Ke\u010f \u0165ah\u00e1te stovky metrov DC tr\u00e1s s nap\u00e4t\u00edm bl\u00ed\u017eiacim sa k 1000V, \u0161tandardn\u00fd pr\u00edstup nesta\u010d\u00ed. K\u013e\u00fa\u010dov\u00e1 je spr\u00e1vna in\u0161tal\u00e1cia a umiestnenie po\u017eiarno-bezpe\u010dnostn\u00fdch odp\u00edna\u010dov (Fireman Switches<\/a>) \u010do najbli\u017e\u0161ie k samotn\u00fdm panelom, aby sa pri aktiv\u00e1cii odpojilo DC nap\u00e4tie e\u0161te pred vstupom do budovy.<\/p>\n\n\n\n Be\u017en\u00e1 predstava laikov je, \u017ee ke\u010f za\u010dne horie\u0165, \u00fastred\u0148a EPS po\u0161le do odp\u00e1ja\u010da nejak\u00fd impulz a ten ho vypne. V priemysle (a pri po\u017eiari obzvl\u00e1\u0161\u0165) sa na to ale nespoliehame, preto\u017ee pri po\u017eiari m\u00f4\u017ee k\u00e1bel zhorie\u0165 e\u0161te predt\u00fdm, ako stihne prenies\u0165 povel na vypnutie.<\/p>\n\n\n\n Preto sa pou\u017e\u00edvaj\u00fa podp\u00e4tov\u00e9 cievky (Undervoltage release \/ MN cievky)<\/a><\/strong>.<\/p>\n\n\n\n Alternat\u00edvou s\u00fa motorick\u00e9 pohony<\/strong>, ktor\u00e9 na vypnutie potrebuj\u00fa energiu. V takom pr\u00edpade mus\u00ed ma\u0165 ovl\u00e1dac\u00ed okruh vlastn\u00fa certifikovan\u00fa UPS (z\u00e1lo\u017en\u00fd zdroj), aby mal motor\u010dek silu oto\u010di\u0165 va\u010dkou a odpoji\u0165 DC stranu aj v momente, ke\u010f u\u017e hlavn\u00fd isti\u010d haly d\u00e1vno vypadol.<\/p>\n\n\n\n Tu za\u010d\u00edna skuto\u010dn\u00e1 automatiz\u00e1cia. Predstavte si, \u017ee m\u00e1te na streche 500 kWp elektr\u00e1re\u0148. \u0164ah\u00e1te stovky metrov hrub\u00fdch DC k\u00e1blov od panelov k meni\u010dom. Popri nich v \u017e\u013eaboch (alebo v bl\u00edzkom s\u00fabehu) mus\u00edte potiahnu\u0165 ovl\u00e1dacie k\u00e1ble (napr. CYKY alebo J-Y(St)Y) od EPS pre spom\u00ednan\u00e9 podp\u00e4tov\u00e9 cievky.<\/p>\n\n\n\n Ako to rie\u0161ime v praxi:<\/strong><\/p>\n\n\n\n Priemyseln\u00fd \u0161tandard nedovo\u013euje, aby sme len nie\u010do odpojili a d\u00fafali, \u017ee sa to stalo. Centr\u00e1lny syst\u00e9m MaR (Meranie a regul\u00e1cia) alebo samotn\u00e1 EPS mus\u00ed s absol\u00fatnou istotou vedie\u0165, v akom stave je odp\u00e1ja\u010d.<\/p>\n\n\n\n Preto sa vyu\u017e\u00edvaj\u00fa pomocn\u00e9 kontakty (Auxiliary contacts)<\/strong> priamo vo Fireman Switchoch. Tieto kontakty posielaj\u00fa sp\u00e4\u0165 do \u00fastredne inform\u00e1ciu o fyzickej polohe hlavn\u00fdch no\u017eov odp\u00e1ja\u010da. A\u017e ke\u010f \u00fastred\u0148a dostane sign\u00e1l \u201eodpojen\u00e9\u201c (fyzicky potvrden\u00fd stav), syst\u00e9m uvo\u013en\u00ed blokovanie a po\u0161le hasi\u010dom na panel inform\u00e1ciu: \u201eHala je DC-Safe, m\u00f4\u017eete za\u010da\u0165 z\u00e1sah.\u201c<\/em><\/p>\n\n\n\n Ak partia elektrik\u00e1rov namontuje na strechu krabice s odp\u00e1ja\u010dmi a len tam bez rozmyslu dotiahne CYKY k\u00e1bel od EPS-ky, koleduje si o obrovsk\u00fd probl\u00e9m. Falo\u0161n\u00e9 poplachy<\/a> (ke\u010f indukcia alebo poklesy nap\u00e4tia sp\u00f4sobuj\u00fa n\u00e1hodn\u00e9 odp\u00e1janie FVE), zhoren\u00e9 cievky a neprejdenie pr\u00edsnymi po\u017eiarnymi rev\u00edziami s\u00fa na dennom poriadku.<\/p>\n\n\n\n Pochopenie toho, ako sa spr\u00e1va slabopr\u00fadov\u00fd ovl\u00e1dac\u00ed sign\u00e1l v mas\u00edvnom silopr\u00fadovom prostred\u00ed fotovoltiky, je to, \u010do z oby\u010dajn\u00e9ho mont\u00e9ra rob\u00ed \u0161pi\u010dkov\u00e9ho automatiz\u00e9ra.<\/p>\n\n\n\n Aby ste ako \u0161pecialisti mohli rie\u0161i\u0165 presne tak\u00e9to pokro\u010dil\u00e9 technologick\u00e9 v\u00fdzvy a nemuseli str\u00e1ca\u0165 \u010das papierova\u010dkami, je tu na\u0161a spolo\u010dnos\u0165. MJM Automation, s.r.o. sprostredk\u00fava pr\u00e1cu pre \u017eivnostn\u00edkov elektrik\u00e1rov v zahrani\u010d\u00ed<\/sup>.<\/p>\n\n\n\n Pre\u010do \u00eds\u0165 montova\u0165 obnovite\u013en\u00e9 zdroje a FVE na priemyseln\u00e9 haly pr\u00e1ve cez n\u00e1s?<\/p>\n\n\n\n Ste zohrat\u00e1 partia \u017eivnostn\u00edkov, ktor\u00e1 sa \u0161pecializuje na in\u0161tal\u00e1cie FVE a elektroin\u0161tal\u00e1cie priemyseln\u00fdch h\u00e1l? Chcete rie\u0161i\u0165 technol\u00f3gie a nie h\u013eadanie z\u00e1kaziek a vyp\u013a\u0148anie nemeck\u00fdch formul\u00e1rov?<\/p>\n\n\n\n Ozvite sa n\u00e1m. M\u00e1me pre v\u00e1s pripraven\u00e9 stabiln\u00e9 projekty, kde va\u0161u odbornos\u0165 re\u00e1lne ocenia. Kontaktujte MJM Automation<\/a> e\u0161te dnes a zabezpe\u010dte si stabiln\u00fa pr\u00e1cu na \u0161pi\u010dkov\u00fdch projektoch zelenej energie.<\/p>","protected":false},"excerpt":{"rendered":" Priemyseln\u00e1 fotovoltika (FVE) na strech\u00e1ch obrovsk\u00fdch logistick\u00fdch a v\u00fdrobn\u00fdch h\u00e1l za\u017e\u00edva v zahrani\u010d\u00ed neskuto\u010dn\u00fd boom. Pre sk\u00fasen\u00fdch elektrik\u00e1rov to znamen\u00e1 stabiln\u00fa pr\u00e1cu na roky dopredu. Postrach rev\u00edzi\u00ed: Po\u017eiarno-bezpe\u010dnostn\u00e9 odp\u00e1ja\u010de a integr\u00e1cia do EPS V na\u0161ich ned\u00e1vnych anal\u00fdzach a vide\u00e1ch sme si potvrdili, \u017ee po\u017eiarno-bezpe\u010dnostn\u00e9 odp\u00e1ja\u010de a celkovo rizik\u00e1 zlej mont\u00e1\u017ee fotovoltiky s\u00fa absol\u00fatnym „gamechangerom“ a […]<\/p>\n","protected":false},"author":1,"featured_media":853,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[25,26,23],"class_list":["post-852","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nezaradene","tag-elektrikari","tag-mjm-automation","tag-zivnostnici"],"rttpg_featured_image_url":{"full":["https:\/\/www.mjm-automation.sk\/wp-content\/uploads\/2026\/10\/solar_panels_on_warehouse_roof_67617_Nano_Banana_Pro-scaled.png",2560,1429,false],"landscape":["https:\/\/www.mjm-automation.sk\/wp-content\/uploads\/2026\/10\/solar_panels_on_warehouse_roof_67617_Nano_Banana_Pro-scaled.png",2560,1429,false],"portraits":["https:\/\/www.mjm-automation.sk\/wp-content\/uploads\/2026\/10\/solar_panels_on_warehouse_roof_67617_Nano_Banana_Pro-scaled.png",2560,1429,false],"thumbnail":["https:\/\/www.mjm-automation.sk\/wp-content\/uploads\/2026\/10\/solar_panels_on_warehouse_roof_67617_Nano_Banana_Pro-150x150.png",150,150,true],"medium":["https:\/\/www.mjm-automation.sk\/wp-content\/uploads\/2026\/10\/solar_panels_on_warehouse_roof_67617_Nano_Banana_Pro-300x167.png",300,167,true],"large":["https:\/\/www.mjm-automation.sk\/wp-content\/uploads\/2026\/10\/solar_panels_on_warehouse_roof_67617_Nano_Banana_Pro-1024x572.png",1024,572,true],"1536x1536":["https:\/\/www.mjm-automation.sk\/wp-content\/uploads\/2026\/10\/solar_panels_on_warehouse_roof_67617_Nano_Banana_Pro-1536x857.png",1536,857,true],"2048x2048":["https:\/\/www.mjm-automation.sk\/wp-content\/uploads\/2026\/10\/solar_panels_on_warehouse_roof_67617_Nano_Banana_Pro-2048x1143.png",2048,1143,true],"trp-custom-language-flag":["https:\/\/www.mjm-automation.sk\/wp-content\/uploads\/2026\/10\/solar_panels_on_warehouse_roof_67617_Nano_Banana_Pro-18x10.png",18,10,true]},"rttpg_author":{"display_name":"Milan Lys\u00edk","author_link":"https:\/\/www.mjm-automation.sk\/en\/author\/mjm-automation\/"},"rttpg_comment":0,"rttpg_category":"Nezaraden\u00e9<\/a>","rttpg_excerpt":"Priemyseln\u00e1 fotovoltika (FVE) na strech\u00e1ch obrovsk\u00fdch logistick\u00fdch a v\u00fdrobn\u00fdch h\u00e1l za\u017e\u00edva v zahrani\u010d\u00ed neskuto\u010dn\u00fd boom. Pre sk\u00fasen\u00fdch elektrik\u00e1rov to znamen\u00e1 stabiln\u00fa pr\u00e1cu na roky dopredu. Postrach rev\u00edzi\u00ed: Po\u017eiarno-bezpe\u010dnostn\u00e9 odp\u00e1ja\u010de a integr\u00e1cia do EPS V na\u0161ich ned\u00e1vnych anal\u00fdzach a vide\u00e1ch sme si potvrdili, \u017ee po\u017eiarno-bezpe\u010dnostn\u00e9 odp\u00e1ja\u010de a celkovo rizik\u00e1 zlej mont\u00e1\u017ee fotovoltiky s\u00fa absol\u00fatnym „gamechangerom“ a…","_links":{"self":[{"href":"https:\/\/www.mjm-automation.sk\/en\/wp-json\/wp\/v2\/posts\/852","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.mjm-automation.sk\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.mjm-automation.sk\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.mjm-automation.sk\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.mjm-automation.sk\/en\/wp-json\/wp\/v2\/comments?post=852"}],"version-history":[{"count":2,"href":"https:\/\/www.mjm-automation.sk\/en\/wp-json\/wp\/v2\/posts\/852\/revisions"}],"predecessor-version":[{"id":861,"href":"https:\/\/www.mjm-automation.sk\/en\/wp-json\/wp\/v2\/posts\/852\/revisions\/861"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.mjm-automation.sk\/en\/wp-json\/wp\/v2\/media\/853"}],"wp:attachment":[{"href":"https:\/\/www.mjm-automation.sk\/en\/wp-json\/wp\/v2\/media?parent=852"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.mjm-automation.sk\/en\/wp-json\/wp\/v2\/categories?post=852"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.mjm-automation.sk\/en\/wp-json\/wp\/v2\/tags?post=852"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}![\"\"](\"https:\/\/www.mjm-automation.sk\/wp-content\/uploads\/2026\/10\/solar_panels_on_warehouse_roof_54603_Nano_Banana_Pro-1024x1024.png\")
<\/figure>\n\n\n\nPrinc\u00edp Fail-Safe: Pre\u010do EPS neriadi odp\u00e1ja\u010d, ale ho \u201edr\u017e\u00ed pri \u017eivote\u201c<\/h2>\n\n\n\n
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![\"\"](\"https:\/\/www.mjm-automation.sk\/wp-content\/uploads\/2026\/10\/solar_panels_on_warehouse_roof_73653_Nano_Banana_Pro-1024x1024.png\")
<\/figure>\n\n\n\n2. Probl\u00e9m s indukciou a EMC (Elektromagnetick\u00e1 kompatibilita)<\/a><\/h3>\n\n\n\n
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3. Sp\u00e4tn\u00e1 v\u00e4zba a diagnostika (Loop back)<\/h3>\n\n\n\n
![\"\"](\"https:\/\/www.mjm-automation.sk\/wp-content\/uploads\/2026\/10\/solar_panels_on_warehouse_roof_63180_Nano_Banana_Pro-1024x1024.png\")
<\/figure>\n\n\n\nZhrnutie pre prax<\/h3>\n\n\n\n
S\u00fastre\u010fte sa na odbornos\u0165, byrokraciu nechajte na n\u00e1s<\/h2>\n\n\n\n
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![\"\"](\"https:\/\/www.mjm-automation.sk\/wp-content\/uploads\/2026\/10\/solar_panels_on_warehouse_roof_83846_Nano_Banana_Pro-1024x1024.png\")
<\/figure>\n\n\n\nH\u013ead\u00e1me prof\u00edkov!<\/h2>\n\n\n\n