This concept has led to the given rolling sphere scheme for simplified electro. In order to design an effective lightning protection system with franklin rods or capturing meshes, the following rules shall apply. Design calculations of lightning protection systems part. 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. Rand erico lightning protection handbook, designing to the iec 62305 series of lightning protection standards, pentair centurylink, technical publication, centra l office and.
Lightning protection for the amateur station figure 1a typical convective thunderhead. Part 1lightning protection can be a serious issue for amateurs. The external lightning protection system includes all systems installed outside. 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. Designing to the iec 62305 series of lightning protection standards. Cpu 312ifm 3182 dp installation manual this manual is part of the documentation package with the order number. This report investigates the discharge mechanism and discusses the principles of lightning protection and the way this is applied to the protection of structures. Erico manufactures, using the eritech trade name, lightning protection systems in full accordance with more than twelve national and international. Xdsgfs12001r2 earthing and lightning protection uncontrolled when printed page 2 of 37 xdsgfs12001r2 1 scope 4 2 specifications and standards 4 2. Lightning protection consultant handbook erico is dedicated to providing a costeffective lightning protection solution for any given application. Bs eniec 62305 lightning protection general standard. 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.
This ac presents a method of showing compliance with far 29. List of applicable documents shown in order of increasing legal force. Transient and lightning protection systems obobettermann. Regarding the lightning protection, the standards to be used are en 62305 series.
Designing a lightning protection system dehn africa. 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. 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. Ieee 80 guide for safety in alternating current substation grounding. If the derived protection zones do not encompass equipment, for a preselect lightning current level andor shielding failure rate.
Using genetic algorithms in designing substation lightning. In this approach, the building is subdivided into zones with different risk potentials. Xdsgfs12001r2 earthing and lightning protection uncontrolled when printed page 5 of 37 xdsgfs12001r2 iec 62305 protection against lightning parts 14. Energy is divided and shared by a distributed ground connection. The internal systems may be subjected to full or partial lightning surge currents. Devices defined by the standard as suitable to carry lightning current. A lightning protection zone concept in conformity with the iec 623054 standard provides effective protection against surges caused by a lightning electromagnetic impulse lemp. 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. Basic design specifications for lightning protection systems. Such systems have been refuted by recognized lightning protection authorities, as documented by m. In the event of a surge or lightning strike, the dplbfi1.
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. 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. 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. Fundamentals of lightning protection systems page 1 of 14 fundamentals of lightning protection systems, edition 1c september 2011. 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. According to this principle, the structure to be protected must be subdivided into inner lightning protection zones with different lemp threat values. These arresters must be capable of conducting partial lightning currents of 10350. Marine insurance and damage avoidance report over the past couple of hundred years, as science has learned more about the nature of nature, lots. Lightning protection quiz questions answers search for. Lightning protection zones created by traction construction of railways conference paper pdf available september 2015 with 1,063 reads how we measure reads. The zone boundaries of an lpz are not necessarily physical boundaries e. 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. Pdf lightning protection zones created by traction. Lightning protection zone concept dehn united kingdom.
Th e protective effect is adapted to the emc interference immunity conducted highenergy interference impulses for fieldbus measuring, control, and equipment. This seminar is the first in a short series of electrical grounding and bonding webinars presented by neca. 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. Adoption of iec 62305 as the basis for one major u. You can modify the impulse by lowering its intensity and lengggthening its duration. In the first of this threepart series, the author leads us through the process of developing a protection plan.
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. In order to plan protection measures, it is advisable to subdivide the wind turbine into lightning protection zones lpzs. Lightning protection guide is available as printed book, as pdf file, on cd or. Lightning protection for the amateur radio station part 1. Ie module discharges both leads and the cable shield to earth. The main function of voltage surge protectors is to provide protection against the indirect effects of lightning. To determine the need for protection against lightning for a given building structure, the variables to the right are to be considered. 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. Understanding lightning protection by bill laudeman reprinted with permission from seaworthy, the boatu.
Coordinating lightning protection for reroofing projects. The zones are areas characterized according to threat of direct or indirect lightning flashes and full or partial. Basic division of an installation into lightning protection zones lpzs. Lightning protection milestones in us arresterworks. En 62561 lightning protection system components all relevant parts. Article lightning protection pdfs lightninfg eliminators. Churchs and ships were the first recipients of this protection 1839 first us patent on the improvement of the lightning rod. 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. Protection design guidelines in this handbook are applicable to composite airframes. Houston chroniclefuel fix some companies dont wait for lightning to strikemarch 20. Iec 623054 defines protected zones and their protection levels lpz1, lpz2, etc. This may include strike termination devices, cables, lightning protection fittings, ground terminals, or. Commission iec lightning protection standards becomes a real possibility. Outdoor lightning protection system design specifications.
The protection zone can be visualized as the surface of a sphere with radius striking distance, s. A lightning protection system consisting of one or more overhead ground wires also known as overhead shielding. 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. 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. Iec 62305 protection against lightning 20 nfpa 780. Lightning and surge protection for explosive atmospheres ee. 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.
Standard for the installation of lightning protection systems2014 standards 20. The need for lightning protection there is no known method of preventing the occurrence of a lightning discharge. The basis of conventional lightning protection technology. Lightning protection zone concept the lpz concept according to iec 623054. Surge protective devices are categorised as lightning current arresters, surge arresters and combined arresters. Obo iscon system and insulated lightning protection. Our sales and engineering teams are versed in the specific challenges, requirement and specifications for this market. 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. Study of lightning safety distance using rolling sphere method. 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. If the derived protection zones do not encompass equipment, for a preselect lightningcurrent level andor shielding failure rate.
External lightning protection system the external lightning protection system includes all systems. Lightning protection is a safe investment for any station. 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. Zone where lightning electromagnetic environment is defined. Lightning protection according to iec 62305 diogo filipe da silva santos thesis to obtain the master of science degree in. 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 protection of iecex hazardous areas to atexiecex. Point of strike source of damage type of damage type of loss.
Gradual surge reduction with lightning protection zones. Lightning and surge protection for explosive atmospheres. 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. 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. Standard for the installation of lightning protection systems. Lightning and surge protection for hazardous areas dehn. 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. Simatic s7300 automation system, hardware and installation. 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. Protection against lightning a uk guide to the practical. Lightning protection quiz questions electrician exams. Most of surgeteks power protection and safety equipment are sabs approved and are specified by major users. Lightning protection zone concept dehn international. Lightning protection level is used to design protection measures according to the relevant set of lightning current parameters.
It can serve as a useful guide to justify additional cost incurred by additioh. In normal operation, the shield is isolated from earth. Wind zone germany is divided into four wind zones with diffe rent base. I dont need a lightning pro tection system lps because lightning strikes are rare.
They are fitted with an led indication showing the spds condition. The need to provide protection should be assessed in the. Johnston neca executive director, standards and safety 1 welcome to a neca webinar based on the national electrical code. Impulse protection you cannot stop a large ilimpulse with a silingle lightning arrestor in most cases.
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