This is one of the significant features of electrical networks. Smart ground lightning protection by lightning eliminators. The earthing and lightning protection system shall comply with this specification and with the latest edition of the following standards. Furse offer a renowned total solution for earthing and lightning protection. Tnc describes an arrangement where a combined protective earthneutral pen is connected to the earth at the source. Know your earthing and lightning protection best practice. Lightning protection systems earth rods earth bars. This type of earthing is not commonly used in australia due to the risks associated with fire in hazardous environments and due to the presence of harmonic currents making it unsuitable for electronic equipment.
Other non lightning systems requiring grounding shall be integrated bonded or connected to the lightning ground to form a common ground potential see section 4. Lightning protection and earthing systems are an essential part of the transmission system. Iec 60227 pvc insulated cables of rated voltages up to 450750 v. Lightning protection concept fundamentally still same as the today external lightning protection system. Lightning and surge protection systems clearing ground faults quickly protecting critical electronic systems yet many facilities never make needed repairs because buried grounding systems are difficult to inspect and test. Principles of grounding of lightning protection systems per. Lightning protection and earthing components bim object. Earthing is the method of transmitting the instant electricity discharge directly to the ground through low resistance wires or electrical cables. All of our equipment is designed, manufactured and tested to meet british, european and international standards at our own. The wallis cunnect exothermic welding system is a simple, economical method of making permanent, very high quality electrical connections mainly between copper to copper or copper to steel. 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.
Earthing equipotential bonding lightning protection exothermic welding. I am confident that tokai is uniquely placed to offer you the total integrated lightning and earthing solutions for all your lightning protection needs. Mtl surge technologies earthing guide for surge protection. We are top earthing and lightning protection system manufacturers in india. Rohit narayan, be electrical, mba tech mgmt, mieaust background the current standard for lightning protection in australia and new zealand is asnzs 1768. An example use may be within a lightning protection system. Lightning protection international pty ltd is a fully owned australian manufacturer and supplier of direct strike lightning, surge and transient protection equipment and earthing products to a wide range of industries throughout the world. The appropriate standards for lightning protection in these markets are. The earthing system shall comprise of earth electrodes at substation and other convenient places, with an interconnecting earth grid. Periodic inspection of earthing and shortcircuiting devices.
Common methods for earthing and lightning protection. Lightning protection system safe work method of statement. Each downconductor must have an earthing system, formed by conductive elements in contact with the soil that are able to disperse the lightning current in it. The clamps have a high resistance to corrosion and. Lightning protection practical design and installation the information covered in this document is intended to be a practical guide for basic design and installation of a lightning protection system lps. Basic lightning lightning protection earthing and grounding. Lightning protection quiz questions electrician exams. The terms grounding and earthing are understood to be interchangeable in this book but due to the larger.
A practical guide to lightning protection and australia and nz. The smart ground service simplifies testing and provides practical recommendations so you can finally have. Lightning protection guide is available as printed book, as pdf file, on cd or at. Three point protection plan 1 capture the lightning at a desired point on a buildingstructure. This standard establishes requirements for earthing and lightning protection in communications apparatus rooms. Earthing and lightning protection services earthing and lightning protection services thanks to our teams extensive international experience across various industries, tnei can provide specialised and general earthing and lightning protection services for projects from initial conception through to project delivery. Air terminal system down conductor system earth termination system iec 623053, value distance of down conductor is correlated with separation distance.
Grounding and surge protection for telecommunications and it systems are examined in detail. Code of practice for the protection of building and allied structures against lightning. Guidelines on earthinggroundingbonding in the oil and gas industry first edition september 2016 published by energy institute, london the energy institute is a professional membership body incorporated by royal charter 2003. Protection guide is available as printed book, as a pdf file, on cd or at. High frequency earthing system characterization during a lightning strike on a structure, the lightning current will be divided between the earthing system, the different services leading to the structure, including electric cables, and in the natural paths reinforcement of foundations. Enabling clients to install an economical system that will intercept and discharge static electric flow into the earthing system. The chemrod grounding rod solves problems found with conventional grounding rods by requiring less real estate and fewer electrodes to meet specified resistance.
Specialist advice from our fully qualified technical team, which focuses on earthing and lightning protection. The external lightning protection composed by 3 interconnected systems. The product terms mentioned in the lightning protection guide that are also registered. Practical earthing, bonding, lightning and surge protection. 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. O p o o o o o p p in both commercial and industrial applications, needs change, and it is becoming increasingly important to choose the right system earthing arrangement. The lightning protection consultancy service we offer provides you with the expertise to reduce the exposure and susceptibility of your installations to lightning conditions, and to implement suitable protection measures. Finally, the impact of lightning is examined and simple techniques for minimising its impact are described. Principles of electrical grounding john pfeiffer, p. Combining over 100 years technical expertise with an enviable reputation for innovation, quality and service, furse is uniquely placed to provide a total solution to all your earthing, lightning and transient overvoltage protection needs.
The main function of voltage surge protectors is to provide protection against the indirect effects. Furse is a world leader in the design, manufacture and supply of earthing and lightning protection systems. Whats more, we believe we have as wide a range of products as can be found in the industry. Earthing, lightning and surge protection seminar earthing, lightning and surge protection seminar di s counts earl y bird offer. Lightning protection design, earthing system design lightning protection for buildings. System earthing arrangements in lv are mainly concerned by common mode faults which occur most frequently in loads and cables. Earthing design instruction edi0004 earthing design, construction and testing of overhead transmission mains earthing design instruction edi 100 distribution earthing design, construct and test. 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. Everdo earthing provides a market leading comprehensive range of services for the design, supply, installation and maintenance of earthing, lightning and surge protection systems. Iec 60028 international standard of resistance for copper. Which protection systems work and which dont best location for it equipment optimum earthing for building pitfalls of isolated earthing shielding and bonding of electronics and communications optimum location of surge protection devices surge and transient protection lightning phenomena protection of power supply. This is a discussion of the basic principles behind grounding systems and how grounding is related to safety and the effective operation of circuit protection devices such as fuses and circuit breakers. Lightning protection quiz questions lightning protection quiz questions answers search for.
The furse pvc protective conductor guard has been designed to deliver an effective. Electrical earthing definition, types of electrical. Combining over 100 years technical expertise with an enviable reputation for. Pdf guideline for earthing of buildings and industrial. I earthing electrodes, copper bonded earthing electrodes. Pdf lightning protection guide 3rd updated edition. Direct strike lightning protection stormaster early streamer emission ese air terminals. These clamps are used for joining earth rods to different sizes of copper tape. This applies whether the source of the disturbance is lightning, powersystem switching activities, or faults in the. Communications earthing and surge suppression standard. Technology advances in technology have had a substantial impact in three ways we have more complicated systems to protect, we have better protec. They are required to constrain earth potential gradients to safe voltage and current levels, for both system normal and fault conditions, without posing a risk to personnel.
Earthing and lightning protection providing a total solution structural lightning protection from furse air termination systems including air rods and strike plates to capture lightning strikes, through to our comprehensive range of down conductors and lightning protection components which channel lightning energy safely. Dehnselect spd tool page 15 the new dehnselect spd tool allows to plan internal lightning protection and surge protection measures, thus. Guidelines on earthinggroundingbonding in the oil and. Dehn earthing tool page the dehn earthing tool calculates the earth electrode length as per iec 623053 for foundation earth electrodes, ring earth electrodes, earth rods and the soil resistivity. Earthing systems earthing general introduction an earthing system is a need in any electrical system to protect from the adverse effects of lightning, leakage currents, insulation failures, short circuiting and other faults. Sme has been operating as a specialist company, in the fields of lightning protection, electrical earthing and surge protection, in pinetown since 1985. It is applicable to all new railcorp communications apparatus rooms and outdoor equipment locations with powered equipment, and to existing locations where the. Following tools shall be arranged before starting the work for earthing, bonding and lightning protection system installation and testing. Material shall be stored in a covered dry space at all. Electrical earthing and lightning protection is necessary to all place. Particularly, the earth termination system is essential for lightning protection, since the lightning current should disperse there.
Earthing grounding rod lightning protection system. Because it builds the most eagerly accessible and hazardous power source much secure to utilize. 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. A practical guide to lightning protection in australia and new zealand author. The dehn lightning protection guide is available as printed book, as pdf. The relationship between the lightning protection system lps and the earthing system is that the lps catches the electrical energy. Dehn customised engineering customised lightning protection earthing products. Earthing, bonding and lightning protection discover our esp brands. Our white papers provide a range of practical examples on lightning and surge. Lightning current flowing in the lightning protection system lps does not induce dangerous currents in any parallel metallic systems near the lps, and. On receipt of the lightning protection system materials at site necessary precautions shall be taken for unloading, shifting and storage, as follows. Lightning protection control of undesirable static electricity telecommunications the following schematic illustrates the key elements of an effective earthing system. And all other engineering professionals who have an interest in earthing, lightning and. Currently the total production space is 30 000 square meters.
Guideline for earthing of buildings and indust rial plants 1. Soil resistivity testing lightning and surge technologies. The recently launched earthing and lighting protection association elpa, created to protect consumers, establish a uniform interpretation of the codes of practice and to help regulate and advise the lightning protection industry, has announced that the first set of elpa examinations is set to commence. The diameter of main earthmat conductor and risers for extended portion shall be identical to the existing one. Each chemrod creates an optimal electrical connection to earth with a large conductive surface for enhanced grounding rod lightning protection. If youve selected wallis for structural lightning protection products, why not make us your choice for exothermic welding and surge protection equipment too. Air terminals are described by characteristics such as material, format and size. Conductors and earth electrodes as with lightning protection, the first choice faced by the designer of an earthing system is the type of conductor to be used. Poor grounding practice can be the cause of continual and intermittent difficulttodiagnose problems in a facility.
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. Its a matter of providing an alternative path for the lightning current to flow to ground and ensure that. The lightning grounding electrode is a dedicated part of the lightning protection system. Substation lightning protection and earthing standard. Lightning arrester manufacturers in chennai gravin earthing. Proper earthing is a basic protection against ac line disturbances. The water droplets merge into heavy droplets and freeze to become ice particles. Lightning protection systems external lightning protection air termination systems conductors earthing shielding of enclosed spaces avoiding proximity internal lightning protection surge protection surge protection is not part of the installation of a lightning protection system, rather it is a separate operation. Bs eniec 62305 lightning protection general standard. No other ground shall be used as a lightning ground see section 4. Knowledge our knowledge of the latest standards ensures designs and selected products comply with the latest iecbs ennfpaul standards. Structural earthing and lightning protection systems for. The surge protection system diverts the surge current directly to the ground and limits the overvoltage to values compatible with the equipment connected to the network.
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