The basis of conventional lightning protection technology. Location frequency and severity of thunderstorms in area. Use ac power surge protection at main power entry and critical secondary panels. Harger has long been one of the leading providers of structural lightning protection for commercial 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 flow. The dehn distance tool makes it possible to calculate the separation distance and to visualise the building as a 3d model.
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. History of lightning protection system design in tactical systems. Pdf lightning protection techniques for rooftop pv systems. Pdf lightning protection for buildings energized by. Pdf lightning protection for buildings energized by renewable. Lightning protection harger lightning and grounding. Standard for the installation of lightning protection. The lightning protection institute is a nationwide not for profit organization founded in 1955 to promote lightning protection education, awareness, and safety. The loss of historic buildings as a result of lightning strikes makes local front page news every year.
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. For a finite period, bs eniec 62305 and bs 6651 ran in parallel, but as of august 2008, bs 6651 has been withdrawn and now bs eniec 63205 is the. Supporting documentation to demonstrate compliance. 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. Lightning protection consultants india provides lightning protection design, earthing system design and grounding system design for buildings.
Lightning is the direct cause of over 50 deaths and 400. Before proceeding with the detailed design of a lightning protective system, the following. 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. Any grounded object that provides a path to earth will emit upwards positive streamers or fingers of electrical charge. Design the lightning protection system step by step. May 02, 2017 the shocking truth about metal buildings in thunderstorms. 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. Requirements for lightning protection systems, or nfpa 780, standard for the. 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. The height of a structure, not the framing material, determines the probability of a direct lightning strike. The lightning protection industry began in the united states when benjamin franklin postulated that lightning was. Pdf lightning protection guide 3rd updated edition.
Fundamentals of lightning protection systems page 1 of 14 fundamentals of lightning protection systems, edition 1c september 2011. This report discusses design applications of lightning protection systems to military tacticalmobile. Design and analysis in a sophisticated and flexible cad environment. 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 for buildings typical down conductor arrangements method 2 lightning protection for building bonding of extraneous equipment lightning protection test points. Lightning protection overview lightning protection institute. 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. Ufc 357501 provides policy and guidance for design criteria and standards regarding static electricity protection, lightning protection systems and related. Pdf since lightning has no specific path to reach the ground, it may choose to. These create a channel of plasma air for the huge downward currents of a lightning strike.
Electrical engineers normally are not involved with the details of a system, although they should know its impact on a building s. Design procedure risk assessment evaluate the importance and value of the facility. How to protect your house from lightning national lightning. 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.
Lightning protection for buildings energized by renewable energy sources. During thunderstorms too, high volume of energy is instantaneously released which is more common in nature. The as1768 standard endorsed the lightning safety design based on the. Designing to the iec 62305 series of lightning protection standards. To determine the potential for equipment damage or destruction and personnel injury or death from a lightning strike, perform the following risk evaluation. In this study, design and installation processes of a lightning protection system for the hybrid renewable energy system at the ceh are considered. Pdf lightning protection guide 3rd updated edition adrian. The height of a structure, not the framing material. The shocking truth about metal buildings in thunderstorms.
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. Lightning protection system designing buildings wiki. Today, lightning protection systems are in use on thousands of buildings, homes, factories, towers, and even the space shuttles launch pad. Industrial commercial lightning protection systems.
The goal of this course is to learn how to design lightning protection systems. 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. Mar 08, 2018 a proper lightning protection system design is very important to ensure increased protection of a building against lightning and its effects. Janakiraman, senior manager product development, obo bettermann india pvt ltd explains the design guidelines. If national regulations such as building regulations, special regulations or special directives require lightning protection measures, they must be implemented. 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. Innovative, installerfriendly components make harger the leading provider of lightning protection equipment. Standard for the installation of lightning protection systems. 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. 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. These products are also backed by the foremost lightning protection design department in the world today. 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. 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.
Ul marking and application guides are updated as necessary due to new product development. Code of practice for the protection of buildings and. Lightning protection systems are the modern development of the innovation pioneered by benjamin franklin. Bs eniec 62305 lightning protection general standard principles. History of lightning protection system design in tactical sstems many older communication systems do not have lightning protection incorporated into their design. Today, lightning protection systems are in use on thousands of buildings. Lightning damage thunderstorms and lightning most often occur when the weather is hot and. This includes cookies which are necessary for the operation of the website and to manage our corporate. 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.
In the case of buildings with closed ditches a ring earther is to be installed outside the ditch. 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. Nfpa 780 standard for the installation of lightning protection systems. Design guidelines for proper lightning protection system as. The current standard for lightning protection in australia and new zealand is asnzs 1768. Designing a lightning protection system using the protective angle, mesh and rolling sphere. In the united kingdom, zurich are prepared to consider all. 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. 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. Provide a joint for test purposes at approximately 1m from finished floor level in an accessible location, unless otherwise detailed, on every down conductor. A proper lightning protection system design is very important to ensure increased protection of a building against lightning and its effects. Structural earthing and lightning protection systems for.
Commercial and industrial protection from lightning strikes for buildings and site assets. The dissipation of a lightning strike requires correct system design. 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. We use cookies so that we can offer you the best possible website experience. This illustration identifies the components and introduces the basic rules for an. 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. 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. Code of practice for protection of structures against lightning. These products are also backed by the foremost lightning protection design department in. The lightning protection institute is a nationwide notforprofit organization founded in 1955 to promote lightning protection education, awareness, and safety.
A lightning strike can exceed 100 million volt amps. Lightning protection for buildings zurich insurance. Bs eniec 62305 lightning protection general standard. Design professionals should work with the lightning protection contractor. Design guidelines for proper lightning protection system. This when designing and installing lightning protection systems, book would not. Lightning protection system designing buildings wiki share your construction industry knowledge. 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 protection design, earthing system design. Installations not directly related to those areas and structures housing such installations can be protected against lightning by the provisions of this standard. How steel buildings resist lightning lightning protection. 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.
Empirical lightning protection classification of buildings. This guidance provides advice on the design of new or improved lightning protection and surge protection systems. 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. Contrary to urban myth, steel buildings resist lightning, not attract it. A practical guide to lightning protection and australia and nz. Lightning protection system design and installation. Ufc 357501 lightning and static electricity protection systems.