UA-91986269-2
33575

SİLİKON İZOLATÖR

POLIMER Surge Arresters are used for the protection of switchgear, transformers and other equipment in high voltage systems against atmospheric and switching over-voltages. For use when requirements of lightning intensity, energy capability and pollution are moderate. Application Surge arresters complete our reliable product solutions designed for fault free distribution of electricity. The surge arresters have been developed to endure the different temperature variations. The surge arresters have been designed and type tested according to IEC60099-4:2004 standard. BORAGHTAJHIZ PARS CO. Technical Data : Guaranteed Specification for Polymeric Type Surge Arresters Rated Voltage KV Continuous Operating Voltage KV 8/20 µs Lightning Impulse Residual Voltage kA 30/60 µs Switching Impulse Residual Voltage KV 1/10 µs 10 KA Steep Impulse Residual Voltage KV Creepage Distance mm Arrester Height mm 5KA 10KA 20KA 250A 500A 1000A 24 19.2 66.67 72.00 77.33 52.27 53.33 58.13 74.67 877 420 27 21.6 75.00 81.00 87.00 58.80 60.00 65.40 84.00 1005 465 30 24.0 83.33 90.00 96.67 65.33 66.67 72.67 93.33 1005 465 33 26.4 91.67 99.00 106.33 71.87 73.33 79.93 102.67 1133 510 36 28.8 100.00 108.00 116.00 78.40 80.00 87.20 112.00 1133 510 Benefits Direct-molded construction POLIMERS Surge Arrester consists of high performance metal oxide disks molded in a shatter-proof polymer housing. The POLIMERS Surge Arrester now has a new construction to enhance overall lifetime performance. The metal oxide disks are enclosed in a support assembly consisting of reinforced epoxy/fiberglass loops connecting the upper and lower aluminum end pieces. The silicone polymer material is then molded directly to the metal oxide loop assembly eliminating any air pockets which could cause moisture ingress over time. 100% silicone based housing The silicone rubber housing features high tracking and arc resistance, excellent hydrophobic properties, and resistance to weathering, UV radiation and pollution. Reduced electrical clearance Polymer construction has resulted in much smaller housing dimensions in comparison with porcelain units of the same voltage rating. This size reduction enables efficient use of space for switchgear enclosures, mobile substations and other applications where space restrictions are present. . Lightweight The POLIMER Surge Arrester is less than 50 percent the weight of its porcelain counterpart, which results in easier handling and installation. Reliability, quality and protection excellence Qualification testing: Decades of insulating materials, arrester design and development experience has been combined to create the DA series arrester. The basic construction comprises of high energy ZnO varistors, assembled within a flame retarded composite laminate tube. The following design IEC 60099-4 design type tests have been carried out on the DA series arresters: 1) Insulation withstand tests on the arrester housing 2) Residual voltage tests 3) Long-duration current impulse withstand test 4) Operating duty tests 5) Short-circuit tests 6) Internal partial discharge tests 7) Test of the bending moment 8) Moisture Ingress Test 9) Weather Ageing Test 10)Power –frequency voltage versus time characteristics on an arrester The silicone insulating material has been designed and optimised for arrester application. The following additional testing was performed in the qualification of the silicone: 1) Tracking and Erosion 2) UV testing 3) Thermal endurance 4) Dielectric testing 5) Flammability testing. 6) Long term water immersion testing Production and Quality: All our arrester production facilities have implemented QC . and QA procedures according to international standards to ensure test programs that guarantee quality conforming products. 100% of all Varistors are tested and stamped with unique varistor residual and reference voltage. The following tests are performed on varistors: 1) Residual voltage 2) Reference voltage 3) Leakage current 4) Physical examination to screen damaged varistors 5) LOT test: High current impulse test 6) LOT test: Aging test At the end of the arrester assembly process, the following mandatory IEC tests are completed on every arrester: visual inspection, reference voltage test and PD testing.  . MV Surge Arresters with external spark-gaps Protection system MORE for medium voltage transformer overhead lines This type of surge arresters is designed to protect the insulator assembly at transformers from the lightning over - voltages. It is connected parallel to the insulator assembly. It is defined as a device that contains a non-linear metal oxide resistor element in its arrester body (MORE) and an external series gap to isolate the MORE from the system. The protection is accomplished by raising the spark-over level of the external series gap to a level that isolates the arrester from power frequency over voltages and from the worst case switching over voltages expected on the line which it is applied. The external series gap acts as an isolating apparatus in the event of arrester body failure. . Porcelain Surge Arrester Description: 1.Certificate:ISO9001:2008 2.Housing: porcelain 3.Standards: IEC 60099-4 . Features: Reliability and excellent protection based on years of experience and expertise in surge protection. Good anti-moisture capability, resistant to pollution. Long life and lightweight. Easy installation and maintenance. Good sealing capability to ensure reliable operation. High energy absorption ability. Technical data: Guaranteed Specification for Porcelain Type Surge Arresters Rated Voltage KV Continuous Operating Voltage KV 8/20 µs Lightning Impulse Residual Voltage kA 30/60 µs Switching Impulse Residual Voltage KV 1/10 µs 10 KA Steep Impulse Residual Voltage KV Creepage Distance mm Arrester Height mm 5KA 10KA 20KA 250A 500A 1000A 27 21.6 75.00 81.00 87.00 58.80 60.00 65.40 84.00 605 450 31.5 25.2 87.50 94.50 101.50 68,60 70.00 76.30 98.00 748 510 36 28.8 100.00 108.00 116.00 78.40 80.00 87.20 112.00 990 590 Technical data for all arrester type Nominal Discharge Current (KA) 10 4/20 µs High Impulse Current Withstand (KA/) 100 2000 ms Rectangular Wave Current Withstand (A) 250