Umhla:Dec-03-2024
Ukubunjwa Case Circuit Breakers(Ii-MCCBs) imele inkqubela phambili ebalulekileyo kubuchwepheshe bokukhusela umbane, isebenza njengezixhobo zokhuseleko ezibalulekileyo kwiinkqubo zombane zanamhlanje. Ezi zaphuli zesekethe ezinobugocigoci zidibanisa iindlela zokukhusela ezomeleleyo kunye noyilo oludibeneyo, olunikezela ngokhuseleko olubanzi ngokuchasene neziphoso ezahlukeneyo zombane kubandakanya ukugcwala, iisekethe ezimfutshane, kunye neempazamo zomhlaba. Ifakwe kwindawo ehlala ihleli, i-insulated izindlu, ii-MCCB zenzelwe ukubonelela ngokhuseleko lwesekethe ethembekileyo ngelixa uqinisekisa ukuhanjiswa kwamandla okukhuselekileyo kunye nokusebenza kakuhle kwizakhiwo, izibonelelo zoshishino kunye neendawo zorhwebo. Ukuguquguquka kwabo kuvumela ukulungelelaniswa ngokusetwa kohambo oluhlengahlengiswayo, kubenza balungelelane neemfuno ezahlukeneyo zombane kunye neemeko zomthwalo. Ngokungafaniyo nezaphuli zesekethe ezilula, ii-MCCBs zibonelela ngeempawu ezongeziweyo ezinje nge-thermal-magnetic okanye iiyunithi zohambo lwe-elektroniki, amandla aphezulu okuphazamisa, kunye nolungelelwaniso olungcono nezinye izixhobo zokukhusela kwinkqubo yombane. Oku kubenza babe yimfuneko kufakelo lombane lwanamhlanje apho ukuhanjiswa kwamandla okuthembekileyo kunye nokhuseleko lwezixhobo kubaluleke kakhulu, ngakumbi kwizicelo ezifuna imisinga ukusuka kwii-amperes ezimbalwa ukuya kumawaka aliqela e-ampere.
Ii-MCCBs zibonelela ngokhuseleko olubanzi ekuqukunjelweni kwangoku ngokugqithisileyo ngenkqubo yokhuselo oluphindwe kabini. Into yokukhusela i-thermal isebenzisa umgca we-bimetallic ophendula kwiimeko ezigciniweyo zokugqithiswa ngokugoba xa ushushu, uvuselela indlela yokuqhawula. Icandelo lokukhusela imagnethi liphendula ngokukhawuleza kwimisinga ye-short-circuit current usebenzisa i-electromagnetic solenoid. Le ndlela imbini iqinisekisa ukukhuselwa komthwalo ngokuthe ngcembe kunye nokhuseleko olukhawulezayo lwesekethe, ukukhusela iinkqubo zombane kunye nezixhobo kumonakalo onokwenzeka. Izicwangciso zohambo ezilungelelanisiweyo zivumela abasebenzisi ukuba benze amanqanaba okhuseleko asekelwe kwiimfuno ezithile zesicelo, ezenza ukuba zisebenziseke kwizinto ezahlukeneyo zofakelo lombane.
Enye yezona zinto zibaluleke kakhulu kwii-MCCBs luseto lwazo lohambo oluhlengahlengiswayo, oluvumela ulungelelwaniso oluchanekileyo lweeparamitha zokhuseleko. Abasebenzisi banokutshintsha i-thermal kunye ne-magnetic trip thresholds ukuhambelana neemfuno ezithile zomthwalo kunye neemfuno zolungelelaniso. Olu lungelelaniso lubandakanya izicwangciso zokukhusela ukulayisha ngaphezulu (ngokuqhelekileyo i-70-100% yangoku elinganisiweyo), izicwangciso zokukhusela i-short-circuit, kwaye kwezinye iimeko, izicwangciso zokukhusela umhlaba. Ii-MCCBs zanamhlanje zihlala zibandakanya iiyunithi zohambo lwe-elektroniki ezibonelela ngezakhono zohlengahlengiso ezichanekileyo, kubandakanya ukulibaziseka kwexesha kunye namanqanaba okuthatha, okwenza ulungelelwaniso olungcono kunye nezinye izixhobo zokukhusela kwinkqubo yombane.
Ii-MCCBs ziyilelwe ngamandla okuphazamisana aphezulu, ezikwaziyo ukophula ngokukhuselekileyo imisinga yempazamo amaxesha amaninzi ireyithingi yazo. Olu phawu lubalulekile ekugcineni ukhuseleko lwesixokelelwano ngexesha leemeko ezimbi kakhulu. Umthamo wokuphazamisa unokusuka kwi-10kA ukuya kwi-200kA okanye ngaphezulu, kuxhomekeke kwimodeli kunye neemfuno zesicelo. Ikhono le-breaker ukuphazamisa imisinga ephezulu yempazamo ngaphandle komonakalo okanye ingozi ifezekiswa ngamagumbi okucima i-arc, izixhobo zoqhagamshelwano kunye neendlela zokusebenza. Lo mandla ophazamisayo ophezulu wenza ukuba ii-MCCB zilungele zombini ukhuseleko lwesekethe ephambili kunye nezicelo ezibalulekileyo zesekethe apho amandla akhoyo esiphoso abalulekile.
Ukwakhiwa kwetyala elibunjiweyo le-MCCBs libonelela ngokugqwesa ukugquma kunye nokhuseleko kwizinto zokusingqongileyo. Izinto zezindlu ezikhuselayo kunye nombane ziqinisekisa ukhuseleko lwabaqhubi kwaye zikhusela amacandelo angaphakathi kuthuli, ukufuma, kunye nokuvezwa kweekhemikhali. Olu lwakhiwo lomeleleyo lwenza ukuba ii-MCCB zilungele iimeko ezahlukeneyo zokufakela, ukusuka kwiindawo ezicocekileyo zangaphakathi ukuya kwiimeko ezinzima zemizi-mveliso. Izindlu nazo zibandakanya iimpawu ezifana nemilinganiselo ye-IP kumanqanaba ahlukeneyo okukhusela okusingqongileyo kunye nezakhiwo ezinqanda ilangatye, ukuqinisekisa ukuthembeka kwexesha elide kunye nokhuseleko kwizicelo ezahlukeneyo.
Ii-MCCBs zibandakanya izibonakaliso ezibonakalayo ezicacileyo ezibonisa isimo sokusebenza kwe-breaker, kubandakanywa isikhundla se-ON / OFF, isimo sohambo, kunye nohlobo lwesiphoso. Ezi zalathi zinceda abasebenzi bolondolozo ngokukhawuleza ukuchonga unobangela wohambo, nokuba kungenxa yomthwalo omninzi, isiphaluka esifutshane, okanye isiphene somhlaba. Iimodeli ezikwinqanaba eliphezulu zingabandakanya iziboniso ze-LED okanye ufundo lwedijithali olubonisa amanqanaba angoku, imbali yempazamo, kunye nolunye ulwazi lokuxilonga. Olu phawu luphucula ukusebenza kakuhle kogcino kwaye lunceda ekuxazululeni iingxaki zombane, ukunciphisa ixesha lokuphumla nokuphucula ukuthembeka kwenkqubo.
Ii-MCCBs zanamhlanje zinokuxhotyiswa ngezixhobo ezahlukeneyo ezincedisayo kunye nezixhobo eziphucula ukusebenza kwazo. Oku kubandakanya abafowunelwa abancedisayo bokubeka iliso kwimo ekude, abafowunelwa be-alam besalathiso sempazamo, iihambo ezithi shunt kuhambo olude, kunye nabaqhubi beemoto ukusebenza kude. Ezi zincedisi zenza ukuba kudityaniswe neenkqubo zolawulo lwezakhiwo, iinkqubo zeSCADA, kunye namanye amaqonga okubeka iliso nokulawula. Uyilo lwemodyuli luvumela ukufakwa lula kwezi zincedisi, ukwenza i-MCCBs ilungelelanise nokutshintsha iimfuno zenkqubo kunye neemfuno ezizenzekelayo.
Ii-MCCB eziphucukileyo zibandakanya imisebenzi yememori eshushu elandelela imeko yobushushu beesekethe ezikhuselweyo nasemva kwesiganeko sohambo. Olu phawu luqinisekisa ukuba xa uvalwa emva kohambo olushushu, i-breaker akhawunti yokushisa okushiyekileyo kwisiphaluka, ukuthintela umonakalo onokuthi udibanise ngokukhawuleza kwisekethe esele ishushu. Umsebenzi wememori ye-thermal uphucula ukuchaneka kokhuseleko kunye nexesha elide lezixhobo ngokuqwalasela iziphumo eziqokelelweyo zeemeko ezininzi zokulayisha ngaphezulu kwexesha.
Ii-MCCBs zanamhlanje zibandakanya iiyunithi zohambo lwe-elektroniki eziphucukileyo eziphucula kakhulu amandla okhuseleko kunye nemisebenzi yokubeka iliso. Ezi yunithi zisekwe kwi-microprocessor zibonelela ngokuchanekileyo ngoku ukubona ngoku kunye ne-algorithms yokukhusela ephezulu enokuthi icwangciswe kwizicelo ezithile. Iiyunithi zohambo lwe-elektroniki zibonelela ngeempawu ezifana nomlinganiselo wangoku we-RMS yokwenyani, uhlalutyo lwe-harmonic, ukujongwa komgangatho wamandla, kunye nesakhono sokuloga idatha. Bangabonisa iiparamitha zombane zexesha lokwenyani kubandakanya okwangoku, umbane, amandla ombane, kunye nokusetyenziswa kwamandla. Imifuziselo ekwinqanaba eliphezulu ibandakanya ujongano lonxibelelwano lokubekwa kweliso okude kunye nolawulo, ukwenza ukudityaniswa kunye neenkqubo zegridi ezihlakaniphile kunye namaqonga olawulo lwamandla. Iiyunithi zohambo lwe-elektroniki zikwaququzelela ugcino lothintelo ngohlalutyo oluqikelelweyo, ukujonga ukunxitywa koqhagamshelwano, kunye nokubonelela ngesilumkiso sangethuba semiba enokwenzeka, ibenza baxabiseke kwiinkqubo zanamhlanje zokuhambisa amandla.
Ii-MCCBs ziyilelwe ngezakhono zokuvavanya ezakhelwe ngaphakathi ezivumela ukugcinwa rhoqo kweetshekhi ngaphandle kokususa i-breaker enkonzweni. Amaqhosha ovavanyo avumela ukuqinisekiswa kweendlela zohambo, ngelixa ezinye iimodeli ziquka izibuko zovavanyo lovavanyo lwenaliti yemisebenzi yokhuseleko. Ii-MCCB ze-elektroniki eziphucukileyo zinokubandakanya iimpawu zokuzihlola ezihlala zibeka iliso kumalungu angaphakathi kwaye zilumkise abasebenzisi kwiingxaki ezinokuthi zibe kho. Ezi mpawu zokulondoloza ziqinisekisa ukusebenza okuthembekileyo kunye nokunceda ukukhusela ukungaphumeleli okungalindelekanga ngokuvavanywa rhoqo kunye nokugcinwa kokukhusela.
Ii-MCCBsukumela ukuqhubela phambili okubalulekileyo kwitheknoloji yokukhusela isiphaluka, ukudibanisa iindlela zokukhusela eziyinkimbinkimbi kunye nokwakhiwa okunamandla kunye nokusebenza ngeendlela ezahlukeneyo. Iseti yeempawu zabo ezibanzi zibenza babaluleke kakhulu kwiinkqubo zombane zanamhlanje, zibonelela ngokhuseleko oluthembekileyo kwiimpazamo ezahlukeneyo zombane ngelixa unikezela ukuguquguquka okufunekayo kwizicelo ezahlukeneyo. Ukudityaniswa kwezicwangciso ezilungelelanisiweyo, amandla aphezulu okuphazamisa, kunye nezakhono zokubeka iliso eziphambili ziqinisekisa ukulungelelaniswa kokukhusela kunye nokuthembeka kwenkqubo. Ngokudityaniswa kwezixhobo ezincedisayo kunye nobuchule bonxibelelwano, ii-MCCBs ziyaqhubeka nokuvela, ukuhlangabezana neemfuno ezikhulayo zeenkqubo zokuhambisa amandla zangoku kunye nobuchwepheshe bokwakha ngobuchule. Indima yabo ekukhuselweni kombane kunye nokukhusela inkqubo ibenza babe yinxalenye ebalulekileyo ekuyilweni nasekusebenzeni ukufakelwa kombane kuwo onke amacandelo, ukusuka kwizakhiwo zoshishino ukuya kwizakhiwo zorhwebo kunye neziseko ezibalulekileyo.
Qhagamshelana nathi
