{"id":2282,"date":"2024-09-05T12:58:43","date_gmt":"2024-09-05T10:58:43","guid":{"rendered":"https:\/\/gezhi-tech.com\/?p=2282"},"modified":"2025-09-27T17:50:23","modified_gmt":"2025-09-27T15:50:23","slug":"clause-3-how-to-understand-the-definition-of-safety-extra-low-voltage","status":"publish","type":"post","link":"https:\/\/gezhi-tech.com\/tr\/clause-3-how-to-understand-the-definition-of-safety-extra-low-voltage\/","title":{"rendered":"Madde 3 \u2013 \u201cG\u00fcvenlik ekstra d\u00fc\u015f\u00fck voltaj\u201d tan\u0131m\u0131n\u0131n anla\u015f\u0131lmas\u0131"},"content":{"rendered":"g\u00fcvenlik ekstra d\u00fc\u015f\u00fck voltaj\u0131: iletkenler aras\u0131nda ve iletkenler ile toprak aras\u0131nda 42 V’u a\u015fmayan voltaj, y\u00fcks\u00fcz voltaj 50 V’u a\u015fmaz Besleme \u015febekesinden g\u00fcvenli ekstra d\u00fc\u015f\u00fck voltaj elde edildi\u011finde, g\u00fcvenlik izolasyonu yoluyla olmal\u0131d\u0131r izolasyonu \u00e7ift izolasyon veya takviyeli izolasyon gerekliliklerine uygun olan ayr\u0131 sarg\u0131l\u0131 bir transformat\u00f6r veya konvert\u00f6r.
NOT 1 Belirtilen gerilim limitleri, g\u00fcvenlik izolasyon transformat\u00f6r\u00fcn\u00fcn nominal geriliminde beslendi\u011fi varsay\u0131m\u0131na dayanmaktad\u0131r.
NOT 2 G\u00fcvenlik ekstra d\u00fc\u015f\u00fck voltaj\u0131 SELV olarak da bilinir.<\/em>
\n\u00d6ns\u00f6z-1 . Ayn\u0131 zamanda bu maddede tan\u0131mlanan “g\u00fcvenlik”, SELV’in kullan\u0131c\u0131lar taraf\u0131ndan do\u011frudan dokunulabilmesi i\u00e7in mutlak g\u00fcvenlik anlam\u0131na da gelmemektedir. Kullan\u0131c\u0131lar yaln\u0131zca B\u00f6l\u00fcm 8.1.4’\u00fcn gerekliliklerini kar\u015f\u0131layan SELV devrelerine dokunabilir. Bu voltaj genellikle voltaj\u0131n bir g\u00fcvenlik izolasyon transformat\u00f6r\u00fc veya ayr\u0131 sarg\u0131l\u0131 bir d\u00f6n\u00fc\u015ft\u00fcr\u00fcc\u00fc arac\u0131l\u0131\u011f\u0131yla d\u00fc\u015f\u00fcr\u00fclmesiyle elde edilir. Genellikle bir g\u00fcvenlik izolasyon transformat\u00f6r\u00fc arac\u0131l\u0131\u011f\u0131yla elde edilir. Burada ayr\u0131 bir sarg\u0131ya sahip g\u00fcvenlik izolasyon transformat\u00f6r\u00fc veya d\u00f6n\u00fc\u015ft\u00fcr\u00fcc\u00fc, birincil sarg\u0131n\u0131n ve ikincil sarg\u0131n\u0131n yap\u0131 olarak fiziksel olarak ayr\u0131lmas\u0131n\u0131, yani birincil ve ikincil sarg\u0131lar\u0131n do\u011frudan temas halinde olmamas\u0131n\u0131 sa\u011flayabilir; Ayr\u0131 sarg\u0131larla bu devre ayr\u0131m\u0131na kar\u015f\u0131l\u0131k gelen voltaj d\u00fczenleme y\u00f6nteminin yayg\u0131n bir \u00f6rne\u011fi, bir direnci ve bir kapasit\u00f6r\u00fc 220V devresine seri olarak paralel ba\u011flamak i\u00e7in kullan\u0131lan RC d\u00fc\u015f\u00fcrme y\u00f6ntemidir. RC d\u00fc\u015f\u00fcrme y\u00f6nteminde, y\u00fcksek gerilim k\u0131sm\u0131 ve al\u00e7ak gerilim k\u0131sm\u0131 devreye ba\u011flan\u0131r. A\u00e7\u0131k\u00e7as\u0131, devreyi fiziksel yollarla ay\u0131rman\u0131n \u00f6nceki y\u00f6ntemi daha g\u00fcvenlidir. Sadece basit bir fiziksel ay\u0131rma olsa bile yine de g\u00fcvenlik gerekliliklerini kar\u015f\u0131layam\u0131yor. Standard\u0131n gerektirdi\u011fi izolasyonun, \u00e7ift izolasyon veya g\u00fc\u00e7lendirilmi\u015f izolasyon gereksinimlerini kar\u015f\u0131lamas\u0131 gerekmektedir. Basit\u00e7e s\u00f6ylemek gerekirse, y\u00fcksek gerilim k\u0131sm\u0131 ile al\u00e7ak gerilim k\u0131sm\u0131 aras\u0131nda d\u00fc\u015f\u00fck s\u0131cakl\u0131k direncine sahip ince bir plastik levha gibi \u00e7ok basit bir yal\u0131t\u0131m varsa, bu yal\u0131t\u0131m\u0131n y\u00fcksek s\u0131cakl\u0131k veya y\u00fcksek gerilim ko\u015fullar\u0131 alt\u0131nda bozulmas\u0131 kolayd\u0131r ve temel olarak ba\u015far\u0131s\u0131z olmas\u0131 m\u00fcmk\u00fcnd\u00fcr. Her ne kadar bu plastik tabaka tabakas\u0131 ayn\u0131 zamanda y\u00fcksek gerilim ve al\u00e7ak gerilim devrelerini fiziksel olarak ay\u0131rsa da yal\u0131tkan bir rol oynamaktad\u0131r. \u00c7ift yal\u0131t\u0131m\u0131n ve g\u00fc\u00e7lendirilmi\u015f yal\u0131t\u0131m\u0131n yal\u0131t\u0131m gereksinimleri ayn\u0131 zamanda \u00e7ift koruman\u0131n da bir yoludur.<\/a>Burada SELV’nin voltaj de\u011ferleri ile ilgili d\u00fczenlemelerinin oldu\u011funu da eklememiz gerekiyor. Burada belirtilen voltaj, voltaj\u0131n etkin de\u011feridir. Genellikle voltaj\u0131n tepe de\u011feri etkin de\u011ferden daha y\u00fcksektir ve tepe de\u011feri i\u00e7in madde 8.1.4’te belirtilen voltaj s\u0131n\u0131r\u0131 gerekliliktir. Test gerekliliklerini madde 8.1.4’te ayr\u0131nt\u0131l\u0131 olarak a\u00e7\u0131klayaca\u011f\u0131z. Madde 3’\u00fcn ilk paragraf\u0131n\u0131n Not 2’sinde “NOT 2 \u201cgerilim\u201d ve \u201cak\u0131m\u201d terimleri kullan\u0131ld\u0131\u011f\u0131nda, aksi belirtilmedik\u00e7e r.m.s. de\u011ferleridir.”
\n
\nA\u015fa\u011f\u0131daki \u015fekilde g\u00f6sterildi\u011fi gibi transformat\u00f6rde, birincil ve ikincil sarg\u0131lar\u0131 ay\u0131rmak i\u00e7in diskin i\u00e7ine dikey olarak yerle\u015ftirilmi\u015f \u00fc\u00e7 plastik braket bulunur (birincil ve ikincil sarg\u0131lar d\u0131\u015f tarafta mavi plastik bantla sar\u0131lm\u0131\u015ft\u0131r) ve birincil ve ikincil sarg\u0131lar fiziksel olarak izole edilmi\u015ftir.
\n
\nA\u015fa\u011f\u0131daki \u015fekilde g\u00f6sterildi\u011fi gibi, transformat\u00f6r\u00fcn ortas\u0131nda birincil ve ikincil sarg\u0131lar\u0131n etraf\u0131na sar\u0131lm\u0131\u015f sar\u0131 bant vard\u0131r. G\u00fc\u00e7lendirilmi\u015f yal\u0131t\u0131m i\u00e7in ka\u00e7ak mesafe gereksinimlerini kar\u015f\u0131lay\u0131p kar\u015f\u0131lamad\u0131\u011f\u0131n\u0131 g\u00f6rmek i\u00e7in iki sar\u0131m aras\u0131ndaki siyah braketin ka\u00e7ak mesafesine \u00f6zellikle dikkat etmemiz gerekir. Aksi takdirde transformat\u00f6r, g\u00fcvenlik izolasyon transformat\u00f6r\u00fc olarak de\u011ferlendirilemez.
\n

\n\"\"
\n<\/figure>
\nEmniyet izolasyon transformat\u00f6r\u00fcn\u00fcn yap\u0131s\u0131n\u0131 bir sonraki yaz\u0131m\u0131zda detayl\u0131 olarak anlataca\u011f\u0131z.
\n

\n\"\"
\n<\/figure>
\nWe will explain the structure of the safety isolating transformer<\/strong><\/a> in detail in the next post.
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g\u00fcvenlik ekstra d\u00fc\u015f\u00fck voltaj\u0131: iletkenler aras\u0131nda ve iletkenler ile toprak aras\u0131nda 42 V’u a\u015fmayan voltaj, y\u00fcks\u00fcz voltaj 50 V’u a\u015fmaz Besleme \u015febekesinden g\u00fcvenli ekstra d\u00fc\u015f\u00fck voltaj elde edildi\u011finde, g\u00fcvenlik izolasyonu yoluyla olmal\u0131d\u0131r izolasyonu \u00e7ift izolasyon veya takviyeli izolasyon gerekliliklerine uygun olan ayr\u0131 sarg\u0131l\u0131 bir transformat\u00f6r veya konvert\u00f6r.NOT 1 Belirtilen gerilim limitleri, g\u00fcvenlik izolasyon transformat\u00f6r\u00fcn\u00fcn nominal…<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_kadence_starter_templates_imported_post":false,"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"footnotes":""},"categories":[5],"tags":[167,74,76,89,77,90,91,163,75],"class_list":["post-2282","post","type-post","status-publish","format-standard","hentry","category-terms-and-definitions","tag-8-1-4","tag-insulation-applied-to-live-parts-to-provide-basic-protection-against-electric-shock","tag-insulation-system-comprising-both-basic-insulation-and-supplementary-insulation","tag-voltage-supplied-from-a-source-within-the-appliance-that-does-not-exceed-50-v-between-conductors-and-between-conductors-and-earth-or-functional-earth-when-the-appliance-is-supplied-at-rated-voltage","tag-single-insulation-applied-to-live-parts-that-provides-a-degree-of-protection-against-electric-shock-equivalent-to-double-insulation-under-the-conditions-specified-in-this-standard","tag-voltage-not-exceeding-42-v-between-conductors-and-between-conductors-and-earth-or-functional-earth-the-no-load-voltage-not-exceeding-50-v","tag-transformer-the-input-winding-of-which-is-electrically-separated-from-the-output-winding-by-an-insulation-at-least-equivalent-to-double-insulation-or-reinforced-insulation-that-is-intended-to-supply","tag-selv","tag-independent-insulation-applied-in-addition-to-basic-insulation-in-order-to-provide-protection-against-electric-shock-in-the-event-of-a-failure-of-basic-insulation"],"translation":{"provider":"WPGlobus","version":"3.0.1","language":"tr","enabled_languages":["en","es","ar","de","ja","fr","ru","th","nl","it","fa","ko","pt","hi","ro","tr","vi","id","zu"],"languages":{"en":{"title":true,"content":true,"excerpt":false},"es":{"title":true,"content":true,"excerpt":false},"ar":{"title":true,"content":true,"excerpt":false},"de":{"title":true,"content":true,"excerpt":false},"ja":{"title":true,"content":true,"excerpt":false},"fr":{"title":true,"content":true,"excerpt":false},"ru":{"title":true,"content":true,"excerpt":false},"th":{"title":true,"content":true,"excerpt":false},"nl":{"title":true,"content":true,"excerpt":false},"it":{"title":true,"content":true,"excerpt":false},"fa":{"title":false,"content":false,"excerpt":false},"ko":{"title":true,"content":true,"excerpt":false},"pt":{"title":true,"content":true,"excerpt":false},"hi":{"title":true,"content":true,"excerpt":false},"ro":{"title":true,"content":true,"excerpt":false},"tr":{"title":true,"content":true,"excerpt":false},"vi":{"title":true,"content":true,"excerpt":false},"id":{"title":true,"content":true,"excerpt":false},"zu":{"title":false,"content":false,"excerpt":false}}},"_links":{"self":[{"href":"https:\/\/gezhi-tech.com\/tr\/wp-json\/wp\/v2\/posts\/2282","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gezhi-tech.com\/tr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gezhi-tech.com\/tr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gezhi-tech.com\/tr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gezhi-tech.com\/tr\/wp-json\/wp\/v2\/comments?post=2282"}],"version-history":[{"count":20,"href":"https:\/\/gezhi-tech.com\/tr\/wp-json\/wp\/v2\/posts\/2282\/revisions"}],"predecessor-version":[{"id":2355,"href":"https:\/\/gezhi-tech.com\/tr\/wp-json\/wp\/v2\/posts\/2282\/revisions\/2355"}],"wp:attachment":[{"href":"https:\/\/gezhi-tech.com\/tr\/wp-json\/wp\/v2\/media?parent=2282"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gezhi-tech.com\/tr\/wp-json\/wp\/v2\/categories?post=2282"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gezhi-tech.com\/tr\/wp-json\/wp\/v2\/tags?post=2282"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}