Ieee guide for direct lightning stroke shielding of substations 1. The aim of the research is to evaluate the local lightning activity and to design. Bs eniec 62305 lightning protection general standard. Lightning protection system for the whole area of main office building are. Our software opr designer is able to design a complete lightning protection.
Guidelines for the design, construction, maintenance and inspection of lightning protection systems of the standard. Calculate lightning protection for building structure. Figure 2 shows the elevation and the plan of this building. Basic criteria for protection of structures 41 section 5. The basic principles can be summarised as a building needs a lightning protection system when it reaches into air which is subject to high flash density or. Figure 3 shows the design calculated by ericos lightning protection system design lpsd software depicting the locations of air. Calculate whether lightning protection is required or not for following building. The dissipation of a lightning strike requires correct system design. Code of practice for the protection of buildings and.
Design to lightning standard, nfpa78008 thomas mason, p. Trends in systems design there are many new factors to consider in the design of power distribution systems. Replaces e1, design to lightning standard, nfpa78008. Rather, it provides specified pathways on which lightning can travel, carrying the destructive power of. Typically, outdoor cables need to enter the building, terminate onto a grounded device for lightning protection, and cross connect onto terminated indoor cables that will pass onto the. A practical guide to lightning protection and australia and nz. The standards define an effective lightning protection system as a set of equipment and devices to capture never to attract lightning and conduct it.
How to protect your house from lightning national lightning. The separation distances are calculated and shown as a 3d building model after selecting the class of lps. Safeguarding your electrical systems why is transient overvoltage protection so important. Ieeeias atlanta section electrical drawing preparation.
Pdf external lightning protection system for main office building. Lightning is the direct cause of over 50 deaths and 400. Opr lightning protection systems external lightning. All world standards relating to lightning protection cover the topic of structural lightning protection extensively. 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. Now the third revised edition of the english lightning protection guide is available. The dehn distance tool makes it possible to calculate the separation distance and to visualise the building as a 3d model. Grounding plans lightning protection nfpa 780 standard for the installation of lightning protection systems chapter 4 protection for ordinary structures 4. Design the lightning protection system step by step. This manual is intended as a guide for electrical engineers and designers hereafter. A direct strike to a building or structure will seek a path to ground either.
Additionally it documents the use of the developed tools to conduct a lighting protection assessment of the recently constructed murdoch engineering building, which. In essence, structural lightning protection can no longer be considered in isolation, protection. History of lightning protection system design in tactical sstems many older communication systems do not have lightning protection incorporated into their design. Calculate no of down conductor for lightning protection area of building structure. Designing to the iec 62305 series of lightning protection standards. Antenna system bonding and grounding requirements in the. 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. 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. Detailed information to determine zones of protection are found in lightning protection.
Design professionals should work with the lightning protection contractor. The nec is not a design specification, and it does not. Course content graphic overview the primary goal of this course is to learn how to design lightning protection. A lightning strike can exceed 100 million volt amps. Lightning protection design, earthing system design. Once the need for lightning protection has been established, loss of life and property can be avoided by the installation of an approved lightning protection system. A lightning protection system does not attract, repel, or prevent a lightning strike. Electrical engineers normally are not involved with the details of a system, although they should know its impact on. Where a component of the lightning protection system lps has a primary function, e. Systems followed in most of the buildings now are unfortunately not meeting the basic or statutory requirements. To prevent the buildings from a ground strike, a lightning protection system is required and there are 4 common design approaches to follow, namely, a. Lightning protection system designing buildings wiki share your construction industry knowledge. Similarly, with a secondary flash inside the build ing, the shock wave.
The lightning protection industry began in the united states when benjamin franklin postulated that lightning. Requirements for lightning protection systems, or nfpa 780, standard for the. So in summary, for this relatively simple geometrical shaped building the as1768 design rules are straight. A risk assessment based on actual lightning exposure design of the air termination network and downconductors di fth tht i ti t. Antenna system bonding and grounding requirements in the usa whitham d.
Protection against lightning a uk guide to the practical. Ul 96 and ul 467 are product standards for lightning protection components. Lightning protection systems on trial building design. Lightning protection system design and installation. Federal and state legislation has been introduced to reduce the output of. Lightning protection system designing buildings wiki. Designing a lightning protection system using the protective angle, mesh and rolling sphere. Design guidelines for lightning protection of pv systems. Before proceeding with the detailed design of a lightning. Professional surge protection for building installations. Introduction to lightning protectionintroduction to lightning protection lightning definitionslightning definitions air terminal a strike termination device that is aair.
A proper lightning protection system consisting of air terminal, down conductor, earthing design is very important to ensure increased protection of a building against lightning and its effects. Design guidelines for proper lightning protection system. Many transmitters can be destroyed in this way, even though the actual lightning strike was to a protected building. Lightning protection consultants india provides lightning protection design, earthing system design and grounding system design for buildings. State of the art for the installation of lightning protection systems 0. External protection equipment includes lightning rods, grounding wires, catching devices and conductors, as well as the accompanying ground system. Bs 7671 18th edition transient overvoltage protection. Whether a lightning protection system is concealed during construction of a new building or exposed on an existing structure, the materials used are identical. Figure 3 shows the design calculated by ericos lightning protection system design lpsd software depicting the locations of air terminals, down conductors and earthing points. Depending on the type, a strike can exceed 300,000 amperes, over one gigavolt one. Nfpa 780 and ul 96a are application standards governing satisfactory installation of an lps.
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