{"id":5774,"date":"2023-03-01T08:00:18","date_gmt":"2023-03-01T08:00:18","guid":{"rendered":"https:\/\/www.vyrobcikabelu.cz\/?p=5774"},"modified":"2023-02-24T08:27:34","modified_gmt":"2023-02-24T08:27:34","slug":"vplyv-uv-ziarenia-na-vlastnosti-pvc-a-frnc-kablov-1-cast","status":"publish","type":"post","link":"https:\/\/www.vyrobcikabelu.cz\/sk\/vplyv-uv-ziarenia-na-vlastnosti-pvc-a-frnc-kablov-1-cast\/","title":{"rendered":"Vplyv UV \u017eiarenia na vlastnosti PVC a FRNC k\u00e1blov &#8211; 1.\u010das\u0165"},"content":{"rendered":"<h2><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-5771 alignright\" src=\"https:\/\/www.vyrobcikabelu.cz\/wp-content\/uploads\/2023\/02\/prirodni-podminky-starnuti-kabelu-300x166.jpg\" alt=\"\" width=\"300\" height=\"166\" srcset=\"https:\/\/www.vyrobcikabelu.cz\/wp-content\/uploads\/2023\/02\/prirodni-podminky-starnuti-kabelu-300x166.jpg 300w, https:\/\/www.vyrobcikabelu.cz\/wp-content\/uploads\/2023\/02\/prirodni-podminky-starnuti-kabelu-1024x566.jpg 1024w, https:\/\/www.vyrobcikabelu.cz\/wp-content\/uploads\/2023\/02\/prirodni-podminky-starnuti-kabelu-768x424.jpg 768w, https:\/\/www.vyrobcikabelu.cz\/wp-content\/uploads\/2023\/02\/prirodni-podminky-starnuti-kabelu-1536x849.jpg 1536w, https:\/\/www.vyrobcikabelu.cz\/wp-content\/uploads\/2023\/02\/prirodni-podminky-starnuti-kabelu-1320x729.jpg 1320w, https:\/\/www.vyrobcikabelu.cz\/wp-content\/uploads\/2023\/02\/prirodni-podminky-starnuti-kabelu.jpg 1920w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/>K\u00e1ble a vodi\u010de tie\u017e starn\u00fa<\/h2>\n<p><span style=\"font-weight: 400;\">Starnutie materi\u00e1lov je fenom\u00e9n, ktor\u00fd determinuje \u017eivotnos\u0165 k\u00e1blov. D\u00f4sledkom starnutia doch\u00e1dza k\u00a0<strong>zmene vlastnost\u00ed materi\u00e1lov<\/strong>, ktor\u00e1 ovplyv\u0148uje rozhoduj\u00face parametre, ktor\u00e9 s\u00fa nevyhnutn\u00e9 pre <strong>pos\u00fadenie bezpe\u010dnej funk\u010dnosti k\u00e1bla v\u00a0prev\u00e1dzke<\/strong>. Strata resp. zn\u00ed\u017eenie hodnoty t\u00fdchto parametrov znamen\u00e1 ukon\u010denie bezpe\u010dnej prev\u00e1dzky k\u00e1bla. Na starnutie k\u00e1bla m\u00e1 vplyv mno\u017estvo faktorov z\u00a0ktor\u00fdch najrozhoduj\u00facej\u0161ie s\u00fa teplota, r\u00f4zne typy \u017eiarenia vr\u00e1tane UV, vlhkos\u0165, p\u00f4sobenie chemick\u00fdch l\u00e1tok, mechanick\u00e9 za\u0165a\u017eenie.<\/span><\/p>\n<p><span style=\"font-weight: 400;\"> Vonkaj\u0161ie vplyvy sp\u00f4sobuj\u00fa r\u00f4zne ve\u013ek\u00e9 zmeny, ktor\u00e9 m\u00f4\u017eu ma\u0165 vratn\u00fd, prechodn\u00fd alebo nevratn\u00fd charakter. <strong>Za vratn\u00e9 zmeny pova\u017eujeme n\u00e1vrat vlastnost\u00ed do p\u00f4vodn\u00e9ho stavu po ukon\u010den\u00ed p\u00f4sobenia vonkaj\u0161ieho \u010dinite\u013ea.<\/strong> Napr\u00edklad s\u00fa to zmeny vlastnost\u00ed izolantov sp\u00f4soben\u00e9 teplotou. Pri zv\u00fd\u0161enej teplote sa men\u00ed vn\u00fatorn\u00fd odpor, dielektrick\u00e9 straty, elektrick\u00e1 pevnos\u0165, mechanick\u00e9 vlastnosti at\u010f. Prechodn\u00fd charakter zmien znamen\u00e1, \u017ee sa vlastnosti upravia na p\u00f4vodn\u00fa hodnotu, hne\u010f po poklesnut\u00ed degrada\u010dn\u00e9ho \u010dinite\u013ea pod kritick\u00fa hodnotu. Napr\u00edklad znehodnotenie povrchov\u00fdch vlastnost\u00ed izolantu vo vlhkej atmosf\u00e9re.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Zmeny\u00a0vlastnost\u00ed elektroizola\u010dn\u00fdch materi\u00e1lov, ktor\u00e9 sa ani po odznen\u00ed p\u00f4sobenia vonkaj\u0161ieho \u010dinite\u013ea nevr\u00e1tia do p\u00f4vodn\u00e9ho stavu, naz\u00fdvame trval\u00e9 zmeny. S\u00fa to teda zmeny s\u00a0nevratn\u00fdm charakterom. Trval\u00e9 zmeny nie s\u00fa z\u00e1visl\u00e9 len od intenzity, ale aj od d\u013a\u017eky p\u00f4sobenia vonkaj\u0161\u00edch faktorov. Trval\u00e9 zmeny sa ozna\u010duj\u00fa aj ako <strong>starnutie, ke\u010f\u017ee skoro v\u017edy ved\u00fa k zhor\u0161eniu funk\u010dn\u00fdch vlastnost\u00ed<\/strong>.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\"><br \/>\n<\/span><b>VUKI a.s. sleduje dopady atmosf\u00e9rick\u00e9ho prostredia u\u017e dlhodobo<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Vo VUKI a.s. sme sa zaoberali <strong>vplyvom vonkaj\u0161ieho prirodzen\u00e9ho atmosf\u00e9rick\u00e9ho prostredia na starnutie<\/strong> <strong>izol\u00e1cie<\/strong> a\u00a0pl\u00e1\u0161\u0165a vybran\u00fdch kon\u0161trukci\u00ed k\u00e1blov a\u00a0vykonali sme sk\u00fa\u0161ky na nieko\u013ek\u00fdch PVC a\u00a0FRNC k\u00e1bloch v\u00a0priebehu 2 rokov.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u00da\u010delom tohto sledovania bolo sledova\u0165 mechanick\u00e9 vlastnosti r\u00f4znych izola\u010dn\u00fdch a\u00a0pl\u00e1\u0161\u0165ov\u00fdch zmes\u00ed aplikovan\u00fdch na r\u00f4znych typoch k\u00e1blov v\u00a0podmienkach prirodzen\u00e9ho starnutia, ktor\u00e9 m\u00f4\u017ee porovna\u0165 \u017eivotnos\u0165 r\u00f4znych kon\u0161trukci\u00ed in\u0161tala\u010dn\u00fdch k\u00e1blov do 1 kV pri ich pou\u017eit\u00ed v\u00a0exteri\u00e9roch. Vzorky ur\u010den\u00e9 na prirodzen\u00e9 starnutie v\u00a0r\u00f4znom usporiadan\u00ed a\u00a0mechanickom za\u0165a\u017een\u00ed ako je torzia, ohyb na definovan\u00fd polomer a\u00a0podobne boli umiestnen\u00e9 na streche budovy VUKI na Rybni\u010dnej ulici.<\/span><\/p>\n<h2><b>V hlavnej \u00falohe UV \u017eiarenie, teplota a voda<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Sledovan\u00e9 vlastnosti v prirodzenom prostred\u00ed najviac ovplyv\u0148uje p\u00f4sobenie UV \u017eiarenia, teplota a p\u00f4sobenie vody v d\u00f4sledku da\u017e\u010fa.\u00a0<\/span><span style=\"font-weight: 400;\">Klimatick\u00e9 podmienky v\u00a0mieste sk\u00fa\u0161ky v\u00a0sledovanom obdob\u00ed 30.11.2020 \u2013 1.12.2022\u00a0<\/span><span style=\"font-weight: 400;\">boli zadefinovan\u00e9 pod\u013ea SHMU.<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">V\u00fdber hodnoten\u00fdch vzoriek bol zhodn\u00fd s\u00a0v\u00fdberom typov k\u00e1blov, na ktor\u00fdch sa hodnotilo zr\u00fdchlen\u00e9 starnutie a\u00a0je uveden\u00fd v\u00a0Tab.1.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Tab. 1 Kon\u0161trukcia hodnoten\u00fdch k\u00e1blov<\/span><\/p>\n<table style=\"border-collapse: collapse; width: 100%;\">\n<tbody>\n<tr>\n<td style=\"width: 22.5676%;\">\n<p><b>Ozna\u010denie k\u00e1bla<\/b><\/p>\n<\/td>\n<td style=\"width: 22.027%;\">\n<p><b>Izol\u00e1cia<\/b><\/p>\n<\/td>\n<td style=\"width: 21.7568%;\">\n<p><b>V\u00fdpl\u0148<\/b><\/p>\n<\/td>\n<td style=\"width: 21.4865%;\">\n<p><b>Pl\u00e1\u0161\u0165<\/b><\/p>\n<\/td>\n<td style=\"width: 12.027%;\">\n<p><b>Pozn\u00e1mka<\/b><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 22.5676%;\">\n<p><span style=\"font-weight: 400;\">CYKY J5x2,5 Pb<\/span><\/p>\n<\/td>\n<td style=\"width: 22.027%;\">\n<p><span style=\"font-weight: 400;\">PVC YI1*<\/span><\/p>\n<\/td>\n<td style=\"width: 21.7568%;\">\n<p><span style=\"font-weight: 400;\">HFFR, LOI ca 30 %<\/span><\/p>\n<\/td>\n<td style=\"width: 21.4865%;\">\n<p><span style=\"font-weight: 400;\">PVC YM1*<\/span><\/p>\n<\/td>\n<td style=\"width: 12.027%;\">\n<p><span style=\"font-weight: 400;\">Pb stabiliz\u00e1tor, DOP zm\u00e4k\u010dovadlo, TS 60 min\u00fat<\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 22.5676%;\">\n<p><span style=\"font-weight: 400;\">CYKY J5x2,5 Ca<\/span><\/p>\n<\/td>\n<td style=\"width: 22.027%;\">\n<p><span style=\"font-weight: 400;\">PVC YI1*<\/span><\/p>\n<\/td>\n<td style=\"width: 21.7568%;\">\n<p><span style=\"font-weight: 400;\">HFFR, LOI ca 30 %<\/span><\/p>\n<\/td>\n<td style=\"width: 21.4865%;\">\n<p><span style=\"font-weight: 400;\">PVC YM1*<\/span><\/p>\n<\/td>\n<td style=\"width: 12.027%;\">\n<p><span style=\"font-weight: 400;\">Ca-Zn stabiliz\u00e1tor, DIDP zm\u00e4k\u010dovadlo, TS min.\u00a0 40 min\u00fat<\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 22.5676%;\">\n<p><span style=\"font-weight: 400;\">N2XH J 3&#215;2,5<\/span><\/p>\n<\/td>\n<td style=\"width: 22.027%;\">\n<p><span style=\"font-weight: 400;\">XLPE*<\/span><\/p>\n<\/td>\n<td style=\"width: 21.7568%;\">\n<p><span style=\"font-weight: 400;\">HFFR, LOI ca 30 %<\/span><\/p>\n<\/td>\n<td style=\"width: 21.4865%;\">\n<p><span style=\"font-weight: 400;\">HFFR, LOI ca 35 %<\/span><\/p>\n<\/td>\n<td style=\"width: 12.027%;\">\n<p><span style=\"font-weight: 400;\">XLPE sil\u00e1nom sie\u0165ovan\u00fd, LOI ca 17 %<\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 22.5676%;\">\n<p><span style=\"font-weight: 400;\">CHKE-R J 3&#215;2,5, \u010dierny<\/span><\/p>\n<\/td>\n<td style=\"width: 22.027%;\">\n<p><span style=\"font-weight: 400;\">HFFR*<\/span><\/p>\n<\/td>\n<td style=\"width: 21.7568%;\">\n<p><span style=\"font-weight: 400;\">HFFR, LOI ca 30 %<\/span><\/p>\n<\/td>\n<td style=\"width: 21.4865%;\">\n<p><span style=\"font-weight: 400;\">HFFR, LOI ca 35 %<\/span><\/p>\n<\/td>\n<td style=\"width: 12.027%;\">\n<p><span style=\"font-weight: 400;\">HFFR, LOI ca 32 %, \u010dierny pl\u00e1\u0161\u0165<\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 22.5676%;\">\n<p><span style=\"font-weight: 400;\">CHKE-R J 3&#215;2,5 B2ca(s1,d1,a1)\u00a0 \u010dierny<\/span><\/p>\n<\/td>\n<td style=\"width: 22.027%;\">\n<p><span style=\"font-weight: 400;\">HFFR*<\/span><\/p>\n<\/td>\n<td style=\"width: 21.7568%;\">\n<p><span style=\"font-weight: 400;\">HFFR, LOI ca 50 %<\/span><\/p>\n<\/td>\n<td style=\"width: 21.4865%;\">\n<p><span style=\"font-weight: 400;\">HFFR, LOI ca 35 %<\/span><\/p>\n<\/td>\n<td style=\"width: 12.027%;\">\n<p><span style=\"font-weight: 400;\">HFFR, LOI ca 32 %, \u010dierny pl\u00e1\u0161\u0165<\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 22.5676%;\">\n<p><span style=\"font-weight: 400;\">CHKE-R J 3&#215;2,5,\u00a0 oran\u017eov\u00fd<\/span><\/p>\n<\/td>\n<td style=\"width: 22.027%;\">\n<p><span style=\"font-weight: 400;\">HFFR*<\/span><\/p>\n<\/td>\n<td style=\"width: 21.7568%;\">\n<p><span style=\"font-weight: 400;\">HFFR, LOI ca 30 %<\/span><\/p>\n<\/td>\n<td style=\"width: 21.4865%;\">\n<p><span style=\"font-weight: 400;\">HFFR, LOI ca 35 %<\/span><\/p>\n<\/td>\n<td style=\"width: 12.027%;\">\n<p><span style=\"font-weight: 400;\">HFFR, LOI ca 32 %,\u00a0 oran\u017eov\u00fd pl\u00e1\u0161\u0165<\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 22.5676%;\">\n<p><span style=\"font-weight: 400;\">CHKE-R J 3&#215;2,5 B2ca(s1,d1,a1)\u00a0 oran\u017eov\u00fd<\/span><\/p>\n<\/td>\n<td style=\"width: 22.027%;\">\n<p><span style=\"font-weight: 400;\">HFFR*<\/span><\/p>\n<\/td>\n<td style=\"width: 21.7568%;\">\n<p><span style=\"font-weight: 400;\">HFFR, LOI ca 50 %<\/span><\/p>\n<\/td>\n<td style=\"width: 21.4865%;\">\n<p><span style=\"font-weight: 400;\">HFFR, LOI ca 35 %<\/span><\/p>\n<\/td>\n<td style=\"width: 12.027%;\">\n<p><span style=\"font-weight: 400;\">HFFR, LOI ca 32 %,\u00a0 oran\u017eov\u00fd pl\u00e1\u0161\u0165<\/span><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><i><span style=\"font-weight: 400;\">Tento pr\u00edspevok vznikol s podporou Slovenskej agent\u00fary pre v\u00fdskum a v\u00fdvoj (APVV) pod\u013ea zmluvy\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u010d. APVV-18-0028, . APVV-18-0029, APVV-19-0049.<\/span><\/i><\/p>\n<p><span style=\"font-weight: 400;\">Ing. Milan Dani\u0161, Ing. Rastislav Valach<\/span><\/p>\n<p><a href=\"mailto:danis@vuki.sk\"><span style=\"font-weight: 400;\">danis@vuki.sk<\/span><\/a><span style=\"font-weight: 400;\">; <\/span><a href=\"mailto:valach@vuki.sk\"><span style=\"font-weight: 400;\">valach@vuki.sk<\/span><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>K\u00e1ble a vodi\u010de tie\u017e starn\u00fa Starnutie materi\u00e1lov je fenom\u00e9n, ktor\u00fd determinuje \u017eivotnos\u0165 k\u00e1blov. D\u00f4sledkom starnutia doch\u00e1dza k\u00a0zmene vlastnost\u00ed materi\u00e1lov, ktor\u00e1 ovplyv\u0148uje rozhoduj\u00face parametre, ktor\u00e9 s\u00fa nevyhnutn\u00e9 pre pos\u00fadenie bezpe\u010dnej funk\u010dnosti k\u00e1bla v\u00a0prev\u00e1dzke. Strata resp. zn\u00ed\u017eenie hodnoty t\u00fdchto parametrov znamen\u00e1 ukon\u010denie &hellip; <a href=\"https:\/\/www.vyrobcikabelu.cz\/sk\/vplyv-uv-ziarenia-na-vlastnosti-pvc-a-frnc-kablov-1-cast\/\">Pokra\u010dova\u0165<\/a><\/p>\n","protected":false},"author":975909,"featured_media":5772,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[21],"tags":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.8 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Vplyv UV \u017eiarenia na vlastnosti PVC a FRNC k\u00e1blov - 1.\u010das\u0165 - 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\/vplyv-uv-ziarenia-na-vlastnosti-pvc-a-frnc-kablov-1-cast\/\" \/>\n<meta property=\"og:locale\" content=\"sk_SK\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Vplyv UV \u017eiarenia na vlastnosti PVC a FRNC k\u00e1blov - 1.\u010das\u0165 - AVK\" \/>\n<meta property=\"og:description\" content=\"K\u00e1ble a vodi\u010de tie\u017e starn\u00fa Starnutie materi\u00e1lov je fenom\u00e9n, ktor\u00fd determinuje \u017eivotnos\u0165 k\u00e1blov. D\u00f4sledkom starnutia doch\u00e1dza k\u00a0zmene vlastnost\u00ed materi\u00e1lov, ktor\u00e1 ovplyv\u0148uje rozhoduj\u00face parametre, ktor\u00e9 s\u00fa nevyhnutn\u00e9 pre pos\u00fadenie bezpe\u010dnej funk\u010dnosti k\u00e1bla v\u00a0prev\u00e1dzke. 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