Design of lightning protection systems dehnsupport toolbox software. Lightning protection glossary of terms lightning protection institute. Basic lightning protection zone lpz concept bs en 623054. The surface gradient can exceed 10,000 volts per foot. New european standards regarding lightning and surge protection lightning strikes the earth 100 times a second.
The lightning protection system is defined by its protection class, where the effectiveness of protection class i decreases down to pro. This handbook is written to assist in the understanding of the iec 62305 series of lightning protection standards. Until api rp 545 was published in 2009, the existing lightning protection standards for the petroleum industry provided little guidance. Lightning protection national lightning safety institute. Another study, sponsored by 16 oil industry companies, found that 52 of 55 rim seal fires were caused by lightning, and concluded that lightning is the most common source of ignition. Protection of structure from lightning lightning protection systems, essentially lightning conductors protection of structures and voltage surge protectors protection against overvoltage, offer effective protection if they are. Lightning protection the following information is from the. We create a lightning protection and earthing concept including drawings, mounting details, detailed descriptions, tender specifications and bills of material. Hence works which have been previously installed and already accepted under the old standards do not become defective because, as a result of the updating of the standards, a higher technical standard is demanded. These ships are frequently struck, but the high conductivity of the large quantities of metal, with hundreds of square.
Impulse protection you cannot stop a large ilimpulse with a silingle lightning arrestor in most cases. A lightning protection system or lightning terminal provides a way in which the static electricity discharge may enter or leave without passing through and damaging homes and other structures. All our estimates are free, so call 8664152231 today for a chat about your lightning protection needs. The need to provide protection should be assessed in the. When correctly installed, the recommendations on this page and in this technical note give the user the best protection from the harmful effects of lightning. Installations not directly related to those areas and structures housing such installations can be protected against lightning by the provisions of this standard. Rolling spheres method for lightning protection epow 6860 surge phenomena fall 2007 joe crispino 1. Lightning protection group export department 22, rue du 8 mai 1945 f95340 persan france tel. Lightning protection for facility operational continuity requires attention to combinations of. If you continue to use this site we will assume that you are happy with it. Standard for the installation of lightning protection systems. In addition to these, there may be legislation or rules of each country that must be taken into account. Lightning pdf professional 7 is the complete pdf alternative to adobe acrobat specifically designed for business users. Fully licensed and insured, rs lightning protection is here to service your requirements in a timely and friendly manner.
Specification kurn lightning terminal k urn terminal merupakan ala t penangkal petir yang d i design untuk menciptakan med an ion is asi pada sekeliling area lonezer dissipation system. Bolt tension cap can be turned so cables can run horizontal or verticle. These lpls directly equate to classes of lightning protection systems lps. As every radar user knows, lightning is very important, dangerous and vital subject for radars. 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. Design calculations of lightning protection systems part one in article design process for lightning protection systems, i indicated that the design process for lightning protection systems is commonly broken into discrete phases, allowing the lightning protection designer to. All pdf files created are 100% industrystandard and fully compatible with any pdf viewer. Guidelines for lightning protection according to rtca do. The lightning protection international standard prof. All thunderstorms produce lightning and are very dangerous. Masterspec now includes the lpiip inspection program as an option for followup quality assurance inspection for lightning protection systems. Many decades of experience shows that by combining franklin rods located at critical points on a structure with a proper down conductor and grounding system the damage due to lightning could be reduced significantly 1. Mission viejo, ca september 8, 2011 holt integrated circuits, a world leader in data bus ics for commercial and military avionics, today published a new application note an301 which provides guidelines for protection against lightning induced transients applied to holts latest generation of arinc 429 line drivers and receivers. A cast base threaded for mounting on horizontal or verticle surfaces using screws, 14 bolts, 14 drivein anchors, or an adhesive.
A lightning protection system with an earth resistance of 10 ohms can still allow a buildup of over a million volts. Lightning protection theory schirtec lightning protection. The lightning mechanism lightning is an electrical discharge either between the opposite charged regions within a cloud or between the lower region of a cloud and the ground. Lightning protection and grounding, 4 all about lightning protection. Requirements for the the safety of people staying at work, home etc.
Lightning pdf professional free version download for pc. Bs en 62305 defines four lightning protection levels lpls based on probable minimum and maximum lightning currents. Types of lightning protection systems lps electricalknowhow. We use cookies to ensure that we give you the best experience on our website. The lightning protection institute is a nationwide notforprofit organization founded in 1955 to promote lightning protection education, awareness, and safety. Fundamentals of lightning protection systems page 1 of 14 fundamentals of lightning protection systems, edition 1c september 2011.
Reviewed in the united states on december 24, 2012. Data comms and lightning protection the rs485 bus the rs485 bus is the defacto standard bus used in industry. The new standard uses the class of lps to define several attributes of the lps. Ds202de dehn uni earthing clamp saddle clamp pdf only. Selling cheap lightning protection from distributor kurn. Lightning protection, grounding, equipotential bonding and surge protection are all interdependent disciplines and the focus of the nvent erico brand of facility. Because the lightning is very huge and has very big electrical.
When lightning hits the ground, it is estimated that only 15% of it penetrates the earth and the rest travels across the surface. Lightning and surge protection technical note the electrical current within a typical lightning strike, behaves as a sharp edge pulse which rises to its peak value very quickly in 110 microseconds and decays over 50200 microseconds. The need for lightning protection there is no known method of preventing the occurrence of a lightning discharge. Bases lightning protection, lightning protection rods. 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.
Ufc 357501 lightning and static electricity protection. Even the newer buses like can and profi use rs485 or similar technology and often use rs485 transceivers or. Lightning damage is not covered under the motorola warranty. The former event is a cloudtocloud discharge, while the latter, known as. The basis of conventional lightning protection technology. The importance of lightning protection 6 7 key considerations identifying the need for both external and internal lightning protection for effective cover against lightning strikes technical design service 8 9 not only do we supply lightning protection and earthing.
The ieee surge protection devices committee spdc has been writing. New european standards regarding lightning and surge. How to protect your house from lightning national lightning. Thousands of trees are struck by lightning every year. This is a medium to advanced level book, very suitable for science, electric, physics or electronic students written by the world lighting authority dr. This lightning protection study was done based on the protection of equipment in the. This books should be accompanied by the others books. Jun 15, 2015 hence works which have been previously installed and already accepted under the old standards do not become defective because, as a result of the updating of the standards, a higher technical standard is demanded. Kesempurnaan hasil cipta itu send iri dibagi dalam 2 dua bagian, yaitu. As the name implies, the lightning rod kurn brand is a device created to avoid the risk of danger caused by lightning.
A lighting protection system lps is the system that provides a means by which a lightning discharge may enter or leave earth without passing through and damaging personnel, electrical equipment, and nonconducting. Even the newer buses like can and profi use rs485 or. Boatinglightning protection page 4 lightningprotected boats there is no such thing as lightningproof boats, only lightningprotected boats. Design problems the unpredictable, probabilistic nature of lightning. Design calculations of lightning protection systems part. Lightning protection systems with nonradioactive ionization device. Lightning protection for facility operational continuity requires attention to combinations of defenses.
The importance of lightning protection 6 7 key considerations identifying the need for both external and internal lightning protection for effective cover against lightning strikes technical design service 8 9 not only do we supply lightning protection and earthing materials, we will also design the system you need. Sep 09, 2011 mission viejo, ca september 8, 2011 holt integrated circuits, a world leader in data bus ics for commercial and military avionics, today published a new application note an301 which provides guidelines for protection against lightning induced transients applied to holts latest generation of arinc 429 line drivers and receivers. Energy is divided and shared by a distributed ground connection. Lightning phenomenon, effects and protection of structures. Our systems are tested daily by mcafee and secured by ssl. Allmetal ships are rarely damaged, and injuries or deaths are uncommon.
The best book for both teachers and students to learn physics exactly like in the good old days. The following lightning protection study, with its associated drawings, is intended to display the level of protection and suggested lightning protection that should be added to the new ring bus substation configuration in the scope of the umkc substation project. Electrical code, nfpa 70 and installation requirements. Lightning protection for equipment and installation meteolabor. Boating lightning protection page 4 lightning protected boats there is no such thing as lightning proof boats, only lightning protected boats. 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 pdf professional is an allin1 pdf solution for creating industrystandard pdf files, editing pdf text and images, converting pdfs to office documents, adding comments plus editing and filling in pdf forms. Many people are not aware that a lightning protection system does not prevent lightning strikes. Improvement of lightning protection systems in turkish radar.
New european standards regarding lightning and surge protection joe ellwood. Chapter 2 lightning protection design, engineering, acquisition. No more complicated calculations with dehnsupport toolbox 2. 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 rods, lightning protection and lightning protection rod parts. Lightning is a bright flash of electricity produced by a thunderstorm. If you hear the sound of thunder, then you are in danger from lightning. The transient nature of the current within a lightning flash results in electrical effects. Protection untuk mendapatkan ha sil cipta yang benarbenar dapat dihandalkan. Lightning protection mastering the maze of bs en 62305. The equipment and systems used for lightning protection are required to comply with the national.
With most nempprotected installations the discharge capacity of the protection elements is determined by the prevailing lightning danger. The file size of the latest downloadable setup file is 30 mb. In both cases, this recommendation provides the procedures for the design and installation of the lightning airtermination system, down. Besides voice communication, mobile data communication gained momentum with the. This report investigates the discharge mechanism and discusses the principles of lightning protection and the way this is applied to the protection of structures. The external grounding system iv after have created our single point ground panel, spgp, in the hamshack and attached on it our surge protectors as well as all cabling, take a look at the outside. These trees will have varying degrees of damage ranging from complete shattering and destruction of the tree, to a slow lingering death, to virtually no apparent damage at all figure 1. Sites above marked with the contain pdf copies of this application guide. Lack of data due to infrequencies of lightning strikes in. You can modify the impulse by lowering its intensity and lengggthening its duration. These tested, highquality products for earthing, lightning protection, equipotential bonding. Earthing and lightning protection systems arthur flury. Today, i will explain the different types of lightning protection systems lps.