A lightning arrester is a protective device that is used in substations, generating stations, dtr structure, etc to provide protection against surge and lightning strikes. In this brochure, you will gain an insight into the field of surge protection. The valve type lightning arrester may be station types, line types, arresters for the protection of the rotating machine distribution type or secondary type. Continued from article complete overview of lightning arresters part 2. All arresters are designed and tested per requirements in iec 600994 and. For consumer equipment protection, different products. It was originally developed as a suspended mounted hvdc valve arrester with several parallel metal oxide columns in a common housing. Lightning protection system conventional type lightning. Pdf application and analysis for surge arrester on lightning. It is customary, therefore, to call an arrester up to 245 kv a lightning arrester and beyond 245 kv a surge arrester. Distribution class arresters meet or exceed the requirements of ieee std c62. If protection fails or is absent, lightning that strikes the electrical system introduces thousands of kilo volts that may damage the transmission lines, and can also cause severe damage to transformers and. Types of lightning lightning facts national weather service.
Having both gaps and sic blocks, the arrester height increased to the point where it was difficult to vent the pressure builtup during a fault, which limited the arresters pressure relief rating. Type i and ii lightning arrester technical data ordering data. Surge voltages associated with the discharge of lightning arresters at other locations within the facility. Suitable for all whether and climatic conditions and can be used in any terrain. The proper selection and application of lightning arresters in a system involve. Jul 17, 2017 lightning arresters are devices used to stop lightning from damaging electrical power systems.
Lightning and surge protection for low voltage supply. Arresters are connected between the electrical device to be protected and a solid earth ground. A simple guide to selection of lightning and surge protection please note that this is a very simple summary and must be read in conjunction with the relevant code sans 101421. The lightning arrester is a nonlinear device that acts as an open circuit to low potentials, but conducts electrical current at very high potentials. In order to avoid this, the surge arresters are normally used. They differ only in constructional details but operate on the same principle, providing low resistance path for the surges to the round. Design of lightning arresters for electrical power systems. There are several types of lightning arresters in general use. It is a very simple type of diverter and consists of two 1. Lightning and surge protection basics we dont just want to support you with excellent solutions, but also to be on hand with help and advice. Application guide dynavar metaloxide surge arrester. The lightning protection system must be solidly and permanently grounded.
They have set the standard for design and manufacturing of polymeric distributionclass arresters up to 36 kv. Difference between surge arrester, lightning arrester and lightning rod. Lightning safety rules the best shelter from lightning is inside a large enclosed. The typical lightning arrester has a highvoltage terminal and a ground terminal. The lightning arresters are used to protect power system from high voltage surges. The air terminal or strike termination device must be positioned so that it is the highest point on the structure. Lightning is one of the most serious causes of overvoltages. The zno or sic material has the unique property that they dont allow current to pass through them under normal conditions but allows current to through them when. Surge arrester is used to protect the circuit or electrical equipment from high voltage transient or electrical surges. This table documents how well the arrester clamps lightning and switching surges, which is the fundamental purpose of arresters. Lightning arrester is the device used to protect the insulation and conductors from damaging effects of lightning on electrical power systems and telecommunication. Types of lightning arresters the lightning arrester protects the electrical equipment from lightning. Surge voltages due to a failure in equipment insulation resulting in a short circuit on the distribution system. It happens completely inside the cloud, jumping between different charge regions in the cloud.
Lightning arrester lightning arrester types types of. Count less new products over the years, such as the first connectable type 2 surge protection device with. A lightning arrester alternative spelling lightning arrestor also called lightning diverter is a device used on electric power systems and telecommunication systems to protect the insulation and conductors of the system from the damaging effects of lightning. The application and selection of lightning arresters. The most common surge arresters are nonlinear metal oxide resistors type in aporcelain or silicone rubber housing, and are fitted in parallel with the object protected and connected to the earth grid. Modern electrical systems tend to be vulnerable to voltage surges of any kind, so arresters have become more necessary. Thread arrester type position required torque nm screwin depth mm min. There are various types of lightning arrester construction. Pdf in order to effectively reduce lightning stroke outage rate, effect of lightning. A lightning arrester is connected to protect a piece of equipment from lightning and switching surges. It is placed very near to the equipment and when the lightning occurs the arrester diverts the high voltage wave of lightning to the ground.
What are the different types of lightning arrester. Typical lightning arrester has a highvoltage terminal and a ground terminal. By keeping the track of latest market trend, we are highly efficient in manufacturing and supplying an exclusive spectrum of conventional type lightning arrester. This includes basic information on the topics of technology and electronics that applies to all of us.
If the name on the name plate is as follows, it will be an sic type arrester mcgraw edison g arrester, type f, type ss, type e, type rp. Internal last inspection report of manufacturer will be provided with every serial numbered lightning arrester, if. Manufacturing date if it is manufactured before 1977, it will be a sic type arrester if it is manufactured between 19771987 it is likely a sic type arrester and warrants a closer look. Surge diverter lightning arrester working lightning. The basics of surge protection we dont just want to support you with convincing solutions, but also to be on hand with help and advice. Types of lightning arresters for outdoor application. The function of the surge arrester is to allow the discharge of any dangerous overvoltage before it can do damage and then to restore the line to. This includes basic information about engineering and electronics topics. None of these systems claims to protect against 100% of the possibility of a lightning stroke arriving near protective area. Hi friends, in this article, i am going to discuss about lightning arrester types and lightning arrester working principle. Lightning arrester normally a spark gap device connected between each leg of a pow. Lightning arresters are devices used to stop lightning from damaging electrical power systems. A dc surge arrester is generally composed of a shell, a nonlinear resistance sheet, a spring, a pressure release device, a sealing device, etc. The basics of surge protection the basics of surge protection.
Discharge voltage table in every arrester datasheet, you will find a most important table about the discharge voltage of the arrester in question. Eaton s cooper power series distribution arresters provide superior overvoltage protection for any electric distribution system. Zno gapless lightning arrester or surge arrester electrical4u. Each type of electrical equipment has a standard bil. When a lightning surge travels along the power line to the arrester, electricity from the surge diverted through the arrester to the earth. Types of lightning protection systems lps electrical knowhow. Desigr ers thought that protection was not necessary in many cases because the antenna mast was relatively short 10 meters or less.
The gap between the electrodes intercepts the flow of current through the arrester except when the voltage across the gap raises beyond the critical gap flashover. Second type is originated from electrical system itself, such as switching surges. Pdf application and analysis for surge arrester on. Mar 12, 2020 the main equipment commonly used for this purpose is lightning arrester or surge arrester. What is the difference between lightning arrester and surge.
Overvoltages may cause the burning of insulation of substation equipment if not well protected. A lightning protection system consists of both external and internal lightning protection measures. This brochure provides you with an overview of lightning and. The selection of arrester depends on the various factors like voltage, current, reliability, etc. A higher rated arrester increases the ability of the arrester to survive on the power system, but reduces the protective margin it provides for a specific insulation level. This paper describes the arrester type, lightning terminal and earthing plan of dagon east substation in myanmar. This text does not try to add any knowledge to the vast knowledge base on.
Both arrester survival and equipment protection must be considered in arrester selection. The types of lightning arresters are rod, sphere, horn, multi gap, electrolyte, and metal oxide. There are two types of surges one comes externally from atmosphere such as atmospheric lightning. What is the difference between lightning arrester and.
Contents definition of surge arresters 02 siemens surge arresters for any requirement 04 always the best solution 05 history timeline 06 movs. Siliconehoused surge arrester pexlim pz english pdf leaflet surge arrester for gis elk04c english pdf leaflet three phase surge arrester az04d for 145 kv gis, elk04 c english pdf leaflet texlim product note english pdf leaflet surge arrester zno block testing english pdf leaflet high voltage surge arresters. Difference between surge arrester, lightning arrester and. The insulation of the electrical consumer itself has a surge voltage strength of 1. For ease of reference, we have described them as surge arresters or only arresters for all types. Selection of arrester size since the arrester valve element carries all, or a substantial part of the continuous operating voltage, and conducts a small grading current, the most important application criterion. Intracloud lightning is sometimes called sheet lightning because it lights up the sky with a sheet of light.
Distribution arresters overvoltage protection eaton. Clearly and easily compares all critical characteristics of eaton, joslyn and ohio. A lightning arrester is essentially a collection of billions of microscopic junctions of metal oxide grains that turn on and off in microseconds to form a current path from the top terminal to the ground terminal of the arrester. A surge arrester is a device to protect electrical equipment from overvoltage transients caused by external lightning or internal switching events. Oct 04, 2017 lightning arrester lightning arrester types types of lightning arresters learning engineering october 04, 2017 a lightning arrester is a device used on electrical power systems and telecommunications systems to protect the insulation and conductors of the system from the damaging effects of lightning. This brochure provides you with an overview of lightning and surge protection for electrical systems. Lightning arresters catch surges in electrical wiring and divert them to grounding cables, which direct the current into the ground. Selection of arrester size since the arrester valve element carries all, or a substantial part of the continuous operating voltage, and conducts a small grading current, the most important application criterion for the dynavar arrester is the maximum voltage which can be. Recommends the optimum arrester rating from each manufacturer based on user entered data.
They differ only in constructional details but operate the same principle viz. Plus, many positive lightning strikes occur near the edge of the cloud, sometimes as far as 10 miles away from any rainfall. Station type valve lightning arrester this type of valve is mainly employed for the protection of the critical power equipment in the circuit of 2. It protects people from injury, structures from damage and electrical equipment from failure due to surge voltages. Poor or high resistance connections to ground are the leading cause of lightning system failure for each one of these systems. Up to 245 kv lightning surges and beyond 245 kv switching surges are found to be more severe, section 18. The lightning arrester which consists the single or multigaps connected in series with the current controlling element, such type of arrester is known as the lightning arrester. Ese lightning arresters, early streamer emission lightning. Definition of surge arresters surge arresters are used to protect highvoltage equipment in substations, such as transformers, circuit breakers, and bushings, against the effects of overvoltages caused by incoming surges. Surge voltages associated with switching capacitors.
Silicon carbide porcelain housed arrester identification guide. The lightning arresters are composed of zno or sic material. It consist tworod electrodes, one of which is connected to the line and other to earth. Optimizer 20 is a program that assists users, specifiers, students, sellers, and almost anyone involved in distribution arresters in the selection and understanding of this product.
Mar 30, 2011 there are several types of lightning arresters in general use. The lightning surge and arresters contents introduction the thunder head the flash and stroke incidence of lightning magnitude of arrester currents the lightning surge traveling waves introduction this arresterfacts is about the lightning surge from an arrester perspective. The principle lightning arrester types are as under. Also called a surge protection device spd or transient voltage surge suppressor tvss, this class of device is used to protect equipment in power transmission and distribution systems. A lightning arrester is the first component in a three step process designed to eliminate damaging voltage spikes from damaging electrical and electronic devices. Analysis and design selection of lightning arrester for distribution. The types of surge arrestors are distribution, lowvoltage, station, dc, neutral protection, fiber tube, signal, network, etc. The original lightning arrester was nothing more than a spark. Application and analysis for surge arrester on lightning protection of distribution network article pdf available in matec web of conferences 3410. History of lightning protection system design in tactical sstems many older communication systems do not have lightning protection incorporated into their design. All lightning arresters are designed to become more conductive when the applied voltage becomes sufficiently high. Lightning arrester working of lightning arrester types. Dec 11, 2014 types of lightning arresters there are several type of lightning arrester in general use.
The lightning arresters or surge diverter provide protection against such surges. Operating instructions surge arresters types polim and mwkmwd. These lightning arresters are manufactured with the optimum utilization of premium quality stainless steel. A lightning arresters or a surge diverter is a protective device which conducts the high voltage surges on the power system to the ground.