![\"\"](\"https:\/\/led.amasly.com\/wp-content\/uploads\/2024\/12\/Explosion-proof-lights.jpg\" "\\"Svetl\u00e1")
<\/a><\/figure><\/div>\n\n\n\nV pr\u00edpade iskrovo bezpe\u010dn\u00fdch zariaden\u00ed sa pri n\u00edzkych teplot\u00e1ch zmenia v\u00fdkonnostn\u00e9 charakteristiky komponentov pou\u017e\u00edvan\u00fdch v iskrovo bezpe\u010dn\u00fdch zariadeniach, ako s\u00fa bezpe\u010dnostn\u00e9 bari\u00e9ry a zdroje nap\u00e1jania s obmedzen\u00edm iskier s dynamick\u00fdmi iskrovo bezpe\u010dn\u00fdmi komponentmi. Pri v\u00fdbere komponentov by sa tieto zmeny mali zoh\u013eadni\u0165 a hodnotenie by sa malo vykona\u0165 v s\u00falade s po\u017eiadavkami pr\u00edslu\u0161n\u00e9ho \u201cIskrovo bezpe\u010dn\u00e9ho zariadenia s ochranou \u2018i\u2019\u201d s pou\u017eit\u00edm prev\u00e1dzkovej teploty stanovenej v\u00fdrobcom. T\u00e1to menovit\u00e1 hodnota by mala zoh\u013ead\u0148ova\u0165 zmeny v prev\u00e1dzke polovodi\u010dov\u00fdch s\u00fa\u010diastok, ktor\u00e9 ovplyv\u0148uj\u00fa iskrovo bezpe\u010dn\u00e9 vlastnosti, aby sa zabezpe\u010dila po\u017eadovan\u00e1 iskrovo bezpe\u010dn\u00e1 funkcia. <\/p>\n\n\n\n
Iskrov\u00e1 bezpe\u010dnos\u0165 nap\u00e1jacieho zdroja s dynamick\u00fdmi iskrovo bezpe\u010dn\u00fdmi komponentmi pou\u017e\u00edvan\u00fdmi v tak\u00fdchto syst\u00e9moch z\u00e1vis\u00ed od teploty okolia v mieste pou\u017eitia. Pri n\u00edzkych teplot\u00e1ch sa zni\u017euje citlivos\u0165 dynamick\u00fdch polovodi\u010dov\u00fdch s\u00fa\u010diastok iskrovo bezpe\u010dn\u00e9ho nap\u00e1jacieho zdroja a zvy\u0161uje sa \u010das sp\u00ednania. Pr\u00edslu\u0161n\u00e9 predpisy stanovuj\u00fa, \u017ee sk\u00fa\u0161ka iskren\u00edm by sa mala vykona\u0165 v usporiadan\u00ed obvodu, ktor\u00e9 je najviac n\u00e1chyln\u00e9 na vznietenie. V praxi sa v\u0161ak sk\u00fa\u0161ky zvy\u010dajne vykon\u00e1vaj\u00fa pri laborat\u00f3rnych teplot\u00e1ch. <\/p>\n\n\n\n
Preto sa v pr\u00edpade syst\u00e9mov s iskrovo bezpe\u010dn\u00fdmi ochrann\u00fdmi zdrojmi nap\u00e1jania dynamick\u00e9ho charakteru v oblastiach s n\u00edzkymi teplotami mus\u00ed testova\u0165 iskrovo bezpe\u010dn\u00e1 funk\u010dnos\u0165 pri teplot\u00e1ch v rozsahu aplik\u00e1cie vr\u00e1tane najni\u017e\u0161ej teploty dynamick\u00fdch polovodi\u010dov\u00fdch s\u00fa\u010diastok a za podmienky, \u017ee zariadenie na testovanie iskier je pripojen\u00e9 k vhodnej z\u00e1\u0165a\u017ei pri najvy\u0161\u0161ej prev\u00e1dzkovej teplote. Polovodi\u010dov\u00e9 komponenty zabezpe\u010duj\u00face iskrovo bezpe\u010dn\u00fa ochranu pri teplote okolia ni\u017e\u0161ej ako -40 \u2103 si m\u00f4\u017eu vy\u017eadova\u0165 \u0161peci\u00e1lne vykurovacie syst\u00e9my. V pr\u00edpade zariaden\u00ed pou\u017e\u00edvan\u00fdch v chladnom morskom podneb\u00ed, hoci zariadenie sp\u013a\u0148a pr\u00edslu\u0161n\u00e9 vzdialenosti plazivej dr\u00e1hy a porovn\u00e1vac\u00ed index sledovania (CTI) izola\u010dn\u00fdch materi\u00e1lov, m\u00f4\u017ee by\u0165 potrebn\u00fd vy\u0161\u0161\u00ed stupe\u0148 ochrany ako IP54, aby sa zabezpe\u010dilo, \u017ee chloridov\u00e9 usadeniny na povrchu dosiek s plo\u0161n\u00fdmi spojmi nesp\u00f4sobia sledovanie.<\/p>","protected":false},"excerpt":{"rendered":"
Ambient temperatures below -20 \u2103 may affect the explosion-proof type of the equipment, and should be taken into account during equipment evaluation and testing. For intrinsically safe equipment, at low temperatures, the performance characteristics of components used in intrinsically safe equipment, such as safety barriers, and the spark-limited power supplies with dynamic intrinsically safe components […]<\/p>\n","protected":false},"author":1,"featured_media":1600,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[7],"tags":[],"class_list":["post-1610","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-light"],"uagb_featured_image_src":{"full":["https:\/\/led.amasly.com\/wp-content\/uploads\/2024\/12\/Explosion-proof-lights.jpg",1008,341,false],"thumbnail":["https:\/\/led.amasly.com\/wp-content\/uploads\/2024\/12\/Explosion-proof-lights-150x150.jpg",150,150,true],"medium":["https:\/\/led.amasly.com\/wp-content\/uploads\/2024\/12\/Explosion-proof-lights-300x101.jpg",300,101,true],"medium_large":["https:\/\/led.amasly.com\/wp-content\/uploads\/2024\/12\/Explosion-proof-lights-768x260.jpg",768,260,true],"large":["https:\/\/led.amasly.com\/wp-content\/uploads\/2024\/12\/Explosion-proof-lights.jpg",1008,341,false],"1536x1536":["https:\/\/led.amasly.com\/wp-content\/uploads\/2024\/12\/Explosion-proof-lights.jpg",1008,341,false],"2048x2048":["https:\/\/led.amasly.com\/wp-content\/uploads\/2024\/12\/Explosion-proof-lights.jpg",1008,341,false],"trp-custom-language-flag":["https:\/\/led.amasly.com\/wp-content\/uploads\/2024\/12\/Explosion-proof-lights.jpg",18,6,false]},"uagb_author_info":{"display_name":"Joe","author_link":"https:\/\/led.amasly.com\/sk\/author\/jacklin\/"},"uagb_comment_info":0,"uagb_excerpt":"Ambient temperatures below -20 \u2103 may affect the explosion-proof type of the equipment, and should be taken into account during equipment evaluation and testing. For intrinsically safe equipment, at low temperatures, the performance characteristics of components used in intrinsically safe equipment, such as safety barriers, and the spark-limited power supplies with dynamic intrinsically safe components…","_links":{"self":[{"href":"https:\/\/led.amasly.com\/sk\/wp-json\/wp\/v2\/posts\/1610","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/led.amasly.com\/sk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/led.amasly.com\/sk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/led.amasly.com\/sk\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/led.amasly.com\/sk\/wp-json\/wp\/v2\/comments?post=1610"}],"version-history":[{"count":1,"href":"https:\/\/led.amasly.com\/sk\/wp-json\/wp\/v2\/posts\/1610\/revisions"}],"predecessor-version":[{"id":1611,"href":"https:\/\/led.amasly.com\/sk\/wp-json\/wp\/v2\/posts\/1610\/revisions\/1611"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/led.amasly.com\/sk\/wp-json\/wp\/v2\/media\/1600"}],"wp:attachment":[{"href":"https:\/\/led.amasly.com\/sk\/wp-json\/wp\/v2\/media?parent=1610"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/led.amasly.com\/sk\/wp-json\/wp\/v2\/categories?post=1610"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/led.amasly.com\/sk\/wp-json\/wp\/v2\/tags?post=1610"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}