{"id":17593,"date":"2023-08-06T17:04:13","date_gmt":"2023-08-06T16:04:13","guid":{"rendered":"http:\/\/www.crowave.com\/blog\/?p=17593"},"modified":"2023-08-06T17:04:13","modified_gmt":"2023-08-06T16:04:13","slug":"podnaponski-relej-iskra-ur-2","status":"publish","type":"post","link":"https:\/\/www.crowave.com\/blog\/2023\/08\/06\/podnaponski-relej-iskra-ur-2\/","title":{"rendered":"Podnaponski relej Iskra UR 2"},"content":{"rendered":"<p>Danas je nabavljen naponski nadzorni relej oznake UR 2, slovenskog proizvo\u0111a\u010da Iskra iz 1964. godine. Tvrtka Iskra vu\u010de korijene iz 1946. godine te je i danas prisutna na tr\u017ei\u0161tu. Kroz \u010ditavo razdoblje postojanja nudi \u0161irok spektar proizvoda iz podru\u010dja elektronike, elektrotehnike, telekomunikacija, energetike, automatizacije i tome srodnih proizvodnih grana.<\/p>\n<p>&nbsp;<\/p>\n<p><a href=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2023\/08\/naponski_relej_iskra_ur2_01.jpg\" rel=\"lightbox[17593]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-17594\" src=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2023\/08\/naponski_relej_iskra_ur2_01.jpg\" alt=\"\" width=\"1000\" height=\"1224\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2023\/08\/naponski_relej_iskra_ur2_01.jpg 1000w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2023\/08\/naponski_relej_iskra_ur2_01-768x940.jpg 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2023\/08\/naponski_relej_iskra_ur2_02.jpg\" rel=\"lightbox[17593]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-17595\" src=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2023\/08\/naponski_relej_iskra_ur2_02.jpg\" alt=\"\" width=\"1300\" height=\"485\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2023\/08\/naponski_relej_iskra_ur2_02.jpg 1300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2023\/08\/naponski_relej_iskra_ur2_02-768x287.jpg 768w\" sizes=\"auto, (max-width: 1300px) 100vw, 1300px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2023\/08\/naponski_relej_iskra_ur2_04.jpg\" rel=\"lightbox[17593]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-17597\" src=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2023\/08\/naponski_relej_iskra_ur2_04.jpg\" alt=\"\" width=\"1300\" height=\"310\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2023\/08\/naponski_relej_iskra_ur2_04.jpg 1300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2023\/08\/naponski_relej_iskra_ur2_04-768x183.jpg 768w\" sizes=\"auto, (max-width: 1300px) 100vw, 1300px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2023\/08\/naponski_relej_iskra_ur2_11.jpg\" rel=\"lightbox[17593]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-17604\" src=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2023\/08\/naponski_relej_iskra_ur2_11.jpg\" alt=\"\" width=\"400\" height=\"443\" \/><\/a><\/p>\n<p><a href=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2023\/08\/naponski_relej_iskra_ur2_03.jpg\" rel=\"lightbox[17593]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-17596\" src=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2023\/08\/naponski_relej_iskra_ur2_03.jpg\" alt=\"\" width=\"800\" height=\"334\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2023\/08\/naponski_relej_iskra_ur2_03.jpg 800w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2023\/08\/naponski_relej_iskra_ur2_03-768x321.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p>Podnaponski relej Iskra UR 2 slu\u017ei za isklju\u010divanje mre\u017enog napona prema tro\u0161ilu ukoliko isti padne ispod neke vrijednosti. U na\u0161em slu\u010daju ta vrijednost napona se mo\u017ee namjestiti u rasponu 120-220 V. Ovakvim relejom se \u0161tite mre\u017eni elektri\u010dni aparati i ure\u0111aji od kvarova koji bi nastati uslijed preniskog napona napajanja.<\/p>\n<p>&nbsp;<\/p>\n<p><a href=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2023\/08\/naponski_relej_iskra_ur2_09.jpg\" rel=\"lightbox[17593]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-17602\" src=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2023\/08\/naponski_relej_iskra_ur2_09.jpg\" alt=\"\" width=\"1300\" height=\"1575\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2023\/08\/naponski_relej_iskra_ur2_09.jpg 1300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2023\/08\/naponski_relej_iskra_ur2_09-768x930.jpg 768w\" sizes=\"auto, (max-width: 1300px) 100vw, 1300px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2023\/08\/naponski_relej_iskra_ur2_05.jpg\" rel=\"lightbox[17593]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-17598\" src=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2023\/08\/naponski_relej_iskra_ur2_05.jpg\" alt=\"\" width=\"1300\" height=\"558\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2023\/08\/naponski_relej_iskra_ur2_05.jpg 1300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2023\/08\/naponski_relej_iskra_ur2_05-768x330.jpg 768w\" sizes=\"auto, (max-width: 1300px) 100vw, 1300px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2023\/08\/naponski_relej_iskra_ur2_06.jpg\" rel=\"lightbox[17593]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-17599\" src=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2023\/08\/naponski_relej_iskra_ur2_06.jpg\" alt=\"\" width=\"1300\" height=\"530\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2023\/08\/naponski_relej_iskra_ur2_06.jpg 1300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2023\/08\/naponski_relej_iskra_ur2_06-768x313.jpg 768w\" sizes=\"auto, (max-width: 1300px) 100vw, 1300px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2023\/08\/naponski_relej_iskra_ur2_10.jpg\" rel=\"lightbox[17593]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-17603\" src=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2023\/08\/naponski_relej_iskra_ur2_10.jpg\" alt=\"\" width=\"1300\" height=\"435\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2023\/08\/naponski_relej_iskra_ur2_10.jpg 1300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2023\/08\/naponski_relej_iskra_ur2_10-768x257.jpg 768w\" sizes=\"auto, (max-width: 1300px) 100vw, 1300px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2023\/08\/naponski_relej_iskra_ur2_08.jpg\" rel=\"lightbox[17593]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-17601\" src=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2023\/08\/naponski_relej_iskra_ur2_08.jpg\" alt=\"\" width=\"1300\" height=\"351\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2023\/08\/naponski_relej_iskra_ur2_08.jpg 1300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2023\/08\/naponski_relej_iskra_ur2_08-768x207.jpg 768w\" sizes=\"auto, (max-width: 1300px) 100vw, 1300px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p>Iskra UR 2 je konstrukcijski doslovno relej predvi\u0111en za mre\u017eni napon. Kontakti releja su isklju\u010deni kada na svitku nema napona ili je isti ni\u017ei od postavljenog praga. Regulacija praga isklju\u010dena pode\u0161ava se mehani\u010dki, ja\u010dim ili slabijim zatezanjem opruge koja djeluje kao protusila privla\u010denju kotve releja. Kontakti releja vjerojatno mogu izdr\u017eati struju od minimalno 10 A.<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: center;\"><a href=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2023\/08\/naponski_relej_iskra_ur2_07.jpg\" rel=\"lightbox[17593]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-17600\" src=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2023\/08\/naponski_relej_iskra_ur2_07.jpg\" alt=\"\" width=\"1300\" height=\"387\" srcset=\"http:\/\/crowave.com\/blog\/wp-content\/uploads\/2023\/08\/naponski_relej_iskra_ur2_07.jpg 1300w, http:\/\/crowave.com\/blog\/wp-content\/uploads\/2023\/08\/naponski_relej_iskra_ur2_07-768x229.jpg 768w\" sizes=\"auto, (max-width: 1300px) 100vw, 1300px\" \/><\/a><span style=\"color: #00ffff;\"><em>Kontakti releja spregnuti sa kotvom (lijevo) i mehanizam zapinjanja opruge kotve \u010dime se pove\u0107ava ili smanjuje napon potreban za njeno privla\u010denje.<\/em> <\/span><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>U 1960-tim godinama elektrodistribucijska mre\u017ea jo\u0161 nije bila dovoljno razvijena i postoje\u0107a mre\u017ea je te\u0161ko pratila sve ve\u0107u koli\u010dinu elektri\u010dnih ure\u0111aja za doma\u0107instva i industrije. Stoga padovi mre\u017enog napona u razdobljima najve\u0107e potro\u0161nje struje nisu bili rijetkost. Me\u0111utim, moderne ina\u010dice ovakvih releja su i danas u \u0161irokoj upotrebi. Takvi releji se zovu nadzorni ili monitoring releji te mogu biti za nadzor napona, struje ili frekvencije. U trofaznim sistemima pak se koriste releji za kontrolu asimetrije i redoslijeda faza te izostanak (nestanak) pojedine faze. Sve ovo su za\u0161titni elementi za odre\u0111ena tro\u0161ila koja su osjetljiva na previsoke ili preniske napone ili struje, na ispad pojedine faze, ili na redoslijed spajanja faza kod prenosivih trofaznih tro\u0161ila. Ovisno o funkciji, releji mogu trenutno isklju\u010diti tro\u0161ilo iz mre\u017ee u slu\u010daju detekcije nekog kvara ili se isklju\u010denje mo\u017ee podesiti sa nekom vremenskim odmakom (ne reagiraju na kratkotrajne smetnje).<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Danas je nabavljen naponski nadzorni relej oznake UR 2, slovenskog proizvo\u0111a\u010da Iskra iz 1964. godine. Tvrtka Iskra vu\u010de korijene iz 1946. godine te je i danas prisutna na tr\u017ei\u0161tu. Kroz \u010ditavo razdoblje postojanja nudi \u0161irok spektar proizvoda iz podru\u010dja elektronike, elektrotehnike, telekomunikacija, energetike, automatizacije i tome srodnih proizvodnih grana. &nbsp; &nbsp; Podnaponski relej Iskra UR [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":17594,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[58],"tags":[],"class_list":{"0":"post-17593","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-sklopke","8":"czr-hentry"},"jetpack_featured_media_url":"https:\/\/crowave.com\/blog\/wp-content\/uploads\/2023\/08\/naponski_relej_iskra_ur2_01.jpg","_links":{"self":[{"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/posts\/17593","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/comments?post=17593"}],"version-history":[{"count":1,"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/posts\/17593\/revisions"}],"predecessor-version":[{"id":17605,"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/posts\/17593\/revisions\/17605"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/media\/17594"}],"wp:attachment":[{"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/media?parent=17593"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/categories?post=17593"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.crowave.com\/blog\/wp-json\/wp\/v2\/tags?post=17593"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}