{"id":728,"date":"2011-08-25T12:40:53","date_gmt":"2011-08-25T10:40:53","guid":{"rendered":"http:\/\/www.zsvltava.cz\/fyzika\/?p=728"},"modified":"2025-01-10T23:02:46","modified_gmt":"2025-01-10T22:02:46","slug":"pojistky-v-elektrickem-obvodu","status":"publish","type":"post","link":"https:\/\/www.zsvltava.cz\/fyzika\/?p=728","title":{"rendered":"Pojistky v elektrick\u00e9m obvodu"},"content":{"rendered":"<p><strong>Pojistky jsou d\u016fle\u017eitou sou\u010d\u00e1st\u00ed elektrick\u00e9ho obvodu. \u00dakolem pojistek je chr\u00e1nit sou\u010d\u00e1sti elektrick\u00e9ho obvodu. V p\u0159\u00edpad\u011b, \u017ee by z n\u011bjak\u00e9ho d\u016fvodu do\u0161lo k nadm\u011brn\u00e9mu zv\u00fd\u0161en\u00ed elektrick\u00e9ho proudu v obvodu na hodnotu, kter\u00e1 by mohla po\u0161kodit p\u0159ipojen\u00e9 za\u0159\u00edzen\u00ed, pojistka se zni\u010d\u00ed a obvod p\u0159eru\u0161\u00ed. <\/strong><\/p>\n<p>P\u0159\u00ed\u010diny zv\u00fd\u0161en\u00ed elektrick\u00e9ho proudu mohou b\u00fdt r\u016fzn\u00e9. P\u0159eh\u0159\u00edv\u00e1n\u00ed sou\u010d\u00e1stek, opot\u0159ebov\u00e1n\u00ed, \u0161patn\u00e9 zapojen\u00ed a nebo ZKRAT. Ten nastane, kdy\u017e elektrick\u00e9mu proudu cestou od zdroje nestoj\u00ed v cest\u011b \u017e\u00e1dn\u00fd odpor. <\/p>\n<h2>Jak vypad\u00e1 pojistka?<\/h2>\n<p>Pojistku tvo\u0159\u00ed tenk\u00fd dr\u00e1t, kter\u00fd vydr\u017e\u00ed jen ur\u010ditou hodnotu proudu. V p\u0159\u00edpad\u011b, \u017ee by j\u00edm cht\u011blo prot\u00e9kat v\u00edce elektron\u016f, nevydr\u017e\u00ed tento n\u00e1por, roz\u017ehav\u00ed se a prskne. Nike Baratas Nike Air Yeezy 2 T\u00edm p\u0159eru\u0161\u00ed elektrick\u00fd obvod. <\/p>\n<h3>Pojistka do spot\u0159ebi\u010d\u016f<\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.zsvltava.cz\/fyzika\/wp-content\/uploads\/2011\/05\/pojistka-mala.jpg\" alt=\"\" width=\"400\" height=\"336\" class=\"aligncenter size-full wp-image-731\" srcset=\"https:\/\/www.zsvltava.cz\/fyzika\/wp-content\/uploads\/2011\/05\/pojistka-mala.jpg 400w, https:\/\/www.zsvltava.cz\/fyzika\/wp-content\/uploads\/2011\/05\/pojistka-mala-300x252.jpg 300w, https:\/\/www.zsvltava.cz\/fyzika\/wp-content\/uploads\/2011\/05\/pojistka-mala-150x126.jpg 150w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/p>\n<p>Tento typ pojistky najdeme obvykle uvnit\u0159 elektrospot\u0159ebi\u010d\u016f. Dr\u00e1t je obalen sklen\u011bnou ba\u0148kou aby bylo vid\u011bt zda je v po\u0159\u00e1dku. Pojistka je namontov\u00e1na tak, aby ji bylo mo\u017eno vym\u011bnit. <\/p>\n<h3>Keramick\u00e1 pojistka<\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.zsvltava.cz\/fyzika\/wp-content\/uploads\/2011\/05\/pojistka-keramick\u00e1.jpg\" alt=\"\" width=\"400\" height=\"400\" class=\"aligncenter size-full wp-image-732\" srcset=\"https:\/\/www.zsvltava.cz\/fyzika\/wp-content\/uploads\/2011\/05\/pojistka-keramick\u00e1.jpg 400w, https:\/\/www.zsvltava.cz\/fyzika\/wp-content\/uploads\/2011\/05\/pojistka-keramick\u00e1-150x150.jpg 150w, https:\/\/www.zsvltava.cz\/fyzika\/wp-content\/uploads\/2011\/05\/pojistka-keramick\u00e1-300x300.jpg 300w, https:\/\/www.zsvltava.cz\/fyzika\/wp-content\/uploads\/2011\/05\/pojistka-keramick\u00e1-64x64.jpg 64w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/p>\n<p>Keramick\u00e1 pojistka se pou\u017e\u00edv\u00e1 tam, kde se o\u010dek\u00e1vaj\u00ed vysok\u00e9 proudy. Neho\u0159lav\u00fd keramick\u00fd obal a p\u00edsek, kter\u00fd je uvnit\u0159, maj\u00ed za \u00fakol roz\u017ehaven\u00fd dr\u00e1t schladit a p\u0159\u00edpadn\u011b uhasit.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Pojistky jsou d\u016fle\u017eitou sou\u010d\u00e1st\u00ed elektrick\u00e9ho obvodu. \u00dakolem pojistek je chr\u00e1nit sou\u010d\u00e1sti elektrick\u00e9ho obvodu. V p\u0159\u00edpad\u011b, \u017ee by z n\u011bjak\u00e9ho d\u016fvodu do\u0161lo k nadm\u011brn\u00e9mu zv\u00fd\u0161en\u00ed elektrick\u00e9ho &#8230;. <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[57],"tags":[31,3],"class_list":["post-728","post","type-post","status-publish","format-standard","hentry","category-6-rocnik","tag-elektricky-obvod","tag-elektrina"],"_links":{"self":[{"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=\/wp\/v2\/posts\/728","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=728"}],"version-history":[{"count":0,"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=\/wp\/v2\/posts\/728\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=728"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=728"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=728"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}