I-MCCB vs MCB vs RCBO: Zisho Ukuthini?

I-MCCB iyisihlukanisi sesekethe esibunjiwe, futhi i-MCB iyisihlukanisi sesekethe esincane. Zombili zisetshenziswa kumasekhethi kagesi ukuze zinikeze ukuvikeleka kokudlulele. Ama-MCCB ajwayele ukusetshenziswa ezinhlelweni ezinkulu, kuyilapho ama-MCB asetshenziswa kumasekethe amancane.

I-RCBO iyinhlanganisela ye-MCCB kanye ne-MCB. Isetshenziswa kumasekhethi lapho kudingeka ukuvikelwa kwe-overcurrent kanye ne-short-circuit. Ama-RCBO awajwayelekile kakhulu kunama-MCCB noma ama-MCB, kodwa akhula ngokuduma ngenxa yekhono lawo lokuhlinzeka ngezinhlobo ezimbili zokuvikela kudivayisi eyodwa.

Ama-MCCB, ama-MCB, nama-RCBO wonke asebenza umsebenzi ofanayo oyisisekelo: ukuvikela amasekhethi kagesi ekulimaleni ngenxa yezimo zamanje ezidlulele. Nokho, ngayinye inezinzuzo zayo kanye nokubi. Ama-MCCB awakhulu futhi abiza kakhulu kwezintathu ongakhetha kuzo, kodwa angakwazi ukuphatha imisinga ephakeme futhi abe nempilo ende.

Ama-MCB mancane futhi ayabiza kancane, kodwa aphila isikhathi esifushane futhi angakwazi ukuphatha amaza aphansi kuphela.Ama-RCBO athuthuke kakhuluoption, futhi banikeza izinzuzo kokubili MCCBs kanye MCBs kudivayisi eyodwa.

Uma kukhona okungavamile okutholakele kusekethe, i-MCB noma i-miniature circuit breaker ivala ngokuzenzakalelayo isekhethi. Ama-MCB adizayinelwe ukuzwa kalula uma kukhona amandla amanje ngokweqile, okuvamise ukwenzeka uma kunomjikelezo omfushane.

Isebenza kanjani i-MCB? Kunezinhlobo ezimbili zoxhumana nabo ku-MCB - eyodwa engashintshi futhi enye egudlukayo. Lapho i-current egeleza kumjikelezo ikhula, ibangela ukuthi abathintwayo abasusekayo banqamuke koxhumana nabo abagxilile. Lokhu "kuvula" ngempumelelo isekethe futhi kumise ukugeleza kukagesi kumthombo oyinhloko. Ngamanye amazwi, i-MCB isebenza njengesinyathelo sokuphepha sokuvikela amasekhethi ekulayishweni ngokweqile nasekulimaleni.

I-MCCB (I-Molded Case Circuit Breaker)

Ama-MCCB aklanyelwe ukuvikela isifunda sakho ekulayisheni ngokweqile. Zihlanganisa izinhlelo ezimbili: eloku-overcurrent kanye nele-over-temperature. Ama-MCCB aphinde abe neswishi esebenza ngesandla yokukhubekisa isekethe, kanye noxhumana nabo be-bimetallic abanwebekayo noma abancibilika lapho izinga lokushisa le-MCCB lishintsha.

Zonke lezi zici ziyahlangana ukuze zenze idivayisi ethembekile, eqinile engasiza ukugcina isifunda sakho siphephile. Ngenxa yokuklama kwayo, i-MCCB ingaba yisinqumo esihle sezinhlelo zokusebenza ezihlukahlukene.

I-MCCB iyi-circuit breaker esiza ukuvikela okokusebenza emonakalweni ngokunqamula ukunikezwa okuyinhloko lapho i-current idlula inani elisethiwe. Lapho ukwanda kwamanje, abathintwayo ku-MCCB bayanda futhi bafudumale baze bavule, ngaleyo ndlela bephula isekethe. Lokhu kuvimbela umonakalo owengeziwe ngokuvikela okokusebenza ekunikezeni okukhulu.

Yini eyenza i-MCCB ne-MCB ifane?

Ama-MCCB nama-MCB womabili ama-breaker circuit ahlinzeka ngento yokuvikela kusekethe yamandla. Asetshenziswa kakhulu kumasekhethi kagesi aphansi futhi aklanyelwe ukuzwa nokuvikela isekethe kumasekethe amafushane noma ezimeni ezidlulele.

Ngenkathi abelana ngokufana okuningi, ama-MCCB ajwayele ukusetshenziselwa amasekhethi amakhulu noma lawo anamaza aphakeme, kuyilapho ama-MCB afaneleka kakhulu kumasekhethi amancane. Zombili izinhlobo ze-circuit breaker zidlala indima ebalulekile ekuqinisekiseni ukuphepha kwezinhlelo zikagesi.

Yini ehlukanisa i-MCCB ne-MCB?

Umehluko omkhulu phakathi kwe-MCB ne-MCCB amandla abo. I-MCB inesilinganiso esingaphansi kwama-amps ayi-100 esinesilinganiso sokuphazamisa ama-amps angaphansi kuka-18,000, kuyilapho i-MCCB inikeza ama-amps aphansi afinyelela ku-10 futhi afinyelela phezulu afika ku-2,500. Ngaphezu kwalokho, i-MCCB ifaka isici sohambo esingalungiseka kumamodeli athuthuke kakhulu. Ngenxa yalokho, i-MCCB ifaneleka kakhulu kumasekhethi adinga umthamo ophakeme.

Okulandelayo kukhona umehluko obalulekile phakathi kwezinhlobo ezimbili zama-circuit breaker:

I-MCCB wuhlobo oluthile lwe-circuit breaker olusetshenziselwa ukulawula nokuvikela amasistimu kagesi. Ama-MCB nawo angama-circuit breaker kodwa ayahluka ngokuthi asetshenziselwa izinto zasendlini kanye nezidingo zamandla aphansi.

Ama-MCCB angasetshenziselwa izifunda ezidinga amandla aphezulu, njengezimboni ezinkulu.

Ama-MCBsube nesekhethi enqunyiwe ngenkathi uku-MCCBs, isekethe ekhubekayo iyasuswa.

Mayelana nama-amps, ama-MCB anama-amps angaphansi kwe-100 kuyilapho ama-MCCB angaba nama-amps angu-2500 aphezulu.

Akwenzeki ukuvula nokuvala ukude i-MCB kuyilapho kungenzeka ukwenza kanjalo nge-MCCB ngokusebenzisa intambo ye-shunt.

Ama-MCCB asetshenziswa kakhulu ezimeni lapho kukhona amandla amanje esinda kakhulu kuyilapho ama-MCB angasetshenziswa kunoma iyiphi isekethe yamanje ephansi.

Ngakho-ke, uma udinga i-circuit breaker yekhaya lakho, ungasebenzisa i-MCB kodwa uma uyidinga endaweni yezimboni, uzosebenzisa i-MCCB.