Uhlalutyo lweMisebenzi kunye nezicelo ze-DC MCB

UkuqondaI-DC MCB: Isikhokelo Esipheleleyo

Igama elithi “i-DC miniature circuit breaker” (DC MCB) lifumana ingqwalasela eyandayo kwicandelo lobunjineli bombane kunye nokusasazwa kwamandla. Njengoko imfuno yeenkqubo zombane ezisebenzayo nezithembekileyo iqhubeka ikhula, ukuqonda indima kunye nomsebenzi wee-DC miniature circuit breakers kubalulekile kwiingcali kunye nabantu abathanda izinto ezifanayo.

Yintoni iIsixhobo sokwaphula isekethe esincinci se-DC?

I-DC miniature circuit breaker (MCB) sisixhobo esikhuselayo esiqhawula isekethe ngokuzenzekelayo xa kukho i-overload okanye i-short circuit. Ngokungafaniyo ne-AC miniature circuit breakers, ezisetyenziswa kwiinkqubo ze-AC, i-DC miniature circuit breakers zenzelwe ngokukodwa usetyenziso lwe-DC. Lo mahluko ubalulekile kuba iimpawu zangoku zeenkqubo ze-DC zahlukile kakhulu kwezo zeenkqubo ze-AC, ngakumbi ngokubhekiselele kwiimpawu zangoku ze-arc extinction kunye ne-fault current.

Ukubaluleka kwee-DC Miniature Circuit Breakers

Ukubaluleka kwee-DC miniature circuit breakers akunakugxininiswa kakhulu, ingakumbi kwiindawo apho amandla e-DC axhaphakileyo khona. Ezi zicelo ziquka iinkqubo zamandla avuselelekayo ezifana nokufakelwa kwe-solar photovoltaic (PV), iinkqubo zokugcina amandla ebhetri, kunye nezithuthi zombane. Kwezi meko, ukuthembeka kunye nokhuseleko lwenkqubo yombane kubaluleke kakhulu, nto leyo eyenza indima yee-DC miniature circuit breakers ibe yeyona ibalulekileyo.

1. Ukhuseleko Lomthwalo Ogqithisileyo: Ii-DC miniature circuit breakers (ii-MCB) zisetyenziselwa ukukhusela iisekethe ekugqithiseni kakhulu. Xa umbane udlula umthamo wesekethe olinganisiweyo, i-MCB iyawa, ithintele ukonakala kwesekethe nakwizixhobo ezixhunyiweyo.
2. Ukhuseleko lwe-short-circuit: Xa kwenzeka i-short circuit, ii-DC miniature circuit breakers (ii-MCB) zikhawuleza ziqhawule i-circuit, nto leyo enciphisa umngcipheko womlilo kunye nomonakalo wezixhobo. Olu kusabela ngokukhawuleza lubalulekile ekugcineni ukhuseleko lwenkqubo yombane.
3. Indlela yokuseta kwakhona elula ukuyisebenzisaEmva kohambo, i-DC miniature circuit breaker inokuphinda isetyenziswe ngokulula, ibuyisele amandla ngokukhawuleza ngaphandle kokutshintsha i-circuit breaker, nto leyo ephucula lula ulawulo lwenkqubo yamandla.

Iimpawu eziphambili zee-DC miniature circuit breakers

Xa ukhetha i-DC miniature circuit breaker, kufuneka kuqwalaselwe iimpawu ezibalulekileyo:

Ikaliwe ngoku: Ii-DC miniature circuit breakers (ii-MCB) ziyafumaneka kwiindidi ezahlukeneyo ze-currents ezilinganisiweyo, okuvumela abasebenzisi ukuba bakhethe isixhobo esifanelekileyo ngokusekwe kwiimfuno zabo ezithile zesicelo. Ukukhetha i-current miniature circuit breaker efanelekileyo kubalulekile ukuqinisekisa ukhuseleko olufanelekileyo.

• I-voltage elinganisiweyo: I-voltage elinganisiweyo ye-DC miniature circuit breaker ibonisa i-voltage ephezulu enokumelana nayo. Kubalulekile ukukhetha i-miniature circuit breaker ehambelana nenqanaba le-voltage yenkqubo eza kufakwa kuyo.
• Iimpawu zohambo: Ii-miniature circuit breakers ezahlukeneyo zineempawu ezahlukeneyo zokujika, ezichaza ukuba zisabela ngokukhawuleza kangakanani kwi-overloads kunye ne-short circuits. Ukuqonda ezi mpawu kubalulekile ukuqinisekisa ukhuseleko kunye nokuthembeka kweenkqubo zombane.
• Ukufakelwa kunye nokugcinwa: Ii-DC miniature circuit breakers (ii-MCB) zenzelwe ukufakeka nokugcinwa lula. Zingafakelwa kwiireyile zeDIN eziqhelekileyo kwaye zifanelekile kwiintlobo ngeentlobo zezicelo ukusuka kwiindawo zokuhlala ukuya kwiindawo zoshishino.

Ukusetyenziswa kwee-DC Miniature Circuit Breakers

Ii-DC miniature circuit breakers zineendlela ezahlukeneyo zokusetyenziswa, kuquka:

• Inkqubo Yokuvelisa Amandla Elanga: Kwiifektri ze-photovoltaic zelanga, ii-DC MCB zikhusela iingcingo kunye nezinto ezisetyenziswayo kwiingxaki ezinkulu kunye neesekethe ezimfutshane, ziqinisekisa ukhuseleko kunye nokusebenza kakuhle kwenkqubo.
• Iinkqubo zokugcina iibhetriNjengoko izisombululo zokugcina amandla zisanda, ii-DC MCB zidlala indima ebalulekileyo ekukhuseleni iinkqubo zebhetri kwiingxaki zombane.
• Izithuthi zombane: Kwizithuthi zombane, ii-DC MCB zibalulekile ekukhuseleni iinkqubo zombane zesithuthi, ukuqinisekisa ukusebenza ngokukhuselekileyo kunye nokuthintela umonakalo.

 

Yintoni umahluko phakathi kwe-AC MCB kunye ne-DC MCB?

I-AC MCB yenzelwe le ndlela yokunqumla umbane ngaphandle kokuyila, ngoko ke ukucinezelwa kwe-arc akunzima kangako. Ngokwahlukileyo koko, ii-DC MCB zifuna ii-arc chutes ezinkulu okanye iimagnethi ukuze zikwazi ukusingatha umsinga we-DC ozinzileyo kuba uhamba kwicala elinye kuphela. Ezi zinto zisusa ubushushu kwaye zicime i-arc, ziqinisekisa ukuphazamiseka okukhuselekileyo.

 

Kufuphi

Ngamafutshane, ii-DC miniature circuit breakers (ii-MCB) zizinto ezibalulekileyo kwiinkqubo zombane ze-DC zanamhlanje. Amandla azo okukhusela i-overload kunye ne-short-circuit azenza zibe yimfuneko kwizicelo ezifana namandla ahlaziyekayo, ukugcinwa kwamandla ebhetri, kunye nezithuthi zombane. Njengoko itekhnoloji iqhubeka iphucula, ukuqonda nokusebenzisa ii-DC miniature circuit breakers kuya kuba baluleke ngakumbi ekuqinisekiseni ukhuseleko kunye nokuthembeka kweenkqubo zombane kwihlabathi elinombane ngakumbi.