Housed varistar type us, uh and ux stationclass surge arresters. This table documents how well the arrester clamps lightning and switching surges, which is the fundamental purpose of arresters. Lightning strikes near line and induces a voltage on it v max 38. Thirtyfive sic surge arresters of nominal voltages 88 kv, 8 kv, 230 kv, 345 kv and 440 kv, from five manufacturers, were considered. 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 product line card english pdf leaflet banner mediumvoltage surge arresters english pdf rollup. Contents definition of surge arresters 02 siemens surge arresters for any requirement 04 always the best solution 05 history timeline 06 movs. Capability against multiple lightning is greatly improved. Arresters the highquality porcelain housing of the 3ep as well as the special grade sulfur cement bonding of housing and. Application guide dynavar metaloxide surge arrester.
Figure 6 8 kv transmission line 1 figure 7 8 kv transmission line 2 figure 8 69 kv transmission line nb power developed work methods to install many of the lightning arresters safely under energized conditions. Maximum system voltage up to 362 kv comply with ieee c62. Abb surge arresters are the primary protection against atmospheric and switching over voltages. Table i surge arrester data rated voltage system voltage line arresters station arresters 8 kv 120 kv 108 kv 230 kv 210 kv 192 kv the design probability for each flash to. Based on the studies conducted by the national utility. Experience at nb power with surge arresters on transmission lines. For this application, the mcov of the installed arrester must be equal or higher to the continuous voltage between the phase and earth. Application of line surge arresters in power distribution and. An analysis of reducing back flashover faults with surge. Tab 8 surge arresters distribution system engineering course siemens unit 10. 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. The model predicts a 55% reduction in the double circuit. The overvoltage energy absorption capability of our zinc oxide surge arrester is as follows.
The remainder of the arresters were installed during a short outage. These surge arresters cover the system voltages up to 362kv as summarized in fig. The evaluation of the surge arresters was conducted at the ieeusp high voltage laboratory. Arresters can also be installed on all phases to provide even greater protection. An analysis of reducing back flashover faults with surge arresters on 69 8 kv double circuit transmission lines due to direct lightning strikes on the shield wires authors. 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. Lighting and voltage surge lightning can create voltage surges in several of the following ways. Lightning and surge arresters siemens et b1 2005 overview combination arresters are surge arresters that meet the basic requirement of requirement category i and ii, i. Ii design criteria for electrical facilities connected to. Type moa rated voltage kvrms mcov kvrms current impulse residual voltage 2ms rectangular current impulse withstand acrest 410. The appropriate dynavar arrester for this application is the dynavar 84, with mcov of 84 kv.
Available as singleunit arresters rated up to 300 kv or twinunit arrestors for up to 550 kv, minimizing the. Arresters can be installed on the top phase only on single pole construction allowing the top phase to shield the outside phases from lightning. The arrester designs are tested in accordance with the latest industry standards for metal oxide arresters. For ungrounded or impedance grounded systems, the gap. Lightning protection and surge arrester application on nb. Lightning arrester or surge arrestors manufacturers in. Mediumvoltage surge arresters surge arresters are used for protection of electrical equipment from all kind of overvoltages caused by lightening or switching operations. Application studies of line arresters in partially shielded. The zip arresters consistently withstand the following minumum design tests. Surge arresters are the most effective and most costly improvement the least costly improvement is to add a second down lead.
These failures were attributed to a high magnitude. In transmission systems up to 8 kv, in brazil, lightning is especially damaging, even in regions with both average lightning density and soil resistivity, since most tripouts are caused by backflashover. With prior duty equal to the thermal energy rating of 8 kjkv ur. The simulation was done once when the lightning strikes a transmission line and a substation with no lightning arresters in use and once more with their use. Two outages resulted when a 69 kv arrester failed under lightning conditions. Vl and vla arresters are applied on systems below 69 kv and lise 60mm diameter valve elements. High overvoltage energy absorption capability the zinc oxide arresters can absorb all kinds of energy of lightning and switching surge. Abb has more than 100 years of experience in designing and manufacturing surge arresters and protection devices. Intermediate and station class surge arresters ieee iec eaton. Pdf energy discharge capability of surge arrester for.
Product brochure type pexlim surge arresters 72362. The hollow core type arrester is built with extrahigh, energyrated. The appropriate dynavar arrester for this application is the dynavar 84, with dutycycle rating. The program atpdraw alternative transient program was used to simulate the problem and was applied on a part of a power network. Shreem as a company grown from capacitor manufacturing and turnkey jobs in project started no of divisions to fulfill its projects division. Type pexlim surge arresters 72362 kv protection of high voltage system assets. Request pdf an analysis of reducing back flashover faults with surge arresters on 698 kv double circuit transmission lines due to direct lightning strikes on the shield wires back flashover.
When arresters are applied to protect systems from lightning or switching surges, they are installed between the phase and earth. Lightning overvoltage has been identified as the major problem of overhead transmission lines tripping in malaysia due to high incidence of keraunic activities. A 196 175 8 100 50 66 kv sm 72,5140325 50 60 48 10 31,5 ka 0,2s clase a 222 198 156 100 50 45 kv sl 52. Lightning arrester or surge arrestors manufacturers in india. Pdf theoretical and analytical investigation of lightning over. Highvoltage surge arresters digital asset management. For example, a 8 kv system usually has a maximum linetoline continuous voltage of 145 kv rms. The first devices are of the socalled cathode drop type. Our permanent research and development and the concerted knowhow in our factories give our surge. The principal characteristics of each type of surge arrester are summarized in table 1. The overvoltage capability of dynavar can be taken. Diagnostic of silicon carbide surge arresters of substation. Type polimhm surge arresters maximum system voltage 2. The lightning arrestors are used for protection of incoming and outgoing line and also of the power transformers from lightning surge as well as from power frequency over voltage.
Application studies of line arresters in partially. The application on 8 kv systems has been more successful than in lower. This decision is based on whether or not the system is grounded and the method of system grounding. Illustration of 10 kv ultrasil polymerhoused varistar uxl high strength.
Ultrasil polymerhoused varistar stationclass surge arresters. Vx arresters apply for system voltages 500 kv and above and utilize. High voltage surge arresters station class product overview. Abb offers a complete range of surge arresters for high and medium voltage applications. Surge and lightning arresters eaton s mission is to improve the quality of life and the environment through the use of power management technologies and services. Discharge voltage table in every arrester datasheet, you will find a most important table about the discharge voltage of the arrester in question. Lightning performance of transmission line with and. The appropriate dynavar arrester for this application is the dynavar 84, with dutycycle rating of 108 kv. Pdv100 arresters are tested to meet or exceed the requirements of iec 600994, 200405 edition 2.
The station arresters are built to exacting specifications and tested to ieee or iec requirements for years of reliable service. Pdf one of the main problems in high voltage networks is over voltages due to lightning. Improving lightning performance of the lines is crucial to avoid physical damage to the system equipment, which may result in service interruptions to the electricity consumers. The ge tranquell line of surge arrester products provide excellent protective characteristics.
Lamco offers a complete range of surge arresters uhv, ehv, mhv and lhv ac dc solutions upto 1200kv. Arresters with lower or higher rated voltages may be available on request for special applications. It can strike the overhead power line which enters your house, or a main power line that is blocks away from your home. Amtrak converter station recorded video of a 8 kv lightning arrestor blowing off the steal. Xps station class siliconehoused arresters metal oxide surge arrester xps 2 performance data maximum system voltages vm 2. Computational analysis with the aid of alternative transient programelectromagnetic transient program atpemtp simulations was performed on a section of the affected lines to. Medium 20mm kv um heavy 25 mm kv um very heavy 31 mm kv um application classification. Vn and vs arresters cover the range of system voltages from 69 kv thru 400 kv and utilize 75nm diameter valve elements. The scope of this document is to provide technical requirements for the supply of hv surge arresters for system from 12 kv to 245 kv in the enel group distribution companies, listed below. Pdf brazilian production development of class 2 polymeric surge. Single column polymeric surge arresters ieee energy single column polymeric surge arresters ieee paa pba pca maximum system voltage umax kv 145 242 420 system voltage unom kv 8 230 400 lightning impulse classifying current. Table i surge arrester data rated voltage system voltage line arresters station arresters 8 kv 120 kv 108 kv 230 kv 210 kv 192 kv the design probability for each flash to the shield wires.
Illustration of 10 kv ultrasil polymerhoused varistar stationclass arrester. The lightning performance of transmission lines is very important for electric utilities around the world, since lightning is a major cause of outages of overhead lines. Transmission line substation gis hvdc railroad, generator, motor, reactor, capacitor and svc protection ieeeiec lightning arresters ieeeiec lightning arresters. Intermediate and station class surge arresters ieee iec. Back flashover faults resulting from lightning strokes hitting the shield wires or towers are one of the major causes of power interruptions on the doublecircuit 698 kv overhead transmission lines in jamaica. Class surge arrester incorporates the industry recognized superior silicone rubber. Arresters for 8 kv and 230 kv applications are also available. Surge arrester data rated voltage system voltage line arresters station arresters 8 kv 120 kv 108 kv 230 kv 210 kv 192 kv the design probability for each flash to the shield wires is then 0.
Mar 30, 2011 lighting and voltage surge lightning can create voltage surges in several of the following ways. Jul 25, 2014 amtrak converter station recorded video of a 8 kv lightning arrestor blowing off the steal. On three phase systems, the line to ground voltage is equal to the phase. Eaton s cooper power series arresters range from intermediate through stationclass arresters up to 396 kv. Toshiba s directly molded polymer surge arresters, which are the gapless zno element type, comply with ieee standard c62. I o is peak lightning current h a is average height of line y is the distance from line of lightning stroke most typical of lightning fashovers on a distribution line much less energy than a direct strike.
Ii design criteria for electrical facilities connected to the. The application and selection of lightning arresters. Te connectivity hv surge arresters are designed and manufactured to the current. Design of lightning arresters for electrical power systems. Medium 20mmkv um heavy 25 mmkv um very heavy 31 mmkv um application classification.
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