{"id":1415,"date":"2026-09-22T23:31:04","date_gmt":"2026-09-22T23:31:04","guid":{"rendered":"https:\/\/ritoks.com\/?p=1415"},"modified":"2026-10-07T07:42:49","modified_gmt":"2026-10-07T07:42:49","slug":"dc-mcb-breaking-capacity-verification","status":"publish","type":"post","link":"https:\/\/ritoks.com\/cs\/dc-mcb-breaking-capacity-verification\/","title":{"rendered":"Odpojovac\u00ed schopnost jisti\u010d\u016f DC: Co si mus\u00ed kupuj\u00edc\u00ed ov\u011b\u0159it"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Jmenovit\u00e1 vyp\u00ednac\u00ed schopnost jisti\u010de pro stejnosm\u011brn\u00fd proud nen\u00ed samostatn\u00fdm \u00fadajem v kA. Je nutn\u00e9 ji vyhodnocovat ve spojen\u00ed s jmenovit\u00fdm stejnosm\u011brn\u00fdm nap\u011bt\u00edm, po\u010dtem p\u00f3l\u016f, povolen\u00fdm zapojen\u00edm, typem proudu a zku\u0161ebn\u00edmi podm\u00ednkami konkr\u00e9tn\u00edho jisti\u010de. Kupuj\u00edc\u00ed mus\u00ed rovn\u011b\u017e zn\u00e1t p\u0159edpokl\u00e1dan\u00fd zkratov\u00fd proud v m\u00edst\u011b instalace, aby mohli posoudit, zda je uveden\u00fd jmenovit\u00fd parametr dostate\u010dn\u00fd.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tato p\u0159\u00edru\u010dka vysv\u011btluje, jak\u00e9 podklady jsou pot\u0159ebn\u00e9 k porovn\u00e1n\u00ed ud\u00e1van\u00e9 vyp\u00ednac\u00ed schopnosti jisti\u010de DC s po\u017eadavky projektu. Nezahrnuje v\u00fdpo\u010det poruchov\u00e9ho proudu, schv\u00e1len\u00ed jisti\u010de, poskytnut\u00ed sch\u00e9matu zapojen\u00ed ani p\u0159evod jmenovit\u00fdch hodnot ABB na model RITOKS.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Rozhodov\u00e1n\u00ed o n\u00e1kupu v kostce<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Vstupn\u00ed \u00fadaje pro rozhodnut\u00ed<\/th><th>Kupuj\u00edc\u00ed mus\u00ed potvrdit<\/th><th>Po\u017eadovan\u00e9 doklady<\/th><\/tr><\/thead><tbody><tr><td>Po\u017eadavky na poruchy<\/td><td>P\u0159edpokl\u00e1dan\u00fd zkratov\u00fd proud v m\u00edst\u011b instalace<\/td><td>Projektov\u00e1 studie nebo schv\u00e1len\u00fd v\u00fdpo\u010det<\/td><\/tr><tr><td>Syst\u00e9mov\u00e9 nap\u011bt\u00ed<\/td><td>Maxim\u00e1ln\u00ed jmenovit\u00e9 a maxim\u00e1ln\u00ed mo\u017en\u00e9 stejnosm\u011brn\u00e9 nap\u011bt\u00ed v otev\u0159en\u00e9m obvodu<\/td><td>Zdroj a dokumentace n\u00e1vrhu syst\u00e9mu<\/td><\/tr><tr><td>Jmenovit\u00fd v\u00fdkon jisti\u010de<\/td><td>Pevnost v tahu za stejn\u00fdch stejnosm\u011brn\u00fdch podm\u00ednek<\/td><td>Tabulka p\u0159esn\u00fdch model\u016f a ozna\u010den\u00ed zkou\u0161ek<\/td><\/tr><tr><td>Sch\u00e9ma ty\u010d\u00ed<\/td><td>Po\u017eadovan\u00e9 s\u00e9riov\u00e9\/paraleln\u00ed zapojen\u00ed a polarita<\/td><td>P\u0159esn\u00fd sch\u00e9ma v\u00fdrobce<\/td><\/tr><tr><td>Instalace<\/td><td>Teplota, kryt a za\u0159\u00edzen\u00ed um\u00edst\u011bn\u00e1 p\u0159ed a za n\u00edm<\/td><td>Dokumentace k \u017e\u00e1dosti a koordinaci<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Odli\u0161it dostupn\u00fd poruchov\u00fd proud od jmenovit\u00e9ho proudu jisti\u010de<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Jmenovit\u00fd zkratov\u00fd proud ud\u00e1v\u00e1 velikost poruchov\u00e9ho proudu, kter\u00fd je zdroj a obvod schopny v dan\u00e9m m\u00edst\u011b dod\u00e1vat. Vyp\u00ednac\u00ed schopnost ud\u00e1v\u00e1 vyp\u00ednac\u00ed v\u00fdkon, kter\u00fd je pro ochrann\u00e9 za\u0159\u00edzen\u00ed dokumentov\u00e1n za stanoven\u00fdch podm\u00ednek. Jmenovit\u00fd v\u00fdkon jisti\u010de je t\u0159eba porovnat s po\u017eadavky projektu; jedno nelze pou\u017e\u00edt k odhadu druh\u00e9ho.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Zjist\u011bte hodnotu poruchov\u00e9ho proudu od odpov\u011bdn\u00e9ho technika nebo z ov\u011b\u0159en\u00e9 studie. Zaznamenejte typ zdroje, impedanci vodi\u010de, konfiguraci baterie nebo fotovoltaick\u00e9ho syst\u00e9mu a m\u00edsto instalace, proto\u017ee se tato hodnota m\u016f\u017ee v r\u00e1mci syst\u00e9mu m\u011bnit. Nepou\u017e\u00edvejte obecnou hodnotu pro dan\u00e9 m\u00edsto, ani\u017e byste si ov\u011b\u0159ili jej\u00ed um\u00edst\u011bn\u00ed a z\u00e1klad.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Zvolte odpov\u00eddaj\u00edc\u00ed jmenovit\u00e9 stejnosm\u011brn\u00e9 nap\u011bt\u00ed<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Jmenovit\u00e1 vyp\u00ednac\u00ed schopnost se m\u016f\u017ee li\u0161it v z\u00e1vislosti na nap\u011bt\u00ed syst\u00e9mu. Porovnejte maxim\u00e1ln\u00ed relevantn\u00ed stejnosm\u011brn\u00e9 nap\u011bt\u00ed projektu s konkr\u00e9tn\u00ed \u0159adou jisti\u010d\u016f za stejn\u00fdch podm\u00ednek. Hodnota v kA p\u0159i ni\u017e\u0161\u00edm nap\u011bt\u00ed neznamen\u00e1, \u017ee je mo\u017en\u00e9 ji pou\u017e\u00edt i p\u0159i vy\u0161\u0161\u00edm nap\u011bt\u00ed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">U fotovoltaick\u00fdch syst\u00e9m\u016f a zdroj\u016f akumulace energie je t\u0159eba rozli\u0161ovat mezi jmenovit\u00fdm provozn\u00edm nap\u011bt\u00edm a maxim\u00e1ln\u00edm mo\u017en\u00fdm nap\u011bt\u00edm za p\u0159\u00edslu\u0161n\u00fdch provozn\u00edch podm\u00ednek. Tento \u010dl\u00e1nek nestanovuje nap\u011b\u0165ovou rezervu; vy\u017eaduje, aby byla hodnota pro dan\u00fd projekt zdokumentov\u00e1na p\u0159ed v\u00fdb\u011brem.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Zajist\u011bte spr\u00e1vn\u00e9 p\u0159ipojen\u00ed p\u00f3l\u016f a dodr\u017ete polaritu<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">N\u011bkter\u00e9 \u0159ady jisti\u010d\u016f DC MCB vyu\u017e\u00edvaj\u00ed specifick\u00e9 uspo\u0159\u00e1d\u00e1n\u00ed p\u00f3l\u016f k dosa\u017een\u00ed dokumentovan\u00e9 jmenovit\u00e9 nap\u011bt\u00ed nebo p\u0159eru\u0161ovac\u00ed schopnosti. Dokumentace spole\u010dnosti ABB vysv\u011btluje, pro\u010d je nutn\u00e9 br\u00e1t v \u00favahu jmenovit\u00fd proud DC, zapojen\u00ed p\u00f3l\u016f a polaritu jako jeden celek. Uveden\u00e9 sch\u00e9mata a hodnoty se nevztahuj\u00ed na jisti\u010de RITOKS.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Vy\u017e\u00e1dejte si p\u0159esn\u00fd sch\u00e9ma vydan\u00e9 pro dan\u00fd k\u00f3d objedn\u00e1vky. Nevyvozujte z\u00e1v\u011bry o s\u00e9riov\u00e9m zapojen\u00ed na z\u00e1klad\u011b po\u010dtu p\u00f3l\u016f a nekop\u00edrujte zapojen\u00ed od jin\u00e9 zna\u010dky. Ozna\u010den\u00ed polarity, pokud jsou uvedena, je t\u0159eba vykl\u00e1dat v\u00fdhradn\u011b podle p\u0159esn\u00fdch pokyn\u016f v\u00fdrobce.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">P\u0159e\u010dt\u011bte si ozna\u010den\u00ed ratingu a podm\u00ednky<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Dokumentace by m\u011bla uv\u00e1d\u011bt \u00fadaj o mezn\u00ed zat\u00ed\u017eitelnosti, p\u0159\u00edslu\u0161nou normu nebo zku\u0161ebn\u00ed z\u00e1klad, nap\u011bt\u00ed, typ proudu a p\u0159\u00edpadn\u00e1 podm\u00edn\u011bn\u00e1 omezen\u00ed. Zkratky, kter\u00e9 se navz\u00e1jem podobaj\u00ed, ani tabulky pro st\u0159\u00eddav\u00fd a stejnosm\u011brn\u00fd proud nejsou vz\u00e1jemn\u011b zam\u011bniteln\u00e9. V z\u00e1znamu o schv\u00e1len\u00ed je t\u0159eba zachovat p\u016fvodn\u00ed zn\u011bn\u00ed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pokud projekt vy\u017eaduje konkr\u00e9tn\u00ed certifikaci nebo normu, vy\u017e\u00e1dejte si p\u0159esn\u00fd rozsah a specifikaci model\u016f, na kter\u00e9 se vztahuje. Logo v bro\u017eu\u0159e o produktov\u00e9 \u0159ad\u011b je\u0161t\u011b neznamen\u00e1, \u017ee uveden\u00e1 konfigurace pro\u0161la pot\u0159ebn\u00fdm posouzen\u00edm.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">P\u0159ezkoum\u00e1n\u00ed ochrany a koordinace jako syst\u00e9mu<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Adekv\u00e1tn\u00ed vyp\u00ednac\u00ed schopnost sama o sob\u011b nezaji\u0161\u0165uje ochranu vodi\u010de, kompatibilitu se z\u00e1t\u011b\u017e\u00ed, selektivitu, z\u00e1lo\u017en\u00ed ochranu ani bezpe\u010dn\u00e9 odpojen\u00ed. Charakteristiky vyp\u00edn\u00e1n\u00ed, trval\u00fd proud, provozn\u00ed podm\u00ednky a zbytek ochrann\u00e9ho syst\u00e9mu p\u0159edstavuj\u00ed samostatn\u00e9 kontroln\u00ed faktory.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pokud je n\u00e1vrh na nich zalo\u017een, po\u017e\u00e1dejte o koordina\u010dn\u00ed nebo z\u00e1lo\u017en\u00ed tabulky od v\u00fdrobce. Nep\u0159edpokl\u00e1dejte, \u017ee v\u011bt\u0161\u00ed jisti\u010d v p\u0159edch\u00e1zej\u00edc\u00edm \u00faseku, stejn\u00e1 zna\u010dka nebo shodn\u00e9 ozna\u010den\u00ed proudu zaru\u010duj\u00ed ov\u011b\u0159enou kombinaci.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">P\u0159ed schv\u00e1len\u00edm si p\u0159ipravte dokumentaci s podklady<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Vytvo\u0159te jeden hodnot\u00edc\u00ed list pro navrhovan\u00fd objednac\u00ed k\u00f3d nebo syst\u00e9m DC MCB. Do jednoho sloupce uve\u010fte vstupn\u00ed \u00fadaje projektu a do druh\u00e9ho podklady od dodavatele. Uve\u010fte p\u0159esn\u00e9 str\u00e1nky, v\u00fdkresy, k\u0159ivky a tabulky pou\u017eit\u00e9 p\u0159i rozhodov\u00e1n\u00ed, v\u010detn\u011b data jejich revize nebo z\u00edsk\u00e1n\u00ed. Str\u00e1nka s kategori\u00ed m\u016f\u017ee poskytnout kontext produktov\u00e9 rodiny, ale p\u0159esn\u00e9 \u00fadaje o jmenovit\u00e9m v\u00fdkonu, p\u0159ipojen\u00ed nebo v\u00fdkonnosti mus\u00ed b\u00fdt p\u0159i\u0159azeny k uveden\u00e9 konfiguraci.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Check that every accepted value describes the same orderable DC MCB configuration. Similar housings can have different current ratings, pole arrangements, polarity restrictions or accessories. Do not combine the voltage rating of one variant, the breaking capacity of another and a wiring diagram from a third. The quotation should identify the exact order code and the supporting documents used to confirm its DC voltage, breaking capacity and permitted connection. Mark unresolved fields explicitly before approval.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Zm\u011bny v \u0159\u00edzen\u00ed b\u011bhem zaji\u0161\u0165ov\u00e1n\u00ed zdroj\u016f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Z\u00e1znam o \u017e\u00e1dosti ponechte zmrazen\u00fd, dokud dodavatel\u00e9 neodpov\u00ed. Pokud dojde ke zm\u011bn\u011b z\u00e1t\u011b\u017ee, nap\u011bt\u00ed, prost\u0159ed\u00ed, provozn\u00edch podm\u00ednek, krytu, zp\u016fsobu \u0159\u00edzen\u00ed nebo po\u017eadovan\u00e9ho v\u00fdkonu, vystavte revidovan\u00fd z\u00e1znam a po\u017e\u00e1dejte ka\u017ed\u00e9ho dodavatele o op\u011btovn\u00e9 potvrzen\u00ed vybran\u00e9ho produktu. V opa\u010dn\u00e9m p\u0159\u00edpad\u011b by se mohly dv\u011b nab\u00eddky jevit jako srovnateln\u00e9, a\u010dkoli by spl\u0148ovaly odli\u0161n\u00e9 technick\u00e9 po\u017eadavky.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Navrhovan\u00e1 n\u00e1hrada se posuzuje podle stejn\u00fdch krit\u00e9ri\u00ed. Stejn\u00e9 rozm\u011bry, podobn\u00e1 fotografie produktu nebo stejn\u00e9 hodnocen\u00ed v nadpisu nesta\u010d\u00ed. N\u00e1hrada mus\u00ed spl\u0148ovat po\u017eadovan\u00e9 funkce a podm\u00ednky na z\u00e1klad\u011b sv\u00e9 vlastn\u00ed p\u0159esn\u00e9 dokumentace.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u010cast\u00e9 chyby p\u0159i zad\u00e1v\u00e1n\u00ed ve\u0159ejn\u00fdch zak\u00e1zek<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li>V\u00fdb\u011br jisti\u010de pro stejnosm\u011brn\u00fd proud z jedn\u00e9 jmenovit\u00e9 hodnoty, p\u0159i\u010dem\u017e kontext pou\u017eit\u00ed z\u016fst\u00e1v\u00e1 nedefinov\u00e1n.<\/li><li>Pou\u017eit\u00ed k\u0159ivky, diagramu nebo \u00fadaje o v\u00fdkonu z podobn\u00e9ho modelu.<\/li><li>Comparing breaking-capacity values specified at different DC voltages, pole connections or test conditions.<\/li><li>Pova\u017eovat p\u0159ilo\u017een\u00e9 p\u0159\u00edslu\u0161enstv\u00ed a funkce syst\u00e9mu za samoz\u0159ejm\u00e9 ji\u017e z n\u00e1zvu produktu.<\/li><li>Schv\u00e1len\u00ed nahrazen\u00ed bez op\u011btovn\u00e9ho zah\u00e1jen\u00ed p\u0159ezkumu technick\u00fdch d\u016fkaz\u016f.<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">A kA label without the rated DC voltage and pole connection is not a comparable breaking-capacity claim. Separate the installation&#8217;s prospective fault current from the breaker&#8217;s documented interruption rating; do not borrow another manufacturer&#8217;s diagram or another variant&#8217;s value.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Jak porovnat nab\u00eddky dodavatel\u016f<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Srovn\u00e1vac\u00ed bod<\/th><th>Po\u017eadovan\u00e9 d\u016fkazy<\/th><th>Nep\u0159ij\u00edmejte<\/th><\/tr><\/thead><tbody><tr><td>Poruchov\u00fd proud<\/td><td>Vypo\u010d\u00edt\u00e1no p\u0159esn\u011b v m\u00edst\u011b instalace<\/td><td>Obecn\u00fd zdroj nebo hodnota kA dan\u00e9ho m\u00edsta<\/td><\/tr><tr><td>Nap\u011bt\u00ed<\/td><td>Definice podm\u00ednky maxim\u00e1ln\u00edho stejnosm\u011brn\u00e9ho proudu<\/td><td>Pouze jmenovit\u00e9 nap\u011bt\u00ed<\/td><\/tr><tr><td>Aktu\u00e1ln\u00ed hodnocen\u00ed<\/td><td>P\u0159esn\u00fd model p\u0159i stejn\u00e9m nap\u011bt\u00ed a stejn\u00e9m po\u010dtu p\u00f3l\u016f<\/td><td>Nevhodn\u00fd titulek v kA<\/td><\/tr><tr><td>P\u0159ipojen\u00ed<\/td><td>Zkontrolov\u00e1n sch\u00e9ma v\u00fdrobce a polarita<\/td><td>Vizu\u00e1ln\u00ed po\u010d\u00edt\u00e1n\u00ed sloup\u016f jako pravidlo pro veden\u00ed kabel\u00e1\u017ee<\/td><\/tr><tr><td>Ochrana syst\u00e9mu<\/td><td>Cesta a koordinace se kontroluj\u00ed samostatn\u011b<\/td><td>Kapacita p\u0159eru\u0161en\u00ed pova\u017eovan\u00e1 za \u00fapln\u00fd v\u00fdb\u011br<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">V\u0161echny nab\u00eddky DC MCB sjedno\u0165te do jednoho z\u00e1znamu \u017e\u00e1dosti. U ka\u017ed\u00e9 hodnoty uve\u010fte revize dokument\u016f, zku\u0161ebn\u00ed podm\u00ednky a otev\u0159en\u00e9 ot\u00e1zky. Nab\u00eddka m\u016f\u017ee z\u016fstat obchodn\u011b zaj\u00edmav\u00e1, i kdy\u017e je technicky ne\u00fapln\u00e1, av\u0161ak chyb\u011bj\u00edc\u00ed podklady mus\u00ed z\u016fstat viditeln\u00e9, dokud nebudou vy\u0159e\u0161eny.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Pracovn\u00ed postup p\u0159i rozhodov\u00e1n\u00ed<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li>Ur\u010dete zdroj stejnosm\u011brn\u00e9ho proudu, um\u00edst\u011bn\u00ed obvodu a maxim\u00e1ln\u00ed nap\u011bt\u00ed.<\/li><li>Zjist\u011bte p\u0159edpokl\u00e1dan\u00fd poruchov\u00fd proud v m\u00edst\u011b instalace jisti\u010de.<\/li><li>Ur\u010dete p\u0159esn\u00fd model a objednac\u00ed k\u00f3d.<\/li><li>V jednom \u0159\u00e1dku dokumentu uve\u010fte jmenovitou p\u0159eru\u0161ovac\u00ed schopnost, nap\u011bt\u00ed a po\u010det p\u00f3l\u016f.<\/li><li>Projd\u011bte si pr\u016fb\u011bh j\u00edzdy, bezpe\u010dnost pr\u016fvod\u010d\u00edho a nezbytnou koordinaci.<\/li><li>V\u00fdpo\u010det, technick\u00fd list, sch\u00e9ma a revizi schv\u00e1len\u00ed ulo\u017ete spole\u010dn\u011b do archivu.<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Zjist\u011bte hodnotu poruchov\u00e9ho proudu projektu a maxim\u00e1ln\u00ed stejnosm\u011brn\u00e9 nap\u011bt\u00ed. Porovnejte je s konkr\u00e9tn\u00ed \u0159adou jisti\u010d\u016f s ohledem na jejich p\u00f3lov\u00e9 zapojen\u00ed, polaritu a ozna\u010den\u00ed jmenovit\u00e9ho v\u00fdkonu a p\u0159ed schv\u00e1len\u00edm n\u00e1hradn\u00edho \u0159e\u0161en\u00ed si vy\u017e\u00e1dejte p\u0159\u00edpadn\u00e9 chyb\u011bj\u00edc\u00ed k\u0159ivky nebo dokumentaci.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Kontroln\u00ed seznam pro p\u0159\u00edpravu \u017e\u00e1dosti o nab\u00eddku<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">U\u017eite\u010dn\u00e1 popt\u00e1vka t\u00fdkaj\u00edc\u00ed se vyp\u00ednac\u00ed schopnosti jisti\u010de pro stejnosm\u011brn\u00fd proud je dostate\u010dn\u011b stru\u010dn\u00e1, aby se na ni dalo snadno odpov\u011bd\u011bt, a z\u00e1rove\u0148 dostate\u010dn\u011b podrobn\u00e1, aby se p\u0159ede\u0161lo skryt\u00fdm p\u0159edpoklad\u016fm. Nezn\u00e1m\u00e9 hodnoty formulujte jako ot\u00e1zky a po\u017eadujte p\u0159esn\u00fd objednac\u00ed k\u00f3d nam\u00edsto obecn\u00e9ho doporu\u010den\u00ed \u0159ady v\u00fdrobk\u016f.<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Typ zdroje stejnosm\u011brn\u00e9ho proudu a funkce obvodu<\/li><li>Jmenovit\u00e9 a maxim\u00e1ln\u00ed mo\u017en\u00e9 stejnosm\u011brn\u00e9 nap\u011bt\u00ed<\/li><li>P\u0159edpokl\u00e1dan\u00fd zkratov\u00fd proud v m\u00edst\u011b instalace<\/li><li>Trval\u00fd zat\u011b\u017eovac\u00ed proud a p\u0159echodov\u00e9 chov\u00e1n\u00ed<\/li><li>Po\u017eadovan\u00e9 uspo\u0159\u00e1d\u00e1n\u00ed sloup\u016f a izolace<\/li><li>Tabulka p\u0159esn\u00fdch p\u0159etr\u017en\u00fdch zat\u00ed\u017een\u00ed a sch\u00e9ma zapojen\u00ed<\/li><li>Po\u017eadavky na ochranu \u017eivotn\u00edho prost\u0159ed\u00ed, koordinaci a certifikaci<\/li><li>Mno\u017estv\u00ed, m\u00edsto ur\u010den\u00ed a revize dokumentu<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Vy\u017e\u00e1dejte si aktu\u00e1ln\u00ed verzi technick\u00e9ho listu a informace o rozsahu p\u0159\u00edpadn\u00fdch certifikac\u00ed, kompatibility \u010di v\u00fdkonnostn\u00edch specifikac\u00ed. Po zad\u00e1n\u00ed technick\u00fdch \u00fadaj\u016f zaznamenejte mno\u017estv\u00ed a m\u00edsto ur\u010den\u00ed, aby obchodn\u00ed podm\u00ednky nezast\u00ednily nevy\u0159e\u0161en\u00e9 technick\u00e9 ot\u00e1zky.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Podm\u00ednky zastaven\u00ed p\u0159ed vyd\u00e1n\u00edm objedn\u00e1vky<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Objedn\u00e1vku nevyd\u00e1vejte, pokud nen\u00ed zn\u00e1m\u00fd n\u011bkter\u00fd z kl\u00ed\u010dov\u00fdch vstupn\u00edch parametr\u016f aplikace, pokud je uveden\u00fd model nejednozna\u010dn\u00fd, pokud je po\u017eadovan\u00fd v\u00fdkon uveden pouze v dokumentaci jin\u00e9ho v\u00fdrobce nebo pokud instala\u010dn\u00ed podm\u00ednky p\u0159esahuj\u00ed r\u00e1mec dostupn\u00fdch podklad\u016f. Jedn\u00e1 se o technick\u00e9 nedostatky, nikoli o redak\u010dn\u00ed detaily.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V z\u00e1znamu o schv\u00e1len\u00ed by m\u011blo b\u00fdt uvedeno, k \u010demu slou\u017e\u00ed vybran\u00e1 polo\u017eka, co nespad\u00e1 do jej\u00edho rozsahu a kter\u00e9 konkr\u00e9tn\u00ed dokumenty jsou podkladem pro dan\u00e9 rozhodnut\u00ed. Dojde-li ke zm\u011bn\u011b \u017e\u00e1dosti nebo kandid\u00e1ta, je t\u0159eba dot\u010den\u00e9 kontroly prov\u00e9st znovu, m\u00edsto aby se p\u0159evzal p\u0159edchoz\u00ed z\u00e1v\u011br.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u010casto kladen\u00e9 ot\u00e1zky<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Je vy\u0161\u0161\u00ed hodnota kA v\u017edy lep\u0161\u00ed?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u016f\u017ee to znamenat vy\u0161\u0161\u00ed zdokumentovanou schopnost p\u0159eru\u0161en\u00ed za uveden\u00fdch podm\u00ednek, av\u0161ak nap\u011bt\u00ed, po\u010det p\u00f3l\u016f, po\u017eadavky na vyp\u00edn\u00e1n\u00ed a syst\u00e9mov\u00e9 po\u017eadavky mus\u00ed i nad\u00e1le odpov\u00eddat.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Lze brzdn\u00fd v\u00fdkon st\u0159\u00eddav\u00e9ho proudu pou\u017e\u00edt v obvodu stejnosm\u011brn\u00e9ho proudu?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Nep\u0159edpokl\u00e1dejte to. Pou\u017eijte udan\u00e9 jmenovit\u00e9 stejnosm\u011brn\u00e9 nap\u011bt\u00ed pro konkr\u00e9tn\u00ed model a konfiguraci.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Z\u00e1vis\u00ed vyp\u00ednac\u00ed schopnost na vyp\u00ednac\u00ed charakteristice?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ne. Jmenovit\u00e1 p\u0159eru\u0161ovac\u00ed schopnost a \u010dasov\u011b-proudov\u00e1 charakteristika jsou samostatn\u00e9 \u010d\u00e1sti protokolu o zkou\u0161ce jisti\u010de.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Souvisej\u00edc\u00ed produkty a pokyny spole\u010dnosti RITOKS<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Tyto odkazy pou\u017eijte jako samostatn\u00e9 z\u00e1znamy kategori\u00ed, produkt\u016f a zdroj\u016f. Kontextov\u00fd odkaz neznamen\u00e1 zam\u011bnitelnost, kompatibilitu ani schv\u00e1lenou kombinaci syst\u00e9m\u016f.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/ritoks.com\/cs\/product-category\/dc-power-protection\/dc-circuit-breakers\/dc-miniature-circuit-breakers\/\">Produktov\u00e1 kategorie DC MCB<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/ritoks.com\/cs\/products\/2p-dc-miniature-circuit-breaker-500-1000v-6-63a\/\">\u0158ada jisti\u010d\u016f 2P DC MCB<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/ritoks.com\/cs\/products\/high-current-dc-miniature-circuit-breaker-12-125v-63-250a\/\">\u0158ada vysokoproudov\u00fdch n\u00edzkonap\u011b\u0165ov\u00fdch stejnosm\u011brn\u00fdch jisti\u010d\u016f (MCB)<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/ritoks.com\/cs\/dc-mcb-selection-guide\/\">Pr\u016fvodce v\u00fdb\u011brem jisti\u010d\u016f DC<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/ritoks.com\/cs\/dc-mcb-rfq-checklist\/\">Kontroln\u00ed seznam pro popt\u00e1vku na DC MCB<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Technick\u00e9 odkazy<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Tyto zdroje od p\u016fvodn\u00edch v\u00fdrobc\u016f slou\u017e\u00ed pouze k ilustraci obecn\u00fdch princip\u016f uveden\u00fdch n\u00ed\u017ee. \u00dadaje o vlastnostech jejich v\u00fdrobk\u016f, sch\u00e9mata a certifik\u00e1ty se nevztahuj\u00ed na v\u00fdrobky spole\u010dnosti RITOKS.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/library.e.abb.com\/public\/4009e91864554accb8c325cb552f18e0\/9AKK108468A3912_en_9AKK108468A3912_B01_D_B01%20Electrical%20installation%20solutions%20for%20buildings_part%20B01%20MCBs%20_EN_%20%28PDF%29.pdf\" target=\"_blank\" rel=\"noopener\">ABB, miniaturn\u00ed jisti\u010de pro stejnosm\u011brn\u00e9 aplikace<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Umo\u017e\u0148uje p\u0159esnou s\u00e9riovou kontrolu stejnosm\u011brn\u00e9ho nap\u011bt\u00ed, zapojen\u00ed p\u00f3l\u016f, polarity a vyp\u00ednac\u00ed schopnosti. Sch\u00e9mata a technick\u00e9 \u00fadaje spole\u010dnosti ABB se nevztahuj\u00ed na za\u0159\u00edzen\u00ed RITOKS.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Po\u017e\u00e1dat o posouzen\u00ed konkr\u00e9tn\u00edho modelu<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Po\u017eadavky na aplikaci, konkr\u00e9tn\u00ed dotazy t\u00fdkaj\u00edc\u00ed se dokumentace, mno\u017estv\u00ed a m\u00edsto ur\u010den\u00ed za\u0161lete prost\u0159ednictv\u00edm kontaktn\u00edho formul\u00e1\u0159e spole\u010dnosti RITOKS. \u017d\u00e1dost o cenovou nab\u00eddku vy\u017eaduje posouzen\u00ed konkr\u00e9tn\u00edho modelu; tato p\u0159\u00edru\u010dka neschvaluje n\u00e1vrh zapojen\u00ed, instalaci ani automatickou n\u00e1hradu.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/ritoks.com\/cs\/contact-us\/\">Kontaktujte spole\u010dnost RITOKS<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Verify DC MCB breaking capacity against prospective fault current, system voltage, pole configuration, polarity and exact manufacturer documentation.<\/p>","protected":false},"author":0,"featured_media":1412,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center 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center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ritoks_resource_detail_renderer":"viox","ritoks_resource_product_cat_term_id":125,"footnotes":""},"categories":[64],"tags":[],"class_list":["post-1415","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-circuit-protection"],"acf":[],"spectra_blocks_featured_image_url":{"thumbnail":{"url":"https:\/\/ritoks.com\/wp-content\/uploads\/2026\/09\/dc-mcb-breaking-capacity-verification-hero-01-150x150.webp","width":150,"height":150},"medium":{"url":"https:\/\/ritoks.com\/wp-content\/uploads\/2026\/09\/dc-mcb-breaking-capacity-verification-hero-01-300x169.webp","width":300,"height":169},"medium_large":{"url":"https:\/\/ritoks.com\/wp-content\/uploads\/2026\/09\/dc-mcb-breaking-capacity-verification-hero-01-768x432.webp","width":768,"height":432},"large":{"url":"https:\/\/ritoks.com\/wp-content\/uploads\/2026\/09\/dc-mcb-breaking-capacity-verification-hero-01-1024x576.webp","width":1024,"height":576},"full":{"url":"https:\/\/ritoks.com\/wp-content\/uploads\/2026\/09\/dc-mcb-breaking-capacity-verification-hero-01.webp","width":1600,"height":900}},"spectra_blocks_author_info":{"display_name":"","avatar_url":"https:\/\/secure.gravatar.com\/avatar\/?s=96&d=mm&r=g","author_link":"https:\/\/ritoks.com\/cs\/author\/","description":""},"_links":{"self":[{"href":"https:\/\/ritoks.com\/cs\/wp-json\/wp\/v2\/posts\/1415","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ritoks.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ritoks.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/ritoks.com\/cs\/wp-json\/wp\/v2\/comments?post=1415"}],"version-history":[{"count":4,"href":"https:\/\/ritoks.com\/cs\/wp-json\/wp\/v2\/posts\/1415\/revisions"}],"predecessor-version":[{"id":2292,"href":"https:\/\/ritoks.com\/cs\/wp-json\/wp\/v2\/posts\/1415\/revisions\/2292"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ritoks.com\/cs\/wp-json\/wp\/v2\/media\/1412"}],"wp:attachment":[{"href":"https:\/\/ritoks.com\/cs\/wp-json\/wp\/v2\/media?parent=1415"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ritoks.com\/cs\/wp-json\/wp\/v2\/categories?post=1415"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ritoks.com\/cs\/wp-json\/wp\/v2\/tags?post=1415"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}