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Tommyvog
19/06/2019 s 18:01:14
ÏÎ×ÅÌÓ ÃÎÐßÒ ÝËÅÊÒÐÎÄÂÈÃÀÒÅËÈ Ïðèíöèï ðàáîòû ýëåêòðîäâèãàòåëÿ ýòî ïðåîáðàçîâàíèå ýëåêòðè÷åñêîé ýíåðãèè â ìåõàíè÷åñêóþ ñîçäàíèåì è äàëüíåéøèì âîçäåéñòâèåì ýëåêòðîìàãíèòíîãî ïîëÿ â ñòàòîðå íà ðîòîð.  íåçàâèñèìîñòè îò òîãî òðåõôàçíûé ó âàñ ýë äâèãàòåëü èëè îäíîôàçíûé, ñòàíäàðòà ÃÎÑÒ èëè DIN, êðàíîâûé èëè ñòåïåíè çàùèòû IP23, ýëåêòðè÷åñêèé òîê â íåì ïðîòåêàåò ÷åðåç ïðîâîäíèê, ÷òî íåïðåìåííî åãî íàãðåâàåò â ñîîòâåòñòâèè ñ çàêîíàìè åñòåñòâåííûõ íàóê. Îäíàêî åñëè ÷åðåç îáìîòêó ýëåêòðîäâèãàòåëÿ ïðîõîäèò òîê âûøå íîìèíàëüíîãî, èçíà÷àëüíî ðàññ÷èòàííîãî êîíñòðóêòîðàìè, òî ýòîò ýëåêòðîìîòîð áóäåò ÷ðåçìåðíî íàãðåâàòüñÿ. Ïðåâûøåíèå äîïóñòèìîé òåìïåðàòóðû äëÿ íîðìàëüíîé ðàáîòû ýëåêòðîäâèãàòåëÿ ìîæåò âîçíèêàòü è ïî ðÿäó äðóãèõ ïðè÷èí. Ýòîò áåñêîíòðîëüíûé ïðîöåññ íåèçìåííî ïðèâåäåò ê ðàñïëàâëåíèþ çàâîäñêîãî ëàêà îáìîòêè è, â êîíå÷íîì ñ÷åòå, êîðîòêîìó çàìûêàíèþ ïðîâîäíèêîâ. http://www.uesk.org/katalog/elektrodvigateli/trehfaznye-380v/elektrodvigateli-ais/al/71a8/ Ãðååòñÿ ýëåêòðîäâèãàòåëü. Ïðè÷èíû: Ïåðåãðóçêà è ýêñïëóàòàöèÿ â íåäîïóñòèìîì ðåæèìå, ìåõàíè÷åñêèå âîçäåéñòâèÿ íà àãðåãàò, íàðóøåíèå öåëîñòíîñòè ìîòîðà. Ýêñïëóàòàöèÿ àãðåãàòà â óñëîâèÿõ, íå ñîîòâåòñòâóþùèõ êëèìàòè÷åñêîìó èñïîëíåíèþ (ðåçêèå ïåðåïàäû òåìïåðàòóð è ïîâûøåííàÿ âëàæíîñòü). Íåïðàâèëüíîå õðàíåíèå, ìîíòàæ è òðàíñïîðòèðîâêà. Ýêñïëóàòàöèÿ ýëåêòðîäâèãàòåëÿ ïðè ïîâûøåííîì èëè ïîíèæåííîì íàïðÿæåíèè ïèòàþùåé ñåòè. Íåáðåæíîå îòíîøåíèå ê ýêñïëóàòàöèè àãðåãàòà è êàê ñëåäñòâèå çàñîðåíèå âåíòèëÿöèîííûõ êàíàëîâ. Íåèñïðàâíîñòü ïîäøèïíèêîâ ýëåêòðîäâèãàòåëÿ, (ïëîõîå ïðîêðó÷èâàíèå, âèáðàöèÿ èëè ïîëíîå çàöèêëèâàíèå ðîòîðà). Îòñóòñòâèå èëè ïåðåêîñ ôàç (çàïóñê ýëåêòðîäâèãàòåëÿ íà äâóõ ôàçàõ èëè îòêëþ÷åíèå îäíîé èç ôàç ïðè ðàáîòå äâèãàòåëÿ). Îøèáêè ïðè ïîäêëþ÷åíèè ýëåêòðîäâèãàòåëÿ (åñëè íà øèëüäå óêàçàíî ïîäêëþ÷åíèå òðåóãîëüíèêîì íà 220Â, à çâåçäîé íà 380Â, âìåñòî ïîäêëþ÷åíèÿ òðåóãîëüíèêîì íà 220Â, ïîäêëþ÷èòü åãî íà 380Â) Ðàçáàëàíñèðîâêà ïðèâîäà èëè äåòàëè íà âàëó ýëåêòðîäâèãàòåëÿ (êàê ñëåäñòâèå âîçíèêíîâåíèå áèåíèÿ âàëà). Íåïðàâèëüíàÿ ýêñïëóàòàöèÿ ïðè ðàáîòå îò ÷àñòîòíîãî ïðåîáðàçîâàòåëÿ, âñëåäñòâèå âîçíèêíîâåíèÿ âûñîêî÷àñòîòíûõ òîêîâ (äëÿ ìîùíûõ äâèãàòåëåé îáÿçàòåëüíî íàëè÷èå òîêîèçîëèðóþùèõ ïîäøèïíèêîâ) Íåîáõîäèìî ïîëíîñòüþ ñîáëþäàòü ðåêîìåíäàöèè èíñòðóêöèè ïî ïðèìåíåíèþ, êàê ïðè ïîäêëþ÷åíèè ìîòîðà, òàê è ïðè åãî äàëüíåéøåé ðàáîòå, ýêñïëóàòèðîâàòü ìîòîð â ñîîòâåòñòâèè ñ óñëîâèÿìè åãî êëèìàòè÷åñêîãî èñïîëíåíèÿ è ðåæèìà ðàáîòû. Ïîìèìî ýòîãî íåîáõîäèìî ðåãóëÿðíî ïðîèçâîäèòü òåõíè÷åñêîå îáñëóæèâàíèå àãðåãàòîâ è ïðîâåðÿòü íà ïðåäìåò íåèñïðàâíîñòåé.  òàêîì ñëó÷àå âàø ýë äâèãàòåëü ïðîðàáîòàåò íå ìåíåå 5 ëåò, è íå áóäåò íàãðåâàòüñÿ.
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ÓÑÒÐÎÉÑÒÂÎ ÝËÅÊÒÐÎÄÂÈÃÀÒÅËß Ñòðîåíèå ýëåêòðîäâèãàòåëÿ Ýëåêòðîäâèãàòåëü ýòî ýëåêòðè÷åñêàÿ ìàøèíà, êîòîðàÿ ïðåîáðàçóåò ýëåêòðè÷åñêóþ ýíåðãèþ â ìåõàíè÷åñêóþ.  ðåçóëüòàòå îáðàçîâàíèÿ ýëåêòðîìàãíèòíîé èíäóêöèè â ñòàòîðå äâèãàòåëÿ ýíåðãèÿ ýëåêòðîíîâ è ïðîòîíîâ â ýëåêòðè÷åñêèõ ïðîâîäàõ ïåðåäàåòñÿ íà âàë ìîòîðà, âðàùåíèå êîòîðîãî åñòü åãî ðàáîòà êàê ðåçóëüòàò ìåõàíè÷åñêîé ýíåðãèè. Óñòðîéñòâî ýëåêòðîäâèãàòåëÿ Ýëåêòðîäâèãàòåëü ñîñòîèò èç äâóõ îñíîâíûõ ÷àñòåé: Ñòàòîð ýëåêòðîäâèãàòåëÿ êîíñòðóêöèÿ, ñîñòîÿùàÿ èç: - Êîðïóñà ñòàòîðà, èçãîòîâëåííîãî èç íåìàãíèòíîãî ìàòåðèàëà (÷óãóí èëè ñïëàâ àëþìèíèÿ); - Ñåðäå÷íèêà ñòàòîðà, ñîñòîÿùåãî èç ïëàñòèí ýëåêòðîòåõíè÷åñêîé ñòàëè ñîáðàííûõ â ïàêåòû; - Îáìîòêè ñòàòîðà, èçãîòîâëåííîé èç ìåäíîé ïðîâîëîêè êðóãëîãî èëè êâàäðàòíîãî ñå÷åíèÿ; http://www.uesk.org/katalog/elektrodvigateli/elektrodvigateli-s-tormozom/gost/air71v8e/ Ðîòîð ýëåêòðîäâèãàòåëÿ ñîñòîÿùèé èç: - Ñåðäå÷íèêà, ñîñòîÿùåãî èç ëèñòîâ ñòàëè ñ çàëèòûì â ïàçû ðàñïëàâëåííûì àëþìèíèåì; - Ñòåðæíåé, êîòîðûå îáðàçîâàëèñü â ðåçóëüòàòå ýòîãî âçàèìîäåéñòâèÿ - Òîðöåâûõ êîëåö, êîòîðûå çàìûêàþò âñþ ýòó êîíñòðóêöèþ íàêîðîòêî.  ðåçóëüòàòå ïîëó÷àåòñÿ òàê íàçûâàåìàÿ «áåëè÷üÿ êëåòêà» - Âàë ýëåêòðîäâèãàòåëÿ, ýëåìåíò êîòîðûé çàïðåññîâûâàåòñÿ â ðîòîð ìîòîðà, ñîñòîÿùèé èç ñòàëè âûñîêîé ïðî÷íîñòè Èìåííî êîíñòðóêöèÿ «áåëè÷üåé êëåòêè» ñïîñîáñòâóåò îáðàçîâàíèþ ìàãíèòíîãî ïîëÿ â îáìîòêå ñòàòîðà, êîòîðîå ïðèâîäèò â äâèæåíèå ðîòîð ìîòîðà âìåñòå ñ çàïðåññîâàííûì âíóòðü âàëîì àãðåãàòà. Ðîòîð ìîòîðà íå ñîïðèêàñàåòñÿ ñî ñòàòîðîì è êðåïèòñÿ íà ïîäøèïíèêè â ïîäøèïíèêîâûõ ùèòàõ àãðåãàòà ïî áîêàì ìîòîðà ñ îáåèõ ñòîðîí. Ñ îäíîé ñòîðîíû âûõîäèò ðàáî÷èé êîíåö âàëà, êîòîðûé áóäåò ïðèâîäèòü â äâèæåíèå òðåáóåìûé ìåõàíèçì, à ñ äðóãîé ñòîðîíû ìîòîðà íàõîäèòñÿ âåíòèëÿòîð, çàêðåïëåííûé íà âàëó ýëåêòðîäâèãàòåëÿ, è çàêðûâàåò âñþ ýòó êîíñòðóêöèþ êîæóõ âåíòèëÿòîðà. Åñëè òîãî òðåáóåò êîíñòðóêöèÿ, äâèãàòåëü ìîæåò èìåòü äâà âûõîäíûõ êîíöà âàëà. Ïîñëåäíèé è íå ìåíåå âàæíûé êîìïîíåíò ëþáîãî ìîòîðà ýòî êëåìíàÿ êîðîáêà âûâîäîâ, èíà÷å îíà íàçûâàåòñÿ ÁÎÐÍÎ. Ìîæåò ðàñïîëàãàòüñÿ ñâåðõó èëè ñáîêó ýëåêòðîäâèãàòåëÿ â çàâèñèìîñòè îò òåõíè÷åñêèõ òðåáîâàíèé ê ìîòîðó è ê åãî óñòàíîâêå. Åñëè äâèãàòåëü èìååò äîïîëíèòåëüíóþ ìîäèôèêàöèþ, îí ìîæåò êîìïëåêòîâàòüñÿ äîïîëíèòåëüíûì îáîðóäîâàíèåì, ê ïðèìåðó, åñëè äâèãàòåëü ñ òîðìîçîì, òî ïåðåä âåíòèëÿòîðîì îí áóäåò èìåòü â ñâîåì ñîñòàâå ýëåêòðîìàãíèòíûé òîðìîç. Åñëè äâèãàòåëü èñïîëüçóåòñÿ äëÿ ðàáîòû îò ïðåîáðàçîâàòåëÿ ÷àñòîòû, òî îí áóäåò íåèçìåííî îáîðóäîâàí óçëîì ïðèíóäèòåëüíîé âåíòèëÿöèè. Î ìîäèôèöèðîâàííûõ ìîòîðàõ ìû ïèñàëè â ýòîé ñòàòüå
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