Isihloko: Ukubaluleka kunye nomsebenzi weabaphuli beesekethe ezincinci
Yazisa:
Iziqhekeza zesekethe ezincinci (MCBs)dlala indima ephambili ekuqinisekiseni ukhuseleko nokuthembeka kweenkqubo zombane.Ezi zixhobo ziye zaba yinxalenye ebalulekileyo yofakelo lombane lwanamhlanje, olusetyenziselwa ukuthintela iziphene zombane kunye nokunciphisa umonakalo onokwenzeka.Eli nqaku liphonononga ukubaluleka kunye nomsebenzi waba balindi be-compact, ebonisa ukubaluleka kwabo kwintsimi yobunjineli bombane.
1. Qonda izaphuli zesekethe ezincinci:
A i-breaker circuit encinci, edla ngokufinyezwa njengeMCB, sisitshixo sombane esizenzekelayo esenzelwe ukukhusela iisekethe zombane kwi-overcurrent and short circuits.Ezi zixhobo zihlala zifakwe kwii-switchboards, izixhobo zabathengi kunye neebhokisi ze-fuse njengomgca wokuqala wokukhusela ukusilela kombane.
2. Iimpawu eziphambili kunye namacandelo:
Ii-MCBszaziwa ngobungakanani bazo obubambeneyo, obuhlala kwindawo enye yeemodyuli ngaphakathi kwebhodi yokutshintsha.Nangona kunjalo, ubungakanani babo obuncinci buphikisana nokubaluleka kwabo ekugcineni ukhuseleko lombane.Amacandelo aphambili eMCBbandakanya isixhobo sokutshintsha, abafowunelwa kunye nendlela yokuhamba.
Umatshini wokutshintsha uvumela ukusebenza ngesandla, okwenza ukuba umsebenzisi avule okanye avale isiphaluka ngesandla.Abafowunelwa, ngakolunye uhlangothi, banoxanduva lokuqhuba kunye nokuphazamisa i-current flowing through the circuit.Ekugqibeleni, indlela yohambo ibona i-overcurrent okanye isiphaluka esifutshane kwaye ibangeleMCBukuvula isiphaluka, ngaloo ndlela ikhusela inkqubo.
3. Ukhuseleko lwangoku:
Omnye wemisebenzi ephambili yeMCBkukuthintela i-overcurrent.I-Overcurrent iyenzeka xa ubuninzi bangoku buhamba ngesekethe kunomthamo wayo olinganisiweyo, onokukhokelela ekugqithiseni kunye nomonakalo onokwenzeka kumacandelo ombane.Ii-MCBsphendula kule meko ngokuphazamisa ngokukhawuleza isiphaluka sombane, ngaloo ndlela ukuthintela ukushisa nokunciphisa umngcipheko womlilo wombane.
4. Ukhuseleko lwesekethe emfutshane:
Enye indima ebalulekileyo yeMCBkukuthintela ukujikeleza okufutshane.Isiphaluka esifutshane senzeke xa uxhulumaniso lwengozi (ngokuqhelekileyo ngenxa yokungahambi kakuhle okanye ukungaphumeleli kwe-insulation) kubangela ukugqithisa ngokugqithisileyo kwisiphaluka.Isekethe emfutshane inokubangela umonakalo omkhulu kwisixhobo kwaye inokubangela nomlilo.Ixesha lokuphendula ngokukhawuleza kwe-MCB lenza ukuba ibone iisekethe ezimfutshane kwaye iphazamise isiphaluka ngaphambi kokuba kwenzeke umonakalo omkhulu.
5. Umahluko ngefuse:
Ngelixa zombini ii-MCBs kunye neefuse zibonelela ngokhuseleko kwiimpazamo zombane, kukho umahluko omkhulu phakathi kwezi zimbini.I-Fuses iquka iingcingo ezibhityileyo okanye imicu yentsimbi enyibilikayo xa kuqukuqela kakhulu ngoku, iqhekeza isekethe.Nje ukuba ifuse ivuthe, kufuneka itshintshwe.Ngokwahlukileyo, ii-MCBs akufuneki zitshintshwe emva kokukhubeka.Kunoko, ziyakwazi ukusetwa kwakhona ngokulula emva kokuba ukusilela kweengcambu kuphandwe kwaye kusonjululwe, okwenza kube lula kwaye kungabizi kakhulu ekuhambeni kwexesha.
6. Ukukhetha kunye noCalucalulo:
Kwiinkqubo zombane ezinzima apho ezininziIi-MCBszifakwe kuthotho, iikhonsepthi zokukhetha kunye nocalucalulo zibalulekile.Ukukhethwa kubhekiselele kwisakhono se-MCB ukwahlula isiphaluka esinempazamo ngaphandle kokuphazamisa inkqubo yonke.Ukwahlula, ngakolunye uhlangothi, kuqinisekisa ukuba i-MCB esondeleyo kwi-fault trips kuqala, ngaloo ndlela inciphisa ukuphazamiseka ekufakeni.Ezi mpawu zivumela impendulo ekujoliswe kuyo kwiintsilelo zombane, ukuqinisekisa ukuqhubeka kweenkonzo eziyimfuneko ngelixa kufunyanwa kunye nokujongana nonobangela osisiseko wokungaphumeleli.
ukuququmbela:
Abaphuli beesekethe ezincincingokungathandabuzekiyo ziyinxalenye ebalulekileyo yeziseko zombane zanamhlanje.Ngokubonelela ngokugqithisileyo kunye nokukhuselwa kwesiphaluka esifutshane, ii-MCBs zinceda ukukhusela izixhobo, ukunciphisa umonakalo kunye nokukhusela umlilo wombane.Ubungakanani babo obubambeneyo, ukusebenziseka ngokulula, kunye nokukwazi ukuseta kwakhona emva kohambo kubenza bangabiziindleko ezingezinye kwiifusi zesintu.Kubalulekile ukukhumbula ukuba ukufakela okufanelekileyo kunye nokugcinwa rhoqo kwee-MCBs kubalulekile kwinkqubo yombane esebenzayo nethembekileyo.Ngokuqonda ngokufanelekileyo kunye nokusebenzisa iziqhekeza zesekethe ezincinci, sinokuphucula ukhuseleko olupheleleyo kunye nokusebenza kakuhle kofakelo lombane.
Ixesha lokuposa: Aug-07-2023