Impulse protection you cannot stop a large ilimpulse with a silingle lightning arrestor in most cases. Lightning is an aweinspiring natural phenomenon that can discharge up to 200,000 amps in a fraction of a second, thus making lightning protection imperative for modern structures. This concept has led to the given rolling sphere scheme for simplified electro. Lightning protection according to iec 62305 diogo filipe da silva santos thesis to obtain the master of science degree in.
Lightning protection quiz questions electrician exams. In this approach, the building is subdivided into zones with different risk potentials. This ac presents a method of showing compliance with far 29. It can serve as a useful guide to justify additional cost incurred by additioh. The internal systems may be subjected to full or partial lightning surge currents. According to this principle, the structure to be protected must be subdivided into inner lightning protection zones with different lemp threat values. Lightning protection consultant handbook erico is dedicated to providing a costeffective lightning protection solution for any given application. The need to provide protection should be assessed in the.
Arrangement of airtermination sys tems according to the class of lps. All electrical devices located into classified zones, must meet the safety requirements and must be suitable for the type of classified area, as required by the atex 949ec directive. Cpu 312ifm 3182 dp installation manual this manual is part of the documentation package with the order number. Introduction to lightning protection and earthinggrounding. If the derived protection zones do not encompass equipment, for a preselect lightning current level andor shielding failure rate. Marine insurance and damage avoidance report over the past couple of hundred years, as science has learned more about the nature of nature, lots of folks have tried to find ways to protect their homes and. Lightning protection zones created by traction construction of railways conference paper pdf available september 2015 with 1,063 reads how we measure reads. They are fitted with an led indication showing the spds condition. Basic design specifications for lightning protection systems.
Lightning protection level is used to design protection measures according to the relevant set of lightning current parameters. This seminar is the first in a short series of electrical grounding and bonding webinars presented by neca. In the first of this threepart series, the author leads us through the process of developing a protection plan. Lightning protection zone concept dehn international. Designing to the iec 62305 series of lightning protection standards. This report investigates the discharge mechanism and discusses the principles of lightning protection and the way this is applied to the protection of structures. Such systems have been refuted by recognized lightning protection authorities, as documented by m. The zonal approach to lightning protection, as established in bs eniec 62305 see page 272, lightning protection zones, is applicable for designing an lps suitable for hazardous areas, considering the following points. Coordinating lightning protection for reroofing projects. In the event of a surge or lightning strike, the dplbfi1. Churchs and ships were the first recipients of this protection 1839 first us patent on the improvement of the lightning rod.
If the derived protection zones do not encompass equipment, for a preselect lightningcurrent level andor shielding failure rate. The zones are areas characterized according to threat of direct or indirect lightning flashes and full or partial. Iec 62305 protection against lightning 20 nfpa 780. Zone where lightning electromagnetic environment is defined. Lightning protection lightning protection milestones in us lightning protection of structures the lightning rod air terminal is commonly used worldwide to protect structures of every sort in high lightning zones. Xdsgfs12001r2 earthing and lightning protection uncontrolled when printed page 2 of 37 xdsgfs12001r2 1 scope 4 2 specifications and standards 4 2. Due to the entirety of the measures described in the emcconform lightning protection zones concept, a permanent system availability of a modern infrastructure can be. Definition of lightning protection zones lpz 0 a zone where the threat is due to the direct lightning flash and a the full lightning electromagnetic field. Devices defined by the standard as suitable to carry lightning current. Outdoor lightning protection system design specifications. Obo iscon system and insulated lightning protection.
Bs eniec 62305 lightning protection general standard principles. A lightning protection system consisting of one or more overhead ground wires also known as overhead shielding. External lightning protection system the external lightning protection system includes all systems. Lightning protection zone concept the lpz concept according to iec 623054. En 62561 lightning protection system components all relevant parts. Using genetic algorithms in designing substation lightning. In order to design an effective lightning protection system with franklin rods or capturing meshes, the following rules shall apply. Lightning protection lp for a wind turbine consists of an exter nal lightning protection system lps and surge protection meas ures spms for protecting electrical and electronic equipment. The minimum values of lightning current amplitude for the different lpl are used to derive the rolling sphere radius in order to define the lightning protection zone lpz 0b which cannot be reached by direct strike. Bs eniec 62305 lightning protection general standard. To determine the need for protection against lightning for a given building structure, the variables to the right are to be considered. Simatic s7300 automation system, hardware and installation. Information is included on the natural lightning environment, the interaction between aircraft and lightning, and the mechanism of the lightning strike effects on the aircraft. Johnston neca executive director, standards and safety 1 welcome to a neca webinar based on the national electrical code.
Iec 623054 defines protected zones and their protection levels lpz1, lpz2, etc. The need for lightning protection there is no known method of preventing the occurrence of a lightning discharge. Gradual surge reduction with lightning protection zones. The tphlbf, tcplbf, and scplbf series surge protectors consist of. The lightning risk assessment provided in annex l does not currently incorporate the concept of defining multiple lightning protection zones lpzs in a structure. According to the insurance informa tion institute, claims for lightning losses cost nearly a billion dollars in lightning protection for the amateur radio operators home lightning protection is a. Houston chroniclefuel fix some companies dont wait for lightning to strikemarch 20. The purpose of a lightning protection system, therefore, is to control the passage of a discharge in such a manner that prevents personal injury or property damage. Lightning protection quiz questions answers search for. Lightning protection of iecex hazardous areas to atexiecex. Protection design guidelines in this handbook are applicable to composite airframes. The basis of conventional lightning protection technology. Regarding the lightning protection, the standards to be used are en 62305 series.
Jan 05, 2018 lightning is an aweinspiring natural phenomenon that can discharge up to 200,000 amps in a fraction of a second, thus making lightning protection imperative for modern structures. Lightning protection is a safe investment for any station. Standard for the installation of lightning protection systems. Lightning protection milestones in us arresterworks. Surge protective devices are categorised as lightning current arresters, surge arresters and combined arresters. Designing a lightning protection system dehn africa.
Zipse, fellow, ieee abstractthe successful 200yearold method of using a franklin rod to collect, control, and convey to earth the awesome and destructive power of lightning has produced other controversial, potential alternate methods. Lightning and surge protection for explosive atmospheres. Rand erico lightning protection handbook, designing to the iec 62305 series of lightning protection standards, pentair centurylink, technical publication, centra l office and. Marine insurance and damage avoidance report over the past couple of hundred years, as science has learned more about the nature of nature, lots. Point of strike source of damage type of damage type of loss. The main function of voltage surge protectors is to provide protection against the indirect effects of lightning. Part 1lightning protection can be a serious issue for amateurs. The highest requirements are placed on the discharge capacity of lightning current arresters and combined arresters used at the transition from lightning protection zone 0 a to 1 or 0 a to 2. A lightning protection zone concept in conformity with the iec 623054 standard provides effective protection against surges caused by a lightning electromagnetic impulse lemp. Our sales and engineering teams are versed in the specific challenges, requirement and specifications for this market. Standard for the installation of lightning protection systems2014 standards 20. Commission iec lightning protection standards becomes a real possibility.
Lightning and surge protection for hazardous areas dehn. In normal operation, the shield is isolated from earth. You can modify the impulse by lowering its intensity and lengggthening its duration. Adoption of iec 62305 as the basis for one major u. Part 1 of the standard also introduces new concepts for consideration when preparing a lightning protection scheme, such as lightning protection zones lpzs and separation distance. Lightning protection for the amateur station figure 1a typical convective thunderhead. List of applicable documents shown in order of increasing legal force. 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.
The zone boundaries of an lpz are not necessarily physical boundaries e. I dont need a lightning pro tection system lps because lightning strikes are rare. Ie module discharges both leads and the cable shield to earth. Fundamentals of lightning protection systems page 1 of 14 fundamentals of lightning protection systems, edition 1c september 2011. According to the insurance informa tion institute, claims for lightning losses cost nearly a billion dollars in lightning protection for the amateur radio operators home lightning protection is a safe investment for any station. Article lightning protection pdfs lightninfg eliminators. Protection against lightning a uk guide to the practical. Energy is divided and shared by a distributed ground connection. Understanding lightning protection by bill laudeman reprinted with permission from seaworthy, the boatu. Lightning protection zone concept dehn united kingdom. This may include strike termination devices, cables, lightning protection fittings, ground terminals, or. Lightning protection guide is available as printed book, as pdf file, on cd or. In creating lps shielding zones, station designer needs to propose some initial arrangement of shielding conductors and apply one of the methods from ieee std. Basic division of an installation into lightning protection zones lpzs.
Most of surgeteks power protection and safety equipment are sabs approved and are specified by major users. The aforementioned lightning and surge protective measures at the boundaries of the lightning protection zones apply to both the power supply and it system to the same extent. Wind zone germany is divided into four wind zones with diffe rent base. Qkl qfl surge arresters the qkl and qfl range of rail mounted surge protection devices are mm in width per pole and class ii devices. Lightning protection for the amateur radio station part 1. Th e protective effect is adapted to the emc interference immunity conducted highenergy interference impulses for fieldbus measuring, control, and equipment. In order to plan protection measures, it is advisable to subdivide the wind turbine into lightning protection zones lpzs. Erico manufactures, using the eritech trade name, lightning protection systems in full accordance with more than twelve national and international. These arresters must be capable of conducting partial lightning currents of 10350. The management of the process for determining the need and delivering an lps to a structure andor an lpms to protect electrical or electronic systems within a structure.
Lightning and surge protection for explosive atmospheres ee. Pdf lightning protection zones created by traction. According to the lightning protection zone concept as per iec 623054 en 623054, adequate surge protective devices, which will be described below, must be provided for all lines at the boundaries of the lightning protection zones. Xdsgfs12001r2 earthing and lightning protection uncontrolled when printed page 5 of 37 xdsgfs12001r2 iec 62305 protection against lightning parts 14. Ieee 80 guide for safety in alternating current substation grounding. The protection zone can be visualized as the surface of a sphere with radius striking distance, s. Transient and lightning protection systems obobettermann. Surge protection experts polyphaser and transtector systems are industry leaders in the development, design and manufacturing of power and signal integrity solutions for the oil and gas industry. Lightning protection principles knowledge of the mechanism of the lightning discharge enables an understanding of the way in which lightning detection and warning systems operate. Study of lightning safety distance using rolling sphere method. The external lightning protection system includes all systems installed outside. Design calculations of lightning protection systems part.
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