The dissipation of a lightning strike requires correct system design. The loss of historic buildings as a result of lightning strikes makes local front page news every year. Code of practice for the protection of buildings and. The basis of conventional lightning protection technology. The as1768 standard endorsed the lightning safety design based on the.
If national regulations such as building regulations, special regulations or special directives require lightning protection measures, they must be implemented. The lightning protection industry began in the united states when benjamin franklin postulated that lightning was. Industrial commercial lightning protection systems and class ii buildings over 75 tall the same major groups of components are used to install lightning protection systems on industrial. Dec 30, 2015 lightning protection consultants india provides lightning protection design, earthing system design and grounding system design for buildings.
Design and analysis in a sophisticated and flexible cad environment. 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 and systems. This report discusses design applications of lightning protection systems to military tacticalmobile. This standard has a comprehensive risk assessment section that is based on iec standards, well written rules for the design of lightning protection systems, guidance. Lightning protection for buildings energized by renewable energy sources. 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. In this paper, the lightning protection requirements of a typical residential building have been discussed and techniques have been provided to protect the building from both direct and indirect. Lightning protection consultants india provides lightning protection design, earthing system design and grounding system design for buildings. Lightning protection systems on trial building design. In the united kingdom, zurich are prepared to consider all proposals for lightning protection systems which comply with both bs en 62305 for systems and the associated bs en.
Lightning protection for buildings typical down conductor arrangements method 2 lightning protection for building bonding of extraneous equipment lightning protection test points. Structural earthing and lightning protection systems for. 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. Ufc 357501 provides policy and guidance for design criteria and standards regarding static electricity protection, lightning protection systems and. The height of a structure, not the framing material, determines the probability of a direct lightning strike. Designing to the iec 62305 series of lightning protection standards.
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. 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. Figure 33 vertical air termination for protection of explosive stores 61 figure 34 exceptional protection against overvoltlges induced by lightning in incoming supplies to buildings with explosive or highly. Electrical engineers normally are not involved with the details of a system, although they should know its impact on a building s. A proper lightning protection system design is very important to ensure increased protection of a building against lightning and its effects. Pdf lightning protection guide 3rd updated edition adrian. A practical guide to lightning protection and australia and nz.
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. This illustration identifies the components and introduces the basic rules for an. Lightning protection system designing buildings wiki. We use cookies so that we can offer you the best possible website experience. Industrial commercial lightning protection systems. Any grounded object that provides a path to earth will emit upwards positive streamers or fingers of electrical charge. In the united kingdom, zurich are prepared to consider all. Ul marking and application guides are updated as necessary due to new product development. Lightning protection system design and installation. Design consideration of electrical distribution and lightning protection systems for highrise building 111 busbar trunking systems are designed to withstand the effects of shortcircuit currents resulting. 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. Harger has long been one of the leading providers of structural lightning protection for commercial buildings. Figure 33 vertical air termination for protection of explosive stores 61 figure 34 exceptional protection against overvoltlges induced by lightning in incoming supplies to buildings with explosive or highly flammable conten.
Mar 08, 2018 a proper lightning protection system design is very important to ensure increased protection of a building against lightning and its effects. Standard for the installation of lightning protection systems. Design guidelines for lightning protection of pv systems. Commercial and industrial protection from lightning strikes for buildings and site assets. The dehn distance tool makes it possible to calculate the separation distance and to visualise the building as a 3d model. Pdf lightning protection for buildings energized by. Lightning damage thunderstorms and lightning most often occur when the weather is hot and. The purpose of a lightning protection system is to protect buildings from direct lightning strikes and possible fire or from the consequences of lightning currents nonigniting flash.
Pdf lightning protection techniques for rooftop pv systems. Nfpa 780 standard for the installation of lightning protection systems. Before proceeding with the detailed design of a lightning protective system, the following. Today, lightning protection systems are in use on thousands of buildings. Fundamentals of lightning protection systems page 1 of 14 fundamentals of lightning protection systems, edition 1c september 2011. Electrical engineers normally are not involved with the details of a system, although they should know its impact on a building s overall electrical system for example, where a systems conductors should be located to prevent damage to computer equipment. Lightning protection system designing buildings wiki share your construction industry knowledge. Lightning protection overview lightning protection institute. This guidance provides advice on the design of new or improved lightning protection and surge protection systems. Pdf since lightning has no specific path to reach the ground, it may choose to.
Use ac power surge protection at main power entry and critical secondary panels. The height of a structure, not the framing material. History of lightning protection system design in tactical systems. Provide a joint for test purposes at approximately 1m from finished floor level in an accessible location, unless otherwise detailed, on every down conductor. Janakiraman, senior manager product development, obo bettermann india pvt ltd explains the design guidelines. Code of practice for protection of structures against lightning. Ufc 357501 lightning and static electricity protection systems. Design guidelines for proper lightning protection system as. Lightning protection for buildings zurich insurance. Industrial commercial lightning protection systems and class ii buildings over 75 tall the same major groups of components are used to install lightning protection systems on industrial, commercial, and government facilities and structures as are used on residential systems.
Requirements for lightning protection systems, or nfpa 780, standard for the. Lightning protection system design certification i certify that the design of the abovementioned lightning protection system complies with the requirements of the building control regulations 2003, ss. 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. 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. Like many other engineering systems, lightning protection is not necessarily a design preference, but the need for a lightning protection system is determined by the requirements of nfpa 70 and nfpa 780, a lightning risk assessment, and oftentimes the facilitys insurance carrier. Design guidelines for proper lightning protection system. Innovative, installerfriendly components make harger the leading provider of lightning protection equipment. These create a channel of plasma air for the huge downward currents of a lightning strike. Structural earthing and lightning protection systems for building as.
Lightning protection systems are the modern development of the innovation pioneered by benjamin franklin. 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. Ufc 357501 provides policy and guidance for design criteria and standards regarding static electricity protection, lightning protection systems and related. These products are also backed by the foremost lightning protection design department in the world today. The lightning protection institute is a nationwide notforprofit organization founded in 1955 to promote lightning protection education, awareness, and safety. The current standard for lightning protection in australia and new zealand is asnzs 1768. History of lightning protection system design in tactical sstems many older communication systems do not have lightning protection incorporated into their design. To determine the potential for equipment damage or destruction and personnel injury or death from a lightning strike, perform the following risk evaluation. Lightning protection design, earthing system design. Lightning protection harger lightning and grounding. This when designing and installing lightning protection systems, book would not. How steel buildings resist lightning lightning protection. 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 from a building. Design professionals should work with the lightning protection contractor.
Today, lightning protection systems are in use on thousands of buildings, homes, factories, towers, and even the space shuttles launch pad. These products are also backed by the foremost lightning protection design department in. This includes cookies which are necessary for the operation of the website and to manage our corporate. Supporting documentation to demonstrate compliance. A lightning strike can exceed 100 million volt amps. Design the lightning protection system step by step. 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. Pdf lightning protection for buildings energized by renewable. Designing a lightning protection system using the protective angle, mesh and rolling sphere. Location frequency and severity of thunderstorms in area.
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