{"id":13000,"date":"2022-03-24T14:00:00","date_gmt":"2022-03-24T13:00:00","guid":{"rendered":"https:\/\/rdcomponents.com\/site\/?p=13000"},"modified":"2025-03-20T16:00:08","modified_gmt":"2025-03-20T15:00:08","slug":"28-la-resistenza-a-compressione","status":"publish","type":"post","link":"https:\/\/rdcomponents.com\/site\/2022\/03\/24\/28-la-resistenza-a-compressione\/","title":{"rendered":"#28 – La resistenza a compressione"},"content":{"rendered":"\n
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Dopo avere parlato dei pi\u00f9 piccoli<\/strong><\/a>, oggi parlo dei pi\u00f9 forti, intesi come i pi\u00f9 resistenti. Ma resistenti a cosa? Alla\u00a0compressione.<\/p>\n\n\n\n

Uno dei principali usi del protettore termico \u00e8 quello di salva motori, nel senso che viene inserito quasi sempre all\u2019interno dell\u2019avvolgimento dello statore (come mostrato in figura) e ha il compito di intervenire in caso di surriscaldamento.<\/p>\n\n\n\n

Gli avvolgimenti, quasi esclusivamente in rame, non sono tutti uguali e dalla dimensione del motore dipende la sezione del rame utilizzato e di conseguenza \u00e8 chiaro che sezioni maggiori eserciteranno una forza di compressione sul corpo del protettore pi\u00f9 grande rispetto a quello che pu\u00f2 accadere con fili pi\u00f9 sottili. Ecco che diventa importante, superate certe sezioni, e quindi certe forze di compressione, che il protettore sia in grado di resistere ad esse. <\/p>\n\n\n\n

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L’importanza della resistenza a compressione<\/h3>\n\n\n\n

Perch\u00e9 tutto questo? Perch\u00e9 insisto sull\u2019importanza della resistenza a compressione del corpo del protettore? La risposta \u00e8 molto semplice: se il protettore non resiste si rompe, oppure potrebbe anche solo deformarsi, ma la conseguenza \u00e8, nel migliore dei casi, una staratura del protettore, che andr\u00e0 ad intervenire in modo errato, oppure creare un corto circuito, o pi\u00f9 semplicemente scollegarsi, non ci sar\u00e0 pi\u00f9 passaggio di corrente e il motore avr\u00e0 finito di lavorare. Per evitare queste problematiche i produttori di motori elettrici hanno adottato alcuni stratagemmi, per esempio mettere il protettore in superficie e non all\u2019interno dell\u2019avvolgimento, abbassando la temperatura di intervento (ricordate l\u2019articolo \u201cTempo e temperatura: L\u2019importanza della posizione<\/a>\u201d)<\/p>\n\n\n\n

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Oppure viene creato un apposito alloggiamento nel quale viene inserito il protettore, ma la scelta che va per la maggiore resta l\u2019inserimento all\u2019interno dell\u2019avvolgimento.<\/p>\n\n\n\n

Ma cosa propone R&D Components? In questi casi la scelta consigliata, ma quasi obbligata, \u00e8 la serie \u201cC<\/a>\u201d della nostra rappresentata tedesca TMC. Ne abbiamo gi\u00e0 parlato nel nostro primo articolo<\/a>, ma vale la pena ribadire alcuni punti. Il corpo dei protettori TMC \u00e8 in acciaio e resiste a una compressione di 60N, circa 600 Kg, inoltre l\u2019isolamento in NOMEX \u00e8 termoristretto e sagomato, in modo tale da agevolare il suo inserimento nell\u2019avvolgimento e, per finire, il bimetallo \u00e8 posizionato nel mezzo del corpo del protettore e non richiede un particolare posizionamento, come invece accade con altri prodotti, ma questo lo vedremo in seguito.<\/p>\n\n\n\n

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Scarica l’articolo in versione stampabile cliccando qui sotto!<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n

28-RESISTENZA-A-COMPRESSIONE<\/a>Download<\/a><\/div>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

Dopo avere parlato dei pi\u00f9 piccoli, oggi parlo dei pi\u00f9 forti, intesi come i pi\u00f9 resistenti. Ma resistenti a cosa? Alla\u00a0compressione. Uno dei principali usi del protettore termico \u00e8 quello di salva motori, nel senso che viene inserito quasi sempre all\u2019interno dell\u2019avvolgimento dello statore (come…<\/p>\n","protected":false},"author":2,"featured_media":13329,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[239],"tags":[168,167,138,166],"class_list":["post-13000","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-funzionamento-tecnico","tag-avvolgimenti","tag-compressione","tag-protettori-termici","tag-resistenza"],"yoast_head":"\n#28 - La resistenza a compressione -<\/title>\n<meta name=\"description\" content=\"La resistenza alla compressione \u00e8 una delle pi\u00f9 importanti caratteristiche dei componenti per la sicurezza. 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Ferranti","author_link":"https:\/\/rdcomponents.com\/site\/author\/roberto\/"},"rttpg_comment":0,"rttpg_category":"<a href=\"https:\/\/rdcomponents.com\/site\/category\/funzionamento-tecnico\/\" rel=\"category tag\">Funzionamento tecnico<\/a>","rttpg_excerpt":"Dopo avere parlato dei pi\u00f9 piccoli, oggi parlo dei pi\u00f9 forti, intesi come i pi\u00f9 resistenti. Ma resistenti a cosa? Alla\u00a0compressione. Uno dei principali usi del protettore termico \u00e8 quello di salva motori, nel senso che viene inserito quasi sempre all\u2019interno dell\u2019avvolgimento dello statore (come...","_links":{"self":[{"href":"https:\/\/rdcomponents.com\/site\/wp-json\/wp\/v2\/posts\/13000","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rdcomponents.com\/site\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rdcomponents.com\/site\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rdcomponents.com\/site\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/rdcomponents.com\/site\/wp-json\/wp\/v2\/comments?post=13000"}],"version-history":[{"count":0,"href":"https:\/\/rdcomponents.com\/site\/wp-json\/wp\/v2\/posts\/13000\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/rdcomponents.com\/site\/wp-json\/wp\/v2\/media\/13329"}],"wp:attachment":[{"href":"https:\/\/rdcomponents.com\/site\/wp-json\/wp\/v2\/media?parent=13000"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rdcomponents.com\/site\/wp-json\/wp\/v2\/categories?post=13000"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rdcomponents.com\/site\/wp-json\/wp\/v2\/tags?post=13000"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}