{"id":2231,"date":"2018-01-25T09:48:18","date_gmt":"2018-01-25T09:48:18","guid":{"rendered":"https:\/\/vyrobcikabelu.cz\/?p=2231\/"},"modified":"2018-12-11T12:31:07","modified_gmt":"2018-12-11T12:31:07","slug":"poziarne-vlastnosti-kablov-sposob-ich-hodnotenia","status":"publish","type":"post","link":"https:\/\/www.vyrobcikabelu.cz\/sk\/poziarne-vlastnosti-kablov-sposob-ich-hodnotenia\/","title":{"rendered":"Po\u017eiarne vlastnosti k\u00e1blov a sp\u00f4sob ich hodnotenia"},"content":{"rendered":"<p>V\u0161etky protipo\u017eiarne vlastnosti jednotliv\u00fdch elektrotechnick\u00fdch v\u00fdrobkov pou\u017eit\u00fdch pre \u00fa\u010del, na ktor\u00fd sa vz\u0165ahuj\u00fa predpisy protipo\u017eiarnej bezpe\u010dnosti sa overuj\u00fa sk\u00fa\u0161kami. Pre k\u00e1ble ich mo\u017eno ich rozdeli\u0165 nasledovne:\u00a0<\/p>\n<h2>A. Sk\u00fa\u0161ky k\u00e1blov, zabezpe\u010duj\u00face overenie ne\u0161\u00edrenia oh\u0148a po samostatnom k\u00e1bli alebo zv\u00e4zku k\u00e1blov.Tieto sa aplikuj\u00fa pre v\u0161etky k\u00e1ble s definovan\u00fdmi odolnos\u0165ou vo\u010di oh\u0148u. S\u00fa to:<\/h2>\n<p><strong>S\u00fabor EN 60332-&#8230;.. <\/strong>Sk\u00fa\u0161ky elektrick\u00fdch a optovl\u00e1knov\u00fdch k\u00e1blov v podmienkach horenia. Sk\u00fa\u0161ka \u0161\u00edrenia plame\u0148apo vertik\u00e1lne ulo\u017een\u00fdch vodi\u010doch alebo k\u00e1bloch samostatne alebo vo zv\u00e4zkoch.<\/p>\n<p><em>Obr. 1 Sk\u00fa\u0161ka \u0161\u00edrenia plame\u0148apo vertik\u00e1lne ulo\u017een\u00fdch vodi\u010doch alebo k\u00e1bloch samostatne alebo vo zv\u00e4zkoch Samostatn\u00fd k\u00e1bel Zv\u00e4zok k\u00e1blov<\/em><\/p>\n<table style=\"height: 269px;\" width=\"939\">\n<tbody>\n<tr>\n<td style=\"width: 472px; text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2210\" src=\"https:\/\/vyrobcikabelu.cz\/wp-content\/uploads\/2018\/01\/01.jpg\" alt=\"\" width=\"80\" height=\"233\" \/><\/td>\n<td style=\"width: 466px; text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2212\" src=\"https:\/\/vyrobcikabelu.cz\/wp-content\/uploads\/2018\/01\/02.png\" alt=\"\" width=\"119\" height=\"263\" \/><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 472px; text-align: center;\"><em>Samostatn\u00fd k\u00e1bel<\/em><\/td>\n<td style=\"width: 466px; text-align: center;\"><em>Zv\u00e4zok k\u00e1blov<\/em><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<p>Definovan\u00e1 vzorka samostatn\u00e9ho k\u00e1bla alebo zv\u00e4zku k\u00e1blov je umiestnen\u00e1 do sk\u00fa\u0161obnej komory a p\u00f4sob\u00ed na \u0148u definovan\u00fd plynov\u00fd hor\u00e1k po predp\u00edsan\u00fa dobu. Meria sa doba do zhasnutia vzorky po odstaven\u00ed hor\u00e1ka a rozsah po\u0161kodenia (zuho\u013enatenia) pl\u00e1\u0161\u0165a k\u00e1bla.<\/p>\n<h2>B. Stanovenie triedy reakcie k\u00e1blov na ohe\u0148 pre syst\u00e9m posudzovania I+ a III (Dca).<\/h2>\n<p><strong>EN 50399<\/strong> Spolo\u010dn\u00e9 met\u00f3dy sk\u00fa\u0161ok k\u00e1blov v podmienkach po\u017eiaru. Meranie uvo\u013e\u0148ovania tepla a tvorby dymu na k\u00e1bloch po\u010das sk\u00fa\u0161ky \u0161\u00edrenia plame\u0148a &#8211; Sk\u00fa\u0161obn\u00e9 zariadenia, postupy a v\u00fdsledky<\/p>\n<p><em>Obr. 2\u00a0Schematick\u00e9 zn\u00e1zornenie sk\u00fa\u0161ky.<\/em><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-2214 alignnone\" src=\"https:\/\/vyrobcikabelu.cz\/wp-content\/uploads\/2018\/01\/03.png\" alt=\"\" width=\"347\" height=\"257\" srcset=\"https:\/\/www.vyrobcikabelu.cz\/wp-content\/uploads\/2018\/01\/03.png 347w, https:\/\/www.vyrobcikabelu.cz\/wp-content\/uploads\/2018\/01\/03-300x222.png 300w\" sizes=\"(max-width: 347px) 100vw, 347px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>Sk\u00fa\u0161obn\u00e1 komora a usporiadanie vzoriek je podobn\u00e9 ako v predch\u00e1dzaj\u00facej sk\u00fa\u0161ke. Doplnen\u00e1 je potrubn\u00fdm syst\u00e9mom na anal\u00fdzu vytvoren\u00e9ho tepla a dymu, cel\u00e9 vyhodnotenie procesu horenia k\u00e1blov je automatick\u00e9. Na z\u00e1klade v\u00fdsledkov anal\u00fdzy splod\u00edn je stanoven\u00e1 trieda reakcie na ohe\u0148 pre dan\u00fa k\u00e1blov\u00fa vzorku a doplnkov\u00e1 klasifik\u00e1cia s(hustota dymu pri horen\u00ed) a d(odkvapk\u00e1vanie horiacich \u010dast\u00edc, po\u010detnos\u0165 a doba do ich zhasnutia).<\/p>\n<h2>C. Sk\u00fa\u0161ky na overenie obsahu halog\u00e9nov v hor\u013eav\u00fdch materi\u00e1loch k\u00e1blov, meranie korozivity a hustoty splod\u00edn horenia.\u00a0<\/h2>\n<p><strong>EN 61034&#8230;.<\/strong> Meranie hustoty dymu pri horen\u00ed k\u00e1blov za definovan\u00fdch podmienok. Tvorba dymu definuje jednu z doplnkov\u00fdch klasifik\u00e1ci\u00ed s1, s1a, s1b, s2 alebo s3 pre k\u00e1ble s definovanou triedou reakcie na ohe\u0148 B1ca, B2ca, Cca, Dca.<\/p>\n<p><em>Obr. 3 Komora na meranie hustoty dymu<\/em><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-2216 alignnone\" src=\"https:\/\/vyrobcikabelu.cz\/wp-content\/uploads\/2018\/01\/04.png\" alt=\"\" width=\"345\" height=\"237\" srcset=\"https:\/\/www.vyrobcikabelu.cz\/wp-content\/uploads\/2018\/01\/04.png 345w, https:\/\/www.vyrobcikabelu.cz\/wp-content\/uploads\/2018\/01\/04-300x206.png 300w\" sizes=\"(max-width: 345px) 100vw, 345px\" \/><\/p>\n<p>Sk\u00fa\u0161obn\u00e9 vzorky k\u00e1blov sa umiestnia do sk\u00fa\u0161obnej komory kde sa za definovan\u00fdch podmienok zap\u00e1li. Fotometricky sa meria percentu\u00e1lny prestup svetla v komore cez vytvoren\u00fd dym.<\/p>\n<p><strong>EN 60754&#8230;<\/strong> Spolo\u010dn\u00e9 met\u00f3dy sk\u00fa\u0161ok k\u00e1blov v podmienkach po\u017eiaru. Sk\u00fa\u0161ky plynov vznikaj\u00facich pri horen\u00ed materi\u00e1lov k\u00e1blov. \u2013 ur\u010denie stup\u0148a kyslosti plynov po\u010das horenia materi\u00e1lov k\u00e1blov stanoven\u00edm pH a vodivosti. Korozivita a vodivos\u0165 splod\u00edn horenia definuje jednu z doplnkov\u00fdch klasifik\u00e1ci\u00ed: a1, a2 alebo a3 pre k\u00e1ble s definovanou triedou reakcie na ohe\u0148 B1ca, B2ca, Cca, Dca.<\/p>\n<p><em>Obr. 4 Zariadenie na meranie korozivity plynov, vznikaj\u00facich pri horen\u00ed<\/em><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2218\" src=\"https:\/\/vyrobcikabelu.cz\/wp-content\/uploads\/2018\/01\/05.png\" alt=\"\" width=\"482\" height=\"264\" srcset=\"https:\/\/www.vyrobcikabelu.cz\/wp-content\/uploads\/2018\/01\/05.png 482w, https:\/\/www.vyrobcikabelu.cz\/wp-content\/uploads\/2018\/01\/05-300x164.png 300w\" sizes=\"(max-width: 482px) 100vw, 482px\" \/><\/p>\n<p>\n Ur\u010den\u00e9 mno\u017estvo hor\u013eav\u00fdch materi\u00e1lov k\u00e1bla sa spa\u013euje za definovan\u00fdch podmienok. Vznikaj\u00face plyny sa zachyt\u00e1vaj\u00fa do\u00a0 destilovanej alebo demineralizovanej vody a meria sa hodnota pH a vodivos\u0165 roztoku<\/p>\n<h2>D. Sk\u00fa\u0161ky k\u00e1blov, zabezpe\u010duj\u00face overenie funk\u010dnosti k\u00e1bla po\u010das po\u017eiaru.\u00a0<\/h2>\n<p><strong>IEC 60331<\/strong> Sk\u00fa\u0161ky elektrick\u00fdch k\u00e1blov v podmienkach po\u017eiaru &#8211; Celistvos\u0165 obvodu \u2013 Postupy a po\u017eiadavky. \u010cas\u0165 21 plat\u00ed pre k\u00e1ble s menovit\u00fdm nap\u00e4t\u00edm do 0,6\/1,0 kV vr\u00e1tane, \u010das\u0165 23 pre k\u00e1ble pre prenos d\u00e1t a \u010das\u0165 25 pre optick\u00e9 k\u00e1ble. Je zaveden\u00e1 aj \u010das\u0165 31 pre postupy a po\u017eiadavky na po\u017eiar s otrasom. K\u00e1ble s menovit\u00fdm nap\u00e4t\u00edm do 0,6\/ 1 kV vr\u00e1tane, sk\u00fa\u0161ka je ale zn\u00e1mej\u0161ia a \u010dastej\u0161ie vykon\u00e1van\u00e1 pod\u013ea EN noriem op\u00edsan\u00fdch ni\u017e\u0161ie.<\/p>\n<p><em>Obr. 5 Zariadenie na meranie funk\u010dnosti k\u00e1blov v ohni<\/em><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2220\" src=\"https:\/\/vyrobcikabelu.cz\/wp-content\/uploads\/2018\/01\/06.png\" alt=\"\" width=\"520\" height=\"348\" srcset=\"https:\/\/www.vyrobcikabelu.cz\/wp-content\/uploads\/2018\/01\/06.png 520w, https:\/\/www.vyrobcikabelu.cz\/wp-content\/uploads\/2018\/01\/06-300x200.png 300w\" sizes=\"(max-width: 520px) 100vw, 520px\" \/><br \/>\n Vzorka elektrick\u00e9ho k\u00e1bla je pripojen\u00e1 na menovit\u00e9 nap\u00e4tie a vystaven\u00e1 p\u00f4sobeniu definovan\u00e9ho plame\u0148a. Po\u010das sk\u00fa\u0161ky nesmie nasta\u0165 skrat k\u00e1bla a meria sa doba, po\u010das ktorej je zachovan\u00e1 funk\u010dnos\u0165 obvodu. Pri sk\u00fa\u0161ke optick\u00e9ho k\u00e1bla sa meria jeho tlmenie, ktor\u00e9 sa nesmie zhor\u0161i\u0165 pod stanoven\u00e9 hodnoty.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>EN 50200<\/strong> Sk\u00fa\u0161obn\u00e1 met\u00f3da po\u017eiarnej odolnosti nechr\u00e1nen\u00fdch k\u00e1blov mal\u00fdch priemerov ur\u010den\u00fdch na pou\u017eitie v n\u00fadzov\u00fdch obvodoch \/ <strong>EN 50362<\/strong> Sk\u00fa\u0161obn\u00e1 met\u00f3da po\u017eiarnej odolnosti nechr\u00e1nen\u00fdch silnopr\u00fadov\u00fdch a kontroln\u00fdch k\u00e1blov ve\u013ek\u00fdch priemerov, ur\u010den\u00fdch na pou\u017e\u00edvanie v n\u00fadzov\u00fdch obvodoch.<\/p>\n<p><em>Obr. 6 Zariadenie na meranie funk\u010dnosti k\u00e1blov v ohni s poklepom<\/em><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-2222 alignnone\" src=\"https:\/\/vyrobcikabelu.cz\/wp-content\/uploads\/2018\/01\/07.png\" alt=\"\" width=\"464\" height=\"395\" srcset=\"https:\/\/www.vyrobcikabelu.cz\/wp-content\/uploads\/2018\/01\/07.png 464w, https:\/\/www.vyrobcikabelu.cz\/wp-content\/uploads\/2018\/01\/07-300x255.png 300w\" sizes=\"(max-width: 464px) 100vw, 464px\" \/><\/p>\n<p>Princ\u00edp sk\u00fa\u0161ky je rovnak\u00fd ako v predch\u00e1dzaj\u00facom pr\u00edpade, navy\u0161e je vzorka uchyten\u00e1 na odpru\u017eenej doske na ktor\u00fa v pravideln\u00fdch intervaloch po\u010das sk\u00fa\u0161ky p\u00f4sobia mechanick\u00e9 \u00fadery.<\/p>\n<p><strong>STN 92 0205<\/strong> Spr\u00e1vanie sa stavebn\u00fdch v\u00fdrobkov a kon\u0161trukci\u00ed v po\u017eiari. Zachovanie funk\u010dnej odolnosti k\u00e1blov\u00fdch syst\u00e9mov. Po\u017eiadavky, sk\u00fa\u0161ky a klasifik\u00e1cia \/ \u010cSN 730895Po\u017e\u00e1rn\u00edbezpe\u010dnoststaveb &#8211; Zachov\u00e1n\u00ed funk\u010dnosti kabelov\u00fdch tras v podm\u00ednk\u00e1ch po\u017e\u00e1ru &#8211; Po\u017eadavky, zkou\u0161ky, klasifikace Px-R, PHx-R a aplikacev\u00fdsledk\u016fzkou\u0161ek. \/ <strong>DIN 4102-12<\/strong> Brandverhalten von BaustoffenundBauteilen &#8211; Teil 12: Funktionserhalt von elektrischenKabelanlagen; AnforderungenundPr\u00fcfungen<\/p>\n<p><em>Obr. 7 Zariadenie na meranie funk\u010dnosti k\u00e1blov\u00fdch syst\u00e9mov\u00a0<\/em><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2224\" src=\"https:\/\/vyrobcikabelu.cz\/wp-content\/uploads\/2018\/01\/08.png\" alt=\"\" width=\"395\" height=\"318\" srcset=\"https:\/\/www.vyrobcikabelu.cz\/wp-content\/uploads\/2018\/01\/08.png 395w, https:\/\/www.vyrobcikabelu.cz\/wp-content\/uploads\/2018\/01\/08-300x242.png 300w\" sizes=\"(max-width: 395px) 100vw, 395px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>Sk\u00fa\u0161obn\u00e1 vzorka pozost\u00e1va z k\u00e1blov ulo\u017een\u00fdch na k\u00e1blovom nosnom syst\u00e9me (\u017e\u013eaby, \u00fachytky, ostatn\u00e9 prvky k\u00e1blov\u00fdch syst\u00e9mov), je in\u0161talovan\u00e1 v sk\u00fa\u0161obnom priestore a vystaven\u00e1 teplote normovej krivky teplota\/\u010das pod\u013ea EN 1363-1, \u010do predstavuje simul\u00e1ciu re\u00e1lneho po\u017eiaru. K\u00e1ble s\u00fa napojen\u00e9 na menovit\u00e9 nap\u00e4tie a po\u010das sk\u00fa\u0161ky nesmie d\u00f4js\u0165 ku skratu alebo preru\u0161eniu obvodu.Pri sk\u00fa\u0161ke optick\u00e9ho k\u00e1bla sa meria jeho tlmenie, ktor\u00e9 sa nesmie zhor\u0161i\u0165 pod stanoven\u00e9 hodnoty.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>V\u0161etky protipo\u017eiarne vlastnosti jednotliv\u00fdch elektrotechnick\u00fdch v\u00fdrobkov pou\u017eit\u00fdch pre \u00fa\u010del, na ktor\u00fd sa vz\u0165ahuj\u00fa predpisy protipo\u017eiarnej bezpe\u010dnosti sa overuj\u00fa sk\u00fa\u0161kami. Pre k\u00e1ble ich mo\u017eno ich rozdeli\u0165 nasledovne:\u00a0 A. Sk\u00fa\u0161ky k\u00e1blov, zabezpe\u010duj\u00face overenie ne\u0161\u00edrenia oh\u0148a po samostatnom k\u00e1bli alebo zv\u00e4zku k\u00e1blov.Tieto sa &hellip; <a href=\"https:\/\/www.vyrobcikabelu.cz\/sk\/poziarne-vlastnosti-kablov-sposob-ich-hodnotenia\/\">Pokra\u010dova\u0165<\/a><\/p>\n","protected":false},"author":18,"featured_media":2282,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20,19],"tags":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.8 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Po\u017eiarne vlastnosti k\u00e1blov a sp\u00f4sob ich hodnotenia - AVK<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.vyrobcikabelu.cz\/sk\/poziarne-vlastnosti-kablov-sposob-ich-hodnotenia\/\" \/>\n<meta property=\"og:locale\" content=\"sk_SK\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Po\u017eiarne vlastnosti k\u00e1blov a sp\u00f4sob ich hodnotenia - AVK\" \/>\n<meta property=\"og:description\" content=\"V\u0161etky protipo\u017eiarne vlastnosti jednotliv\u00fdch elektrotechnick\u00fdch v\u00fdrobkov pou\u017eit\u00fdch pre \u00fa\u010del, na ktor\u00fd sa vz\u0165ahuj\u00fa predpisy protipo\u017eiarnej bezpe\u010dnosti sa overuj\u00fa sk\u00fa\u0161kami. Pre k\u00e1ble ich mo\u017eno ich rozdeli\u0165 nasledovne:\u00a0 A. 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