Short circuit behaviour surge arresters and counters. Application of metaloxide surge arresters for alternatingcurrent systems ieee power engineering society sponsored by the surgeprotective devices committee cj u a 3 published b y the institute of electrical and electronics engineers, inc. The energy overload is calculated for a surge protective device following a simulation of. Tov is important when selecting surge arrester rated voltage 3 4. Selection of surge protective devices for low voltage. 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. Abb high voltage products surge arresters 3 the route to the right surge arrester from abb switzerland in wettingen abb switzerland ltd. 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. Metal oxide high voltage lightning arrester 220kv 10ka with. The application and selection of lightning arresters. Class 2 surge arrester with varistor surge protection for lv networks. Introduction two international standards are existing for surge protective devices, the standards iec 600994 for high voltage systems 1, and iec 616431 for low voltage systems 2. Highlights measurement errors in surgearrester residual voltage using highvoltage dividers.
Surge arrester designed to protect 12, 24 and 36 kv class components, including transformers, equipment, cable and accessories from high voltage surges resulting from lightning or switching. Surge arresters are installed on a transformer to protect it from overvoltage transients. Measurements of the residual voltage of the metal oxide surge arrester indicate dynamic characteristics, and. Surge arrester for protecting coaxial antenna systems of mobile radio stations. Metaloxide surge arresters in highvoltage power systems. Check response of different ddot probe designs against uncompensated capacitive divider. All surge arrester accessories are made from corrosionresistant materials. Since introducing the worlds first metal oxide arrester in 1976, offering new concepts in. Abb low voltage lv surge arresters abb lovos 5 and lovos. It has been designed to be used with the 430tb or 434tb separable tee connector. Ssis parallel connected medium voltage surge protective devices 1 kvrms to 7. For low voltages, this risk is predominant in the fields of power.
Abb switzerland ltd surge arrester division walter. Lightning and surge protection nominal impulse resistance voltage of equipment acc. Surge arrester should have short circuit current value level similar to cutter in closest vicinity. Surge arresters over voltage protection basic function of a surge arrester is to limit overvoltages to acceptable limits.
Although it is not necessary for the casual user to have a complete understanding of an arresters reference voltage, it is an important characteristic to. Cables overvoltage protection english pdf application note. For surge arrester applications the solidly grounded classification is usually found in electric. If short circuit resistance is selected low, surge arrester may be fragmented and result in great damages to its place. 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. The endside distance between the side electrodes is greater than the distances between a respective side electrode and the central electrode.
The xps arrester is designed to meet the following performance data. The highly nonlinear voltagecurrent characteristic of varistors enables connecting of an arrester between the phase line and earth. Surge arresters are used to protect electrical equipment, such as transformers, circuit breakers, and. Acceptable limit means limiting over voltages to below bil of equipment being protected. A surge arrester is connected to each phase conductor just before it enters the transformer. Nec article 280 mentioned that the conductors for the surge arresters should not be longer than necessary, and unnecessary bends should be avoided. The advantage of this is that you can download the correct. Pdf on jun 28, 2016, waluyo and others published testing performance of low voltage arresters. Its a tube filled with inert gas and 2 electrodes spaced apart at a specific distance to produce a spark at the rated voltage when a surge hits the electrodes the voltage ionizes the gas and produces a plasma bridge that acts as a low resistance. Pdf line surge arrester protection design for an 380 kv. Testing performance of low voltage arresters article pdf available in journal of power and energy engineering 106 june 2016 with 539 reads how we measure reads. Short circuit behaviour surge arresters and counters james taylor, abb power products, ludvika, sweden abstract by nature, a surge arrester may be overloaded at any time as part of its normal duty.
Our surge protective devices allow your critical systems to stay up and running, keeping your electrical system from suffering. A device designed to protect electrical equipment from high transient voltage and to limit the duration and frequency the amplitude of followcurrent. Transmission networks usually operate with directly grounded neutral of power transformers. All siemens surge arresters are subject to certified quality management and comply with international standards. The arrester includes two high energy, low voltage metal oxide varistor disks, each mov disk having one side connected to an electrode that is electrically connected to one of the linepotential terminals and having the other side of the mov disks electrically connected to a neutral. Voltage ratings of surge arresters powell industries. For a typical surge protection application an appropriate emtp model is devised. The surge arrester conducts at operating voltage a very low microampere capacity current. For best protection, one msp should be placed at each medium voltage motor or generator. Based on usage examples, this product overview makes it easy to choose the right arrester. Distribution systems siemens 3ek cage design distribution class surge arrester product.
Ge offers an extensive line of surge arrester products. Years of research by eatons cooper power systems division in low voltage secondary. A lowvoltage surge protective device spd limits transient voltages by diverting or limiting surge current. Lightning currentsurge arrester for protecting coaxial antenna systems of mobile radio stations. As cable length increase, the end of cable is further from the arrester and the reflected surge voltage is increased.
Zno electronic high voltage lightning protector 60 444kv large flow capacity. Use in network where the phase conductor is not allowed to appear voltage higher than 280 v. Low resistance during surges, so that overvoltages are limited. C2 edition 4, 200310 abb surge arresters buyers guide abb surge arresters buyers guide edition 4, 200310 c3 selection of arrester system earthing fault duration system voltage um kv min. Surge is reflected double voltage the end of cable. So the load which is connected in parallel with the surge arrester will suffer a voltage as much as upwhich is around 1.
Free download en iec standards for surge protective device spd. Older designs of surge arresters generally consist of silicon carbide resistor blocks in series with air gaps. Surge arrester are usually connected the electrical conductors of a network and earth though they may 3. Low voltage surge arrester on sales quality low voltage. Abb lovos surge arresters are compliant with following standards. Protection of switchgear, transformers and other equipment in high voltage systems against atmospheric and switching overvoltages. The selection of the surge arrester depends on the application to be protected. Metal oxide arresters are designed and tested in accordance with ansiieee c62. A rule of thumb is that the arrester discharge voltage is decreased by 1. Overvoltage protection metaloxide surge arresters in. Explain the principle, design and testing of two different ddot probes. Systems with direct or lowohmic star point earthing. Protecting consumers and their equipment sources of over voltages. A surge arrester works by diverting the extra voltage into the earth wire, rather than flowing through the electronic.
The surge arrester is grounded, thereby providing a low impedance path to ground for energy from an overvoltage transient if one occurs. Our surge arresters are absolutely reliable and characterized by easy installation, low maintenance costs and an extremely long operating life. This will limit the surge voltage seen by the motor to the discharge voltage of the arrester. English pdf catalogue high voltage surge arresters buyer. This places tough demands on their ability to fail safe and not risk damage to equipment or injury to personnel in the vicinity. Arresterfacts 0 understanding arrester discharge voltage. The most effective means of protection is the use of surge arresters in the vicinity of electricity equipment. Spds are a costeffective solution to prevent downtime, improve system and data reliability, and eliminate equipment damage caused by transient voltages and surges for power and signal lines. What is the residual discharge voltage of lightning arrester. The proper voltage rating depends on the system linetoline voltage, the method of system grounding, and the type of surge arrester used.
In connection, there is a need to assess the physical location of the surge arrester, which affects its lead length, as well as the voltage increase due to separation distance effect. Product overview abb high voltage products surge arresters. Low voltage composite surge arresters can be applied to a variety of systems including substation equipment, ac. Selection of station surge arresters for control of slow. Surge arresters spd type for industrial usage, 3 years 7 warranty year warranty the surge arrester consists of a semiconductor valve element that opens at certain conditions. Surge arresters transmission products siemens global. Overvoltage surge protection technical note, europe and apac revision history version 2. The distance between the side electrodes is less than the distance between the end regions of the. As i have found out from web searches,in a surge arrester up is the value of voltage on the terminals of an spd while discharging the surge current. Due to important consideration of protection against lightning surge on electrical, electronic and telecommunication. Risk assessment and evaluating the need for spds in lowvoltage systems, with reference to iec 62305 lightning protection standard and iec 60364 electrical. The rating of the arrester is defined as the rms voltage at which the arrester passes the dutycycle test as defined by the reference standard.
At normal conditions of the system, the surge arrester has infinitely high resistance between the protected conductors and earthing circuit. Each module is a twopart construction, comprising a ts35 dinrail mountable base and a pluggable replaceable arrester, with each singleconductor assembly only. Due to the large amount of earth faults in low voltage networks it is recommended using of surge arresters with continuous operating voltage at least 440 v. A surge arrester includes two side electrodes extending into an interior space formed by means of at least one insulating body and a central electrode. Class 2 surge arrester with combination of varistor surge protection and encapsulated spark gap for protecting single phase lv networks. Us20100309598a1 surge arrester with low response surge. During a switching surge, lightning surge and even high current tov events, the voltage appearing across the arrester can be considered a discharge voltage. Surge arresters without gaps are continuously exposed to operating voltage, and all kinds of overvoltages temporary, switching and lightning. Us5220480a low voltage, high energy surge arrester for. Abb lovos low voltage lv surge arresters 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.
A surge arrester for mounting on a transformer having two linepotential terminals and a neutral terminal. Ensto has been selling its own polymer housed metal oxide surge arresters for more. Mediumvoltage surge arresters digital asset management. Where there are many small motors or explosion proof motors in hazardous locations, a single msp at the motor control center is recommended. Mediumvoltage surge arresters siemens provides a wide range of surge arrester product families for the protection of mediumvoltage systems and components up to 72. Calculation and validation surgearrester residual voltage. Class 1 arresters used in secondary power distribution for electrical distribution lines,available in the voltage rangeof3 kvto 42kv, discharge current of 10 ka. It is indispensable to leave 10 cm free space around. A surge arrester is a device to protect electrical equipment from overvoltage transients caused by external lightning or internal switching events. Pdf testing performance of low voltage arresters researchgate. These arresters carry no current in the normal state.
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