{"id":4275,"date":"2026-09-16T18:24:56","date_gmt":"2026-09-16T18:24:56","guid":{"rendered":"https:\/\/huyuglobal.com\/?p=4275"},"modified":"2026-09-16T18:26:33","modified_gmt":"2026-09-16T18:26:33","slug":"curve-breaker-definition","status":"publish","type":"post","link":"https:\/\/huyuglobal.com\/tr\/blog\/curve-breaker-definition\/","title":{"rendered":"E\u011fri Kesici Tan\u0131m\u0131: B, C ve D Trip E\u011frileri Ger\u00e7ekte Ne Anlama Gelir"},"content":{"rendered":"<p>Bir e\u011fri kesici yeni bir kesici t\u00fcr\u00fc olmayabilir ancak devrenin her motor a\u00e7\u0131ld\u0131\u011f\u0131nda atmas\u0131n\u0131 veya bir tel yanarken kapal\u0131 kalmas\u0131n\u0131 sa\u011flayan \u00f6nceden ayarlanm\u0131\u015f bir e\u011fri taraf\u0131ndan belirlenen atma s\u00fcresine sahip bir kesici anlam\u0131na gelir. Ba\u015fl\u0131k ak\u0131mla ilgili olmad\u0131\u011f\u0131 i\u00e7in yanl\u0131\u015f anla\u015f\u0131lmas\u0131 kolayd\u0131r, bunun yerine kesicinin belirli bir nominal ak\u0131m oran\u0131na tepki h\u0131z\u0131yla ilgilidir. Bu nedenle amperaj de\u011feri ne olursa olsun, yanl\u0131\u015f e\u011friyi k\u0131rmak soruna \u00e7\u00f6z\u00fcm olmad\u0131\u011f\u0131 anlam\u0131na gelir; bu y\u00fczden ayn\u0131 can s\u0131k\u0131c\u0131 atma, bir m\u00fchendisin daha b\u00fcy\u00fck bir kesici aramas\u0131na neden olurken, sadece ad\u0131ndaki bir harfin de\u011fi\u015ftirilmesiyle kolayca \u00e7\u00f6z\u00fclebilir. Bu k\u0131lavuz, atma e\u011frisinin tan\u0131m\u0131n\u0131 sa\u011flar, e\u011friler ve atma seviyeleri hakk\u0131nda a\u00e7\u0131klamalar verir ve neden do\u011fru se\u00e7ilmelerinin gerekli oldu\u011funu a\u00e7\u0131klar.<\/p>\n<blockquote><p>\u00d6zetlemek gerekirse, bir e\u011fri kesici, standart e\u011friler (B, C veya D ile etiketlenmi\u015f) kullanan belirli bir devre kesici t\u00fcr\u00fcd\u00fcr; her e\u011fri, manyetik atma valfinin ayar\u0131n\u0131 g\u00f6steren zaman-ak\u0131m atma karakteristi\u011fini g\u00f6sterir. Farkl\u0131 devre kesici t\u00fcrlerinin In ak\u0131m\u0131na dayal\u0131 farkl\u0131 atma ayarlar\u0131 vard\u0131r. E\u011fri kesicinin atma ak\u0131m\u0131, IEC\/EN 60898-1 standard\u0131na g\u00f6re a\u015fa\u011f\u0131daki tabloda tan\u0131mlanm\u0131\u015ft\u0131r; B tipi kesici 3 ila 5 kat In\u2019de, C tipi 5 ila 10 kat In\u2019de ve D tipi 10 ila 20 kat In\u2019de atmal\u0131d\u0131r. Termal karakteristikler t\u00fcm 3 kesici t\u00fcr\u00fc i\u00e7in ayn\u0131d\u0131r; ancak anl\u0131k atma ak\u0131m\u0131 farkl\u0131d\u0131r. B\u00f6ylece, \u00f6rne\u011fin, B tipi kesiciler d\u00fc\u015f\u00fck giri\u015f ak\u0131m\u0131na sahip elektronik y\u00fcklerle kullan\u0131labilir, C tipi kesici kar\u0131\u015f\u0131k tip y\u00fckler ve normal motorlarla kullan\u0131labilir ve son olarak D tipi kesici a\u011f\u0131r giri\u015f ekipmanlar\u0131 i\u00e7in tasarlanm\u0131\u015ft\u0131r.<\/p><\/blockquote>\n<h2>\u201cE\u011fri Kesici\u201d Ne Anlama Gelir<\/h2>\n<p>Bu ifade, anahtar\u0131n\u0131 atma zaman\u0131n\u0131n tek bir noktas\u0131 yerine \u00f6nceden ayarlanm\u0131\u015f bir zaman-ak\u0131m karakteristi\u011fine g\u00f6re \u00e7al\u0131\u015fan bir devre kesici t\u00fcr\u00fcn\u00fc tan\u0131mlar. Her termal manyetik minyat\u00fcr devre kesicinin kendi \u201ce\u011frisi\u201d vard\u0131r. \u201cE\u011fri\u201d, bu ekipman\u0131n \u00e7e\u015fitli ak\u0131mlara maruz kald\u0131\u011f\u0131nda nas\u0131l davrand\u0131\u011f\u0131n\u0131 tan\u0131mlayan terimin ad\u0131d\u0131r.<\/p>\n<p>Bu s\u00fcre\u00e7ten sorumlu iki mekanizma vard\u0131r. Birincisi, i\u00e7inden ge\u00e7en ak\u0131mla \u0131s\u0131nan bimetalik bir \u015ferit olan termal cihazd\u0131r. A\u015f\u0131r\u0131 y\u00fck olu\u015fursa, \u015ferit yava\u015f yava\u015f b\u00fck\u00fcl\u00fcr ve atar; b\u00f6ylece hem kablolaman\u0131n yava\u015f a\u015f\u0131r\u0131 \u0131s\u0131nmas\u0131na kar\u015f\u0131 koruyucu bir anlam ta\u015f\u0131r hem de a\u015f\u0131r\u0131 y\u00fck artt\u0131k\u00e7a h\u0131zlanan ancak anl\u0131k olmayan ters zaman e\u011frisi olarak adland\u0131r\u0131lan bir e\u011friye g\u00f6re \u00e7al\u0131\u015f\u0131r. \u0130kinci mekanizma, ak\u0131m artt\u0131k\u00e7a devreye uygulanan kuvveti art\u0131ran manyetik cihaz veya solenoiddir. \u0130\u015fte e\u011frinin anl\u0131k k\u0131sm\u0131 b\u00f6yle elde edilir.<\/p>\n<p>Her iki mekanizma da ayn\u0131 kontak mekanizmas\u0131 i\u00e7in kullan\u0131ld\u0131\u011f\u0131ndan, \u201ce\u011fri\u201d bu iki mekanizman\u0131n birlikte nas\u0131l davrand\u0131\u011f\u0131n\u0131 temsil eder: termal cihaz\u0131n \u00e7al\u0131\u015ft\u0131\u011f\u0131 d\u00fc\u015f\u00fck ak\u0131m de\u011ferlerinde d\u00fczg\u00fcn ters-zaman e\u011fimi ve manyetik cihaz kontrol\u00fc ele ald\u0131\u011f\u0131nda e\u011frinin bu k\u0131sm\u0131nda neredeyse dik azalma. E\u011frinin dikle\u015fti\u011fi nokta, harfiyle tan\u0131mlanan de\u011ferdir. Bu prensiple \u00fcretilen cihazlar ve ait olduklar\u0131 aileler, rehberimizde ele al\u0131nm\u0131\u015ft\u0131r. <a href=\"https:\/\/huyuglobal.com\/tr\/blog\/what-is-mccb-and-mcb\/\">MCB ve MCCB se\u00e7imi<\/a>.<\/p>\n<p>Pratik anlamda, e\u011fri bir kalite veya ak\u0131m derecesini temsil etmez. Hem Tip B kesici 20A hem de Tip D kesici 20A, 20A ta\u015f\u0131yarak 20A devresini korur. \u0130ki kesici aras\u0131ndaki tek fark, k\u0131sa s\u00fcreli ne kadar ak\u0131m\u0131 tolere edebildikleridir.<\/p>\n<h2>Bir Kesme E\u011frisinin Anatomisi<\/h2>\n<p>Bir kesme e\u011frisi log-log eksenleri kullan\u0131larak temsil edilir. Yatay eksen, nominal ak\u0131m\u0131n oran\u0131 olarak ak\u0131m\u0131 g\u00f6sterir; yani I\/In. Dikey eksen ise binlerce saniyeden milisaniyelere kadar saniye cinsinden kesme s\u00fcresidir.<\/p>\n<table>\n<tbody>\n<tr>\n<th>E\u011fri B\u00f6lgesi<\/th>\n<th>Ak\u0131m Aral\u0131\u011f\u0131<\/th>\n<th>Mekanizma<\/th>\n<th>Ne t\u00fcr koruma sa\u011flad\u0131\u011f\u0131<\/th>\n<\/tr>\n<tr>\n<td>Kesme olmayan b\u00f6lge<\/td>\n<td>Yakla\u015f\u0131k 1.13 \u00d7 I\u2019ye kadar<sub>n<\/sub><\/td>\n<td>Hi\u00e7bir eleman \u00e7al\u0131\u015fmaz<\/td>\n<td>\u2014 normal y\u00fck ak\u0131m\u0131<\/td>\n<\/tr>\n<tr>\n<td>Belirsiz termal bant<\/td>\n<td>13-1.45 \u00d7 I<sub>n<\/sub><\/td>\n<td>Termal; belirtilen s\u00fcre i\u00e7inde kesme olabilir veya olmayabilir<\/td>\n<td>Marjinal a\u015f\u0131r\u0131 y\u00fck<\/td>\n<\/tr>\n<tr>\n<td>Kesin termal kesme<\/td>\n<td>45 \u00d7 I\u2019nin \u00fczerinde<sub>n<\/sub><\/td>\n<td>Termal, ters zamanl\u0131<\/td>\n<td>Kablo a\u015f\u0131r\u0131 y\u00fck\u00fc ve a\u015f\u0131r\u0131 \u0131s\u0131nma<\/td>\n<\/tr>\n<tr>\n<td>Manyetik ge\u00e7i\u015f<\/td>\n<td>3-5\u00d7 (B), 5-10\u00d7 (C), 10-20\u00d7 (D)<\/td>\n<td>Manyetik, anl\u0131k<\/td>\n<td>K\u0131sa devre ve y\u00fcksek giri\u015f ay\u0131r\u0131m\u0131<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Tablo verilerine g\u00fcvenlik a\u00e7\u0131s\u0131ndan bakmak yerine, bunlar bir ay\u0131r\u0131m hikayesi olarak ele al\u0131nmal\u0131d\u0131r. Termal b\u00f6lge her e\u011fri i\u00e7in tam olarak ayn\u0131d\u0131r \u00e7\u00fcnk\u00fc kablo korumas\u0131, y\u00fck t\u00fcr\u00fc ne olursa olsun ortak bir konudur. Manyetik b\u00f6lgede ise cihaz\u0131n d\u00fc\u015f\u00fck ak\u0131m durumunda hassas ekipman\u0131n korunmas\u0131 i\u00e7in kesip kesmemesi, ancak kabul edilebilir t\u00fcm giri\u015f ak\u0131mlar\u0131n\u0131n g\u00f6z ard\u0131 edilmesi ya da tam tersi \u2013 t\u00fcm giri\u015f ak\u0131mlar\u0131na izin vererek cihaz\u0131n ger\u00e7ek a\u015f\u0131r\u0131 ak\u0131m ar\u0131zalar\u0131na daha yava\u015f tepki vermesi \u00fcreticinin karar\u0131na ba\u011fl\u0131d\u0131r. E\u011frinin harfi bu se\u00e7imin kayd\u0131d\u0131r.<\/p>\n<p>\u00d6nemli bir nokta a\u00e7\u0131k\u00e7a belirtilmelidir \u00e7\u00fcnk\u00fc e\u011fri se\u00e7imi konusunun pratik \u00f6nemini g\u00f6sterir. Giri\u015f ak\u0131m\u0131 ger\u00e7ek ve olduk\u00e7a normal bir fenomendir. Yayg\u0131n bir AC end\u00fcksiyon motoru, \u00e7al\u0131\u015fmaya ba\u015flad\u0131ktan hemen sonra nominal ak\u0131m\u0131n\u0131n be\u015f ila sekiz kat\u0131n\u0131 \u00e7ok k\u0131sa bir s\u00fcre i\u00e7in \u00e7eker. Bir trafo \u015febekeye ba\u011fland\u0131\u011f\u0131nda, ilk d\u00f6ng\u00fclerde nominal ak\u0131m\u0131n\u0131n on ila on d\u00f6rt kat\u0131n\u0131 t\u00fcketebilir. Ak\u0131m de\u011feri bu okumalardan herhangi birinden d\u00fc\u015f\u00fckse, ar\u0131za olmasa bile cihaz her seferinde keser. Ayn\u0131 mant\u0131k, anahtarlama yapan ancak ar\u0131za giderimi yapmayan kontrol kontaklar\u0131 ve koruma cihazlar\u0131 i\u00e7in de uygulanmal\u0131d\u0131r.<\/p>\n<h2>Standart E\u011friler<\/h2>\n<p>IEC\/EN 60898-1, ev ve hafif ticari tesisatlar\u0131n ezici \u00e7o\u011funlu\u011funda kullan\u0131lan \u00fc\u00e7 e\u011friyi tan\u0131mlar.<\/p>\n<table>\n<tbody>\n<tr>\n<th>E\u011fri<\/th>\n<th>Manyetik a\u00e7ma e\u015fi\u011fi<\/th>\n<th>E\u015fik de\u011ferinde tipik a\u00e7ma s\u00fcresi<\/th>\n<th>Tasarland\u0131\u011f\u0131 yer<\/th>\n<th>Yayg\u0131n uygulamalar<\/th>\n<\/tr>\n<tr>\n<td><strong>Tip B<\/strong><\/td>\n<td>3-5 \u00d7 I<sub>n<\/sub><\/td>\n<td>\u00dcst s\u0131n\u0131rda 0,1 s ve alt\u0131nda<\/td>\n<td>Minimum giri\u015f ak\u0131m\u0131 olan y\u00fckler<\/td>\n<td>Ayd\u0131nlatma devreleri, diren\u00e7li \u0131s\u0131tma, ev tipi prizler, PLC ve enstr\u00fcmantasyon beslemeleri, kontrol devreleri<\/td>\n<\/tr>\n<tr>\n<td><strong>Tip C<\/strong><\/td>\n<td>5-10 \u00d7 I<sub>n<\/sub><\/td>\n<td>\u00dcst s\u0131n\u0131rda 0,1 s ve alt\u0131nda<\/td>\n<td>End\u00fcktif ve kar\u0131\u015f\u0131k y\u00fckler<\/td>\n<td>Standart motorlar, pompalar, fanlar, HVAC, ticari priz devreleri, genel end\u00fcstriyel da\u011f\u0131t\u0131m<\/td>\n<\/tr>\n<tr>\n<td><strong>Tip D<\/strong><\/td>\n<td>10-20 \u00d7 I<sub>n<\/sub><\/td>\n<td>\u00dcst s\u0131n\u0131rda 0,1 s ve alt\u0131nda<\/td>\n<td>\u00c7ok y\u00fcksek giri\u015f ak\u0131m\u0131<\/td>\n<td>B\u00fcy\u00fck transformat\u00f6rler, kaynak makineleri, r\u00f6ntgen cihazlar\u0131, jenerat\u00f6rler, b\u00fcy\u00fck motorlar, vin\u00e7ler ve asans\u00f6rler, kompres\u00f6rler<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4276\" src=\"https:\/\/huyuglobal.com\/wp-content\/uploads\/2026\/09\/The-Standard-Curves.webp\" alt=\"Standart E\u011friler\" width=\"1448\" height=\"1086\" \/><\/p>\n<p>Hiyerar\u015fiyi takip etmenin etkili bir yolu, say\u0131 aral\u0131klar\u0131n\u0131n a\u015fa\u011f\u0131 yukar\u0131 ard\u0131\u015f\u0131k olmas\u0131d\u0131r; bu da e\u011frilerin toleransta bir dizi basama\u011fa benzemesi anlam\u0131na gelir. B e\u011frisinde, nominal de\u011ferin ka\u00e7 kat\u0131na kadar atlayabilece\u011fi yakla\u015f\u0131k \u00fc\u00e7 ila be\u015f aras\u0131ndad\u0131r, C e\u011frisinde bu say\u0131 be\u015f ila on aras\u0131nda ve D e\u011frisinde on ila yirmi aras\u0131ndad\u0131r. E\u015fi\u011fin \u00fczerinde her \u015fey neredeyse an\u0131nda tepki verirken, e\u015fik alt\u0131nda her \u015fey daha yava\u015f termal ajan \u00fczerinden i\u015flenmek zorundad\u0131r, e\u011fer i\u015flenebiliyorsa.<\/p>\n<p>Tip C ile ilgili iki \u00f6nemli nokta vard\u0131r. \u0130lk olarak, Tip C asl\u0131nda end\u00fcstrideki \u00e7o\u011fu ticari ve \u00fcretim ekipman\u0131 i\u00e7in varsay\u0131lan se\u00e7enektir \u00e7\u00fcnk\u00fc giri\u015f tolerans seviyesi ile ar\u0131za hassasiyeti seviyesi aras\u0131ndaki denge a\u00e7\u0131s\u0131ndan yeterince iyidir. Ayr\u0131ca, diren\u00e7li y\u00fckler i\u00e7in k\u00f6t\u00fc bir se\u00e7enek de\u011fildir \u00e7\u00fcnk\u00fc kablo korumas\u0131 i\u00e7in hala iyi \u00e7al\u0131\u015f\u0131r. Tip B kullanman\u0131n ana nedeni hassasiyet fakt\u00f6r\u00fcd\u00fcr: daha d\u00fc\u015f\u00fck manyetik bozulmalarda a\u00e7ar ve bu nedenle ar\u0131zan\u0131n geli\u015fmesine ve pahal\u0131 kontrol devresini etkilemesine izin verebilir, Tip B cihaz\u0131 tetiklenmeden \u00f6nce.<\/p>\n<h2>Di\u011fer E\u011friler ve Varyantlar<\/h2>\n<p>B, C ve D standart settir, ancak belirli problemler i\u00e7in birka\u00e7 ba\u015fka \u00f6zellik mevcuttur.<\/p>\n<table>\n<tbody>\n<tr>\n<th>E\u011fri<\/th>\n<th>Manyetik e\u015fik<\/th>\n<th>Ama\u00e7lanan kullan\u0131m<\/th>\n<\/tr>\n<tr>\n<td>Tip A<\/td>\n<td>2-3 \u00d7 I<sub>n<\/sub><\/td>\n<td>\u00c7ok hassas k\u0131sa devre korumas\u0131 gerektiren yar\u0131 iletken ve elektronik y\u00fckler; uzun kablo hatlar\u0131ndaki k\u0131sa devreler<\/td>\n<\/tr>\n<tr>\n<td>Tip Z<\/td>\n<td>2-3 \u00d7 I<sub>n<\/sub><\/td>\n<td>Hassasiyetin \u00f6ncelikli oldu\u011fu elektronik ve kontrol devreleri; farkl\u0131 bir standart k\u00f6keni ile Tip A'ya benzer<\/td>\n<\/tr>\n<tr>\n<td>Tip K<\/td>\n<td>8-12 \u00d7 I<sub>n<\/sub><\/td>\n<td>Tip D'nin a\u015f\u0131r\u0131 duyars\u0131z olaca\u011f\u0131 y\u00fcksek kalk\u0131\u015f ak\u0131m\u0131 olan motorlar, trafolar ve ekipmanlar<\/td>\n<\/tr>\n<tr>\n<td>Tip MA<\/td>\n<td>Sadece manyetik, yakla\u015f\u0131k 12 \u00d7 I<sub>n<\/sub><\/td>\n<td>A\u015f\u0131r\u0131 y\u00fck\u00fcn ayr\u0131 bir a\u015f\u0131r\u0131 y\u00fck r\u00f6lesi taraf\u0131ndan y\u00f6netildi\u011fi motor devre korumas\u0131; termal eleman yok<\/td>\n<\/tr>\n<tr>\n<td>Ayarlanabilir e\u011friler (MCCB)<\/td>\n<td>Saha ayarlanabilir<\/td>\n<td>E\u011frisi ve derecesi kurulum i\u00e7in ayarlanabilen ve yukar\u0131 ak\u0131\u015f cihazlar\u0131yla koordine edilebilen kal\u0131pl\u0131 kesiciler<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Cihaz aileleri aras\u0131ndaki fark bu nedenle \u00f6nemlidir \u00e7\u00fcnk\u00fc mevcut e\u011friler kesicinin \u00fcretiminde kullan\u0131lan standarda ba\u011fl\u0131d\u0131r. IEC 60898-1 uyumlu minyat\u00fcr devre kesiciler, B, C veya D ailelerinden herhangi birinde ayar imkan\u0131 olmayan sabit e\u011friler kullan\u0131r. \u00d6te yandan IEC 60947-2 uyumlu kal\u0131pl\u0131 devre kesiciler, manyetik ve termal ayarlar\u0131n bir miktar ayarlanabilme imkan\u0131 sunar, bu da sabit se\u00e7eneklerin aksine da\u011f\u0131t\u0131m sistemi genelinde senkronizasyon olana\u011f\u0131 yarat\u0131r. Cihaz aileleri aras\u0131ndaki karar, e\u011fri se\u00e7imine de\u011fil, derecelendirme, ar\u0131za seviyesi ve ayarlara ili\u015fkindir.<\/p>\n<h2>B E\u011frisi vs C E\u011frisi<\/h2>\n<p>Bu en yayg\u0131n pratik kar\u015f\u0131la\u015ft\u0131rmad\u0131r ve cevap neredeyse tamamen kalk\u0131\u015f ak\u0131m\u0131na ba\u011fl\u0131d\u0131r.<\/p>\n<table>\n<tbody>\n<tr>\n<th><\/th>\n<th>Tip B<\/th>\n<th>Tip C<\/th>\n<\/tr>\n<tr>\n<td>Manyetik trip band\u0131<\/td>\n<td>3-5 \u00d7 I<sub>n<\/sub><\/td>\n<td>5-10 \u00d7 I<sub>n<\/sub><\/td>\n<\/tr>\n<tr>\n<td>6 \u00d7 I'ye tepki<sub>n<\/sub> ani y\u00fckseli\u015f<\/td>\n<td>Band\u0131n \u00fcst k\u0131sm\u0131nda an\u0131nda a\u00e7ar<\/td>\n<td>Tolerans g\u00f6sterebilir; bireysel cihaza ba\u011fl\u0131 olarak sadece 5 \u00d7 \u00fczerinde a\u00e7ar<\/td>\n<\/tr>\n<tr>\n<td>Ger\u00e7ek ar\u0131zalara duyarl\u0131l\u0131k<\/td>\n<td>Daha y\u00fcksek \u2014 daha d\u00fc\u015f\u00fck b\u00fcy\u00fckl\u00fckteki k\u0131sa devreleri alg\u0131lar<\/td>\n<td>Daha d\u00fc\u015f\u00fck \u2014 d\u00fc\u015f\u00fck b\u00fcy\u00fckl\u00fckteki k\u0131sa devre termal elemana b\u0131rak\u0131labilir<\/td>\n<\/tr>\n<tr>\n<td>Motor devresinde risk<\/td>\n<td>Her kalk\u0131\u015fta gereksiz a\u00e7ma riski y\u00fcksek<\/td>\n<td>\u00c7o\u011fu durumda uygundur<\/td>\n<\/tr>\n<tr>\n<td>Ayd\u0131nlatma veya elektronik devresinde risk<\/td>\n<td>Yok; uygundur<\/td>\n<td>Geli\u015fmekte olan bir ar\u0131zan\u0131n alg\u0131lanmamas\u0131 m\u00fcmk\u00fcn<\/td>\n<\/tr>\n<tr>\n<td>Tipik spesifikasyon<\/td>\n<td>Ev ayd\u0131nlatmas\u0131, prizler, kontrol panelleri, enstr\u00fcmantasyon<\/td>\n<td>Motorlar, pompalar, HVAC, genel ticari ve end\u00fcstriyel da\u011f\u0131t\u0131m<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u0130ki band aras\u0131nda bir \u00f6rt\u00fc\u015fme oldu\u011fu dikkate de\u011ferdir: \u00d6rne\u011fin, Tip B band\u0131n\u0131n orta noktas\u0131nda (4 \u00d7 In) bulunan bir cihaz, Tip C band\u0131n\u0131n alt s\u0131n\u0131r\u0131nda (5 \u00d7 In) bulunan bir cihazdan \u00e7ok uzak de\u011fildir ve asl\u0131nda bantlar \u00fcretim toleranslar\u0131 nedeniyle kesin noktalar de\u011fil aral\u0131klar olarak g\u00f6r\u00fclmelidir. Bu nedenle, bazen gereksiz a\u00e7malar sadece \u00fcretici de\u011fi\u015ftirilerek \u00f6nlenebilir, e\u011fri de\u011fi\u015ftirilmeden, ancak do\u011fru hareket \u00fcreticinin yay\u0131mlad\u0131\u011f\u0131 bilgilerden do\u011fru e\u011friyi kullanmak olacakt\u0131r.<\/p>\n<p>Y\u00fck bir s\u0131n\u0131r\u0131n yak\u0131n\u0131ndaysa \u2014 \u00f6rne\u011fin, bir motorun ba\u015flang\u0131\u00e7 ak\u0131m\u0131 Tip C band\u0131n\u0131n tam kenar\u0131nda ise \u2014 spesifikasyon, hesaplamalarda kullan\u0131lan de\u011ferlerden ba\u011f\u0131ms\u0131z olarak ekipman\u0131n ger\u00e7ek ba\u015flang\u0131\u00e7 ak\u0131m\u0131 verilerine kar\u015f\u0131 do\u011frulanmal\u0131d\u0131r. Asl\u0131nda, kural gere\u011fi bir e\u011fri se\u00e7ip devreye alma sonras\u0131 \u00e7al\u0131\u015fmad\u0131\u011f\u0131n\u0131 fark etmek, bir panelin a\u00e7\u0131lmas\u0131 gereken en yayg\u0131n nedenlerden biridir. Ayn\u0131 cihaz-y\u00fck e\u015fle\u015ftirme prensibi kutup konfig\u00fcrasyonu i\u00e7in de ge\u00e7erlidir ve bunun se\u00e7im mant\u0131\u011f\u0131 rehberimizde a\u00e7\u0131klanm\u0131\u015ft\u0131r. <a href=\"https:\/\/huyuglobal.com\/tr\/blog\/1-pole-vs-2-pole-circuit-breaker\/\">tek kutuplu ve \u00e7ift kutuplu kesiciler<\/a>.<\/p>\n<h2>\u201cAC E\u011frisi\u201d Sorusu<\/h2>\n<p>IEC 60898-1 standard\u0131nda \u201cAC e\u011frisi\u201d tan\u0131m\u0131 yoktur ve bu terimin pratikte kullan\u0131lmas\u0131 nedeniyle bunu a\u00e7\u0131kl\u0131\u011fa kavu\u015fturmak \u00f6nemlidir. \u201cAC e\u011frisi\u201d terimi genellikle a\u015fa\u011f\u0131daki iki \u015feyden birini ifade eder.<\/p>\n<ul>\n<li>Birincisi, AC i\u00e7in derecelendirilmi\u015f ve DC i\u00e7in olmayan bir kesicinin s\u0131n\u0131fland\u0131r\u0131lmas\u0131d\u0131r. Bu ge\u00e7erli bir noktad\u0131r ancak s\u0131n\u0131fland\u0131rman\u0131n kendisinden ziyade cihaz\u0131n derecelendirmesi ile ilgilidir. AC ve DC kesiciler farkl\u0131 tasar\u0131mlara sahiptir, \u00e7\u00fcnk\u00fc DC devrelerinde ark s\u00f6nd\u00fcrmek \u00e7ok daha zordur. Bunun nedeni, ak\u0131m\u0131n bir d\u00f6ng\u00fcde iki kez s\u0131f\u0131ra ula\u015fmamas\u0131 ve bu y\u00fczden arka\u011f\u0131n do\u011fal olarak s\u00f6nd\u00fc\u011f\u00fc bir noktan\u0131n olmamas\u0131d\u0131r. Sonu\u00e7 olarak, DC dereceli kesici, farkl\u0131 e\u011friler dahil olmak \u00fczere farkl\u0131 ark kanallar\u0131, kontaklar ve manyetik sistem tasar\u0131mlar\u0131na sahiptir. AC dereceli bir kesicinin DC devresinde kullan\u0131lmas\u0131, e\u011fri hatas\u0131ndan ziyade bir uygulama hatas\u0131d\u0131r.<\/li>\n<li>Bu terimin ikinci anlam\u0131, konu\u015fmalarda yanl\u0131\u015f anla\u015f\u0131lan Tip C\u2019dir. Bu kar\u0131\u015f\u0131kl\u0131k yo\u011fun bir at\u00f6lyede ve dil s\u0131n\u0131rlar\u0131 aras\u0131nda kolayca olu\u015fabilir. Ger\u00e7ek bir DC uygulamas\u0131 varsa \u2014 g\u00fcne\u015f panelleri, bataryalar, DC \u00e7eki\u015f, telekom g\u00fc\u00e7 \u2014 uygun DC derecelendirmesi ve e\u011friler kullan\u0131lmal\u0131 ve polarite de \u00f6nemli olabilir. Genel olarak, bir spesifikasyonda \u201cAC e\u011frisi\u201d belirtilmi\u015fse, bunun ne anlama geldi\u011fi \u00f6\u011frenilmeli ve sipari\u015f vermeden \u00f6nce cihaz\u0131n derecelendirmeleri do\u011frulanmal\u0131d\u0131r.<\/li>\n<\/ul>\n<h2>E\u011fri Nas\u0131l Se\u00e7ilir<\/h2>\n<p>Uygun e\u011frinin se\u00e7ilmesi basit bir prosed\u00fcrd\u00fcr. Bu i\u015flem s\u0131ral\u0131 olarak yap\u0131lmal\u0131d\u0131r \u00e7\u00fcnk\u00fc e\u011fri se\u00e7imini kablo boyutu tahmininden \u00f6nce atlamak sorunlara yol a\u00e7abilir.<\/p>\n<ul>\n<li>S\u00fcrekli y\u00fck ak\u0131m\u0131n\u0131 hesaplay\u0131n. Bu, kesicinin nominal ak\u0131m (In) de\u011ferini belirler, ancak cihaz\u0131n e\u011frisi ile ba\u011flant\u0131s\u0131 yoktur. Kesici, kabloyu korumak i\u00e7in tasarlanm\u0131\u015ft\u0131r, bu da s\u00fcre\u00e7te kablo ta\u015f\u0131ma kapasitesinin s\u0131n\u0131rlay\u0131c\u0131 fakt\u00f6r oldu\u011fu anlam\u0131na gelir.<\/li>\n<li>Devrenin t\u00fcm elemanlar\u0131n\u0131n ba\u015flang\u0131\u00e7 ak\u0131m\u0131 de\u011ferlerini bulun. Motorlar i\u00e7in bu, \u00e7al\u0131\u015fma ak\u0131m\u0131n\u0131n be\u015f ila sekiz kat\u0131 olurken, trafolar ve benzeri end\u00fcktif y\u00fckler nominal ak\u0131m\u0131n 10 ila 14 kat\u0131 veya daha fazlas\u0131n\u0131 \u00fcretebilir. Diren\u00e7li ve elektronik y\u00fcklerin katk\u0131s\u0131 ihmal edilebilir, \u00e7\u00fcnk\u00fc neredeyse s\u0131f\u0131ra e\u015fittir.<\/li>\n<li>Ba\u015flang\u0131\u00e7 ak\u0131m\u0131n\u0131n nominal ak\u0131ma oran\u0131n\u0131 hesaplay\u0131n. Oran nominal ak\u0131m\u0131n \u00fc\u00e7 kat\u0131n\u0131n alt\u0131ndaysa, bu sorunla ba\u015fa \u00e7\u0131kmak i\u00e7in B tipi e\u011fri uygundur. Oran \u00fc\u00e7 ile be\u015f aras\u0131nda ise, B tipi kullan\u0131labilir ancak C tipi daha g\u00fcvenilir bir se\u00e7im olacakt\u0131r. Oran be\u015ften y\u00fcksekse, C tipi en iyi se\u00e7enektir. Hesaplama on kat\u0131ndan y\u00fcksek bir oran g\u00f6steriyorsa, D tipi e\u011fri uygulanmal\u0131d\u0131r.<\/li>\n<li>Kablo tipi ve kesme s\u00fcresini dikkate ald\u0131\u011f\u0131n\u0131zdan emin olun. Daha y\u00fcksek e\u011fri tipleri b\u00fcy\u00fck ak\u0131mlarda daha iyi \u00e7al\u0131\u015f\u0131r, ancak ayn\u0131 zamanda ortalama ar\u0131za ak\u0131mlar\u0131nda d\u00fczg\u00fcn \u00e7al\u0131\u015fmazlar. \u00d6zellikle uzun kablo hatlar\u0131nda, d\u00fc\u015f\u00fck ar\u0131za ak\u0131m\u0131 durumunda bile devre kesmenin do\u011fru zamanda ger\u00e7ekle\u015fti\u011fini do\u011frulay\u0131n.<\/li>\n<li>Bu \u00f6zel kesiciyi kullan\u0131rken, devrede bu cihaz\u0131n \u00fczerindeki t\u00fcm yukar\u0131 ak\u0131\u015f cihazlar\u0131n\u0131n devre d\u0131\u015f\u0131 b\u0131rak\u0131ld\u0131\u011f\u0131ndan emin olun. Devrede C tipi cihaz\u0131n alt\u0131nda kurulu D tipi cihaz durumunda, iki tipin tan\u0131ml\u0131 ar\u0131za ak\u0131m\u0131 alt\u0131ndaki farkl\u0131 performanslar\u0131 nedeniyle d\u00fczg\u00fcn \u00e7al\u0131\u015fmayabilirler.<\/li>\n<li>Kurulu yerde kar\u015f\u0131la\u015f\u0131lmas\u0131 beklenen k\u0131sa devre ak\u0131m\u0131ndan daha y\u00fcksek bir kesme kapasitesinin olup olmad\u0131\u011f\u0131n\u0131 kontrol edin. Bu ak\u0131m de\u011ferini varsaymak yerine hesaplaman\u0131z \u00f6nerilir.<\/li>\n<li>Cihaz\u0131n testlerden ge\u00e7ti\u011finden ve kullan\u0131m i\u00e7in sertifikaland\u0131r\u0131ld\u0131\u011f\u0131ndan emin olun. UL 489 sertifikas\u0131 ile ilgili makalemizde a\u015fa\u011f\u0131daki konular ele al\u0131nmaktad\u0131r.<\/li>\n<\/ul>\n<p>Do\u011fru e\u011fri bilindi\u011finde, kalan se\u00e7im basittir. Tek bir sertifikal\u0131 \u00fcr\u00fcn ailesi i\u00e7inde B, C ve D e\u011frileri sunan bir \u00fcretici, hem spesifikasyonu hem de yedek par\u00e7a bulundurmay\u0131 kolayla\u015ft\u0131r\u0131r; <a href=\"https:\/\/huyuglobal.com\/tr\/product\/hum18-63n-mcb-1p-to-4p-63a-type-b-c-d\/\">HUM18-63N serisi<\/a>, 1P'den 4P'ye kadar 63 A'ye kadar B, C ve D e\u011frilerinde mevcut olup, bu yap\u0131n\u0131n bir \u00f6rne\u011fidir ve bir al\u0131c\u0131n\u0131n beklemesi gereken spesifikasyon detaylar\u0131n\u0131 g\u00f6stermektedir.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4277\" src=\"https:\/\/huyuglobal.com\/wp-content\/uploads\/2026\/09\/How-to-Select-a-Curve.webp\" alt=\"E\u011fri Nas\u0131l Se\u00e7ilir\" width=\"1448\" height=\"1086\" \/><\/p>\n<h2>Ortam S\u0131cakl\u0131\u011f\u0131 ve Derecelendirme<\/h2>\n<p>IEC 60898-1 standard\u0131na uygun cihazlarda, e\u011fri genellikle 30\u00b0C referans s\u0131cakl\u0131\u011f\u0131nda davran\u0131\u015f\u0131 tan\u0131mlar. Bunun nedeni, a\u015f\u0131r\u0131 y\u00fck eleman\u0131n\u0131n termal esasl\u0131 \u00e7al\u0131\u015fmas\u0131d\u0131r ve bu nedenle performans\u0131 \u00e7evresindeki s\u0131cakl\u0131k de\u011fi\u015fimleriyle de\u011fi\u015fir; bu, tesisatlarda beklenmeyen a\u00e7malar\u0131n yayg\u0131n bir nedenidir.<\/p>\n<p>S\u0131cak bir ortam durumunda, \u00f6rne\u011fin s\u0131cak bir g\u00fcnde bir pano, g\u00fcne\u015fe maruz kalan bir kutudaki da\u011f\u0131t\u0131m panosu veya \u0131s\u0131 \u00fcreten ekipman\u0131n yan\u0131ndaki bir kesici i\u00e7in, bimetalik \u015ferit daha y\u00fcksek bir ba\u015flang\u0131\u00e7 noktas\u0131na sahiptir ve a\u00e7ma noktas\u0131na daha d\u00fc\u015f\u00fck ak\u0131mda ula\u015f\u0131r; bu \u00f6nemlidir \u00e7\u00fcnk\u00fc \u00fcreticilerin tablolar\u0131nda 60\u00b0C'de \u00e7al\u0131\u015fan 20A cihazlar\u0131n \u00e7ok daha d\u00fc\u015f\u00fck ak\u0131m ta\u015f\u0131yaca\u011f\u0131 g\u00f6sterilir ve tam tersi, cihaz daha d\u00fc\u015f\u00fck s\u0131cakl\u0131kta \u00e7al\u0131\u015ft\u0131\u011f\u0131nda daha y\u00fcksek ak\u0131mda a\u00e7ma yapar.<\/p>\n<p>\u00dc\u00e7 \u00f6nemli nokta vard\u0131r. Birincisi, cihazlar\u0131 s\u0131cak noktalara yerle\u015ftirirken, nominal de\u011fer yerine derecelendirme tablolar\u0131na g\u00f6re kesici se\u00e7mek gerekebilir; bu, daha y\u00fcksek bir derecelendirme se\u00e7ilmesi gerekti\u011fini g\u00f6sterebilir. \u0130kincisi, panolarda birbirine yak\u0131n yerle\u015ftirilen cihazlar birbirini etkiler ve \u00fcreticinin fakt\u00f6r\u00fc ortam d\u00fczeltmesine eklenmelidir. \u00dc\u00e7\u00fcnc\u00fcs\u00fc, devre sadece s\u0131cak \u00f6\u011fleden sonralar\u0131 a\u00e7\u0131yorsa, bu genellikle ar\u0131za de\u011fil, derecelendirme sorunudur. Ger\u00e7ekten \u015f\u00fcpheli bir cihaz varsa, rehberimizdeki <a href=\"https:\/\/huyuglobal.com\/tr\/blog\/how-to-tell-if-a-breaker-is-bad\/\">ar\u0131zal\u0131 kesiciyi tan\u0131mlama<\/a> ba\u015flang\u0131\u00e7 noktas\u0131d\u0131r.<\/p>\n<h2>Yayg\u0131n Hatalar<\/h2>\n<ul>\n<li>E\u011friyi de\u011fi\u015ftirmek yerine ak\u0131m kapasitesini art\u0131rmak bu alandaki en ciddi hatad\u0131r. 20 A elektrik kablosu ile kablolanm\u0131\u015f bir devrede 32 A devre kesici takmak, kablolar\u0131n \u0131s\u0131nmas\u0131na ve izolasyonun bozulmas\u0131na neden olabilir; devre kesici \u00e7al\u0131\u015fmadan \u00f6nce bile. Temelde, devre kesici y\u00fckten \u00e7ok kabloyu korur.<\/li>\n<li>Daha az spesifik durumlarda tip D devre kesicilerin kullan\u0131lmas\u0131. Tip D, ani ak\u0131mlara dayanabilir ancak orta d\u00fczeydeki ar\u0131za ak\u0131mlar\u0131na daha uzun s\u00fcre izin verir; bu, hassas devrelerde fark edilmeyebilir. Tip D devre kesiciler sadece y\u00fcksek ani ak\u0131m durumlar\u0131 i\u00e7in kullan\u0131lmal\u0131d\u0131r.<\/li>\n<li>Ortam d\u00fczeltme fakt\u00f6r\u00fcn\u00fcn g\u00f6z ard\u0131 edilmesi. Bazen g\u00f6r\u00fcn\u00fc\u015fte do\u011fru bir cihaz, y\u00fcksek s\u0131cakl\u0131klar nedeniyle yanl\u0131\u015f olabilir.<\/li>\n<li>Farkl\u0131 \u00fcreticiler aras\u0131nda B, C ve D'yi kar\u0131\u015ft\u0131rmak. Bantlar i\u00e7in standartlar vard\u0131r, ancak bu, toleranslar\u0131n ve e\u011frilerin \u015feklinin ayn\u0131 kalaca\u011f\u0131 anlam\u0131na gelmez; bu nedenle yakla\u015f\u0131k de\u011ferleri kullanmak yerine belirli bir \u00fcretici taraf\u0131ndan \u00fcretilen e\u011frilerin kontrol edilmesi ak\u0131ll\u0131ca olur.<\/li>\n<li>AC dereceli bir cihaz\u0131 DC ak\u0131mda kullanmak. Do\u011fru ak\u0131m \u00e7ok daha karma\u015f\u0131k i\u015flemler gerektirir.<\/li>\n<li>Koordinasyonu ihmal etmek. Cihazlar do\u011fru se\u00e7ilmi\u015f olsa bile koordinasyon hatas\u0131 nedeniyle yanl\u0131\u015f a\u00e7ma yapabilirler.<\/li>\n<li>Kabloyu se\u00e7meden \u00f6nce bir e\u011fri se\u00e7mek. Kablo, devre kesicinin derecesini belirler ve y\u00fck e\u011friyi belirler; aksi takdirde, kurulum kurallara uygun g\u00f6r\u00fcnse bile tamamen g\u00fcvenli olmayabilir.<\/li>\n<\/ul>\n<h2>Standartlar ve Sertifikasyon<\/h2>\n<p>Hangi standard\u0131n ge\u00e7erli oldu\u011fu, hangi e\u011frilerin var oldu\u011funu, cihaz\u0131n neye g\u00f6re test edildi\u011fini ve i\u015faretlerin ne anlama geldi\u011fini belirler.<\/p>\n<table>\n<tbody>\n<tr>\n<th>Standart<\/th>\n<th>Uygulan\u0131r<\/th>\n<th>E\u011fri \u00f6zellikleri<\/th>\n<\/tr>\n<tr>\n<td>IEC\/EN 60898-1<\/td>\n<td>Ev ve benzeri tesisatlar i\u00e7in minyat\u00fcr devre kesiciler<\/td>\n<td>Tan\u0131ml\u0131 manyetik bantlara sahip sabit B, C ve D e\u011frileri; ev ve hafif ticari<\/td>\n<\/tr>\n<tr>\n<td>IEC\/EN 60947-2<\/td>\n<td>End\u00fcstriyel tesisatlar i\u00e7in devre kesiciler, MCCB'ler dahil<\/td>\n<td>Genellikle ayarlanabilir termal ve manyetik ayarlar; sistem genelinde koordinasyon gereken yerlerde kullan\u0131l\u0131r<\/td>\n<\/tr>\n<tr>\n<td>UL 489<\/td>\n<td>Kuzey Amerika pazar\u0131 i\u00e7in kal\u0131pl\u0131 devre kesiciler<\/td>\n<td>Farkl\u0131 a\u00e7ma bant\u0131 konvansiyonlar\u0131 kullan\u0131r; cihazlar IEC e\u011fri tipleri ile de\u011fi\u015ftirilemez<\/td>\n<\/tr>\n<tr>\n<td>UL 1077<\/td>\n<td>Ek koruyucular<\/td>\n<td>Dal devresi koruma cihazlar\u0131 de\u011fildir; UL 489 kesici yerine ge\u00e7memelidir<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Kuzey Amerika ayr\u0131m\u0131, birden fazla pazarda faaliyet g\u00f6steren al\u0131c\u0131lar i\u00e7in zorluk yarat\u0131r. IEC 60898-1\u201ce g\u00f6re \u201dTip C\u201d olarak etiketlenen bir cihaz ile UL 489'a g\u00f6re C-ile ba\u015flayan katalog numaras\u0131na sahip bir cihaz ayn\u0131 \u015fey de\u011fildir ve farkl\u0131 a\u00e7ma karakteristikleri ile \u00e7al\u0131\u015f\u0131r. Bu, \u00f6zellikle tek bir projenin standartlar\u0131 a\u015ft\u0131\u011f\u0131 durumlarda \u00f6nemlidir; \u00f6rne\u011fin, bir Avrupa panosunun Kuzey Amerika sahas\u0131nda kurulmas\u0131 gerekti\u011finde: sertifikasyon, kurulum sahas\u0131ndaki yasalara g\u00f6re belirlenir, bu da cihaz\u0131n buna g\u00f6re sertifikaland\u0131r\u0131lmas\u0131 gerekti\u011fi anlam\u0131na gelir. Ayn\u0131 mant\u0131k, bu cihazlar\u0131n baz\u0131lar\u0131 taraf\u0131ndan sa\u011flanan yard\u0131mc\u0131 fonksiyonlar i\u00e7in de ge\u00e7erlidir: sertifikasyon panoya uygun olmal\u0131, katalog ad\u0131na de\u011fil.<\/p>\n<h2>SSS<\/h2>\n<h3>E\u011fri kesici olmak ne anlama gelir?<\/h3>\n<p>Bu, devre kesicinin a\u00e7ma davran\u0131\u015f\u0131n\u0131n sabit bir a\u00e7ma de\u011ferine de\u011fil, yay\u0131mlanm\u0131\u015f bir zaman-ak\u0131m e\u011frisine dayand\u0131\u011f\u0131 anlam\u0131na gelir. B\u00f6yle bir e\u011fri, cihaz\u0131n her bir nominal ak\u0131m kat\u0131 i\u00e7in \u00e7al\u0131\u015fma s\u00fcresi hakk\u0131nda bilgi verir ve iki t\u00fcr a\u00e7ma hakk\u0131nda temel bilgiyi sunar: a\u015f\u0131r\u0131 y\u00fcklemeye kar\u015f\u0131 koruyan yava\u015f termal a\u00e7ma ve k\u0131sa devrelere kar\u015f\u0131 koruyan anl\u0131k manyetik a\u00e7ma. Cihaz \u00fczerindeki devre tipi harfi \u2013 IEC 60898-1'e g\u00f6re B, C veya D \u2013 cihaz\u0131n ait oldu\u011fu kat say\u0131y\u0131 belirtir: s\u0131ras\u0131yla nominal ak\u0131m\u0131n 3-5, 5-10 ve 10-20 kat\u0131. E\u011frinin \u00e7al\u0131\u015fma prensibi, cihaz\u0131n ta\u015f\u0131yabilece\u011fi maksimum ak\u0131mdan ziyade a\u00e7ma s\u00fcresini belirlemektir.<\/p>\n<h3>Devre kesicilerin \u00fc\u00e7 t\u00fcr\u00fc nedir?<\/h3>\n<p>IEC 60898-1 ailesindeki standart t\u00fcrler \u00fc\u00e7t\u00fcr. Birinci t\u00fcr, nominal ak\u0131m\u0131n 3 ila 5 kat\u0131 manyetik a\u00e7ma aral\u0131\u011f\u0131na sahip tip B'dir; tip C, nominal ak\u0131m\u0131n 5 ila 10 kat\u0131 manyetik a\u00e7maya sahiptir; ve tip D, nominal ak\u0131m\u0131n 10 ila 20 kat\u0131d\u0131r. Tip B, ayd\u0131nlatma, diren\u00e7li \u0131s\u0131tma, priz \u00e7\u0131k\u0131\u015flar\u0131 ve kontrol cihazlar\u0131 gibi minimal veya \u00f6nemsiz giri\u015f ak\u0131m\u0131 olan y\u00fckler i\u00e7in uygundur. Tip C, kar\u0131\u015f\u0131k y\u00fckler ve normal motorlar i\u00e7in tercih edilen t\u00fcrd\u00fcr ve bu nedenle ticari ve end\u00fcstriyel da\u011f\u0131t\u0131mda en s\u0131k kullan\u0131lan spesifikasyondur. Tip D, b\u00fcy\u00fck giri\u015f ak\u0131mlar\u0131na sahip ekipmanlar i\u00e7in kullan\u0131l\u0131r; \u00f6rne\u011fin b\u00fcy\u00fck transformat\u00f6rler, kaynak makineleri, jenerat\u00f6rler, r\u00f6ntgen cihazlar\u0131 ve b\u00fcy\u00fck motorlar. Bu \u00fc\u00e7 t\u00fcr\u00fcn d\u0131\u015f\u0131nda, belirli uygulamalar i\u00e7in tasarlanm\u0131\u015f A, Z ve K t\u00fcrleri mevcuttur ve modern kal\u0131planm\u0131\u015f devre kesiciler genellikle sabit ayarlar\u0131n aksine ayarlanabilir ayarlarla gelir.<\/p>\n<h3>AC e\u011frili devre kesici ne anlama gelir?<\/h3>\n<p>\u201cAC e\u011frisi\u201d terimi IEC 60898-1 standard\u0131nda \u00f6zel olarak bulunmamaktad\u0131r. Ger\u00e7ekte, \u201cAC e\u011frisi\u201d iki anlamdan birine at\u0131fta bulunabilir. \u00d6rne\u011fin, DC hizmetine k\u0131yasla ark s\u00f6nd\u00fcrmenin \u00f6nemli \u00f6l\u00e7\u00fcde daha zor olmas\u0131 nedeniyle AC hizmeti i\u00e7in derecelendirilmi\u015f bir cihaz\u0131 ifade edebilir. DC i\u015flemleri i\u00e7in \u00f6zel olarak derecelendirilmi\u015f cihazlar, ark kanallar\u0131 ve kontaklar gibi \u00f6zel olarak geli\u015ftirilmi\u015f bile\u015fenlere sahiptir. \u201cAC e\u011frisi\u201d ayr\u0131ca yanl\u0131\u015f kullan\u0131m veya yanl\u0131\u015f anlama sonucu tip C anlam\u0131na da gelebilir. Bu terimi kullan\u0131rken dikkatli olmak \u00f6nemlidir \u00e7\u00fcnk\u00fc herhangi bir sipari\u015f \u201cAC e\u011frisi\u201dnin ama\u00e7lanan anlam\u0131n\u0131 belirtmelidir. Fotovoltaik g\u00fcne\u015f h\u00fccreleri veya batarya depolama gibi DC modunda \u00e7al\u0131\u015fma gerektiren uygulamalar i\u00e7in, yaln\u0131zca DC i\u015flemleri i\u00e7in derecelendirilmi\u015f cihazlara ve \u00fcreticilerin sa\u011flad\u0131\u011f\u0131 DC e\u011frilerine kesinlikle g\u00fcvenmek kritik \u00f6neme sahiptir.<\/p>\n<h3>B e\u011frili ve C e\u011frili devre kesiciler aras\u0131ndaki fark nedir?<\/h3>\n<p>Fark, manyetik a\u00e7ma e\u011frisine dayan\u0131r. Tip B devre kesici, nominal ak\u0131m\u0131n\u0131n 3-5 kat\u0131nda a\u00e7arken, Tip C nominal ak\u0131m\u0131n\u0131n 5-10 kat\u0131nda a\u00e7ar. Termal a\u015f\u0131r\u0131 y\u00fck mekanizmas\u0131, s\u00fcrekli ak\u0131m kapasitesi ve boyut a\u00e7\u0131s\u0131ndan ise pratikte ayn\u0131d\u0131rlar. Uygulamada, Tip B daha hassast\u0131r; bu nedenle d\u00fc\u015f\u00fck giri\u015f ak\u0131ml\u0131 devrelerde ortaya \u00e7\u0131kan ar\u0131za durumlar\u0131n\u0131 tespit etmekte iyidir; ancak motor \u00e7al\u0131\u015ft\u0131rma durumunda da a\u00e7abilir. Tip C, motorun \u00fcretti\u011fi be\u015f ila sekiz kat giri\u015f ak\u0131m\u0131na dayanabilir ve genel kullan\u0131m i\u00e7in yeterince hassast\u0131r. Bu nedenle, end\u00fcstriyel ve ticari tesislerde varsay\u0131lan devre kesici olma e\u011filimindedir. Teoride, bir devre kesicinin di\u011ferinden daha iyi oldu\u011fu s\u00f6ylenemez; her biri kendi \u00e7al\u0131\u015fma ko\u015fullar\u0131nda uygundur.<\/p>\n<h3>Daha b\u00fcy\u00fck bir devre kesici takarak gereksiz a\u00e7may\u0131 d\u00fczeltebilir miyim?<\/h3>\n<p>Hay\u0131r, bu g\u00f6rev yapmak \u00e7ok tehlikelidir. Bir kesicinin amperaj derecesi, korudu\u011fu kablolar\u0131n ta\u015f\u0131ma kapasitesine dayan\u0131r (genellikle 15 A devre 14 AWG kablolara ba\u011flan\u0131rken, 20 A devre normalde 12 AWG kablolarla kabloludur). Bu, 20 A kabloya 32 A kesici ba\u011flaman\u0131n, a\u015f\u0131r\u0131 \u0131s\u0131nmaya kar\u015f\u0131 korumas\u0131 olmayan ve yang\u0131na neden olabilecek a\u015f\u0131r\u0131 \u0131s\u0131nan bir kabloyla sonu\u00e7lanabilece\u011fi anlam\u0131na gelir. Motor devresinde istenmeyen a\u00e7ma problemi oldu\u011funda, bunu bir derecelendirme sorunu yerine bir e\u011fri sorunu olarak de\u011ferlendirmek ve sorunu, tip B'den tip C'ye veya tip C'den D'ye (e\u011fer giri\u015f ak\u0131m\u0131 bunu hakl\u0131 \u00e7\u0131kar\u0131yorsa) ge\u00e7erek \u00e7\u00f6zmek, sonucu spek\u00fclasyon yerine ger\u00e7ek giri\u015f ak\u0131m\u0131 de\u011ferinde do\u011frulamak gerekir.<\/p>\n<h2>Referanslar<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.iec.ch\/\" rel=\"nofollow noopener\" target=\"_blank\">Uluslararas\u0131 Elektroteknik Komisyonu \u2014 IEC 60898-1 Ev ve Benzeri Tesisatlar i\u00e7in Devre Kesiciler<\/a><\/li>\n<li><a href=\"https:\/\/www.iec.ch\/\" rel=\"nofollow noopener\" target=\"_blank\">Uluslararas\u0131 Elektroteknik Komisyonu \u2014 IEC 60947-2 End\u00fcstriyel Tesisatlar i\u00e7in Devre Kesiciler<\/a><\/li>\n<li><a href=\"https:\/\/www.ul.com\/\" rel=\"nofollow noopener\" target=\"_blank\">UL Solutions \u2014 UL 489 Kal\u0131planm\u0131\u015f Kasa Devre Kesiciler ve UL 1077 Ek Koruyucular<\/a><\/li>\n<li><a href=\"https:\/\/www.bsigroup.com\/\" rel=\"nofollow noopener\" target=\"_blank\">BSI \u2014 BS EN 60898-1 MCB A\u00e7ma Karakteristikleri i\u00e7in Gereksinimler<\/a><\/li>\n<li><a href=\"https:\/\/www.nfpa.org\/\" rel=\"nofollow noopener\" target=\"_blank\">NFPA \u2014 Ulusal Elektrik Kodu, Madde 240 A\u015f\u0131r\u0131 Ak\u0131m Korumas\u0131<\/a><\/li>\n<\/ul>\n<h2>Sonu\u00e7<\/h2>\n<p>Bir e\u011fri kesici, davran\u0131\u015f\u0131 bir e\u011fri ile tan\u0131mlanan belirli bir kesici t\u00fcr\u00fcd\u00fcr; farkl\u0131 e\u011frilerle de\u011fi\u015fen tek \u015fey manyetik cihaz\u0131n \u00e7al\u0131\u015faca\u011f\u0131 ak\u0131m de\u011feridir. Tip B, nominal ak\u0131m\u0131n \u00fc\u00e7 ila be\u015f kat\u0131nda \u00e7al\u0131\u015f\u0131r ve ba\u015flatmas\u0131 yak\u0131n olan y\u00fckler i\u00e7in uygundur; Tip C, be\u015f ila 10 kat\u0131nda \u00e7al\u0131\u015f\u0131r ve tipik tesisatlarda hakim olan motor ve kar\u0131\u015f\u0131k y\u00fckler i\u00e7in uygundur; Tip D, 10-20 kat\u0131nda \u00e7al\u0131\u015f\u0131r ve transformat\u00f6rler, kaynak makineleri ve s\u00fcrekli a\u00e7ma yapacak kadar y\u00fcksek darbe \u00fcreten b\u00fcy\u00fck ekipmanlar i\u00e7in vard\u0131r. T\u00fcm cihazlar\u0131n termal a\u015f\u0131r\u0131 y\u00fck tepkisi ayn\u0131d\u0131r; bu, e\u011frinin giri\u015f ayr\u0131m\u0131na ili\u015fkin oldu\u011funu ve koruma kapasitesiyle ilgili olmad\u0131\u011f\u0131n\u0131 a\u00e7\u0131k\u00e7a g\u00f6steren noktad\u0131r. \u0130stenmeyen a\u00e7may\u0131 \u00f6nlemek i\u00e7in, sadece kablo derecesini, y\u00fck\u00fcn giri\u015f e\u011frisine dayal\u0131 e\u011friyi tan\u0131mlay\u0131n, se\u00e7ilen cihaz\u0131n en d\u00fc\u015f\u00fck ar\u0131za ak\u0131m\u0131 durumunda k\u0131sa s\u00fcrede tepki verdi\u011fini kontrol edin, derecelendirme fakt\u00f6rlerini kullan\u0131n ve yukar\u0131 ak\u0131\u015f cihazlar\u0131yla koordinasyonu kontrol edin.<\/p>","protected":false},"excerpt":{"rendered":"<p>A curve breaker may not be a new kind of breaker but refers to a breaker whose trip time is determined by a curve that has been preset so that it allows the circuit to trip every time a motor is switched on or stay closed when a wire is burning. It is easy to [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4278,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_gspb_post_css":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-4275","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blogs"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/huyuglobal.com\/tr\/wp-json\/wp\/v2\/posts\/4275","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/huyuglobal.com\/tr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/huyuglobal.com\/tr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/huyuglobal.com\/tr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/huyuglobal.com\/tr\/wp-json\/wp\/v2\/comments?post=4275"}],"version-history":[{"count":2,"href":"https:\/\/huyuglobal.com\/tr\/wp-json\/wp\/v2\/posts\/4275\/revisions"}],"predecessor-version":[{"id":4280,"href":"https:\/\/huyuglobal.com\/tr\/wp-json\/wp\/v2\/posts\/4275\/revisions\/4280"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/huyuglobal.com\/tr\/wp-json\/wp\/v2\/media\/4278"}],"wp:attachment":[{"href":"https:\/\/huyuglobal.com\/tr\/wp-json\/wp\/v2\/media?parent=4275"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/huyuglobal.com\/tr\/wp-json\/wp\/v2\/categories?post=4275"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/huyuglobal.com\/tr\/wp-json\/wp\/v2\/tags?post=4275"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}