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          • Term
            • lightning arrester
          • Additional fields of expertise
          • Definition(s)
            • A device that connects to and protects an electrical system from lightning and other voltage surges. DIY Doctor
          • Example sentence(s)
            • Lightning arresters are installed on many different pieces of equipment such as power poles and towers, power transformers, circuit breakers, bus structures, and steel superstructures in substations. - United States Department of Labor by
            • The present invention relates to a lightning arrester comprising resistance elements made of zinc oxide as a main component, having a nonlinear voltage-current characteristic and being disposed in an insulating cylinder... - Free Patents Online by
            • This reduction in resistance continues until the lightning arrester acts just like a direct short to ground. Upon reaching this condition, the lightning energy diverts to ground away from the protected equipment, thus reducing the effect of the overvoltage. - EC&M by
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    • Japanese
      • Electronics / Elect Eng
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          • Term
            • 避雷器
          • Additional fields of expertise
          • Definition(s)
            • 避雷器(ひらいき、英: lightning arrester)は、発電、変電、送電、配電系統の電力機器や電力の供給を受ける需要家の需要機器、有線通信回線、空中線系、通信機器などを、雷などにより生じる過渡的な異常高電圧から保護する、いわゆるサージ防護機器のひとつである。 Wikipedia - by Yasutomo Kanazawa
          • Example sentence(s)
            • 雷の電圧は数百KV以上の高い電圧です。その電圧が配電線に落雷し、電気機器に流れると、絶縁破壊されて、たちまち焼損してしまいます。避雷器はこのような異常電圧を電気機器の絶縁耐力よりも低い電圧まで下げて、電気機器を保護する物です。 - 避雷器(LA)とは by Yasutomo Kanazawa
            •  「避雷器」って何か知っていますか?避雷針は有名だと思いますが、避雷器が何かを知っている方は少ないのではないでしょうか?雷の被害は直撃したときだけじゃありません。電気が、コンセントや、電話線などから入り込んできて、家電を壊してしまうかもしれません。そんな被害から守ってくれるのが避雷器なのです。(11月号妹尾先生の寄稿参照)  あまり身近でないと思うかもしれませんが、実は電柱にはほとんどこの避雷器が付いています。そして電車などにも要されているのです。 - ■見聞録(1) 音羽電機工� by Yasutomo Kanazawa
            •  SPD(アレスタ・避雷器)を設置する目的は、過電圧が発生したときに機器のもっているインパルス耐電圧より低い値に過電圧を制限して、機器を破損から守ることにあります。この性能を電圧防護レベルといいます。例えば、耐インパルス電圧が1kVの機器の保護を考えます。  電圧保護レベルが5kA(8/20μs)時に1kVに制限するSPD(アレスタ・避雷器)を使用した場合、保護対象機器は5kA(8/20μs)までの雷サージ電流が発生しても破損しません。一方500A(8/20μs)時に1kVに制限するSPD(アレスタ・避雷器)を使用した場合では、5kA(8/20μs)時には1kVよりも電圧が上がるので破損してしまいます。このようにSPD(アレスタ・避雷器)の電圧防護レベルの性能をチェックする場合は、それがどれだけのサージ電流を流したときの値なのかが重要です。 - SPD(アレスタ・避雷器)� by Yasutomo Kanazawa
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    • Albanian
      • Electronics / Elect Eng
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          • Term
            • rrufepritës
          • Additional fields of expertise
          • Definition(s)
            • Rrufepritësi është një pajisje që lidhet me një sistem elektrik dhe e mbron atë nga rrufetë dhe nga mbitensionit e tjera. Own research - by Juliana Cullafiq
          • Example sentence(s)
            • Instalimet elektrike të fuqisë dhe tensionit, matje-kontrollit e të drejtimit, orifikimit e sinjalizimit të mbrojtjes nga mbitensionet, rrufepritësit e të tokëzimit etj., përfshirë të gjitha llojet e kabllove, përcjellësve dhe tubacioneve, muftat e kokat e kabllove, konstruksionet mbështetëse e varëse, izolatorët mbështetës, kalues e varës dhe shinat elektrike, prizat dhe çelësat e ndryshëm të fuqisë motorike, me përjashtim të blloqeve të gatshme të shinave, paneleve të fuqisë motorike (përfshi matësit, shinat, izolatorët, çelësat e automatët etj. brenda tyre), si dhe të punimeve elektrike brenda kabinave etj. - www.qpz.gov by Juliana Cullafiq
            • Qellimi i kesaj pune praktike eshte njohja dhe menyra e realizimit te modeleve, percaktimi i zonave mbrojtese te rrufepriteseve ne menyre ekesperimentale dhe njohja me pajisjet provuese e imitojne ne miniature shkarkimi e rese ne toke. - www.fie-dsfe.net by Juliana Cullafiq
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