{"id":21474,"date":"2026-01-28T18:23:42","date_gmt":"2026-01-28T10:23:42","guid":{"rendered":"https:\/\/viox.com\/?p=21474"},"modified":"2026-01-28T18:23:46","modified_gmt":"2026-01-28T10:23:46","slug":"mccb-short-time-delay-icw-rating-explained","status":"publish","type":"post","link":"https:\/\/test.viox.com\/hu\/mccb-short-time-delay-icw-rating-explained\/","title":{"rendered":"Mi\u00e9rt k\u00edn\u00e1lnak az MCCB-k r\u00f6vidz\u00e1rlati k\u00e9sleltet\u00e9si v\u00e9delmet n\u00e9vleges r\u00f6vidz\u00e1rlati \u00e1ram\u00e1ll\u00f3s\u00e1g (I<sub>cw<\/sub>)"},"content":{"rendered":"<div class=\"product-intro\">\n<figure style=\"text-align: center; margin: 20px 0;\"><img decoding=\"async\" style=\"max-width: 100%; height: auto;\" src=\"https:\/\/img.viox.com\/MCCB-electronic-trip-unit-in-industrial-panel-showing-400A-rating-and-current-display.webp\" alt=\"MCCB electronic trip unit in industrial panel showing 400A rating and current display - VIOX Electric\" \/><figcaption style=\"font-style: italic; color: #555; margin-top: 8px;\">MCCB elektronikus kiold\u00f3egys\u00e9g ipari panelben, 400A n\u00e9vleges \u00e1ramer\u0151ss\u00e9ggel \u00e9s \u00e1ramkijelz\u00e9ssel \u2013 VIOX Electric<\/figcaption><\/figure>\n<h2>K\u00f6zvetlen v\u00e1lasz<\/h2>\n<p><strong><a href=\"https:\/\/test.viox.com\/hu\/mccb\/\">\u00d6nt\u00f6tt tokos megszak\u00edt\u00f3k (MCCB)<\/a> r\u00f6vididej\u0171 k\u00e9sleltet\u00e9si v\u00e9delmet tud ny\u00fajtani n\u00e9vleges r\u00f6vidz\u00e1rlati \u00e1ram\u00e1ll\u00f3s\u00e1g (I<sub>cw<\/sub>) n\u00e9lk\u00fcl, mert az IEC 60947-2 A kateg\u00f3ri\u00e1j\u00e1ba tartoznak, ahol a szelektivit\u00e1st \u00e1ramkorl\u00e1toz\u00f3 technol\u00f3gi\u00e1val \u00e9rik el, nem pedig sz\u00e1nd\u00e9kos id\u0151beli k\u00e9sleltet\u00e9ssel.<\/strong> Ellent\u00e9tben a B kateg\u00f3ri\u00e1j\u00fa l\u00e9gmegszak\u00edt\u00f3kkal (ACB), amelyek a magas I<sub>cw<\/sub> \u00e9rt\u00e9kekkel \"kiv\u00e1rj\u00e1k\" a hiba\u00e1ramokat, az MCCB-k elektrom\u00e1gneses kontaktus tasz\u00edt\u00e1st \u00e9s ultragyors \u00edvmegszak\u00edt\u00e1st haszn\u00e1lnak a hibaenergia korl\u00e1toz\u00e1s\u00e1ra \u2013 v\u00e9dve magukat, mik\u00f6zben a downstream eszk\u00f6z\u00f6kkel is koordin\u00e1lnak a benne rejl\u0151 r\u00f6vid k\u00e9sleltet\u00e9si jellemz\u0151ik (\u00e1ltal\u00e1ban 10-12\u00d7 I<sub>n<\/sub>) r\u00e9v\u00e9n az azonnali kiold\u00e1si k\u00fcsz\u00f6b alatt.<\/p>\n<hr \/>\n<h2>A legfontosabb tudnival\u00f3k<\/h2>\n<ul>\n<li>\u2705 <strong>A vs. B kateg\u00f3ria<\/strong>: Az MCCB-k (A kateg\u00f3ria) nem rendelkeznek deklar\u00e1lt I<sub>cw<\/sub> \u00e9rt\u00e9kekkel, de rendelkeznek inherens r\u00f6vididej\u0171 \u00e1ram\u00e1ll\u00f3s\u00e1gi k\u00e9pess\u00e9ggel a kontaktus tasz\u00edt\u00e1si k\u00fcsz\u00f6b\u00fck alatt (\u00e1ltal\u00e1ban &gt;12-14\u00d7 I<sub>n<\/sub>)<\/li>\n<li>\u2705 <strong>\u00c1ramkorl\u00e1toz\u00f3 fizika<\/strong>: A kontaktusrug\u00f3 nyom\u00e1sa sz\u00e1nd\u00e9kosan alacsony az MCCB-kben, hogy lehet\u0151v\u00e9 tegye a gyors elektrom\u00e1gneses tasz\u00edt\u00e1st magas hiba\u00e1ramokn\u00e1l (&gt;25\u00d7 I<sub>n<\/sub>), megel\u0151zve a k\u00e1rosod\u00e1st gyors megszak\u00edt\u00e1ssal, nem pedig elh\u00faz\u00f3d\u00f3 \u00e1ram\u00e1ll\u00f3s\u00e1ggal.<\/li>\n<li>\u2705 <strong>R\u00f6vid k\u00e9sleltet\u00e9s val\u00f3s\u00e1ga<\/strong>: Az MCCB r\u00f6vid k\u00e9sleltet\u00e9si be\u00e1ll\u00edt\u00e1sai (pl. 10\u00d7 I<sub>n<\/sub>, 0,4s) csak akkor m\u0171k\u00f6dnek, ha a hiba\u00e1ram az azonnali kiold\u00e1si k\u00fcsz\u00f6b alatt marad \u2013 ennek t\u00fall\u00e9p\u00e9se azonnali beavatkoz\u00e1st v\u00e1lt ki m\u00e1gneses kiold\u00e1ssal vagy energia alap\u00fa mechanizmusokkal.<\/li>\n<li>\u2705 <strong>Szelektivit\u00e1si korl\u00e1tok<\/strong>: Az MCCB-k k\u00f6z\u00f6tti teljes szelektivit\u00e1s gondos koordin\u00e1ci\u00f3s t\u00e1bl\u00e1zatokat ig\u00e9nyel; az ACB-MCCB kaszk\u00e1dok jobb eredm\u00e9nyeket \u00e9rnek el, mert az ACB-k val\u00f3ban k\u00e9sleltethetnek (I<sub>cw<\/sub> = I<sub>cu<\/sub> k\u00e9pess\u00e9g), m\u00edg az MCCB-k a downstream hib\u00e1kat kezelik.<\/li>\n<li>\u2705 <strong>Biztons\u00e1gi fel\u00fcl\u00edr\u00e1s<\/strong>: A fejlett, kikapcsolhat\u00f3 azonnali kiold\u00e1ssal rendelkez\u0151 MCCB-k (pl. Schneider NSX) \u201cenergia kiold\u00f3\u201d vagy \u201cazonnali fel\u00fcl\u00edr\u00e1s\u201d funkci\u00f3kat tartalmaznak \u2013 ha a hiba\u00e1ram meghaladja a ~25\u00d7 I<sub>n<\/sub>, \u00e9rt\u00e9ket, a g\u00e1zzal m\u0171k\u00f6dtetett mechanizmusok azonnali kiold\u00e1st k\u00e9nyszer\u00edtenek ki a be\u00e1ll\u00edt\u00e1sokt\u00f3l f\u00fcggetlen\u00fcl.<\/li>\n<\/ul>\n<hr \/>\n<h2>Az IEC 60947-2 szelektivit\u00e1si kateg\u00f3ri\u00e1inak meg\u00e9rt\u00e9se<\/h2>\n<figure style=\"text-align: center; margin: 20px 0;\"><img decoding=\"async\" style=\"max-width: 100%; height: auto;\" src=\"https:\/\/img.viox.com\/Size-and-construction-comparison-between-ACB-with-Icw-rating-and-compact-MCCB-Category-A-breaker.webp\" alt=\"Size and construction comparison between ACB with Icw rating and compact MCCB Category A breaker - VIOX Electric\" \/><figcaption style=\"font-style: italic; color: #555; margin-top: 8px;\">M\u00e9ret- \u00e9s konstrukci\u00f3 \u00f6sszehasonl\u00edt\u00e1s Icw n\u00e9vleges \u00e9rt\u00e9k\u0171 ACB \u00e9s kompakt MCCB A kateg\u00f3ri\u00e1s megszak\u00edt\u00f3 k\u00f6z\u00f6tt \u2013 VIOX Electric<\/figcaption><\/figure>\n<h3>B kateg\u00f3ria: ACB-k deklar\u00e1lt I<sub>cw<\/sub><\/h3>\n<p>A l\u00e9gmegszak\u00edt\u00f3kat (ACB) a k\u00f6vetkez\u0151kre tervezt\u00e9k: <strong>B kateg\u00f3ria<\/strong> olyan alkalmaz\u00e1sok, ahol a szelektivit\u00e1st sz\u00e1nd\u00e9kos r\u00f6vididej\u0171 k\u00e9sleltet\u00e9ssel \u00e9rik el. Az IEC 60947-2 szerint ezeknek az eszk\u00f6z\u00f6knek deklar\u00e1lniuk kell egy n\u00e9vleges r\u00f6vididej\u0171 \u00e1ram\u00e1ll\u00f3s\u00e1got (I<sub>cw<\/sub>) \u2013 a maxim\u00e1lis hiba\u00e1ramot, amelyet a megszak\u00edt\u00f3 z\u00e1rt helyzetben meghat\u00e1rozott ideig (0,05s, 0,1s, 0,25s, 0,5s vagy 1,0s) k\u00e1rosod\u00e1s n\u00e9lk\u00fcl k\u00e9pes elviselni.<\/p>\n<p><strong>A B kateg\u00f3ri\u00e1s megszak\u00edt\u00f3k f\u0151bb jellemz\u0151i:<\/strong><\/p>\n<table style=\"border-collapse: collapse; width: 100%; margin: 20px 0;\" border=\"1\" cellpadding=\"10\">\n<thead>\n<tr style=\"background-color: #f2f2f2;\">\n<th>Param\u00e9ter<\/th>\n<th>Specifik\u00e1ci\u00f3<\/th>\n<th>C\u00e9l<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>I<sub>cw<\/sub> \u00c9rt\u00e9kel\u00e9s<\/strong><\/td>\n<td>Minimum 12\u00d7 I<sub>n<\/sub> vagy 5kA (\u22642500A keretek)<br \/>\nMinimum 30kA (&gt;2500A keretek)<\/td>\n<td>Lehet\u0151v\u00e9 teszi a sz\u00e1nd\u00e9kos k\u00e9sleltet\u00e9st hib\u00e1k eset\u00e9n<\/td>\n<\/tr>\n<tr>\n<td><strong>Kapcsolat Design<\/strong><\/td>\n<td>Magas rug\u00f3nyom\u00e1s<\/td>\n<td>Megakad\u00e1lyozza a kontaktus tasz\u00edt\u00e1st a k\u00e9sleltet\u00e9si id\u0151szak alatt<\/td>\n<\/tr>\n<tr>\n<td><strong>Kiold\u00e1s elhalaszthat\u00f3s\u00e1ga<\/strong><\/td>\n<td>Az azonnali kiold\u00e1s letilthat\u00f3<\/td>\n<td>Lehet\u0151v\u00e9 teszi a tiszta id\u0151alap\u00fa koordin\u00e1ci\u00f3t<\/td>\n<\/tr>\n<tr>\n<td><strong>Tipikus Alkalmaz\u00e1s<\/strong><\/td>\n<td>F\u0151 bet\u00e1pl\u00e1l\u00f3k, eloszt\u00f3 bet\u00e1pl\u00e1l\u00f3k<\/td>\n<td>Koordin\u00e1l a downstream MCCB-kkel<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>P\u00e9ld\u00e1ul egy 800A-es ACB I<sub>cw<\/sub> = 85kA\/1s \u00e9rt\u00e9kkel ak\u00e1r 1 m\u00e1sodpercig is k\u00e9pes elviselni a 85kA hiba\u00e1ramot, mik\u00f6zben a r\u00f6vididej\u0171 k\u00e9sleltet\u0151 rel\u00e9 \u201cv\u00e1rja\u201d, hogy a downstream eszk\u00f6z\u00f6k megsz\u00fcntess\u00e9k a hib\u00e1t. Ez a k\u00e9pess\u00e9g robusztus mechanikai konstrukci\u00f3t ig\u00e9nyel \u2013 meger\u0151s\u00edtett kontaktuskarokat, magas kontaktusnyom\u00e1st (megakad\u00e1lyozva az elektrom\u00e1gneses tasz\u00edt\u00e1st) \u00e9s h\u0151tehetetlens\u00e9get az I<sup>2<\/sup>t energia elnyel\u00e9s\u00e9hez.<\/p>\n<h3>A kateg\u00f3ria: MCCB-k deklar\u00e1lt I<sub>cw<\/sub><\/h3>\n<p>n\u00e9lk\u00fcl A tokozott megszak\u00edt\u00f3k (MCCB) jellemz\u0151en a k\u00f6vetkez\u0151 al\u00e1 tartoznak: <strong>A kateg\u00f3ria<\/strong>\u2013 olyan eszk\u00f6z\u00f6k, amelyek \u201cnem kifejezetten r\u00f6vidz\u00e1rlati k\u00f6r\u00fclm\u00e9nyek k\u00f6z\u00f6tti szelektivit\u00e1sra szolg\u00e1lnak\u201d az IEC 60947-2 szerint. Ezek a megszak\u00edt\u00f3k nem deklar\u00e1lnak I<sub>cw<\/sub> \u00e9rt\u00e9keket, mert tervez\u00e9si filoz\u00f3fi\u00e1juk a <strong>gyors hibamegszak\u00edt\u00e1st<\/strong> helyezi el\u0151t\u00e9rbe a hosszan tart\u00f3 hibaelvisel\u00e9ssel szemben.<\/p>\n<p><strong>Mi\u00e9rt nem deklar\u00e1lnak az MCCB-k I<sub>cw<\/sub>:<\/strong><\/p>\n<ol>\n<li><strong>\u00e9rt\u00e9ket?<\/strong>\u00c1ramkorl\u00e1toz\u00f3 tervez\u00e9s<sub>n<\/sub><\/li>\n<li><strong>\u00e9rt\u00e9ket.<\/strong>Azonnali kiold\u00e1s k\u00f6telezetts\u00e9ge<\/li>\n<li><strong>: A legt\u00f6bb MCCB nem tudja letiltani az azonnali v\u00e9delmet \u2013 minden, az azonnali k\u00fcsz\u00f6b\u00f6t meghalad\u00f3 hiba azonnali kiold\u00e1st v\u00e1lt ki.<\/strong>Termikus korl\u00e1tok<sup>2<\/sup>: A kompakt tokozott konstrukci\u00f3 nem k\u00e9pes elvezetni a hosszan tart\u00f3 nagy\u00e1ram\u00fa \u00e1ram\u00e1ll\u00f3s\u00e1ggal j\u00e1r\u00f3 h\u0151energi\u00e1t (I<\/li>\n<\/ol>\n<p>t). <strong>nem<\/strong> Azonban ez nem.<\/p>\n<hr \/>\n<h2>Az MCCB kontaktus tasz\u00edt\u00e1s fizik\u00e1ja<\/h2>\n<figure style=\"text-align: center; margin: 20px 0;\"><img decoding=\"async\" style=\"max-width: 100%; height: auto;\" src=\"https:\/\/img.viox.com\/MCCB-electromagnetic-contact-repulsion-mechanism-diagram-showing-force-balance-and-current-thresholds.webp\" alt=\"MCCB electromagnetic contact repulsion mechanism diagram showing force balance and current thresholds - VIOX Electric\" \/><figcaption style=\"font-style: italic; color: #555; margin-top: 8px;\">MCCB elektrom\u00e1gneses kontaktus tasz\u00edt\u00e1si mechanizmus diagram, amely az er\u0151egyens\u00falyt \u00e9s az \u00e1ramk\u00fcsz\u00f6b\u00f6ket mutatja \u2013 VIOX Electric<\/figcaption><\/figure>\n<h3>Elektrom\u00e1gneses tasz\u00edt\u00e1si k\u00fcsz\u00f6b<\/h3>\n<p>Amikor hiba\u00e1ram folyik az MCCB p\u00e1rhuzamos kontaktus\u00fatjain, ellent\u00e9tes m\u00e1gneses mez\u0151ket gener\u00e1l, amelyek <strong>elektrodinamikus tasz\u00edt\u00f3er\u0151k<\/strong> (Lorentz-er\u0151). A kontaktrug\u00f3nak ellent kell \u00e1llnia ennek az er\u0151nek, hogy a kontaktusok z\u00e1rva maradjanak.<\/p>\n<p><strong>Er\u0151egyens\u00faly egyenlet:<\/strong><\/p>\n<p style=\"text-align: center; background-color: #f9f9f9; padding: 10px; border-radius: 4px;\">F<sub>rug\u00f3<\/sub> &gt; F<sub>tasz\u00edt\u00e1s<\/sub> = k \u00b7 I<sup>2<\/sup><\/p>\n<p>Hol:<\/p>\n<ul>\n<li>F<sub>rug\u00f3<\/sub> = A kontaktrug\u00f3 \u00f6sszenyom\u00f3 ereje<\/li>\n<li>F<sub>tasz\u00edt\u00e1s<\/sub> = Elektrom\u00e1gneses tasz\u00edt\u00f3er\u0151 (ar\u00e1nyos az I<sup>2<\/sup>)<\/li>\n<li>k = Geometriai \u00e1lland\u00f3 (kontaktust\u00e1vols\u00e1g, vezet\u0151 konfigur\u00e1ci\u00f3)<\/li>\n<\/ul>\n<table style=\"border-collapse: collapse; width: 100%; margin: 20px 0;\" border=\"1\" cellpadding=\"10\">\n<thead>\n<tr style=\"background-color: #f2f2f2;\">\n<th>MCCB tervez\u00e9si param\u00e9ter<\/th>\n<th>A kateg\u00f3ria (MCCB)<\/th>\n<th>B kateg\u00f3ria (ACB)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>Kontaktrug\u00f3 nyom\u00e1sa<\/strong><\/td>\n<td>Alacsony (2-5 N\/mm)<\/td>\n<td>Magas (10-20 N\/mm)<\/td>\n<\/tr>\n<tr>\n<td><strong>Tasz\u00edt\u00e1si k\u00fcsz\u00f6b<\/strong><\/td>\n<td>12-14\u00d7 I<sub>n<\/sub><\/td>\n<td>&gt;50\u00d7 I<sub>n<\/sub><\/td>\n<\/tr>\n<tr>\n<td><strong>Kontaktus nyit\u00e1si sebess\u00e9ge<\/strong><\/td>\n<td>3-7 ms (ultragyors)<\/td>\n<td>20-50 ms (szab\u00e1lyozott)<\/td>\n<\/tr>\n<tr>\n<td><strong>Tervez\u00e9si Priorit\u00e1s<\/strong><\/td>\n<td>Korl\u00e1tozza a hibaenergi\u00e1t (I<sup>2<\/sup>t)<\/td>\n<td>Ellen\u00e1ll a hiba id\u0151tartam\u00e1nak<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Motorind\u00edt\u00e1si szempontok<\/h3>\n<p>A Shanghai Electrical Research Institute 52 motor mint\u00e1n v\u00e9gzett kutat\u00e1sa felt\u00e1rta, hogy a k\u00f6zvetlen ind\u00edt\u00e1s (DOL) els\u0151 cs\u00facs bekapcsol\u00e1si \u00e1ramot produk\u00e1l <strong>8-12\u00d7 I<sub>n<\/sub><\/strong> a legt\u00f6bb motorn\u00e1l, a kiugr\u00f3 \u00e9rt\u00e9kek el\u00e9rik a 13\u00d7 I<sub>n<\/sub>.<\/p>\n<p><strong>Ezek az adatok vez\u00e9rlik az MCCB tervez\u00e9si korl\u00e1toz\u00e1sait:<\/strong><\/p>\n<ul>\n<li><strong>Eloszt\u00f3 MCCB-k<\/strong>: Azonnali kiold\u00e1s 10-12\u00d7 I<sub>n<\/sub> \u00e9rt\u00e9kre \u00e1ll\u00edtva (nem szabad kioldania a kondenz\u00e1tor bekapcsol\u00e1sakor vagy a transzform\u00e1tor fesz\u00fclts\u00e9g al\u00e1 helyez\u00e9sekor)<\/li>\n<li><strong>Motor n\u00e9vleges MCCB-k<\/strong>: Azonnali kiold\u00e1s 13-14\u00d7 I<sub>n<\/sub> \u00e9rt\u00e9kre \u00e1ll\u00edtva (\u00e1t kell mennie a DOL ind\u00edt\u00e1son)<\/li>\n<li><strong>Kontaktus tasz\u00edt\u00e1si k\u00fcsz\u00f6b<\/strong>: 15-20%-kal meg kell haladnia az azonnali kiold\u00e1si be\u00e1ll\u00edt\u00e1st, hogy megakad\u00e1lyozza a zavar\u00f3 kontaktusnyit\u00e1st az ind\u00edt\u00e1si tranziens sor\u00e1n<\/li>\n<\/ul>\n<p><strong>P\u00e9lda sz\u00e1m\u00edt\u00e1s egy 100A-es motor n\u00e9vleges MCCB-hez:<\/strong><\/p>\n<div style=\"background-color: #f5f5f5; padding: 15px; border-radius: 5px; margin: 15px 0; font-family: monospace;\">Azonnali kiold\u00e1si be\u00e1ll\u00edt\u00e1s: 13 \u00d7 100A = 1300A<br \/>\nKontaktus tasz\u00edt\u00e1si k\u00fcsz\u00f6b: 1300A \u00d7 1,2 = 1560A (tervez\u00e9si c\u00e9l)<br \/>\nNem deklar\u00e1lt \u201cIcw\u201d k\u00e9pess\u00e9g: ~1500A (a tasz\u00edt\u00e1si k\u00fcsz\u00f6b alatt)<\/div>\n<p>Ez az 1500A-es k\u00fcsz\u00f6b\u00e9rt\u00e9k az MCCB inherens r\u00f6vidz\u00e1rlati ellen\u00e1ll\u00e1si k\u00e9pess\u00e9g\u00e9t k\u00e9pviseli \u2013 elegend\u0151 a downstream eszk\u00f6z\u00f6kkel val\u00f3 koordin\u00e1ci\u00f3hoz az 1000-1500A-es hibatartom\u00e1nyban, de messze alatta van az ACB-k deklar\u00e1lt I<sub>cw<\/sub> \u00e9rt\u00e9keinek (\u00e1ltal\u00e1ban 30-85kA).<\/p>\n<hr \/>\n<h2>Hogyan m\u0171k\u00f6dik val\u00f3j\u00e1ban az MCCB r\u00f6vidz\u00e1rlati k\u00e9sleltet\u00e9se<\/h2>\n<figure style=\"text-align: center; margin: 20px 0;\"><img decoding=\"async\" style=\"max-width: 100%; height: auto;\" src=\"https:\/\/img.viox.com\/Technical-infographic-clean-202601280514.webp\" alt=\"MCCB three-zone protection logic diagram showing overload, short-time delay, and instantaneous trip thresholds - VIOX Electric\" \/><figcaption style=\"font-style: italic; color: #555; margin-top: 8px;\">MCCB h\u00e1romz\u00f3n\u00e1s v\u00e9delmi logikai diagram, amely bemutatja a t\u00falterhel\u00e9st, a r\u00f6vidz\u00e1rlati k\u00e9sleltet\u00e9st \u00e9s az azonnali kiold\u00e1si k\u00fcsz\u00f6b\u00f6ket \u2013 VIOX Electric<\/figcaption><\/figure>\n<h3>A h\u00e1rom m\u0171k\u00f6d\u00e9si z\u00f3na<\/h3>\n<p>A modern elektronikus kiold\u00e1s\u00fa MCCB-k h\u00e1rom v\u00e9delmi z\u00f3n\u00e1val rendelkeznek, de k\u00f6lcs\u00f6nhat\u00e1suk alapvet\u0151en elt\u00e9r az ACB-kt\u0151l:<\/p>\n<table style=\"border-collapse: collapse; width: 100%; margin: 20px 0;\" border=\"1\" cellpadding=\"10\">\n<thead>\n<tr style=\"background-color: #f2f2f2;\">\n<th>V\u00e9delmi z\u00f3na<\/th>\n<th>Be\u00e1ll\u00edt\u00e1si tartom\u00e1ny<\/th>\n<th>T\u00e9nyleges viselked\u00e9s<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>Hossz\u00fa idej\u0171 (t\u00falterhel\u00e9s)<\/strong><\/td>\n<td>0,4-1,0\u00d7 I<sub>n<\/sub>, 3-30s<\/td>\n<td>H\u0151v\u00e9delem I<sup>2<\/sup>t sz\u00e1m\u00edt\u00e1ssal<\/td>\n<\/tr>\n<tr>\n<td><strong>R\u00f6vid idej\u0171 k\u00e9sleltet\u00e9s<\/strong><\/td>\n<td>2-12\u00d7 I<sub>n<\/sub>, 0,1-0,5s<\/td>\n<td><strong>Csak az azonnali k\u00fcsz\u00f6b alatt akt\u00edv<\/strong><\/td>\n<\/tr>\n<tr>\n<td><strong>Pillanatnyi<\/strong><\/td>\n<td>10-14\u00d7 I<sub>n<\/sub> (fix vagy \u00e1ll\u00edthat\u00f3)<\/td>\n<td><strong>A legt\u00f6bb MCCB-ben nem lehet letiltani<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>1. forgat\u00f3k\u00f6nyv: A hiba\u00e1ram az azonnali k\u00fcsz\u00f6b alatt van<\/h3>\n<p><strong>Felt\u00e9telek<\/strong>: Hiba\u00e1ram = 8\u00d7 I<sub>n<\/sub> (800A egy 100A-es megszak\u00edt\u00f3hoz)<\/p>\n<ol>\n<li>Az \u00e1ram meghaladja a hossz\u00fa idej\u0171 z\u00f3n\u00e1t \u2192 A r\u00f6vidz\u00e1rlati k\u00e9sleltet\u00e9s aktiv\u00e1l\u00f3dik<\/li>\n<li>Az elektronikus kiold\u00f3egys\u00e9g visszasz\u00e1ml\u00e1l\u00e1st ind\u00edt (pl. 0,4 s)<\/li>\n<li>Ha a hiba tov\u00e1bbra is fenn\u00e1ll, a kiold\u00f3tekercs k\u00e9sleltet\u00e9s ut\u00e1n fesz\u00fclts\u00e9g al\u00e1 ker\u00fcl<\/li>\n<li>Az \u00e9rintkez\u0151k t\u00e1rolt energi\u00e1j\u00fa mechanizmussal ny\u00edlnak (~20-30 ms nyit\u00e1si id\u0151)<\/li>\n<\/ol>\n<p><strong>Eredm\u00e9ny<\/strong>: Val\u00f3di id\u0151z\u00edtett koordin\u00e1ci\u00f3 a lejjebb l\u00e9v\u0151 eszk\u00f6z\u00f6kkel<\/p>\n<h3>2. forgat\u00f3k\u00f6nyv: A hiba\u00e1ram meghaladja a pillanatnyi k\u00fcsz\u00f6b\u00e9rt\u00e9ket<\/h3>\n<p><strong>Felt\u00e9telek<\/strong>: Hiba\u00e1ram = 15\u00d7 I<sub>n<\/sub> (1500A egy 100A-es megszak\u00edt\u00f3hoz)<\/p>\n<ol>\n<li>Az \u00e1ram meghaladja a pillanatnyi k\u00fcsz\u00f6b\u00e9rt\u00e9ket \u2192 A m\u00e1gneses kiold\u00e1s azonnal m\u0171k\u00f6d\u00e9sbe l\u00e9p<\/li>\n<li>A r\u00f6vidz\u00e1rlati k\u00e9sleltet\u00e9s be\u00e1ll\u00edt\u00e1sa <strong>ki van ker\u00fclve<\/strong><\/li>\n<li>A kiold\u00f3tekercs 5-10 ms-on bel\u00fcl fesz\u00fclts\u00e9g al\u00e1 ker\u00fcl<\/li>\n<li>Az \u00e9rintkez\u0151k kiny\u00edlnak, de a hiba\u00e1ram m\u00e1r okozhatott elektrom\u00e1gneses tasz\u00edt\u00e1st<\/li>\n<\/ol>\n<p><strong>Eredm\u00e9ny<\/strong>: Nincs sz\u00e1nd\u00e9kos k\u00e9sleltet\u00e9s \u2013 az MCCB a lehet\u0151 leggyorsabban kiold<\/p>\n<h3>3. forgat\u00f3k\u00f6nyv: A hiba\u00e1ram messze meghaladja a tasz\u00edt\u00e1si k\u00fcsz\u00f6b\u00f6t<\/h3>\n<p><strong>Felt\u00e9telek<\/strong>: Hiba\u00e1ram = 50\u00d7 I<sub>n<\/sub> (5000A egy 100A-es megszak\u00edt\u00f3hoz, megk\u00f6zel\u00edtve az I<sub>cu<\/sub>)<\/p>\n<ol>\n<li>Az elektrom\u00e1gneses tasz\u00edt\u00f3er\u0151 meghaladja a rug\u00f3nyom\u00e1st<\/li>\n<li>Az \u00e9rintkez\u0151k 3-7 ms-on bel\u00fcl sz\u00e9tv\u00e1lnak (gyorsabban, mint a kiold\u00f3 mechanizmus)<\/li>\n<li>Az \u00edvfesz\u00fclts\u00e9g gyorsan emelkedik, korl\u00e1tozva a cs\u00facs\u00e1ramot (\u00e1ramkorl\u00e1toz\u00f3 hat\u00e1s)<\/li>\n<li>Az \u00edvenergia beind\u00edthatja a kiold\u00f3 mechanizmust, vagy a megszak\u00edt\u00f3 kiz\u00e1r\u00f3lag az \u00edvolt\u00e1sra t\u00e1maszkodik<\/li>\n<\/ol>\n<p><strong>Eredm\u00e9ny<\/strong>: Ultragyors \u00e1ramkorl\u00e1toz\u00e1s \u2013 nincs koordin\u00e1ci\u00f3, de berendez\u00e9sv\u00e9delem az I<sup>2<\/sup>t cs\u00f6kkent\u00e9s r\u00e9v\u00e9n<\/p>\n<hr \/>\n<h2>Speci\u00e1lis eset: MCCB-k kikapcsolhat\u00f3 pillanatnyi kiold\u00e1ssal<\/h2>\n<h3>Schneider NSX \u201cEnergy Trip\u201d mechanizmus<\/h3>\n<p>Egyes cs\u00facskateg\u00f3ri\u00e1s MCCB-k (pl. Schneider Electric NSX Micrologic kiold\u00f3egys\u00e9gekkel) lehet\u0151v\u00e9 teszik a pillanatnyi v\u00e9delem letilt\u00e1s\u00e1t a jobb szelektivit\u00e1s \u00e9rdek\u00e9ben. Ezek az eszk\u00f6z\u00f6k azonban tartalmaznak egy <strong>k\u00f6telez\u0151 biztons\u00e1gi fel\u00fcl\u00edr\u00e1st<\/strong> \u201cenergy trip\u201d vagy \u201cpillanatnyi fel\u00fcl\u00edr\u00e1s\u201d n\u00e9ven.\u201d<\/p>\n<p><strong>Hogyan m\u0171k\u00f6dik:<\/strong><\/p>\n<ol>\n<li>A felhaszn\u00e1l\u00f3 letiltja a pillanatnyi kiold\u00e1st, enged\u00e9lyezi a r\u00f6vidz\u00e1rlati k\u00e9sleltet\u00e9st (pl. 10\u00d7 I<sub>n<\/sub>, 0,4s)<\/li>\n<li>A hiba\u00e1ram el\u00e9ri a 30\u00d7 I<sub>n<\/sub> (3000A egy 100A-es megszak\u00edt\u00f3hoz)<\/li>\n<li>Az \u00e9rintkez\u0151k tasz\u00edtj\u00e1k, \u00edv k\u00e9pz\u0151dik<\/li>\n<li>Az \u00edvenergia ioniz\u00e1lja a g\u00e1zt termel\u0151 anyagot az \u00edvkamr\u00e1ban<\/li>\n<li>A nyom\u00e1sn\u00f6veked\u00e9s 10-15 ms-on bel\u00fcl m\u0171k\u00f6d\u00e9sbe hozza a pneumatikus kiold\u00f3 mechanizmust<\/li>\n<li>A megszak\u00edt\u00f3 kiold <strong>az elektronikus kiold\u00f3egys\u00e9g be\u00e1ll\u00edt\u00e1sait\u00f3l f\u00fcggetlen\u00fcl<\/strong><\/li>\n<\/ol>\n<table style=\"border-collapse: collapse; width: 100%; margin: 20px 0;\" border=\"1\" cellpadding=\"10\">\n<thead>\n<tr style=\"background-color: #f2f2f2;\">\n<th>Hiba\u00e1ram szintje<\/th>\n<th>NSX v\u00e1lasz<\/th>\n<th>Standard MCCB v\u00e1lasz<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>8\u00d7 I<sub>n<\/sub><\/strong><\/td>\n<td>A r\u00f6vidz\u00e1rlati k\u00e9sleltet\u00e9s norm\u00e1lisan m\u0171k\u00f6dik<\/td>\n<td>A r\u00f6vidz\u00e1rlati k\u00e9sleltet\u00e9s m\u0171k\u00f6dik<\/td>\n<\/tr>\n<tr>\n<td><strong>15\u00d7 I<sub>n<\/sub><\/strong><\/td>\n<td>A r\u00f6vidz\u00e1rlati k\u00e9sleltet\u00e9s m\u0171k\u00f6dik (pill. letiltva)<\/td>\n<td>Pillanatnyi kiold\u00e1s (nem lehet letiltani)<\/td>\n<\/tr>\n<tr>\n<td><strong>&gt;25\u00d7 I<sub>n<\/sub><\/strong><\/td>\n<td>Az energy trip fel\u00fcl\u00edrja a k\u00e9sleltet\u00e9st<\/td>\n<td>\u00c9rintkez\u0151 tasz\u00edt\u00e1s + pillanatnyi kiold\u00e1s<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Ez a kialak\u00edt\u00e1s megakad\u00e1lyozza a katasztrof\u00e1lis meghib\u00e1sod\u00e1st, ha a felhaszn\u00e1l\u00f3k helytelen\u00fcl konfigur\u00e1lj\u00e1k a v\u00e9delmi be\u00e1ll\u00edt\u00e1sokat \u2013 az MCCB mindig megv\u00e9di mag\u00e1t extr\u00e9m hiba\u00e1ramszinteken, m\u00e9g akkor is, ha ez rontja a szelektivit\u00e1st.<\/p>\n<hr \/>\n<h2>Gyakorlati koordin\u00e1ci\u00f3s strat\u00e9gi\u00e1k<\/h2>\n<figure style=\"text-align: center; margin: 20px 0;\"><img decoding=\"async\" style=\"max-width: 100%; height: auto;\" src=\"https:\/\/img.viox.com\/Time-current-coordination-diagram-showing-ACB-and-MCCB-selectivity-zones-with-fault-scenario-analysis.webp\" alt=\"Time-current coordination diagram showing ACB and MCCB selectivity zones with fault scenario analysis - VIOX Electric\" \/><figcaption style=\"font-style: italic; color: #555; margin-top: 8px;\">Id\u0151-\u00e1ram koordin\u00e1ci\u00f3s diagram, amely bemutatja az ACB \u00e9s MCCB szelektivit\u00e1si z\u00f3n\u00e1it hibaforgat\u00f3k\u00f6nyv-elemz\u00e9ssel \u2013 VIOX Electric<\/figcaption><\/figure>\n<h3>1. strat\u00e9gia: ACB-MCCB kaszk\u00e1d (aj\u00e1nlott)<\/h3>\n<p><strong>Konfigur\u00e1ci\u00f3:<\/strong><\/p>\n<ul>\n<li><strong>F\u0151<\/strong>: 1600A ACB, I<sub>cw<\/sub> = 65kA\/0,5s, r\u00f6vidz\u00e1rlati k\u00e9sleltet\u00e9s = 0,4s<\/li>\n<li><strong>Le\u00e1gaz\u00f3<\/strong>: 400A MCCB, I<sub>cu<\/sub> = 50kA, pillanatnyi = 5000A (12,5\u00d7 I<sub>n<\/sub>)<\/li>\n<\/ul>\n<p><strong>Koordin\u00e1ci\u00f3s elemz\u00e9s:<\/strong><\/p>\n<table style=\"border-collapse: collapse; width: 100%; margin: 20px 0;\" border=\"1\" cellpadding=\"10\">\n<thead>\n<tr style=\"background-color: #f2f2f2;\">\n<th>Hiba helye<\/th>\n<th>Hiba\u00e1ram<\/th>\n<th>Felfel\u00e9 l\u00e9v\u0151 ACB m\u0171velet<\/th>\n<th>Lefel\u00e9 l\u00e9v\u0151 MCCB m\u0171velet<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>Lefel\u00e9 l\u00e9v\u0151 bet\u00e1pl\u00e1l\u00e1s<\/strong><\/td>\n<td>8 kA<\/td>\n<td>V\u00e1r 0,4 s-ot (az I<sub>cw<\/sub>)<\/td>\n<td>Azonnal kiold (&gt;12,5\u00d7 I<sub>n<\/sub>)<\/td>\n<\/tr>\n<tr>\n<td><strong>Lefel\u00e9 l\u00e9v\u0151 bet\u00e1pl\u00e1l\u00e1s<\/strong><\/td>\n<td>45 kA<\/td>\n<td>V\u00e1r 0,4 s-ot (az I<sub>cw<\/sub>)<\/td>\n<td>Azonnali kiold\u00e1s (\u00e1ramkorl\u00e1toz\u00f3)<\/td>\n<\/tr>\n<tr>\n<td><strong>F\u0151 gy\u0171jt\u0151s\u00edn<\/strong><\/td>\n<td>60 kA<\/td>\n<td>Kiold\u00e1s 0,4 m\u00e1sodperc ut\u00e1n<\/td>\n<td>Nem befoly\u00e1solja<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>Eredm\u00e9ny<\/strong>: Teljes szelektivit\u00e1s 50 kA-ig (MCCB I<sub>cu<\/sub> limit)<\/p>\n<h3>2. strat\u00e9gia: MCCB-MCCB koordin\u00e1ci\u00f3 (korl\u00e1tozott)<\/h3>\n<p><strong>Konfigur\u00e1ci\u00f3:<\/strong><\/p>\n<ul>\n<li><strong>F\u0151<\/strong>: 400A MCCB, pillanatnyi = 5000A (12,5\u00d7 I<sub>n<\/sub>)<\/li>\n<li><strong>Le\u00e1gaz\u00f3<\/strong>: 100A MCCB, pillanatnyi = 1300A (13\u00d7 I<sub>n<\/sub>)<\/li>\n<\/ul>\n<p><strong>Koordin\u00e1ci\u00f3s elemz\u00e9s:<\/strong><\/p>\n<table style=\"border-collapse: collapse; width: 100%; margin: 20px 0;\" border=\"1\" cellpadding=\"10\">\n<thead>\n<tr style=\"background-color: #f2f2f2;\">\n<th>Hiba\u00e1ram<\/th>\n<th>Felfel\u00e9 \u00e1ram\u00fa MCCB<\/th>\n<th>Lefel\u00e9 \u00e1ram\u00fa MCCB<\/th>\n<th>Szelektivit\u00e1s?<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>1500A<\/strong><\/td>\n<td>R\u00f6vid k\u00e9sleltet\u00e9s (0,3s)<\/td>\n<td>Azonnali lekapcsol\u00e1s<\/td>\n<td>\u2705 Igen<\/td>\n<\/tr>\n<tr>\n<td><strong>4000A<\/strong><\/td>\n<td>R\u00f6vid k\u00e9sleltet\u00e9s (0,3s)<\/td>\n<td>Azonnali lekapcsol\u00e1s<\/td>\n<td>\u2705 Igen<\/td>\n<\/tr>\n<tr>\n<td><strong>6000A<\/strong><\/td>\n<td><strong>Azonnali lekapcsol\u00e1s<\/strong><\/td>\n<td>Azonnali lekapcsol\u00e1s<\/td>\n<td>\u274c Nem (mindkett\u0151 kiold)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>Szelektivit\u00e1si hat\u00e1r<\/strong>: ~4500A (a felfel\u00e9 \u00e1ram\u00fa pillanatnyi be\u00e1ll\u00edt\u00e1s 90%-je)<\/p>\n<p><strong>Fejleszt\u00e9s<\/strong>: A t\u00e9nyleges \u00e1tengedett energia ellen\u0151rz\u00e9s\u00e9hez haszn\u00e1lja a gy\u00e1rt\u00f3 koordin\u00e1ci\u00f3s t\u00e1bl\u00e1zatait \u2013 az \u00e1ramkorl\u00e1toz\u00f3 MCCB-k magasabb hiba\u00e1ramszinteken is el\u00e9rhetnek szelektivit\u00e1st az I<sup>2<\/sup>t diszkrimin\u00e1ci\u00f3 r\u00e9v\u00e9n.<\/p>\n<hr \/>\n<h2>\u00d6sszehasonl\u00edt\u00f3 t\u00e1bl\u00e1zat: ACB vs. MCCB r\u00f6vid idej\u0171 jellemz\u0151k<\/h2>\n<table style=\"border-collapse: collapse; width: 100%; margin: 20px 0;\" border=\"1\" cellpadding=\"10\">\n<thead>\n<tr style=\"background-color: #f2f2f2;\">\n<th>Jellemz\u0151<\/th>\n<th>ACB (B kateg\u00f3ria)<\/th>\n<th>MCCB (A kateg\u00f3ria)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>I<sub>cw<\/sub> Nyilatkozat<\/strong><\/td>\n<td>\u2705 Igen (30-85 kA, 0,05-1,0s)<\/td>\n<td>\u274c Nem (nem deklar\u00e1lt)<\/td>\n<\/tr>\n<tr>\n<td><strong>Be\u00e9p\u00edtett ellen\u00e1ll\u00e1s<\/strong><\/td>\n<td>Nagyon magas (&gt;50\u00d7 I<sub>n<\/sub>)<\/td>\n<td>Korl\u00e1tozott (12-14\u00d7 I<sub>n<\/sub>)<\/td>\n<\/tr>\n<tr>\n<td><strong>Kontaktrug\u00f3 nyom\u00e1sa<\/strong><\/td>\n<td>Magas (megakad\u00e1lyozza a tasz\u00edt\u00e1st)<\/td>\n<td>Alacsony (lehet\u0151v\u00e9 teszi az \u00e1ramkorl\u00e1toz\u00e1st)<\/td>\n<\/tr>\n<tr>\n<td><strong>Pillanatnyi kiold\u00e1s<\/strong><\/td>\n<td>Kikapcsolhat\u00f3<\/td>\n<td>\u00c1ltal\u00e1ban r\u00f6gz\u00edtett (nem kapcsolhat\u00f3 ki)<\/td>\n<\/tr>\n<tr>\n<td><strong>R\u00f6vid idej\u0171 k\u00e9sleltet\u00e9si tartom\u00e1ny<\/strong><\/td>\n<td>0,05-1,0s (\u00e1ll\u00edthat\u00f3)<\/td>\n<td>0,1-0,5s (csak a pillanatnyi k\u00fcsz\u00f6b alatt)<\/td>\n<\/tr>\n<tr>\n<td><strong>Koordin\u00e1ci\u00f3s m\u00f3dszer<\/strong><\/td>\n<td>Id\u0151alap\u00fa (val\u00f3di k\u00e9sleltet\u00e9s)<\/td>\n<td>\u00c1ramalap\u00fa (korl\u00e1toz\u00e1s + k\u00e9sleltet\u00e9s)<\/td>\n<\/tr>\n<tr>\n<td><strong>Tipikus Alkalmaz\u00e1s<\/strong><\/td>\n<td>F\u0151 bet\u00e1p (1000-6300A)<\/td>\n<td>Bet\u00e1pl\u00e1l\u00e1si v\u00e9delem (16-1600A)<\/td>\n<\/tr>\n<tr>\n<td><strong>Szelektivit\u00e1s a lefel\u00e9 \u00e1ram\u00faval<\/strong><\/td>\n<td>Teljes (I<sub>cw<\/sub>)<\/td>\n<td>R\u00e9szleges (a pillanatnyi k\u00fcsz\u00f6big)<\/td>\n<\/tr>\n<tr>\n<td><strong>\u00d6nv\u00e9delmi mechanizmus<\/strong><\/td>\n<td>H\u0151t\u00f6meg + mechanikai szil\u00e1rds\u00e1g<\/td>\n<td>\u00c9rintkez\u0151 tasz\u00edt\u00e1s + \u00edvkorl\u00e1toz\u00e1s<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr \/>\n<h2>Mi\u00e9rt fontos ez a rendszertervez\u00e9s szempontj\u00e1b\u00f3l<\/h2>\n<h3>1. t\u00e9vhit: \u201cAz MCCB r\u00f6vid k\u00e9sleltet\u00e9se = az ACB r\u00f6vid k\u00e9sleltet\u00e9se\u201d<\/h3>\n<p><strong>A val\u00f3s\u00e1g<\/strong>: Az MCCB r\u00f6vid k\u00e9sleltet\u00e9se csak egy sz\u0171k \u00e1ramablakon bel\u00fcl m\u0171k\u00f6dik (a hossz\u00fa idej\u0171 \u00e9s a pillanatnyi k\u00fcsz\u00f6b\u00f6k k\u00f6z\u00f6tt). A pillanatnyi be\u00e1ll\u00edt\u00e1sokat meghalad\u00f3 hib\u00e1k eset\u00e9n az MCCB-k azonnal kioldanak \u2013 nincs k\u00e9sleltet\u00e9s.<\/p>\n<p><strong>Tervez\u00e9si hat\u00e1s<\/strong>: Az MCCB v\u00e9delem specifik\u00e1l\u00e1sakor mindig ellen\u0151rizze:<\/p>\n<ol>\n<li>A lefel\u00e9 \u00e1ram\u00fa eszk\u00f6z pillanatnyi be\u00e1ll\u00edt\u00e1sait<\/li>\n<li>A maxim\u00e1lis hiba\u00e1ramot a koordin\u00e1ci\u00f3s ponton<\/li>\n<li>Hogy a hiba\u00e1ram meghaladja-e a felfel\u00e9 \u00e1ram\u00fa MCCB pillanatnyi k\u00fcsz\u00f6b\u00e9t<\/li>\n<\/ol>\n<h3>2. t\u00e9vhit: \u201cNincs I<sub>cw<\/sub> n\u00e9vleges \u00e1ram = nincs r\u00f6vid idej\u0171 k\u00e9pess\u00e9g\u201d<\/h3>\n<p><strong>A val\u00f3s\u00e1g<\/strong>: Az MCCB-k be\u00e9p\u00edtett r\u00f6vid idej\u0171 ellen\u00e1ll\u00e1ssal rendelkeznek az \u00e9rintkez\u0151 tasz\u00edt\u00e1si k\u00fcsz\u00f6b\u00e9ig (~12-14\u00d7 I<sub>n<\/sub>). Ez a k\u00e9pess\u00e9g lehet\u0151v\u00e9 teszi a korl\u00e1tozott koordin\u00e1ci\u00f3t a lefel\u00e9 \u00e1ram\u00fa eszk\u00f6z\u00f6kkel, b\u00e1r nem olyan m\u00e9rt\u00e9kben, mint az ACB-k.<\/p>\n<p><strong>Tervez\u00e9si hat\u00e1s<\/strong>: Az MCCB-MCCB koordin\u00e1ci\u00f3 lehets\u00e9ges, de a k\u00f6vetkez\u0151ket ig\u00e9nyli:<\/p>\n<ul>\n<li>\u00d3vatos pillanatnyi be\u00e1ll\u00edt\u00e1si elv\u00e1laszt\u00e1s (minimum 1,5:1 ar\u00e1ny)<\/li>\n<li>Gy\u00e1rt\u00f3 \u00e1ltal biztos\u00edtott szelektivit\u00e1si t\u00e1bl\u00e1zatok<\/li>\n<li>Az \u00e1ramkorl\u00e1toz\u00f3 hat\u00e1sok figyelembev\u00e9tele az \u00e1tengedett energi\u00e1ra<\/li>\n<\/ul>\n<h3>3. t\u00e9vhit: \u201cA pillanatnyi kiold\u00e1s letilt\u00e1sa egyenl\u0151v\u00e9 teszi az MCCB-t az ACB-vel\u201d<\/h3>\n<p><strong>A val\u00f3s\u00e1g<\/strong>: M\u00e9g a kikapcsolhat\u00f3 pillanatnyi kiold\u00e1ssal rendelkez\u0151 MCCB-k (pl. NSX) is tartalmaznak energiaalap\u00fa fel\u00fclb\u00edr\u00e1l\u00f3 mechanizmusokat, amelyek extr\u00e9m hiba\u00e1ramszinteken (&gt;25\u00d7 I<sub>n<\/sub>) kiold\u00e1st k\u00e9nyszer\u00edtenek ki. Nem tudj\u00e1k \u201ckiv\u00e1rni\u201d a magas hiba\u00e1ramokat, mint az ACB-k.<\/p>\n<p><strong>Tervez\u00e9si hat\u00e1s<\/strong>: \u00c1ll\u00edthat\u00f3 pillanatnyi kiold\u00e1ssal rendelkez\u0151 MCCB-k haszn\u00e1latakor:<\/p>\n<ul>\n<li>Ellen\u0151rizze az energia kiold\u00e1si k\u00fcsz\u00f6b\u00e9rt\u00e9k\u00e9t a gy\u00e1rt\u00f3n\u00e1l<\/li>\n<li>Ne felt\u00e9telezzen ACB-szer\u0171 viselked\u00e9st az I<sub>cu<\/sub><\/li>\n<li>-hez k\u00f6zel\u00edt\u0151 hiba\u00e1ramokn\u00e1l<\/li>\n<\/ul>\n<hr \/>\n<h2>Vegye figyelembe a k\u00e9sleltetett kiold\u00e1s \u00edv\u00e1ram energi\u00e1j\u00e1nak k\u00f6vetkezm\u00e9nyeit<\/h2>\n<p>Bels\u0151 linkek \u00e9s kapcsol\u00f3d\u00f3 forr\u00e1sok<\/p>\n<ul>\n<li><a href=\"https:\/\/test.viox.com\/hu\/electrical-derating-temperature-altitude-grouping-factors\/\"><strong>Elektromos derating: H\u0151m\u00e9rs\u00e9klet, magass\u00e1g \u00e9s csoportos\u00edt\u00e1si t\u00e9nyez\u0151k<\/strong><\/a> A kapcsol\u00f3d\u00f3 v\u00e9delmi koncepci\u00f3k m\u00e9lyebb meg\u00e9rt\u00e9s\u00e9hez tekintse meg ezeket a VIOX m\u0171szaki \u00fatmutat\u00f3kat:<\/li>\n<li><a href=\"https:\/\/test.viox.com\/hu\/ats-circuit-breaker-coordination-guide-icw-selectivity\/\"><strong>\u2013 Ismerje meg, hogyan befoly\u00e1solj\u00e1k a k\u00f6rnyezeti t\u00e9nyez\u0151k a megszak\u00edt\u00f3 \u00e1ram\u00e9rt\u00e9keit \u00e9s koordin\u00e1ci\u00f3j\u00e1t<sub>cw<\/sub> ATS \u00e9s megszak\u00edt\u00f3 koordin\u00e1ci\u00f3s \u00fatmutat\u00f3: I<\/strong><\/a> \u00e9s a szelektivit\u00e1s magyar\u00e1zata<\/li>\n<li><a href=\"https:\/\/test.viox.com\/hu\/current-limiting-circuit-breaker-guide\/\"><strong>\u00c1ramkorl\u00e1toz\u00f3 megszak\u00edt\u00f3 \u00fatmutat\u00f3: V\u00e9delem \u00e9s m\u0171szaki adatok<\/strong><\/a> \u2013 Az A \u00e9s B kateg\u00f3ri\u00e1j\u00fa koordin\u00e1ci\u00f3 r\u00e9szletes elemz\u00e9se automatikus \u00e1tkapcsol\u00f3 alkalmaz\u00e1sokban<sup>2<\/sup>\u2013 M\u00e9lyrehat\u00f3 elemz\u00e9s az elektrom\u00e1gneses tasz\u00edt\u00e1s fizik\u00e1j\u00e1r\u00f3l \u00e9s az I<\/li>\n<li><a href=\"https:\/\/test.viox.com\/hu\/types-of-circuit-breakers\/\"><strong>Megszak\u00edt\u00f3k t\u00edpusai: Teljes oszt\u00e1lyoz\u00e1si \u00fatmutat\u00f3<\/strong><\/a> t korl\u00e1toz\u00e1sr\u00f3l<\/li>\n<li><a href=\"https:\/\/test.viox.com\/hu\/commercial-ev-charging-protection-guide-acb-mccb-rcbo\/\"><strong>\u2013 Az ACB, MCCB, MCB k\u00fcl\u00f6nbs\u00e9geinek \u00e9s alkalmaz\u00e1sainak \u00e1tfog\u00f3 \u00e1ttekint\u00e9se<\/strong><\/a> Kereskedelmi EV t\u00f6lt\u00e9sv\u00e9delmi \u00fatmutat\u00f3: ACB, MCCB \u00e9s B t\u00edpus\u00fa RCBO-k<\/li>\n<\/ul>\n<hr \/>\n<h2>\u2013 Val\u00f3s koordin\u00e1ci\u00f3s p\u00e9lda terhel\u00e9ssz\u00e1m\u00edt\u00e1sokkal<\/h2>\n<h3>GYIK: MCCB r\u00f6vidz\u00e1rlati v\u00e9delem<\/h3>\n<p><strong>A<\/strong>K1: Haszn\u00e1lhatok-e MCCB-t f\u0151 bet\u00e1pk\u00e9nt ACB helyett?<sub>cw<\/sub> : Lehets\u00e9ges, de nem aj\u00e1nlott olyan rendszerekhez, amelyek teljes szelektivit\u00e1st ig\u00e9nyelnek. Az MCCB-k nem rendelkeznek deklar\u00e1lt I<sub>n<\/sub>\u00e9rt\u00e9kekkel, ez\u00e9rt nem tudj\u00e1k megb\u00edzhat\u00f3an k\u00e9sleltetni a kiold\u00e1st a downstream koordin\u00e1ci\u00f3hoz magas hiba\u00e1ramokn\u00e1l (&gt;10\u00d7 I.<\/p>\n<h3>). Haszn\u00e1ljon ACB-ket f\u0151 bet\u00e1pk\u00e9nt olyan ipari l\u00e9tes\u00edtm\u00e9nyekben, ahol a szelektivit\u00e1s kritikus, vagy ellen\u0151rizze a koordin\u00e1ci\u00f3s hat\u00e1r\u00e9rt\u00e9keket a gy\u00e1rt\u00f3i t\u00e1bl\u00e1zatokban kereskedelmi alkalmaz\u00e1sokhoz.<sub>n<\/sub>?<\/h3>\n<p><strong>A<\/strong>K2: Mi t\u00f6rt\u00e9nik, ha az MCCB r\u00f6vidz\u00e1rlati k\u00e9sleltet\u00e9s\u00e9t 0,5 m\u00e1sodpercre \u00e1ll\u00edtom, de a hiba\u00e1ram 20\u00d7 I <strong>azonnal<\/strong> ?<sub>n<\/sub>: A megszak\u00edt\u00f3 kiold<sub>n<\/sub>m\u00e1gneses kiold\u00e1ssal, figyelmen k\u00edv\u00fcl hagyva a 0,5 m\u00e1sodperces k\u00e9sleltet\u00e9si be\u00e1ll\u00edt\u00e1st. Az MCCB r\u00f6vidz\u00e1rlati k\u00e9sleltet\u00e9sei csak akkor m\u0171k\u00f6dnek, ha a hiba\u00e1ram a r\u00f6vidz\u00e1rlati felv\u00e9tel (pl. 2-10\u00d7 I.<\/p>\n<h3>) \u00e9s a pillanatnyi k\u00fcsz\u00f6b\u00e9rt\u00e9k (pl. 12\u00d7 I<\/h3>\n<p><strong>A<\/strong>) k\u00f6z\u00f6tt marad. A pillanatnyi \u00e9rt\u00e9k felett a m\u00e1gneses elem fel\u00fcl\u00edrja az elektronikus be\u00e1ll\u00edt\u00e1sokat.<sub>p<\/sub> K3: Minden MCCB \u00e1ramkorl\u00e1toz\u00f3 technol\u00f3gi\u00e1t haszn\u00e1l?<sup>2<\/sup>: Nem. A termikus-m\u00e1gneses MCCB-k (fix kiold\u00e1s, nincs \u00e1ll\u00edthat\u00f3s\u00e1g) \u00e1ltal\u00e1ban lassabb bimet\u00e1l t\u00falterhel\u00e9si elemeket haszn\u00e1lnak, \u00e9s el\u0151fordulhat, hogy nem \u00e9rik el a val\u00f3di \u00e1ramkorl\u00e1toz\u00e1st. A gyorsan m\u0171k\u00f6d\u0151 \u00e9rintkez\u0151kkel \u00e9s optimaliz\u00e1lt \u00edvolt\u00f3kkal rendelkez\u0151 elektronikus kiold\u00e1s\u00fa MCCB-k nagyobb val\u00f3sz\u00edn\u0171s\u00e9ggel \u00e1ramkorl\u00e1toz\u00f3ak (ellen\u0151rizze a gy\u00e1rt\u00f3 \u00e1tenged\u00e9si g\u00f6rb\u00e9ivel, amelyek az I.<\/p>\n<h3>\u00e9s I<\/h3>\n<p><strong>A<\/strong>t \u00e9rt\u00e9keket mutatj\u00e1k a v\u00e1rhat\u00f3 hiba\u00e1ramszintek alatt).<\/p>\n<ul>\n<li>K4: Hogyan ellen\u0151rizhetem a szelektivit\u00e1st k\u00e9t MCCB k\u00f6z\u00f6tt?<sup>2<\/sup>: Haszn\u00e1ljon gy\u00e1rt\u00f3i koordin\u00e1ci\u00f3s t\u00e1bl\u00e1zatokat (ne csak id\u0151-\u00e1ram g\u00f6rb\u00e9ket). A t\u00e1bl\u00e1zatok figyelembe veszik:<\/li>\n<li>A downstream megszak\u00edt\u00f3 \u00e1tengedett energi\u00e1ja (I<\/li>\n<li>t)<br \/>\nAz upstream megszak\u00edt\u00f3 nem kiold\u00e1si energia k\u00fcsz\u00f6b\u00e9rt\u00e9ke.<\/li>\n<\/ul>\n<h3>\u00c1ramkorl\u00e1toz\u00f3 hat\u00e1sok k\u00fcl\u00f6nb\u00f6z\u0151 hiba\u00e1ramszinteken<sub>n<\/sub>)?<\/h3>\n<p><strong>A<\/strong>P\u00e9lda: A Schneider Electric r\u00e9szletes szelektivit\u00e1si t\u00e1bl\u00e1zatokat biztos\u00edt a koordin\u00e1ci\u00f3s \u00fatmutat\u00f3iban, amelyek a maxim\u00e1lis szelektivit\u00e1si hat\u00e1r\u00e9rt\u00e9keket mutatj\u00e1k (pl. \u201eSzelekt\u00edv 15 kA-ig\u201d bizonyos MCCB modellek k\u00f6z\u00f6tt).<sub>n<\/sub> K5: Mi\u00e9rt van a motoros MCCB-knek magasabb pillanatnyi be\u00e1ll\u00edt\u00e1sa (13-14\u00d7 I<sub>n<\/sub>?.<\/p>\n<hr \/>\n<h2>K\u00f6vetkeztet\u00e9s<\/h2>\n<p>: A zavar\u00f3 kiold\u00e1s megakad\u00e1lyoz\u00e1sa \u00e9rdek\u00e9ben a k\u00f6zvetlen ind\u00edt\u00e1s\u00fa (DOL) motorind\u00edt\u00e1s sor\u00e1n. A kutat\u00e1sok azt mutatj\u00e1k, hogy a motorind\u00edt\u00e1si \u00e1ram el\u00e9rheti a 12-13\u00d7 I<sub>cw<\/sub> -t az els\u0151 cs\u00facsn\u00e1l. A motoros MCCB-knek magasabb az \u00e9rintkez\u00e9si tasz\u00edt\u00e1si k\u00fcsz\u00f6b\u00e9rt\u00e9ke is (&gt;14\u00d7 I <strong>), hogy biztos\u00edts\u00e1k, hogy az \u00e9rintkez\u0151k ne ny\u00edljanak ki az ind\u00edt\u00e1si tranziens sor\u00e1n, ami sz\u00fcks\u00e9gtelen kop\u00e1st \u00e9s potenci\u00e1lis \u00f6sszeheged\u00e9st okozna az \u00fajraz\u00e1r\u00e1skor.<\/strong><\/p>\n<p>Az MCCB-k l\u00e1tsz\u00f3lagos paradoxona, miszerint r\u00f6vidz\u00e1rlati k\u00e9sleltet\u00e9si v\u00e9delmet k\u00edn\u00e1lnak n\u00e9vleges I<sub>n<\/sub>\u00e9rt\u00e9kek n\u00e9lk\u00fcl, a v\u00e9delem filoz\u00f3fi\u00e1j\u00e1nak alapvet\u0151 k\u00fcl\u00f6nbs\u00e9g\u00e9b\u0151l ad\u00f3dik:.<\/p>\n<p><strong>Az ACB-k mechanikai szil\u00e1rds\u00e1ggal \u00e9s termikus t\u00f6meggel \u00e1llnak ellen a hib\u00e1knak, m\u00edg az MCCB-k elektrom\u00e1gneses fizik\u00e1val \u00e9s gyors \u00edvolt\u00e1ssal korl\u00e1tozz\u00e1k a hib\u00e1kat.<\/strong>Ennek a k\u00fcl\u00f6nbs\u00e9gnek a meg\u00e9rt\u00e9se kritikus fontoss\u00e1g\u00fa a koordin\u00e1ci\u00f3s s\u00e9m\u00e1kat tervez\u0151 villamosm\u00e9rn\u00f6k\u00f6k sz\u00e1m\u00e1ra. Az MCCB-k szelekt\u00edv koordin\u00e1ci\u00f3t \u00e9rhetnek el a downstream eszk\u00f6z\u00f6kkel a benne rejl\u0151 r\u00f6vidz\u00e1rlati ellen\u00e1ll\u00e1si k\u00e9pess\u00e9g\u00fck\u00f6n bel\u00fcl (\u00e1ltal\u00e1ban 12-14\u00d7 I\u201c<\/p>\n<hr \/>\n<p><strong>A VIOX Electricr\u0151l<\/strong>), de nem tudj\u00e1k megism\u00e9telni az ACB viselked\u00e9s\u00e9t a magas hiba\u00e1ramokn\u00e1l, amelyek megk\u00f6zel\u00edtik a megszak\u00edt\u00e1si k\u00e9pess\u00e9g\u00fcket. Azokn\u00e1l az alkalmaz\u00e1sokn\u00e1l, amelyek teljes szelektivit\u00e1st ig\u00e9nyelnek a teljes hiba\u00e1ram tartom\u00e1nyban, az ACB f\u0151 bet\u00e1pok, amelyek MCCB adagol\u00f3kkal koordin\u00e1lnak, tov\u00e1bbra is a legjobb megold\u00e1st jelentik \u2013 kihaszn\u00e1lva a B kateg\u00f3ri\u00e1j\u00fa id\u0151z\u00edt\u00e9si k\u00e9pess\u00e9geket upstream, mik\u00f6zben kihaszn\u00e1lj\u00e1k az A kateg\u00f3ri\u00e1j\u00fa \u00e1ramkorl\u00e1toz\u00f3 el\u0151ny\u00f6ket downstream. <a href=\"https:\/\/test.viox.com\/hu\/\">Kapcsolatfelv\u00e9tel<\/a> F\u0151 tervez\u00e9si elv.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>MCCB electronic trip unit in industrial panel showing 400A rating and current display &#8211; VIOX Electric Direct Answer Molded Case Circuit Breakers (MCCBs) can provide short-time delay protection without a rated short-time withstand current (Icw) because they belong to IEC 60947-2 Category A, where selectivity is achieved through current-limiting technology rather than intentional time delays. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":21475,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":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":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-21474","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/test.viox.com\/hu\/wp-json\/wp\/v2\/posts\/21474","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/test.viox.com\/hu\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/test.viox.com\/hu\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/test.viox.com\/hu\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/test.viox.com\/hu\/wp-json\/wp\/v2\/comments?post=21474"}],"version-history":[{"count":1,"href":"https:\/\/test.viox.com\/hu\/wp-json\/wp\/v2\/posts\/21474\/revisions"}],"predecessor-version":[{"id":21476,"href":"https:\/\/test.viox.com\/hu\/wp-json\/wp\/v2\/posts\/21474\/revisions\/21476"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/test.viox.com\/hu\/wp-json\/wp\/v2\/media\/21475"}],"wp:attachment":[{"href":"https:\/\/test.viox.com\/hu\/wp-json\/wp\/v2\/media?parent=21474"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/test.viox.com\/hu\/wp-json\/wp\/v2\/categories?post=21474"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/test.viox.com\/hu\/wp-json\/wp\/v2\/tags?post=21474"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}