{"id":1863,"date":"2025-01-25T09:25:42","date_gmt":"2025-01-25T09:25:42","guid":{"rendered":"https:\/\/www.mingchele.com\/?p=1863"},"modified":"2025-02-13T02:52:23","modified_gmt":"2025-02-13T02:52:23","slug":"why-transformer-are-rated-in-kva-instead-of-kw","status":"publish","type":"post","link":"https:\/\/www.mingchele.com\/cs\/blog\/transformer\/why-transformer-are-rated-in-kva-instead-of-kw\/","title":{"rendered":"Pro\u010d jsou transform\u00e1tory hodnoceny v kVA m\u00edsto v kW: znalostn\u00ed b\u00e1ze o hodnocen\u00ed transform\u00e1tor\u016f"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_86 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Obsah<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"P\u0159epnout obsah\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">P\u0159epnout<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.mingchele.com\/cs\/blog\/transformer\/why-transformer-are-rated-in-kva-instead-of-kw\/#A_Quick_Review_of_Transformers\" >Rychl\u00fd p\u0159ehled Transformers<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.mingchele.com\/cs\/blog\/transformer\/why-transformer-are-rated-in-kva-instead-of-kw\/#So_How_Are_Transformers_Rated\" >Jak jsou tedy transform\u00e1tory hodnoceny?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.mingchele.com\/cs\/blog\/transformer\/why-transformer-are-rated-in-kva-instead-of-kw\/#What_Is_kVA_on_a_Transformer_What_Really_Does_kVA_Mean\" >Co je kVA na transform\u00e1toru? Co doopravdy znamen\u00e1 kVA?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.mingchele.com\/cs\/blog\/transformer\/why-transformer-are-rated-in-kva-instead-of-kw\/#Why_Are_Transformer_kVA_Ratings_That_Way_and_Not_in_kW\" >Pro\u010d jsou hodnoty kVA transform\u00e1toru takov\u00e9 a ne v kW?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.mingchele.com\/cs\/blog\/transformer\/why-transformer-are-rated-in-kva-instead-of-kw\/#Setting_the_Scene\" >Nastaven\u00ed sc\u00e9ny<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.mingchele.com\/cs\/blog\/transformer\/why-transformer-are-rated-in-kva-instead-of-kw\/#2_Major_Reasons_Behind_This_Rating\" >2 hlavn\u00ed d\u016fvody tohoto hodnocen\u00ed<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.mingchele.com\/cs\/blog\/transformer\/why-transformer-are-rated-in-kva-instead-of-kw\/#Conclusion\" >Z\u00e1v\u011br<\/a><\/li><\/ul><\/nav><\/div>\n\n<p class=\"wp-block-paragraph\">N\u00e1v\u0161t\u011bva obchod\u016f s pr\u016fmyslov\u00fdmi transform\u00e1tory, jejich nakupov\u00e1n\u00ed a hled\u00e1n\u00ed t\u011bch nejhospod\u00e1rn\u011bj\u0161\u00edch v\u00e1m s nejv\u011bt\u0161\u00ed pravd\u011bpodobnost\u00ed uk\u00e1\u017ee jejich hodnocen\u00ed v kVA nebo kilovolt-amp\u00e9rech, sp\u00ed\u0161e ne\u017e ve zn\u00e1m\u011bj\u0161\u00edch kW nebo kilowattech. pro\u010d tomu tak je? Jednodu\u0161e, je to nejvhodn\u011bj\u0161\u00ed hodnocen\u00ed, aby tyto transform\u00e1tory dob\u0159e fungovaly.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">P\u0159e\u010dt\u011bte si tuto znalostn\u00ed datab\u00e1zi a pr\u016fvodce, abyste se dozv\u011bd\u011bli v\u00edce o zd\u016fvodn\u011bn\u00ed tohoto rozd\u00edlu, kdy\u017e budete zkoumat n\u00e1sleduj\u00edc\u00ed ukazatele:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u2013 Transform\u00e1tory v kostce<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u2013 Jak se hodnot\u00ed transform\u00e1tor?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u2013 Co je kVA?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u2013 Pro\u010d jsou transform\u00e1tory dimenzov\u00e1ny v kVA m\u00edsto v kW?<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"A_Quick_Review_of_Transformers\"><\/span><strong>Rychl\u00fd p\u0159ehled Transformers<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Nejobl\u00edben\u011bj\u0161\u00ed typy transform\u00e1tor\u016f jsou ty, kter\u00e9 se pou\u017e\u00edvaj\u00ed pro obytn\u00e9 nebo pr\u016fmyslov\u00e9 \u00fa\u010dely. Tato znalostn\u00ed b\u00e1ze se zab\u00fdv\u00e1 pr\u016fmyslov\u00fdmi transform\u00e1tory.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Transform\u00e1tory pou\u017e\u00edvan\u00e9 v pr\u016fmyslu jsou zodpov\u011bdn\u00e9 za zm\u011bnu nap\u011bt\u00ed st\u0159\u00eddav\u00e9ho proudu proud\u00edc\u00edho z jednoho elektrick\u00e9ho obvodu do druh\u00e9ho prost\u0159ednictv\u00edm elektromagnetick\u00e9 indukce nebo za vytv\u00e1\u0159en\u00ed elektromotorick\u00e9 s\u00edly p\u0159es elektrick\u00fd vodi\u010d.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u0161imn\u011bte si, \u017ee nap\u0159\u00edklad \u010d\u00e1st pr\u016fmyslov\u00e9ho za\u0159\u00edzen\u00ed m\u016f\u017ee b\u011b\u017eet bez transform\u00e1tor\u016f. Ale je nejlep\u0161\u00ed je m\u00edt, proto\u017ee:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Dod\u00e1vejte pot\u0159ebn\u00e9 \u00farovn\u011b nap\u011bt\u00ed a proudu pro t\u011b\u017ek\u00e9 stroje<\/li>\n\n\n\n<li>Zajist\u011bte \u0159\u00e1dn\u00fd provoz a \u00fa\u010dinnost t\u011bchto za\u0159\u00edzen\u00ed, mimo jin\u00e9 drobn\u00e9 v\u00fdhody<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"So_How_Are_Transformers_Rated\"><\/span><strong>Jak jsou tedy transform\u00e1tory hodnoceny?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Za prv\u00e9, ne\u017e jsou transform\u00e1tory dimenzov\u00e1ny, jsou dimenzov\u00e1ny s ohledem na n\u00e1sleduj\u00edc\u00ed faktory:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Popt\u00e1vka po zat\u00ed\u017een\u00ed<\/li>\n\n\n\n<li>\u00darovn\u011b nap\u011bt\u00ed<\/li>\n\n\n\n<li>\u00da\u010din\u00edk<\/li>\n\n\n\n<li>\u00da\u010dinnost<\/li>\n\n\n\n<li>P\u0159et\u00ed\u017eitelnost<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Jakmile je dimenzov\u00e1n\u00ed transform\u00e1toru ur\u010deno z t\u011bchto faktor\u016f, je pak hodnoceno hlavn\u011b z kapacity pot\u0159ebn\u00e9 k tomu, aby zvl\u00e1dl nap\u00e1jen\u00ed v elektrick\u00e9m syst\u00e9mu, do kter\u00e9ho je instalov\u00e1n. Jak je transform\u00e1tor dimenzov\u00e1n, je vyj\u00e1d\u0159en v kVA ve vztahu k tomu, kolik dok\u00e1\u017ee zvl\u00e1dnout v\u00fdkon syst\u00e9mu.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_Is_kVA_on_a_Transformer_What_Really_Does_kVA_Mean\"><\/span><strong>Co je kVA na transform\u00e1toru? Co doopravdy znamen\u00e1 kVA?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">V z\u00e1sad\u011b \u0159e\u010deno, kilovolt-amp\u00e9rov\u00e9 hodnoty jsou jednotky pro zd\u00e1nliv\u00fd v\u00fdkon nebo sou\u010din amp\u00e9r\u016f a volt\u016f. Jin\u00fdmi slovy, kVA m\u011b\u0159\u00ed nebo hodnot\u00ed celkov\u00e9 mno\u017estv\u00ed energie, kterou elektrick\u00fd syst\u00e9m pou\u017e\u00edv\u00e1.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pamatujte: jeden kVA se rovn\u00e1 1 000 voltamp\u00e9r\u016fm. Pro\u010d se kVA nerovn\u00e1 kW, pt\u00e1te se? Jednodu\u0161e \u0159e\u010deno, zat\u00edmco kVA m\u011b\u0159\u00ed zd\u00e1nliv\u00fd v\u00fdkon, druh\u00fd m\u011b\u0159\u00ed skute\u010dn\u00fd vyu\u017eiteln\u00fd v\u00fdkon.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Why_Are_Transformer_kVA_Ratings_That_Way_and_Not_in_kW\"><\/span><strong>Pro\u010d jsou hodnoty kVA transform\u00e1toru takov\u00e9 a ne v kW?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Setting_the_Scene\"><\/span><strong>Nastaven\u00ed sc\u00e9ny<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Pr\u016fmyslov\u00e9 p\u0159enosy jsou hodnoceny v kVA m\u00edsto v kW, proto\u017ee jejich tepeln\u00e9 ztr\u00e1ty jsou ukotveny na zd\u00e1nliv\u00e9m v\u00fdkonu \u2013 zejm\u00e9na voltamp\u00e9rech \u2013 nam\u00edsto \u00fa\u010din\u00edku. Op\u011bt plat\u00ed, \u017ee elektrick\u00e9 jmenovit\u00e9 hodnoty kVA pro transform\u00e1tory odr\u00e1\u017eej\u00ed schopnost transform\u00e1toru zvl\u00e1dnout zd\u00e1nliv\u00fd v\u00fdkon, ale tvo\u0159\u00ed aktivn\u00ed (kW) i reaktivn\u00ed (kVAR) slo\u017eky. Ty zaji\u0161\u0165uj\u00ed spolehlivost v\u00fdkonu i p\u0159i r\u016fzn\u00e9m zat\u00ed\u017een\u00ed a \u00fa\u010din\u00edku. P\u0159i pou\u017eit\u00ed tohoto jmenovit\u00e9ho v\u00fdkonu se transform\u00e1tor kVA st\u00e1v\u00e1 v\u0161estrann\u00fdm.&nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_Major_Reasons_Behind_This_Rating\"><\/span><strong>2 hlavn\u00ed d\u016fvody tohoto hodnocen\u00ed<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Existuj\u00ed pouze dva d\u016fvody, kter\u00e9 vstupuj\u00ed do hry, pro\u010d jsou pr\u016fmyslov\u00e9 transform\u00e1tory, stejn\u011b jako dal\u0161\u00ed varianty, takto hodnoceny.&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u00da\u010dtov\u00e1n\u00ed zd\u00e1nliv\u00e9 s\u00edly<\/strong>: S elektrick\u00fdm jmenovit\u00fdm v\u00fdkonem kVA jsou vylou\u010deny ztr\u00e1ty v m\u011bdi a \u017eeleze odpov\u011bdn\u00e9 za oh\u0159ev. M\u011bjte v\u0161ak na pam\u011bti, \u017ee tyto ztr\u00e1ty jsou nez\u00e1visl\u00e9 na \u00fa\u010din\u00edku.<\/li>\n\n\n\n<li><strong>Pro manipulaci s r\u016fzn\u00fdmi z\u00e1t\u011b\u017eemi<\/strong>: Transform\u00e1tory dimenzovan\u00e9 pomoc\u00ed kVA tak\u00e9 zaru\u010duj\u00ed, \u017ee zvl\u00e1dnou r\u016fzn\u00e9 z\u00e1t\u011b\u017ee i s odli\u0161n\u00fdmi \u00fa\u010din\u00edky, co\u017e d\u00e1le zaji\u0161\u0165uje bezpe\u010dnost b\u011bhem provozu. Pamatujte, \u017ee kW odr\u00e1\u017e\u00ed pouze \u010dinn\u00fd v\u00fdkon.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span><strong>Z\u00e1v\u011br<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Pro\u010d jsou tedy transform\u00e1tory dimenzov\u00e1ny v kVA m\u00edsto v kW? Je to proto, aby se zajistilo, \u017ee transform\u00e1tor bude pracovat na sv\u00e9m vrcholu a bude bezpe\u010dn\u00fd po celou dobu, kdy jej pou\u017e\u00edv\u00e1te, spolu se za\u0159\u00edzen\u00edm, kter\u00e9mu slou\u017e\u00ed.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Hled\u00e1te transform\u00e1tory, kter\u00e9 dok\u00e1\u017eou splnit v\u0161echny po\u017eadavky va\u0161eho oboru? Zva\u017ete jejich z\u00edsk\u00e1n\u00ed od spole\u010dnosti Mingch, sv\u011btov\u00e9ho l\u00eddra ve v\u00fdrob\u011b elektrick\u00fdch za\u0159\u00edzen\u00ed a p\u0159\u00edslu\u0161enstv\u00ed. <a href=\"https:\/\/www.mingchele.com\/cs\/kategorie-produktu\/power-transformer-transformer\/transformer\/\">Transform\u00e1tory Mingch<\/a> pro\u0161ly p\u0159\u00edsnou kontrolou, v\u00fdzkumem a v\u00fdvojem, v\u00fdrobou a balen\u00edm, aby dokonale poskytly podporu, kterou pot\u0159ebujete pro sv\u00e1 pr\u016fmyslov\u00e1 odv\u011btv\u00ed. Pro v\u00edce informac\u00ed <a href=\"https:\/\/www.mingchele.com\/cs\/contact\/\">kontaktujte je je\u0161t\u011b dnes<\/a>nebo <a href=\"https:\/\/www.mingchele.com\/cs\/blog\/\">p\u0159e\u010dt\u011bte si nejnov\u011bj\u0161\u00ed aktualizace<\/a> na jejich blogu.<\/p>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>Zdroje \u010dl\u00e1nku<\/summary>\n<ol class=\"wp-block-list\">\n<li>Pro\u010d je v\u00fdkon transform\u00e1toru v kVA m\u00edsto v kW? \u2013 Schneider Electric (<a href=\"https:\/\/eshop.se.com\/in\/blog\/post\/why-is-the-transformer-rating-in-kva-instead-of-kw.html?srsltid=AfmBOoozECCIz1nHpqw-19YV0xUf7q1WY_R46B0cv_Aj9nkwtd9feI8Q\">1<\/a>)<\/li>\n\n\n\n<li>Pro\u010d je transform\u00e1tor dimenzov\u00e1n v kVA, nikoli v KW? (<a href=\"https:\/\/www.vedantu.com\/question-answer\/transformer-rated-in-kva-not-in-kw-class-12-physics-cbse-60e08fac34a38468a5e98773\">2<\/a>)<\/li>\n\n\n\n<li>Z\u00e1kladn\u00ed znalosti o pou\u017eit\u00ed transform\u00e1tor\u016f | Daelim Transformer (<a href=\"https:\/\/www.daelimtransformer.com\/use-of-transformers.html#:~:text=Industrial%20Machinery%3A%20Transformers%20supply%20the,their%20proper%20operation%20and%20efficiency.\">3<\/a>)<\/li>\n<\/ol>\n<\/details>","protected":false},"excerpt":{"rendered":"<p>Visiting industrial transformers supplies stores, shopping for them, and canvassing the most cost-efficient will most<span class=\"excerpt-hellip\"> [\u2026]<\/span><\/p>\n","protected":false},"author":1,"featured_media":1852,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[45],"tags":[],"class_list":["post-1863","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-transformer"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Why Transformers Are Rated in kVA Instead of kW<\/title>\n<meta name=\"description\" content=\"Explore Mingch&#039;s insights on Why Transformers Are Rated in kVA Instead of kW: A Knowledge Base on Transformer Ratings .\" \/>\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.mingchele.com\/cs\/blog\/transformer\/why-transformer-are-rated-in-kva-instead-of-kw\/\" \/>\n<meta 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