They help reduce costly downtime while protecting sensitive electronic equipment against damaging effects of transients caused by lightning, utility load switching, internal load switching, and more. For other types of gapless surge arresters, simply select the appro priate iec class from the dropdown list, see figure 2. May 05, 2020 press release surge arrester market with covid19 impact analysis. Abb surge arresters are the primary protection against atmospheric and switching over voltages. Abb surge arresters are made of metaloxide mo resistors without spark gaps directly molded in silicone housing, in grey color, and designed. Surge arresters are used for protection of electrical equipment from all kind of overvoltages caused by lightening or switching operations. Each piece of electrical equipment in an electrical system needs to be protected from voltage surges. Low voltage products lovos5 lovos10 low voltage surge. High voltage surge arresters abb ag pdf catalogs technical. This product overview makes it easy to choose the right arrester.
What is the difference between lightning arrester and. Abb high voltage products surge arresters 3 surge arrester from abb switzerland in wettingen abb switzerland ltd. Strong focus on quality at all stages, from raw material through to finished product, ensures that abb surge. Safe and reliable protection of electrical equipment. Z surge impedance of the line 350 400 l length of line in km. The system classifies occurring surge current pulses in three classes and saves the overvoltage events with time and date information time stamp.
Overvoltage protection metal oxide surge arresters in medium. The protective characteristics of surge arresters directly dictate the design of the. The currents passing through the arrester within the range of possibly applied powerfrequency voltages are so small that the arrester almost behaves like an insulator. Polimdpi mediumvoltage surge arresters surge arresters abb. This catalog describes features and ordering information for eatons cooper power series varistar azg4 surge arresters which incorporate the latest in metal oxide varistor mov technology, are totally gapless and are constructed of a single series column of 76 mm diameter mov disks. Mediumvoltage surge arresters siemens provides a wide range of surge arrester product families for the protection of mediumvoltage systems and components up to 72. They are best suited for applications with high mechanical strength demands, high seismic requirements, or sea salt, soot or acid rain and other such harsh environments. 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. Abb surge arresters all the products on directindustry. Tov curve a graph that shows the power frequency withstand voltage vs.
Dutycycle voltage rating ieee the designated maximum permissible voltage between its terminals at which an arrester is designed to perform its duty cycle test. The range comprises of ac and dc solutions up to 1,100kv and arresters for special applications like railways, dcvoltage limiting devices and many other purposes. What is the difference between lightning arrester and surge. Investments in smart grids and energy systems, the need to reduce equipment failure caused by frequent voltage spikes, and aging power infrastructure are driving.
Dynavar arrester for this application is the dynavar 84, with dutycycle rating of 108 kv. Ge offers an extensive line of surge arrester products. Abb has more than 100 years of experience in designing and manufacturing surge arresters and protection devices. 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. Our surge arresters are absolutely reliable and characterized by easy installation, low maintenance costs and an extremely long operating life.
Close cooperation with abbs corporate research center, which is located a short distance from the surge arrester factory, ensures that the current state of the art is. Pexlim is abbs family of siliconehoused arresters that offer unique. The rating of the arrester is defined as the rms voltage at which the arrester passes the dutycycle test as defined by the referenced standard. Metaloxide mo surge arrester without spark gap, designed and type tested. To add surge protection to a singlebushing transformer, use a bushing arrester or an elbow arrester with a feedthrough insert. The arrester is of single pole design, suitable for outdoor use, and designed in accordance with the latest revision of the ansiieee c62. Pi is a gapless abb surge arrester with metaloxide resistors directly molded in. The strategic role of electrification is growing, with urbanization and the world forging ahead to create a lowercarbon future, which abb is supporting with digitally. Abb library could not identify a unique document based on the available parameters. If, however, surge currents in the kiloampere range are injected into the arrester, such as is the case when lightning or switching overvoltages. Table 1 lists arrester ratings that would normally be applied on systems of various linetoline voltages. Industrial solutions products abb industrial solutions. Mwk mediumvoltage surge arresters surge arresters abb.
The 3ej0 and 3ej9 surge arresters are optimized with an extremely low protection level for. Application guide dynavar metaloxide surge arrester. Switching surge current switching surge discharge voltage mcov 2 1. Siliconehoused surge arrester pexlim highvoltage surge arresters. The zinc oxide surge arrester can be used in the following conditions. The xps now has a new construction to enhance overall lifetime performance. Surge arresters transmission products siemens global. The surge arrester has an explosion and shatterresistant design. Abb s electrification business has always been at the forefront of innovative electrification and today is writing the future of safe, smart and sustainable electrification. The 3ej4 surge arrester for indoor use is a cage design surge arrester that offers the same features as the version for outdoor use.
Abb high voltage products surge arresters 3 the route to the right surge arrester from abb switzerland in wettingen abb switzerland ltd. Surge arrester zno block testing english pdf leaflet high voltage surge arresters product. Ultrasil polymerhoused varistar type ui current to previous part number reference. For more information, refer to the product guide surge arresters for railway applications. The active elements zno blocks of abb surge arresters are manufactured using a highly nonlinear ceramic resistor material, composed primarily of zinc oxide mixed with other metal oxides and sintered together. Product brochure type pexlim surge arresters 72362. Nov 18, 2016 a surge arrester is a voltage activated the device that protects computers and other electronic equipment from surges or transient voltages in electrical power or data cables, whether it be from lightning or a switching surge. Surge arresters mv hv 11kv 33kv medium high voltage. The az surge arrester is filled with or drained of the insulating gas via a gas connection. For other applications, such as series capacitors protection, shunt capacitor protection or dc applications, contact your abb sales representative. The voltage drop of the lead wire connecting the arrester to the equipment being protected and the arrester to the ground plane adversely effects the discharge.
Shielded surge arresters metal oxide varistor mov surge. Pexlim metal oxide surge arrester abbs family of hv directmolded polymer arresters pexlim surge arresters are designed to perform under harsh environmental conditions. Short overview about abb surge arresters cover page. Monitoring devices are available to control the status of the surge arresters in ac systems. Overvoltage protection metaloxide surge arresters in. To prevent damage to electrical equipment, surge protection considerations are paramount to a welldesigned electrical. Abb surge arresters are the primary protection against atmospheric and switching over. Abb offers a complete range of surge arresters for high voltage applications comprising of solutions for ac and dc up to 1,100kv as well as special applications.
The 3ej0 and 3ej9 surge arresters are optimized with an extremely low protection level for protection against overvoltages. Intermediate and station class surge arresters ieee iec eaton. This buyers guide deals with high voltage surge arresters for standard ac applications. Type pexlim surge arresters 72362 kv protection of high voltage. They endanger the electrical equipment because for economic reasons the insulation cannot be designed to withstand all possible cases. They are generally connected in parallel with the equipment to be protected to divert. Abb surge arresters are the primary protection against atmospheric and switching overvoltages. Uhv surge arresters are usually installed in the vicinity of the main electrical equipment in substations to limit lightning and switching overvoltage, thereby protecting the electrical equipment in uhv substations. The metal oxide disks are enclosed in a support assembly consisting of reinforced epoxy. Datasheet surge arrester mwd technical data surge arresters with metal oxide resistors without spark gaps mo surge arresters, direct molded silicon housing, grey color, designed and tested according to iec 600994. The selection of the surge arrester depends on the application to be protected. English pdf leaflet high voltage surge arresters product line card english.
Selection of mo surge arresters english pdf application note. Sometimes knowing if a surge has been present on a system is important, and a. Surge arrester market report size, share, growth, analysis. Abb surge arresters are made of metaloxide mo resistors without spark gaps directly molded in silicone housing, in grey color, and designed and tested according to iec 600994 and iec 628481. Surge arrester market with covid19 impact analysis.
Lightning arrester normally a spark gap device connected between each leg of a pow. Short circuit test of aresster before the installation of surge arrester many test are applied on this to mark it as verified. Abb offers the most comprehensive portfolio of type 1 and type 2 surge protective devices that can be externally or internally mounted. Emerson electric, eaton corporation plc, siemens ag published. Abb offers a complete range of surge arresters for high and medium voltage applications. Contents definition of surge arresters 02 siemens surge arresters for any requirement 04 always the best solution 05 history timeline 06 movs. Abb surge arresters buyers guide edition 5, 200310 a2 introduction safe, secure and economic supply of electricity with abb surge arresters abb surge arresters are the primary protection against atmospheric and switching overvoltages. The overvoltage capability of dynavar can be taken advantage of for ungrounded or impedance grounded 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. Mwd is a shedless abb surge arrester with metaloxide resistors directly. The application and selection of lightning arresters. The global surge arrester market is estimated to be usd 1. Surge arrester technology and areas of application all siemens surge arresters are subject to certified quality management and comply with international standards. We have created a selection table for each of our product groups.
Since introducing the worlds first metal oxide arrester in 1976, offering new concepts in. Product overview abb high voltage products surge arresters. For the highly unlikely case of the az surge arrester being overloaded, blowout valves with. A gas density monitoring device used to monitor the sf6 gas compartment is connected to the other gas connection. Overvoltage protection metal oxide surge arresters in medium voltage systems 7 overvoltages in electrical supply systems result from the effects of lightning incidents and switching actions and cannot be avoided. A flexible siliconehoused arrester family for line discharge class 2 to 5 and system voltage. Abb ability wireless monitor for surge arrester english pdf catalogue type texlim surge arresters 123800kv english pdf catalogue. View pdf catalogues and other online documentation. Distribution systems siemens 3ek cage design distribution class surge arrester product. A surge arrester works by diverting the extra voltage into the earth wire, rather than flowing through the electronic. In the left hand column of the selection table you will. Intermediate and station class surge arresters ieee iec.
Consult abb ags entire high voltage surge arresters catalogue on directindustry. Abbs electrification business has always been at the forefront of innovative electrification and today is writing the future of safe, smart and sustainable electrification. Product overview surge arresters document native title. Abb lovos5 and abb lovos10 low voltage lv surge arresters the principal active element of abb lv low voltage lovos surge arresters is a metal oxide varistor characterised by high nonlinearity at a working voltage mainly a capacity current flows smaller than 1 ma. Twobushing transformer to add surge protection to a twobushing transformer at the end point of a radialfeed circuit, add an elbow arrester to the unoccupied bushing or use a bushing arrester. Mediumvoltage arresters for distribution networks surge. Application guidelines overvoltage protection metal oxide.
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