{"id":1521,"date":"2026-10-20T21:57:00","date_gmt":"2026-10-20T18:57:00","guid":{"rendered":"https:\/\/inteq.lt\/kietakune-ssr-rele-ausinimas-klaidos\/"},"modified":"2026-10-20T21:57:00","modified_gmt":"2026-10-20T18:57:00","slug":"kietakune-ssr-rele-ausinimas-klaidos","status":"publish","type":"post","link":"https:\/\/inteq.lt\/en\/kietakune-ssr-rele-ausinimas-klaidos\/","title":{"rendered":"Solid-state relay (SSR): advantages, cooling and common mistakes"},"content":{"rendered":"<p>Kietak\u016bn\u0117 (puslaidininkin\u0117, angl. <em>solid state relay<\/em>, SSR) rel\u0117 neturi judan\u010di\u0173 kontakt\u0173 \u2013 apkrov\u0105 perjungia tiristoriai, simistorius arba tranzistoriai. Ji tyli, nesid\u0117vi ir gali perjungti labai da\u017enai, tod\u0117l pla\u010diai naudojama kaitinimo valdymui, ekstruderiuose, pakavimo ma\u0161inose, krosnyse. Ta\u010diau SSR turi sav\u0173 ypatum\u0173, kuri\u0173 ne\u017einant ji perkaista arba nei\u0161sijungia. \u017demiau \u2013 kas svarbu renkantis ir montuojant.<\/p>\n<h2>Privalumai, palyginti su elektromagnetine rele<\/h2>\n<ul>\n<li><strong>N\u0117ra kontakt\u0173 d\u0117v\u0117jimosi<\/strong> \u2013 tinka da\u017enam perjungimui (pvz. PID temperat\u016bros reguliavimui kas kelias sekundes).<\/li>\n<li><strong>Be kibirk\u0161\u010di\u0173 ir lanko<\/strong> \u2013 ma\u017eiau elektromagnetini\u0173 trukd\u017ei\u0173.<\/li>\n<li><strong>Tyli<\/strong> ir atspari vibracijai.<\/li>\n<li><strong>Ma\u017eas valdymo signalas<\/strong> \u2013 da\u017eniausiai valdoma 3\u201332 V DC, tinka tiesiai i\u0161 PLC ar temperat\u016bros reguliatoriaus.<\/li>\n<\/ul>\n<h2>Tr\u016bkumai, apie kuriuos reikia \u017einoti<\/h2>\n<ul>\n<li><strong>Kaista.<\/strong> \u012ejungtoje b\u016bsenoje ant puslaidininkio krenta \u012ftampa (tiristorin\u0117se AC rel\u0117se \u2013 ma\u017edaug 1\u20131,5 V), tod\u0117l i\u0161siskiria \u0161iluma. Apytiksliai skai\u010diuojama apie 1\u20131,5 W kiekvienam apkrovos amperui \u2013 25 A apkrova rei\u0161kia keliasde\u0161imt vat\u0173 \u0161ilumos. Tiksl\u0173 skai\u010di\u0173 rasite konkretaus modelio duomen\u0173 lape.<\/li>\n<li><strong>Nuot\u0117kio srov\u0117.<\/strong> I\u0161jungta SSR n\u0117ra visi\u0161kai \u201eatjungta\u201c \u2013 per j\u0105 teka ma\u017ea (da\u017eniausiai miliamper\u0173 eil\u0117s) srov\u0117. Ma\u017eos galios apkrovos, pvz. LED lempos ar kitos rel\u0117s rit\u0117, gali \u0161vyt\u0117ti arba neatsileisti.<\/li>\n<li><strong>N\u0117ra galvaninio atjungimo apkrovos pus\u0117je.<\/strong> SSR negalima laikyti saugiu atjungimu remonto darbams \u2013 tam reikia jungiklio ar kontaktoriaus.<\/li>\n<li><strong>Gedimas da\u017eniausiai \u2013 trumpasis jungimas.<\/strong> Sugedusi SSR da\u017enai lieka \u012fjungta, tod\u0117l kaitinimo grandin\u0117se rekomenduojama papildoma apsauga nuo perkaitimo.<\/li>\n<\/ul>\n<h2>Kaip parinkti SSR<\/h2>\n<table>\n<thead>\n<tr>\n<th>Parameter<\/th>\n<th>\u012e k\u0105 \u017ei\u016br\u0117ti<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Apkrovos srov\u0117s r\u016b\u0161is<\/td>\n<td>AC SSR (tiristorin\u0117) negali i\u0161jungti nuolatin\u0117s srov\u0117s. DC apkrovoms reikia DC SSR (tranzistorin\u0117s).<\/td>\n<\/tr>\n<tr>\n<td>Apkrovos \u012ftampa<\/td>\n<td>Rinkit\u0117s su atsarga: 230 V tinklui \u2013 bent 24\u2026265 V AC klas\u0117s, 400 V \u2013 42\u2026440 V ar auk\u0161tesn\u0117s klas\u0117s.<\/td>\n<\/tr>\n<tr>\n<td>Srov\u0117<\/td>\n<td>Nominali srov\u0117 nurodoma su tinkamu au\u0161inimu. Praktikoje rinkit\u0117s didesn\u0119 nei apkrovos srov\u0117.<\/td>\n<\/tr>\n<tr>\n<td>Perjungimo b\u016bdas<\/td>\n<td><strong>Ties nuliu<\/strong> (zero-cross) \u2013 kaitinimo elementams, ma\u017eiau trukd\u017ei\u0173. <strong>Momentinis<\/strong> (random) \u2013 induktyvioms apkrovoms ir fazinei reguliacijai.<\/td>\n<\/tr>\n<tr>\n<td>Control<\/td>\n<td>DC \u012ftampa (pvz. 3\u201332 V DC), AC \u012ftampa arba analoginis signalas (4\u201320 mA, 0\u201310 V) proporciniam valdymui.<\/td>\n<\/tr>\n<tr>\n<td>Mounting<\/td>\n<td>Ant plok\u0161t\u0117s su atskiru radiatoriumi, DIN b\u0117gelio su integruotu radiatoriumi, arba spausdintinei plok\u0161tei.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Au\u0161inimas \u2013 svarbiausia dalis<\/h2>\n<p>Da\u017eniausia SSR gedimo prie\u017eastis \u2013 perkaitimas. Keletas taisykli\u0173:<\/p>\n<ul>\n<li>Panelin\u0117 SSR (\u201eritulio\u201c formos) <strong>visada<\/strong> montuojama ant radiatoriaus su termopasta ar termo pagalv\u0117le. Montavimas ant plono skardos lak\u0161to be radiatoriaus tinka tik labai ma\u017eoms srov\u0117ms.<\/li>\n<li>Pa\u017ei\u016br\u0117kite gamintojo grafik\u0105 \u201esrov\u0117 \u2013 aplinkos temperat\u016bra\u201c: spintoje, kur +40 \u00b0C ar daugiau, leistina srov\u0117 ma\u017eesn\u0117.<\/li>\n<li>Radiatori\u0173 montuokite vertikaliai, palikite tarp\u0105 oro cirkuliacijai, nestatykite keli\u0173 SSR glaud\u017eiai be skai\u010diavimo.<\/li>\n<li>U\u017edaroje spintoje \u0161ilum\u0105 reikia ir pa\u0161alinti \u2013 gali prireikti <a href=\"https:\/\/inteq.lt\/en\/product-category\/pramones-automatika\/ventiliatoriai\/\">spintos ventiliatoriaus<\/a>.<\/li>\n<\/ul>\n<p>Papras\u010diausias kelias \u2013 SSR su integruotu radiatoriumi DIN b\u0117geliui, pvz. Carlo Gavazzi RGC serija (<a href=\"https:\/\/inteq.lt\/en\/product\/carlo-gavazzi-rgc1a23d25kke\/\">RGC1A23D25KKE<\/a>, 25 A, 24\u2013240 V AC, valdymas 3\u201332 V DC). Panelin\u0117s rel\u0117s, pvz. <a href=\"https:\/\/inteq.lt\/en\/product\/carlo-gavazzi-rm1a23d25\/\">Carlo Gavazzi RM1A23D25<\/a> (25 A, 24\u2013265 V AC), reikalauja atskiro radiatoriaus.<\/p>\n<h2>Protection<\/h2>\n<ul>\n<li><strong>Trumpasis jungimas.<\/strong> Puslaidininkis sugenda grei\u010diau, nei suveikia \u012fprastas automatinis jungiklis. Rekomenduojami greitieji puslaidininki\u0173 saugikliai (gR, aR), parinkti pagal SSR duomen\u0173 lape nurodyt\u0105 I\u00b2t vert\u0119.<\/li>\n<li><strong>Vir\u0161\u012ftampiai.<\/strong> Jungiant induktyvias apkrovas naudojamas varistorius lygiagre\u010diai SSR i\u0161\u0117jimui (kai kurie modeliai j\u012f turi viduje).<\/li>\n<\/ul>\n<h2>Common mistakes<\/h2>\n<ul>\n<li>SSR be radiatoriaus arba per ma\u017eas radiatorius.<\/li>\n<li>AC SSR naudojama DC apkrovai \u2013 rel\u0117 nei\u0161sijungia.<\/li>\n<li>Per ma\u017ea \u012ftampos klas\u0117 400 V tinklui.<\/li>\n<li>Ma\u017ea apkrova (LED, rel\u0117s rit\u0117) \u0161vyti ar neatsileid\u017eia d\u0117l nuot\u0117kio srov\u0117s.<\/li>\n<li>SSR naudojama kaip saugus atjungimas.<\/li>\n<\/ul>\n<h2>Ma\u017eos srov\u0117s variantas<\/h2>\n<p>Jei reikia valdyti nedidel\u0119 AC apkrov\u0105 (iki 2 A) i\u0161 PLC, patogi plona SSR rel\u0117, pvz. <a href=\"https:\/\/inteq.lt\/en\/product\/finder-34-81-7-024-8240\/\">Finder 34.81.7.024.8240<\/a>: 12\u2013240 V AC, 2 A, valdymas 24 V DC, perjungimas ties nuliu. Analoginiam valdymui yra modeli\u0173 su 4\u201320 mA \u012f\u0117jimu, pvz. <a href=\"https:\/\/inteq.lt\/en\/product\/carlo-gavazzi-rm1e23aa25\/\">Carlo Gavazzi RM1E23AA25<\/a>.<\/p>\n<h2>How to find them on inteq.lt<\/h2>\n<p>Puslaidininkines reles rasite skyriuje <a href=\"https:\/\/inteq.lt\/en\/product-category\/pramones-automatika\/reles-ir-kontaktoriai\/\">Relays and contactors<\/a>. Jei kei\u010diate sen\u0105 SSR, \u012fveskite jos kod\u0105 <a href=\"https:\/\/inteq.lt\/en\/paieska-pagal-koda\/\">in the search by manufacturer code<\/a> \u2013 rasime t\u0105 pa\u010di\u0105 arba analog\u0105 su tokia pa\u010dia srove, \u012ftampa ir montavimu. \u017dym\u0117jimas nusitryn\u0119s? \u012ekelkite \ud83d\udcf7 nuotrauk\u0105 arba para\u0161ykite per <a href=\"https:\/\/inteq.lt\/en\/kontaktai\/\">u\u017eklausos form\u0105<\/a>. Kada vietoje SSR geriau tinka \u012fprastas kontaktorius \u2013 skaitykite <a href=\"https:\/\/inteq.lt\/en\/kontaktorius-ar-rele-kuo-skiriasi\/\">Kontaktorius ar rel\u0117: kuo skiriasi<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"<p>An SSR switches without sparks or wear, but it heats up and has leakage current. How to select, cool and protect a solid-state relay.<\/p>","protected":false},"author":1,"featured_media":1522,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[2493],"tags":[],"class_list":["post-1521","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-pramones-automatika"],"_links":{"self":[{"href":"https:\/\/inteq.lt\/en\/wp-json\/wp\/v2\/posts\/1521","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/inteq.lt\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/inteq.lt\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/inteq.lt\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/inteq.lt\/en\/wp-json\/wp\/v2\/comments?post=1521"}],"version-history":[{"count":0,"href":"https:\/\/inteq.lt\/en\/wp-json\/wp\/v2\/posts\/1521\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/inteq.lt\/en\/wp-json\/wp\/v2\/media\/1522"}],"wp:attachment":[{"href":"https:\/\/inteq.lt\/en\/wp-json\/wp\/v2\/media?parent=1521"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/inteq.lt\/en\/wp-json\/wp\/v2\/categories?post=1521"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/inteq.lt\/en\/wp-json\/wp\/v2\/tags?post=1521"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}