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Ljudi svakodnevno koriste električne uređaje koji im pomažu u brzom obavljanju kućanskih zadataka. Aparat dobiva električnu energiju preko svog utikača u kućnoj električnoj utičnici. Budući da se dio energije koju uređaj prima gubi na otpadnu toplinu, utikač može postati topao na dodir. Međutim, utikač koji je vruć na dodir može predstavljati opasnost za vas i vaš dom, piše Dom & Dizajn.

Otpadna toplina

Električni uređaji koji imaju motore koriste električnu struju za stvaranje elektromotorne sile. Elektronički uređaji – koji uključuju sve uređaje koji imaju tranzistor – koriste i napon i struju za upravljanje računalnim mikročipovima, pojačavaju signale izmjenične struje ili pretvaraju izmjeničnu struju u istosmjernu. Kada električna struja prolazi kroz električnu ili elektroničku komponentu, dio struje ili snage gubi se na otpadnu toplinu. Budući da svi materijali koji provode električnu struju daju određeni električni otpor, čak i visoko vodljivi materijali kao što su električna žica i metalni zupci na utikaču stvaraju otpadnu toplinu.

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Uzroci vrućeg utikača

Iako je normalno da utikač bude topao, nenormalno je da takav utikač bude vruć. Toplina koja nastaje prolaskom električne struje kroz električno otporno tijelo naziva se "omsko zagrijavanje". Ako je utikač ili električna utičnica labavi, električna struja iz tog utikača ili utičnice mora proći kroz područje s visokim električnim otporom kako bi se sklopila. Kako bi se osiguralo dovoljno snage za rad uređaja, više energije mora proći kroz utikač ili utičnicu da bi došlo do uređaja. Većina povećane snage pretvara se u otpadnu toplinu, a utikač postaje vruć na dodir. Unutarnji električni kvarovi u uređaju, poput kratkog spoja ili neispravno uzemljenog električnog priključka, također mogu uzrokovati da uređaj troši više energije nego što je potrebno i prekomjerno se zagrijava.

Opasnosti

Utikač koji je vruć na dodir može predstavljati opasnost od požara i strujnog udara. Ako se pregrijani utikač nalazi u blizini zapaljivih materijala, kao što su zavjese, drveni namještaj ili papir, utikač može zapaliti te materijale i izazvati požar. Slično tome, pregrijani utikači mogu oštetiti izolacijski materijal oko utikača ili žica električnih kabela. Oštećena izolacija može otkriti metalne vodiče u električnom kabelu, uzrokujući opasnost od strujnog udara.

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Što poduzeti?

Ako je utikač električnog uređaja vruć na dodir, isključite prekidač - ili uklonite utikač - iz električne utičnice u koju je uređaj priključen. Pričekajte nekoliko minuta da se utikač ohladi prije nego što ga izvadite iz električne utičnice. Ne uključujte uređaj u drugu utičnicu. Ako se čini da je problem koji je uzrokovao pregrijavanje utikača u labavoj utičnici, možda je potrebno nazvati električara da pregleda utičnicu i po potrebi je zamijeni.

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Ljudi svakodnevno koriste električne uređaje koji im pomažu u brzom obavljanju kućanskih zadataka. Aparat dobiva električnu energiju preko svog utikača u kućnoj električnoj utičnici. Budući da se dio energije koju uređaj prima gubi na otpadnu toplinu, utikač može postati topao na dodir. Međutim, utikač koji je vruć na dodir može predstavljati opasnost za vas i vaš dom, piše Dom & Dizajn.

Otpadna toplina

Električni uređaji koji imaju motore koriste električnu struju za stvaranje elektromotorne sile. Elektronički uređaji – koji uključuju sve uređaje koji imaju tranzistor – koriste i napon i struju za upravljanje računalnim mikročipovima, pojačavaju signale izmjenične struje ili pretvaraju izmjeničnu struju u istosmjernu. Kada električna struja prolazi kroz električnu ili elektroničku komponentu, dio struje ili snage gubi se na otpadnu toplinu. Budući da svi materijali koji provode električnu struju daju određeni električni otpor, čak i visoko vodljivi materijali kao što su električna žica i metalni zupci na utikaču stvaraju otpadnu toplinu.

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Shutterstock
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Uzroci vrućeg utikača

Iako je normalno da utikač bude topao, nenormalno je da takav utikač bude vruć. Toplina koja nastaje prolaskom električne struje kroz električno otporno tijelo naziva se "omsko zagrijavanje". Ako je utikač ili električna utičnica labavi, električna struja iz tog utikača ili utičnice mora proći kroz područje s visokim električnim otporom kako bi se sklopila. Kako bi se osiguralo dovoljno snage za rad uređaja, više energije mora proći kroz utikač ili utičnicu da bi došlo do uređaja. Većina povećane snage pretvara se u otpadnu toplinu, a utikač postaje vruć na dodir. Unutarnji električni kvarovi u uređaju, poput kratkog spoja ili neispravno uzemljenog električnog priključka, također mogu uzrokovati da uređaj troši više energije nego što je potrebno i prekomjerno se zagrijava.

Opasnosti

Utikač koji je vruć na dodir može predstavljati opasnost od požara i strujnog udara. Ako se pregrijani utikač nalazi u blizini zapaljivih materijala, kao što su zavjese, drveni namještaj ili papir, utikač može zapaliti te materijale i izazvati požar. Slično tome, pregrijani utikači mogu oštetiti izolacijski materijal oko utikača ili žica električnih kabela. Oštećena izolacija može otkriti metalne vodiče u električnom kabelu, uzrokujući opasnost od strujnog udara.

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Shutterstock
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Ako je utikač električnog uređaja vruć na dodir, isključite prekidač - ili uklonite utikač - iz električne utičnice u koju je uređaj priključen. Pričekajte nekoliko minuta da se utikač ohladi prije nego što ga izvadite iz električne utičnice. Ne uključujte uređaj u drugu utičnicu. Ako se čini da je problem koji je uzrokovao pregrijavanje utikača u labavoj utičnici, možda je potrebno nazvati električara da pregleda utičnicu i po potrebi je zamijeni.

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ŽivotVEĆ VIĐENO

Zagrijavaju vam se utikači? Nekoliko je razloga, ali i opasnosti, reagirajte na vrijeme

Piše MOZAIK SD
9. kolovoza 2022. - 13:06
23035650
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Ljudi svakodnevno koriste električne uređaje koji im pomažu u brzom obavljanju kućanskih zadataka. Aparat dobiva električnu energiju preko svog utikača u kućnoj električnoj utičnici. Budući da se dio energije koju uređaj prima gubi na otpadnu toplinu, utikač može postati topao na dodir. Međutim, utikač koji je vruć na dodir može predstavljati opasnost za vas i vaš dom, piše Dom & Dizajn.

Otpadna toplina

Električni uređaji koji imaju motore koriste električnu struju za stvaranje elektromotorne sile. Elektronički uređaji – koji uključuju sve uređaje koji imaju tranzistor – koriste i napon i struju za upravljanje računalnim mikročipovima, pojačavaju signale izmjenične struje ili pretvaraju izmjeničnu struju u istosmjernu. Kada električna struja prolazi...

#UTIKAČI#ZAGRIJAVANJE#OPASNOSTI# UZROCI
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13. svibanj 2024 03:40