{"id":9166,"date":"2016-06-14T20:06:21","date_gmt":"2016-06-14T20:06:21","guid":{"rendered":"https:\/\/automation-electric.com\/pornire-directa-dol-2\/"},"modified":"2026-01-17T20:22:08","modified_gmt":"2026-01-17T20:22:08","slug":"pornire-directa-dol-2","status":"publish","type":"post","link":"https:\/\/automation-electric.com\/ro\/pornire-directa-dol-2\/","title":{"rendered":"Pornire direct\u0103 (DOL)"},"content":{"rendered":"
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Protec\u021bie cu releu termic<\/strong><\/h6>\n
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Mod de operare<\/strong>: Prin ap\u0103sarea butonului Start<\/strong>, bobina contactorului Q1<\/strong> este alimentat\u0103, motorul va porni \u0219i se va men\u021bine \u00een func\u021biune dup\u0103 eliberarea butonului Start<\/strong>, prin intermediul contactului auxiliar Q1<\/strong>, butonul Stop<\/strong> \u0219i <\/strong>\u0219i contactul normal \u00eenchis 97-98<\/strong> al releului termic. C\u00e2nd apare o suprasarcin\u0103, contactul normal \u00eenchis 97-98<\/strong> al releului termic se deschide, astfel \u00eenc\u00e2t motorul este oprit. <\/h6>\n
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Calculul releului termic \u0219i al contactorului<\/strong><\/h6>\n
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Valorile pentru Q1, TF1<\/strong> trebuie alese \u00een func\u021bie de puterea nominal\u0103 a motorului dumneavoastr\u0103, pe baza datelor g\u0103site pe pl\u0103cu\u021ba motorului. Siguran\u021ba F1<\/strong> trebuie s\u0103 aib\u0103 o valoare a curentului de 5-7<\/strong> ori mai mare dec\u00e2t curentul nominal al motorului. Siguran\u021bele F2, F3<\/strong> pentru circuitul de comand\u0103 pot fi de p\u00e2n\u0103 la 10 A. <\/h6>\n","protected":false},"excerpt":{"rendered":"

Protec\u021bie cu releu termic Mod de operare: Prin ap\u0103sarea butonului Start, bobina contactorului Q1 este alimentat\u0103, motorul va porni \u0219i se va men\u021bine \u00een func\u021biune dup\u0103 eliberarea butonului Start, prin<\/p>\n","protected":false},"author":1,"featured_media":9123,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[931],"tags":[],"class_list":["post-9166","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-pornirea-motoarelor-trifazate"],"acf":[],"yoast_head":"\nPornire direct\u0103 (DOL) | Automation-Electric<\/title>\n<meta name=\"description\" content=\"Pornirea direct\u0103 a motoarelor asincrone trifazate (DOL) folosind relee termice{:}\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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