{"id":3413,"date":"2022-03-30T12:25:58","date_gmt":"2022-03-30T10:25:58","guid":{"rendered":"https:\/\/mi.addevmaterials.com\/?p=3413"},"modified":"2026-02-24T16:42:02","modified_gmt":"2026-02-24T16:42:02","slug":"vyber-spravne-elektricke-izolace-pro-tepelnou-tridu-vaseho-zarizeni","status":"publish","type":"post","link":"https:\/\/addevmaterials.com\/converting\/cs\/choosing-the-right-electrical-insulation-for-the-thermal-class-of-your-equipment\/","title":{"rendered":"V\u00fdb\u011br spr\u00e1vn\u00e9 elektrick\u00e9 izolace pro tepelnou t\u0159\u00eddu va\u0161eho za\u0159\u00edzen\u00ed"},"content":{"rendered":"

Krom\u011b zaji\u0161t\u011bn\u00ed dielektrick\u00e9 funkce mus\u00ed m\u00edt izola\u010dn\u00ed materi\u00e1l tak\u00e9 teplotn\u00ed odolnost odpov\u00eddaj\u00edc\u00ed podm\u00ednk\u00e1m pou\u017eit\u00ed chr\u00e1n\u011bn\u00e9ho za\u0159\u00edzen\u00ed. Tato schopnost je charakterizov\u00e1na tepelnou t\u0159\u00eddou a mus\u00ed b\u00fdt uvedena ve specifikac\u00edch.<\/em><\/p>\n

Jak\u00e1 je tepeln\u00e1 t\u0159\u00edda elektrotechnick\u00fdch za\u0159\u00edzen\u00ed podle IEC 60085?<\/h2>\n

Teplotn\u00ed t\u0159\u00edda ur\u010duje maxim\u00e1ln\u00ed teplotu, p\u0159i kter\u00e9 si elektrick\u00fd izolant zachov\u00e1 ur\u010ditou tepelnou stabilitu s ohledem na st\u00e1rnut\u00ed. Je to tedy sv\u00fdm zp\u016fsobem\u00a0maxim\u00e1ln\u00ed teplota pou\u017eit\u00ed<\/strong>\u00a0doporu\u010deno pro optim\u00e1ln\u00ed \u017eivotnost izolace.<\/p>\n

Teplotn\u00ed t\u0159\u00edda izolantu je definov\u00e1na p\u00edsmenem podle normy IEC 60085:<\/p>\n

Varov\u00e1n\u00ed<\/strong>\u00a0<\/strong>: teplota zobrazen\u00e1 na tepeln\u00e9 t\u0159\u00edd\u011b odpov\u00edd\u00e1 teplot\u011b\u00a0skute\u010dn\u00e1 teplota na \u00farovni izolace<\/strong>\u00a0. Nesm\u00ed se zam\u011b\u0148ovat s maxim\u00e1ln\u00ed teplotou okol\u00ed nebo s n\u00e1r\u016fstem teploty v p\u0159\u00edpad\u011b transform\u00e1toru.<\/p>\n

Certifikace izola\u010dn\u00edch materi\u00e1l\u016f UL
\n<\/h2>\n

Krom\u011b normy IEC 60085 existuj\u00ed i dal\u0161\u00ed normy pro klasifikaci izola\u010dn\u00edch materi\u00e1l\u016f, kter\u00e9 mohou vyd\u00e1vat certifika\u010dn\u00ed org\u00e1ny. V t\u00e9to oblasti je jednou z nejpresti\u017en\u011bj\u0161\u00edch zna\u010dek shody v\u00fdrobk\u016f a celosv\u011btov\u011b uzn\u00e1vanou bezpe\u010dnostn\u00ed zna\u010dkou certifikace UL, kterou vyd\u00e1v\u00e1 spole\u010dnost Underwriters Laboratories\u00ae. Elektrick\u00e9mu izolantu s certifikac\u00ed UL je tedy p\u0159i\u0159azena tzv.\u00a0\"UL karta\", kter\u00e1 je sv\u00fdm zp\u016fsobem pasem shody izol\u00e1toru.<\/strong>\u00a0.<\/p>\n

Co se t\u00fd\u010de tepeln\u00fdch vlastnost\u00ed materi\u00e1lu, karta UL uv\u00e1d\u00ed n\u011bkolik \u00fadaj\u016f:<\/p>\n

    \n
  • odolnost proti plameni - UL94, testov\u00e1no podle evropsk\u00e9 normy IEC 60695-11-10;<\/li>\n
  • 3 typy RTI (relativn\u00ed tepeln\u00fd index), kter\u00e9 odpov\u00eddaj\u00ed\u00a0maxim\u00e1ln\u00ed provozn\u00ed teplota<\/strong>\u00a0materi\u00e1lu za kritick\u00fdch podm\u00ednek.<\/li>\n<\/ul>\n

    Pokud tedy o izola\u010dn\u00edm materi\u00e1lu \u0159ekneme, \u017ee vydr\u017e\u00ed 130 \u00b0C RTI, znamen\u00e1 to, \u017ee p\u0159i elektrick\u00e9m nebo mechanick\u00e9m nam\u00e1h\u00e1n\u00ed si v\u00fdrobek po 60 000 hodin\u00e1ch zachov\u00e1 alespo\u0148 60% sv\u00fdch p\u016fvodn\u00edch vlastnost\u00ed.<\/p>\n

    Varov\u00e1n\u00ed<\/strong>\u00a0je d\u016fle\u017eit\u00e9 si uv\u011bdomit, \u017ee hodnoty tepeln\u00e9 t\u0159\u00eddy nejsou v\u017edy ekvivalentn\u00ed mezi IEC 60085 a UL RTI.<\/p>\n

    Jak vybrat spr\u00e1vnou izolaci pro sv\u00e9 za\u0159\u00edzen\u00ed?
    \n<\/h2>\n

    Ide\u00e1ln\u00ed elektrick\u00fd izol\u00e1tor je p\u0159edev\u0161\u00edm ten, kter\u00fd spln\u00ed zad\u00e1n\u00ed.\u00a0<\/p>\n

    Bod o 4 kl\u00ed\u010dov\u00fdch krit\u00e9ri\u00edch p\u0159i v\u00fdb\u011bru elektrick\u00e9ho izolantu.<\/p>\n

    1. Dielektrick\u00e9 vlastnosti<\/strong><\/h3>\n

    Izola\u010dn\u00ed materi\u00e1ly mus\u00ed m\u00edt samoz\u0159ejm\u011b dielektrick\u00e9 vlastnosti umo\u017e\u0148uj\u00edc\u00ed \u00fa\u010dinnou ochranu za\u0159\u00edzen\u00ed. V n\u011bkter\u00fdch p\u0159\u00edpadech je v\u0161ak nezbytn\u00e9, aby zvolen\u00e1 elektrick\u00e1 izolace odol\u00e1vala vysok\u00fdm teplot\u00e1m. Proto se nemus\u00ed nutn\u011b hledat nejlep\u0161\u00ed dielektrick\u00e9 vlastnosti a mus\u00ed se hledat kompromisy, zejm\u00e9na pokud jde o mechanickou pevnost. P\u0159e\u010dt\u011bte si v\u00edce o zhor\u0161ov\u00e1n\u00ed dielektrick\u00fdch vlastnost\u00ed izol\u00e1tor\u016f.<\/p>\n

    2. Teplota pou\u017eit\u00ed<\/strong><\/h3>\n

    V\u00fdb\u011br izolace \u00fazce souvis\u00ed s tepeln\u00fdmi podm\u00ednkami, kter\u00fdm bude b\u011bhem sv\u00e9 \u017eivotnosti vystavena. Izol\u00e1tor toti\u017e m\u016f\u017ee na jedn\u00e9 stran\u011b degradovat p\u016fsoben\u00edm tepla a na druh\u00e9 stran\u011b se jeho dielektrick\u00e1 pevnost m\u011bn\u00ed s teplotou. P\u0159i v\u00fdb\u011bru izolace je proto t\u0159eba db\u00e1t na respektov\u00e1n\u00ed tepeln\u00e9 t\u0159\u00eddy za\u0159\u00edzen\u00ed.<\/p>\n

    3. Ekonomick\u00e9 krit\u00e9rium<\/strong><\/h3>\n

    Ekonomick\u00e9 hledisko je d\u016fle\u017eit\u00fdm krit\u00e9riem, kter\u00e9 je t\u0159eba zohlednit p\u0159i v\u00fdb\u011bru izolantu, proto\u017ee rozd\u00edly v n\u00e1kladech mohou b\u00fdt mezi dv\u011bma materi\u00e1ly velk\u00e9. N\u00e1klady na vysoce v\u00fdkonn\u00fd izol\u00e1tor mohou napomoci spolehlivosti izolovan\u00e9ho za\u0159\u00edzen\u00ed a mohou tak umo\u017enit dos\u00e1hnout v\u00fdznamn\u00fdch zisk\u016f na ostatn\u00edch stanic\u00edch tvo\u0159\u00edc\u00edch syst\u00e9m.<\/p>\n

    4. V\u00fdb\u011br uzn\u00e1van\u00fdch materi\u00e1l\u016f<\/strong><\/h3>\n

    Je t\u0159eba m\u00edt na pam\u011bti, \u017ee ne v\u0161echny materi\u00e1ly jsou stejn\u00e9<\/strong> i kdy\u017e je jejich chemick\u00e9 slo\u017een\u00ed a priori toto\u017en\u00e9. Nap\u0159\u00edklad pokud jsou v\u0161echny polyimidy v\u00edce \u010di m\u00e9n\u011b odoln\u00e9 v\u016f\u010di teplu, zna\u010dka Kapton\u00ae z\u016fst\u00e1v\u00e1 referenc\u00ed a z\u00e1rukou kvality, proto\u017ee v\u00fdrobce je zapojen do certifika\u010dn\u00edho procesu zaru\u010duj\u00edc\u00edho trvale stejnou v\u00fdkonnost.<\/p>\n

    Objevte r\u016fzn\u00e9 typy elektrick\u00fdch izol\u00e1tor\u016f.<\/p>\n

    Jak\u00e9 elektrick\u00e9 izol\u00e1tory odol\u00e1vaj\u00ed teplu?
    \n<\/h2>\n

    4 typy elektrick\u00fdch izol\u00e1tor\u016f nab\u00edzej\u00ed zaj\u00edmavou tepelnou odolnost:<\/p>\n

    \u00a0<\/p>\n

    1. Polyestery<\/strong><\/h3>\n

    Samotn\u00e9 polyestery snesou provoz a\u017e do teploty 160 \u00b0C nebo i v\u00edce v z\u00e1vislosti na d\u00e9lce expozice. Normy uv\u00e1d\u011bj\u00ed 130 \u00b0C pro IEC a 105 \u00b0C pro UL. Nap\u0159\u00edklad polyester PET funguje dob\u0159e a\u017e do 105 \u00b0C a PEN lze pou\u017e\u00edvat i p\u0159i 160 \u00b0C.<\/p>\n

    \u00a0<\/p>\n

    2. Polyethylen<\/strong><\/h3>\n

    Polyethylen je dobr\u00fd izolant, ale nelze jej pou\u017e\u00edt p\u0159i teplot\u00e1ch nad 60 \u00b0C\/RTI UL continuous nebo 130 \u00b0C\/IEC.<\/p>\n

    \u00a0<\/p>\n

    3. Polyimid<\/strong><\/h3>\n

    Polyimid je nej\u00fa\u010dinn\u011bj\u0161\u00edm polymerem p\u0159i hled\u00e1n\u00ed dobr\u00e9 elektrick\u00e9 izolace p\u0159i vysok\u00fdch teplot\u00e1ch, proto\u017ee je schopen odol\u00e1vat v\u00edce ne\u017e 400 \u00b0C po dobu n\u011bkolika hodin. Nejzn\u00e1m\u011bj\u0161\u00ed zna\u010dkou polyimidu je Kapton, kter\u00fd je k dispozici ve form\u011b lepidel nebo rol\u00ed f\u00f3lie.<\/p>\n

    \u00a0<\/p>\n

    4. Tuh\u00e9 nebo pru\u017en\u00e9 materi\u00e1ly<\/strong><\/h3>\n

    Pro zlep\u0161en\u00ed tepeln\u00fdch vlastnost\u00ed je tak\u00e9 mo\u017en\u00e9 kombinovat v\u00fdhody n\u011bkolika materi\u00e1l\u016f. Nokamex Duplex je tedy tvo\u0159en sestavou dvou materi\u00e1l\u016f:<\/p>\n

      \n
    • Polyimidov\u00e1 f\u00f3lie Kapton pro teplotn\u00ed odolnost a izolaci;<\/li>\n
    • Aramidov\u00fd pap\u00edr Nomex pro zv\u00fd\u0161en\u00ed mechanick\u00e9 pevnosti;<\/li>\n<\/ul>\n

      \u00a0<\/p>\n

      Z\u00edskan\u00fd materi\u00e1l je tak vynikaj\u00edc\u00edm izolantem pou\u017eiteln\u00fdm p\u0159i vysok\u00fdch teplot\u00e1ch a s vysokou mechanickou odolnost\u00ed.<\/p>\n

      Schopnost elektrick\u00e9ho izolantu odol\u00e1vat teplu z\u00e1vis\u00ed na n\u011bkolika faktorech, nap\u0159\u00edklad na chemick\u00e9m slo\u017een\u00ed materi\u00e1lu. Polyimidy tak maj\u00ed teplotn\u00ed odolnost a\u017e 400 \u00b0C p\u0159i teplotn\u00edm maximu, zat\u00edmco polyethylen vysok\u00e9 teplot\u011b neodol\u00e1. Kombinace materi\u00e1l\u016f jsou nav\u00edc nekone\u010dn\u00e9.<\/p>\n

      Z\u00e1v\u011br<\/h2>\n

      Pro v\u00fdb\u011br spr\u00e1vn\u00e9ho elektrick\u00e9ho izolantu je t\u0159eba zn\u00e1t tepelnou t\u0159\u00eddu za\u0159\u00edzen\u00ed, kter\u00e9 m\u00e1 b\u00fdt chr\u00e1n\u011bno. V\u00fdb\u011br je pak ot\u00e1zkou kompromisu mezi ekonomick\u00fdmi, tepeln\u00fdmi a elektrick\u00fdmi krit\u00e9rii. Na\u0161i odborn\u00edci shrom\u00e1\u017edili v\u0161echny sv\u00e9 rady v elektronick\u00e9 knize o vysoce v\u00fdkonn\u00fdch materi\u00e1lech a elektrick\u00fdch izolac\u00edch!<\/p>","protected":false},"excerpt":{"rendered":"

      In addition\u00a0to\u00a0ensuring a dielectric function\u00a0, an insulating material must also have a temperature resistance corresponding to the conditions of use of the equipment to be protected.\u00a0This ability is characterized by the thermal class and must be specified in the specifications. What is the thermal class of electrotechnical equipment according to IEC 60085? The thermal class […]<\/p>\n","protected":false},"author":1,"featured_media":3421,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22],"tags":[],"class_list":["post-3413","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-marche"],"yoast_head":"\nChoosing the right electrical insulation for the thermal class of your equipment - ADDEV Materials Converting<\/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:\/\/addevmaterials.com\/converting\/cs\/vyber-spravne-elektricke-izolace-pro-tepelnou-tridu-vaseho-zarizeni\/\" \/>\n<meta property=\"og:locale\" content=\"cs_CZ\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Choosing the right electrical insulation for the thermal class of your equipment - ADDEV Materials Converting\" \/>\n<meta property=\"og:description\" content=\"In addition\u00a0to\u00a0ensuring a dielectric function\u00a0, an insulating material must also have a temperature resistance corresponding to the conditions of use of the equipment to be protected.\u00a0This ability is characterized by the thermal class and must be specified in the specifications. What is the thermal class of electrotechnical equipment according to IEC 60085? 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