{"id":19745,"date":"2025-11-12T15:34:23","date_gmt":"2025-11-12T07:34:23","guid":{"rendered":"https:\/\/viox.com\/?p=19745"},"modified":"2025-11-12T15:34:25","modified_gmt":"2025-11-12T07:34:25","slug":"nema-class-20-vs-iec-class-10-overload-relay-guide","status":"publish","type":"post","link":"https:\/\/test.viox.com\/tr\/nema-class-20-vs-iec-class-10-overload-relay-guide\/","title":{"rendered":"NEMA S\u0131n\u0131f\u0131 20 - IEC S\u0131n\u0131f\u0131 10 A\u015f\u0131r\u0131 Y\u00fck R\u00f6lesi: $50.000 Motor Cinayet Gizemi"},"content":{"rendered":"
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\"5k<\/p>\n

Alt\u0131 ay sonra, motorunuz \u00e7\u0131\u011fl\u0131k atarak durur. Ana \u00fcretim hatt\u0131n\u0131z\u0131 s\u00fcren 200 HP'lik \u00fcnite yanm\u0131\u015ft\u0131r - sarg\u0131lar kararm\u0131\u015f, yal\u0131t\u0131m ufalanm\u0131\u015f, stator g\u00f6vdesi hala end\u00fcstriyel bir krematoryum gibi \u0131s\u0131 yaymaktad\u0131r. S\u0131n\u0131f 20 a\u015f\u0131r\u0131 y\u00fck r\u00f6leniz cinayetin ortaya \u00e7\u0131k\u0131\u015f\u0131n\u0131 izledi. Hi\u00e7bir \u015fey yapmad\u0131.<\/p>\n

\u00c7\u00fcnk\u00fc alt\u0131 ay \u00f6nce, motorunuzu kurtaracak olan yerine size en \u00e7ok zaman\u0131 veren r\u00f6le s\u0131n\u0131f\u0131n\u0131 se\u00e7tiniz.<\/p>\n

Bir $200 bile\u015fen karar\u0131 nas\u0131l $50.000+'dan fazla bir felakete d\u00f6n\u00fc\u015f\u00fcr? Cevap, \u00e7o\u011fu m\u00fchendisin neden fark\u0131nda olmadan ar\u0131zalar\u0131 \u00f6nlemek yerine ar\u0131za ko\u015fullar\u0131 yaratan motor korumas\u0131 belirtti\u011fini ortaya koyuyor.<\/p>\n

Neden \u201cMuhafazakar\u201d S\u0131n\u0131f 20 Se\u00e7iminiz Motorlar\u0131 S\u0131n\u0131f 10'dan Daha H\u0131zl\u0131 Yok Ediyor?<\/h2>\n

\"The<\/p>\n

So\u011fuk Ba\u015flang\u0131\u00e7 Katili, \u00e7o\u011fu m\u00fchendisin hi\u00e7 dikkate almad\u0131\u011f\u0131 termal fizi\u011fi kullan\u0131r. Bir hafta sonu kapan\u0131\u015f\u0131ndan sonra, motor sarg\u0131lar\u0131n\u0131z so\u011fuktur - bu da ayn\u0131 s\u0131cakl\u0131\u011fa ula\u015fmadan \u00f6nce normal s\u0131cak \u00e7al\u0131\u015fmaya g\u00f6re -20 daha fazla ak\u0131m emebilecekleri anlam\u0131na gelir. Devreye alma s\u0131ras\u0131nda \u00f6l\u00e7t\u00fc\u011f\u00fcn\u00fcz 8 saniyelik ba\u015flang\u0131\u00e7 s\u00fcresi mi? Pazartesi sabah\u0131 ger\u00e7e\u011fi i\u00e7in 1-3 saniye ekleyin. \u0130\u015fte silah\u0131n \u00e7al\u0131\u015ft\u0131\u011f\u0131 yer: S\u0131n\u0131f 20, motorunuza termal y\u0131k\u0131ma ula\u015fmas\u0131 i\u00e7in 20 saniyeye kadar s\u00fcre tan\u0131r. S\u0131n\u0131f 10, 4-10 saniyede a\u00e7\u0131l\u0131r. M\u00fchendisler kontakt\u00f6rlerde a\u015fa\u011f\u0131 yuvarlamay\u0131 ve pizza malzemelerinde yukar\u0131 yuvarlamay\u0131 severler. Biri di\u011ferinden daha iyi \u00e7al\u0131\u015f\u0131r.<\/p>\n

Motor yal\u0131t\u0131m\u0131 ac\u0131mas\u0131z matemati\u011fi takip eder: s\u0131n\u0131rlar\u0131n \u00fczerindeki her 10\u00b0C, yal\u0131t\u0131m \u00f6mr\u00fcn\u00fc yar\u0131ya indirir. 600 ak\u0131m\u0131nda, bu \u201cmuhafazakar\u201d 20 saniyelik pencere \u00f6l\u00fcm cezas\u0131 haline gelir. I2t ili\u015fkisi m\u00fchendislik derecenizi umursamaz. Hasar \u221d I2 \u00d7 t. Nokta. 600 ak\u0131mda (normal \u0131s\u0131tman\u0131n 36 kat\u0131), \u00e7o\u011fu end\u00fcstriyel motorda termal hasar meydana gelmeden \u00f6nce yakla\u015f\u0131k 12 saniyeniz vard\u0131r - S\u0131n\u0131f 20'nin a\u00e7ma penceresi i\u00e7inde, ancak S\u0131n\u0131f 10'un daha h\u0131zl\u0131 tepkisiyle g\u00fcvenli bir \u015fekilde korunur.2<\/sup>Ar\u0131zal\u0131 motoru a\u00e7t\u0131\u011f\u0131n\u0131zda, kan\u0131t hikayeyi anlat\u0131r: end\u00fcstriyel travma ge\u00e7irmi\u015f gibi g\u00f6r\u00fcnen sarg\u0131lar, yal\u0131t\u0131m tehlikeye girmi\u015f, bak\u0131r iletkenler s\u0131n\u0131rlar\u0131n \u00f6tesinde zorlanm\u0131\u015f. S\u0131n\u0131f 20 r\u00f6lesi, s\u0131cakl\u0131\u011f\u0131n g\u00fcvenli s\u0131n\u0131rlar\u0131 a\u015ft\u0131\u011f\u0131n\u0131 12+ saniye boyunca izleyerek 'daha \u00e7ok zaman var' diye d\u00fc\u015f\u00fcnd\u00fc. Motorunuzun termal b\u00fct\u00e7esi \u00f6nce t\u00fckendi.2<\/sup> Termal B\u00fct\u00e7e: Motorlar\u0131n Neden Sand\u0131\u011f\u0131n\u0131zdan Daha Az Zaman\u0131 Var?.<\/p>\n

Lise fizik \u00f6\u011fretmeniniz Termal B\u00fct\u00e7e'den hi\u00e7 bahsetmedi, ancak bu motor korumas\u0131ndaki en \u00f6nemli denklemdir. Bunu bir \u00e7ek hesab\u0131 gibi d\u00fc\u015f\u00fcn\u00fcn: motorun s\u0131cakl\u0131k s\u0131n\u0131r\u0131n\u0131n \u00fczerindeki her derece, sonlu bir hesaptan para \u00e7ekmeyi temsil eder. S\u0131n\u0131f 10 korumas\u0131 bakiyeyi izler ve hesab\u0131 a\u015fmadan \u00f6nce para \u00e7ekmeyi durdurur. S\u0131n\u0131f 20, 20 saniyeye kadar s\u0131n\u0131rs\u0131z harcama sa\u011flar, ard\u0131ndan hesap s\u0131f\u0131ra ula\u015ft\u0131\u011f\u0131nda \u015fa\u015f\u0131r\u0131r.<\/p>\n

Ak\u0131m-zaman ili\u015fkisi do\u011frusal sezgiye meydan okur: 200 ak\u0131mda, termal hasar meydana gelmeden \u00f6nce dakikalar\u0131n\u0131z vard\u0131r. 400 ak\u0131mda, belki 30 saniye. 600 ba\u015flang\u0131\u00e7 ak\u0131m\u0131nda, yakla\u015f\u0131k 12 saniye kal\u0131r. I2t koruma modeli, m\u00fchendislik sezgisinden ba\u011f\u0131ms\u0131z olarak ge\u00e7erlidir: \u222b(I2 \u2013 1)dt termal s\u0131n\u0131ra ula\u015ft\u0131\u011f\u0131nda, yal\u0131t\u0131m ar\u0131zas\u0131 ba\u015flar. \u00c7o\u011fu m\u00fchendis \"20 saniye\" g\u00f6r\u00fcr ve \"muhafazakar\" diye d\u00fc\u015f\u00fcn\u00fcr. Motorlar 600 ak\u0131m\u0131 g\u00f6r\u00fcr ve acil termal protokolleri ba\u015flat\u0131r.<\/h2>\n

10\u00b0C Vergisi, bakmad\u0131\u011f\u0131n\u0131zda termal b\u00fct\u00e7enizi \u00e7alar. 40\u00b0C ortam s\u0131cakl\u0131\u011f\u0131n\u0131n \u00fczerindeki her 10\u00b0C, hem motor kapasitesini hem de r\u00f6le hassasiyetini azalt\u0131r. \u00d6\u011fleden sonra ortas\u0131nda 60\u00b0C'ye ula\u015fan kontrol paneli mi? Elinizi geri \u00e7ekmenizi sa\u011flayacak kadar s\u0131cak. 25A kontakt\u00f6r\u00fcn\u00fczden 7 amper kapasite \u00e7alacak kadar s\u0131cak. Koruma bo\u015flu\u011fu, termal stresin zirveye ula\u015ft\u0131\u011f\u0131 anda tam olarak geni\u015fler - 10\u00b0C Vergisi motor sarg\u0131lar\u0131nda toplan\u0131r.<\/p>\n

Motor Ar\u0131zalar\u0131n\u0131 \u00d6nleyen A\u015f\u0131r\u0131 Y\u00fck R\u00f6le S\u0131n\u0131f\u0131n\u0131 Se\u00e7mek \u0130\u00e7in 5 Ad\u0131ml\u0131 Y\u00f6ntem2<\/sup>Ad\u0131m 1: Motorunuzun Ger\u00e7ek Termal B\u00fct\u00e7esini Hesaplay\u0131n2<\/sup> Otantik termal limitlerle ba\u015flay\u0131n - isim plakas\u0131 iyimserli\u011fiyle de\u011fil. S\u0131n\u0131f F yal\u0131t\u0131ml\u0131 tipik NEMA Tasar\u0131m B motorlar\u0131 i\u00e7in, termal hasar yakla\u015f\u0131k 12-15 saniyede 600 kilitli rotor ak\u0131m\u0131 alt\u0131nda meydana gelir. Ancak \u00e7o\u011fu m\u00fchendisin ka\u00e7\u0131rd\u0131\u011f\u0131 ger\u00e7ek \u015fu ki: so\u011fuk sarg\u0131lar, s\u0131cakl\u0131k s\u0131n\u0131rlar\u0131na ula\u015fmadan \u00f6nce -20 daha fazla ak\u0131m emer. \u00d6l\u00e7t\u00fc\u011f\u00fcn\u00fcz 8 saniyelik ba\u015flang\u0131\u00e7 s\u00fcresi, Pazartesi sabah\u0131 yeniden ba\u015flatma s\u0131ras\u0131nda 9-11 saniye olur.<\/p>\n

Profesyonel \u0130pucu 1: So\u011fuk Ba\u015flang\u0131\u00e7 \u00c7arpan\u0131:.<\/p>\n

So\u011fuk motor sarg\u0131lar\u0131, \u00e7al\u0131\u015ft\u0131rma s\u0131ras\u0131nda s\u0131cak motorlardan -20 daha fazla ak\u0131m emer. Devreye alma s\u0131ras\u0131nda \u00f6l\u00e7t\u00fc\u011f\u00fcn\u00fcz 8 saniyelik ba\u015flang\u0131\u00e7 s\u00fcresi mi? Pazartesi sabah\u0131 ger\u00e7e\u011fi i\u00e7in 1-3 saniye ekleyin. Hesaplamalar termal hasara 10 saniye kald\u0131\u011f\u0131n\u0131 g\u00f6steriyorsa, S\u0131n\u0131f 20'nin 20 saniyelik penceresi muhafazakar de\u011fil - felakettir.<\/h2>\n

Ger\u00e7ek ko\u015fullar\u0131 hesaba kat\u0131n: y\u00fcksek ataletli y\u00fckler ba\u015flang\u0131\u00e7 s\u00fcresini uzat\u0131r, d\u00fc\u015f\u00fck voltaj ba\u015flang\u0131\u00e7 s\u00fcresini uzat\u0131r, so\u011fuk ortam s\u0131cakl\u0131\u011f\u0131 ba\u015flang\u0131\u00e7 s\u00fcresini uzat\u0131r. Ger\u00e7ek d\u00fcnya de\u011fi\u015fkenleri i\u00e7in g\u00fcvenlik marj\u0131 uygulay\u0131n. Motorunuzun g\u00fcvenli h\u0131zlanma i\u00e7in 10 saniyeye ihtiyac\u0131 varsa ve termal hasar 12 saniyede meydana geliyorsa, S\u0131n\u0131f 10'un 4-10 saniyelik penceresi koruma sa\u011flar. S\u0131n\u0131f 20'nin 6-20 saniyelik penceresi y\u0131k\u0131m riski ta\u015f\u0131r.<\/h3>\n

Ad\u0131m 2: A\u00e7ma S\u00fcrelerini Termal Hasar E\u011frilerine Kar\u015f\u0131 E\u015fleyin.<\/p>\n

Koordinasyon analizi basit kal\u0131r: motor termal hasar e\u011frilerini r\u00f6le a\u00e7ma karakteristikleriyle \u00f6rt\u00fc\u015ft\u00fcr\u00fcn. Tipik 200 HP motorlar (460V sistemler i\u00e7in 240-250A FLA) i\u00e7in 600 ak\u0131mda 12 saniyelik termal hasar s\u00fcresiyle, koruma gereksinimleri netle\u015fir. S\u0131n\u0131f 10, a\u00e7ma i\u00e7in 4-10 saniye sa\u011flar - s\u00fcrekli olarak termal hasardan \u00f6nce. S\u0131n\u0131f 20, 6-20 saniye sa\u011flar - bazen koruyucu, bazen y\u0131k\u0131c\u0131. \"Bazen\" bir koruma stratejisi de\u011fildir.<\/strong> Profesyonel \u0130pucu 2: 600 Kural\u0131:.<\/p>\n

Motorun kilitli rotor s\u00fcresi yetene\u011fini her zaman r\u00f6le s\u0131n\u0131f\u0131 limitlerine kar\u015f\u0131 marjla do\u011frulay\u0131n. Motorlar 600 ak\u0131mda 12 saniye dayan\u0131rsa, S\u0131n\u0131f 10 4-10 saniye sa\u011flar. S\u0131n\u0131f 20, 6-20 saniye sa\u011flar. Termal hasardan \u00f6nce a\u00e7an s\u0131n\u0131f\u0131 se\u00e7in - maksimum zaman\u0131 sa\u011flayan de\u011fil.<\/p>\n

Ancak iyi m\u00fchendisleri harika m\u00fchendislerden ay\u0131ran kar\u015f\u0131 sezgisel ger\u00e7ek \u015fudur: daha h\u0131zl\u0131 koruma genellikle daha fazla rahats\u0131z edici a\u00e7ma anlam\u0131na gelmez, daha az anlam\u0131na gelir. Koruma h\u0131zl\u0131 ve \u00f6ng\u00f6r\u00fclebilir bir \u015fekilde \u00e7al\u0131\u015ft\u0131\u011f\u0131nda, ayarlar\u0131 ger\u00e7ek \u00e7al\u0131\u015fma ko\u015fullar\u0131na daha yak\u0131n optimize edebilirsiniz. S\u0131n\u0131f 20'nin geni\u015f penceresi, motorlar\u0131 \u00f6ld\u00fcren ara s\u0131ra ge\u00e7 a\u00e7malar\u0131 \u00f6nlemek i\u00e7in muhafazakar ayarlar\u0131 zorlar. S\u0131n\u0131f 10'un tutarl\u0131, daha h\u0131zl\u0131 \u00e7al\u0131\u015fmas\u0131 hem koruma hem de operasyonel verimlilik i\u00e7in optimizasyon sa\u011flar.<\/h3>\n

Ad\u0131m 3: Gizli Koruma Gereksinimlerini Fakt\u00f6r Edin.<\/p>\n

Tek faz alg\u0131lama, NEMA ve IEC koruma felsefeleri aras\u0131ndaki en \u00f6nemli gizli fark\u0131 temsil eder. IEC 60947-4-1:2020, S\u0131n\u0131f 10 r\u00f6lelerinin 130 ak\u0131mda 10 dakika i\u00e7inde tek faz ko\u015fullar\u0131n\u0131 alg\u0131lamas\u0131n\u0131 ve yan\u0131t vermesini zorunlu k\u0131lar. NEMA ICS 2-223:2023, S\u0131n\u0131f 20 r\u00f6leleri i\u00e7in tek faz alg\u0131lama gerektirmez. Tek fazlaman\u0131n motorlar\u0131 3 dakikadan k\u0131sa s\u00fcrede yok etti\u011fi pompa, so\u011futucu ve fan uygulamalar\u0131nda, bu \"muhafazakar\" S\u0131n\u0131f 20 se\u00e7imi, S\u0131n\u0131f 10'un otomatik olarak yakalad\u0131\u011f\u0131 ar\u0131za modlar\u0131 yarat\u0131r.<\/strong> Profesyonel \u0130pucu 3: Tek Faz K\u00f6r Noktas\u0131:.<\/p>\n

NEMA S\u0131n\u0131f 20 r\u00f6leleri tek faz alg\u0131lama gerektirmez. IEC S\u0131n\u0131f 10 gerektirir. Pompa ve so\u011futucu uygulamalar\u0131nda, tek fazlama motorlar\u0131 3 dakikadan k\u0131sa s\u00fcrede yok edebilir. Bu \u2019muhafazakar\u2019 S\u0131n\u0131f 20 se\u00e7imi, S\u0131n\u0131f 10'un otomatik olarak yakalayaca\u011f\u0131 ar\u0131za modlar\u0131 yarat\u0131r.<\/p>\n

\u00c7evresel azaltma, en \u00e7ok ihtiya\u00e7 duyuldu\u011funda koruma yetene\u011fini azalt\u0131r. 10\u00b0C Vergisi hem motorlar hem de r\u00f6leler i\u00e7in ge\u00e7erlidir: 40\u00b0C ortam\u0131n \u00fczerindeki her 10\u00b0C, r\u00f6le hassasiyetini yakla\u015f\u0131k %2-6 azalt\u0131r (\u00fcreticiye g\u00f6re de\u011fi\u015fir). Yaz \u00f6\u011fleden sonralar\u0131 s\u0131ras\u0131nda 60\u00b0C'ye ula\u015fan kontrol panelleri mi? 25A S\u0131n\u0131f 20 r\u00f6leniz, tam y\u00fckte motorlar hala 24A talep ederken, 21-23A efektif kapasiteye daha yak\u0131n \u00e7al\u0131\u015f\u0131r. Koruma bo\u015flu\u011fu, termal stresin zirveye ula\u015ft\u0131\u011f\u0131 anda geni\u015fler.<\/h3>\n

Uygulaman\u0131zdaki ger\u00e7ek ar\u0131za modlar\u0131na kar\u015f\u0131 se\u00e7imleri kalite kontrol edin. Y\u00fcksek ataletli y\u00fcklerin daha yava\u015f de\u011fil, daha h\u0131zl\u0131 korumaya ihtiyac\u0131 vard\u0131r. S\u0131k \u00e7al\u0131\u015ft\u0131rma d\u00f6ng\u00fclerinin geni\u015f pencerelere de\u011fil, \u00f6ng\u00f6r\u00fclebilir a\u00e7ma s\u00fcrelerine ihtiyac\u0131 vard\u0131r. Kritik uygulamalar\u0131n elektronik IEC r\u00f6lelerinin sa\u011flad\u0131\u011f\u0131 geli\u015fmi\u015f \u00f6zelliklere ihtiyac\u0131 vard\u0131r: toprak ar\u0131zas\u0131 alg\u0131lama, faz dengesizli\u011fi korumas\u0131, \u00e7al\u0131\u015ft\u0131rma ge\u00e7mi\u015fini hesaba katan termal modelleme. Tabii ki Cuma g\u00fcn\u00fc saat 16:45\u201cte ar\u0131zaland\u0131 - 10\u00b0C Vergi \u00e7ekimleriyle ge\u00e7en bir haftan\u0131n ard\u0131ndan termal b\u00fct\u00e7e nihayet t\u00fckendi\u011finde.<\/p>\n

VIOX A\u015f\u0131r\u0131 Y\u00fck R\u00f6le \u00dcr\u00fcnleri<\/strong> Koruma H\u0131z\u0131n\u0131 Anlamak Motor Cinayetini \u00d6nler.<\/p>\n

So\u011fuk Ba\u015flang\u0131\u00e7 Katilini Anlamak motor cinayetini \u00f6nler. Termal B\u00fct\u00e7eyi E\u015flemek yal\u0131t\u0131m iflas\u0131n\u0131 \u00f6nler. Yava\u015fl\u0131\u011f\u0131n Yanl\u0131\u015f G\u00fcvenli\u011finden Ka\u00e7\u0131nmak feci ar\u0131zalar\u0131 \u00f6nler. Belirleyece\u011finiz bir sonraki a\u015f\u0131r\u0131 y\u00fck r\u00f6lesi ya motorunuzu koruyacak ya da kendini yok ederken yanl\u0131\u015f g\u00fcvenlik sa\u011flayacakt\u0131r. Fark r\u00f6lenin fiyat\u0131 de\u011fil - daha h\u0131zl\u0131 koruman\u0131n genellikle daha g\u00fcvenli \u00e7al\u0131\u015fma anlam\u0131na geldi\u011fini anlamakt\u0131r.<\/p>\n

S\u0131n\u0131f 10 - S\u0131n\u0131f 20 karar\u0131, bir a\u00e7may\u0131 ara\u015ft\u0131rmak i\u00e7in bir k\u0131sa mesaj m\u0131 yoksa \u00fcretimin durdu\u011fu 02:00'de bir acil durum \u00e7a\u011fr\u0131s\u0131 m\u0131 alaca\u011f\u0131n\u0131z\u0131 belirler. Termal hasar meydana gelmeden \u00f6nce a\u00e7an s\u0131n\u0131f\u0131 se\u00e7in, y\u0131k\u0131m\u0131n ortaya \u00e7\u0131k\u0131\u015f\u0131n\u0131 izlemek i\u00e7in size en \u00e7ok zaman\u0131 veren de\u011fil. Motorunuzun termal b\u00fct\u00e7esi s\u0131n\u0131rl\u0131d\u0131r. Ak\u0131ll\u0131ca harcay\u0131n, yoksa So\u011fuk Ba\u015flang\u0131\u00e7 Katili borcu faiziyle tahsil edecektir.<\/p>\n