Ungawakhetha kanjani ama-A, B, C, NOMA D ama-circuit breaker amancane e-MCB

Kunezici ezine zohambo olujwayelekile lweama-breaker circuit amancane: A, B, C, kanye no-D. Ngakho sikhetha kanjani?

(1)UHLOBO I-circuit breaker: Izikhathi ezi-2 kunamanje olinganiselwe, okungavamile ukusetshenziswa, ngokuvamile okusetshenziselwa ukuvikela i-semiconductor (ngokuvamile sebenzisa i-fuse);Okubizwa ngokuthi inombolo yezikhathi zamanje, ingumthelela wamanje, ukumelana nesikhathi esithile sokushintsha akuhambi, izici zayo ukugwema umthelela wamanje.

Ukukhethwa kwedivayisi yokukhubeka yei-low-voltage circuit breaker: uhlobo lwedivayisi ekhubekayo lweI-circuit breakerinedivayisi yokukhubeka yamanje, idivayisi yokukhubeka engaphansi kwe-voltage, idivayisi ye-shunt tripping, njll. Idivayisi ye-Overcurrent tripping ingaphinda ihlukaniswe ibe idivayisi yokukhubeka egcwele kakhulu kanye nedivayisi yokukhubeka yamanje, futhi inokubambezeleka okude, ukubambezeleka okufushane, amaphoyinti asheshayo, i-overcurrent. idivayisi yokukhubeka iyona esetshenziswa kakhulu.Inani lokusetha lamanje lesenzo sedivayisi ekhubekayo lingalungiswa noma lilungiseke, ngokuvamile ngokuzungezisa noma ngokulungisa i-lever.Idivayisi ye-electromagnetic overcurrent tripping inezigxivizo ezimbili ezifanayo nezilungisekayo.Idivayisi ye-electronic overcurrent tripping ngokuvamile iyalungiseka.

Amandla okuphuka aI-circuit breakerisho ikhono lokumelana nomthamo omkhulu wamanje we-short-circuit, ngakho-ke amandla okuphuka kwe-rotary circuit breaker kufanele abe mkhulu kunomshini we-short-circuit wamanje wemishini yayo yokuvikela.Uhambo oludlulele ngokuya ngokufaka futhi lungahlukaniswa ngokufakwa okuhleliwe noma I-module, elungiselelwe ukufakwa kohambo lwefekthri kanye ne-circuit breaker icutshungulwa ibe yi-organic yonke, kanye ngemva kokushiya isilinganiso samanje sohambo siyalungiseka, futhi uhambo lokufakwa kwe-modular njengamamojula afakiwe we-circuit breaker, angalungiseka, ukuguquguquka eqinile.

Uhlobo olusheshayo: 0.02s, ukuvikela isifunda esifushane;

Uhlobo lokulibaziseka olufushane: ama-0.1-0.4s, asetshenziselwa isifunda esifushane, ukuvikela ukulayisha ngokweqile;

Ukubambezeleka okude: ngaphansi kuka-10S, kusetshenziselwa ukuvikela ukugcwala ngokweqile;

Okusetshenziswa kakhulu njengamanjeUchungechunge lwe-DZukushintsha umoya (i-breaker circuit encanengokuvikelwa kokuvuza), izici ezivamile yilezi: C16, C25, C32, C40, C60, C80, C100, phakathi kwazo u-C umele ukususa isici samanje ngu-C, okungukuthi i-jump current, isibonelo i-C20 iveza i-jump current ingu-20A, isici sohambo i-C curve, faka i-heater yamanzi engu-3500W ukuze ufune ukukhetha i-circuit breaker ye-C20 ngokuvamile, faka i-heater yamanzi engu-6500W ukuze ufune ukusebenzisa i-circuit breaker ye-C32.

I-Circuit breaker isetshenziselwa ukuvikela ucingo nokuvimbela umlilo, ngakho-ke ngokobukhulu bocingo okufanele ukhethe kunokuba ngokusho kwamandla okukhethwa kukagesi.Uma i-circuit breaker inkulu kakhulu, ngeke ivikele ucingo.Uma intambo igcwele kakhulu, i-circuit breaker ngeke isagxuma, okuzoletha izingozi ezifihliwe ekuphepheni kwasekhaya.

1.5 intambo yesikwele eneswishi ye-C10

Intambo yesikwele engu-2.5 eneswishi ye-C16 noma engu-20

4 izintambo zesikwele ezineswishi ye-C25

6 izintambo zesikwele ezineswishi ye-C32

Ngobaamaswishi emoyeniesetshenziselwa izinjini ezinomthwalo, izici zohlobo D kufanele zikhethwe ukuze kugwenywe ukuphakama okuphezulu kokuqala kwemoto ephindwe izikhathi ezingu-5-8.

(2) Isihlukanisi sesekhethi sohlobo luka-B: izikhathi ezi-2-3 kunesamanje esilinganiselwe, ngokuvamile sisetshenziselwa ukulayisha okuqinile okuqinile kanye nesekhethi yokukhanyisa i-voltage ephansi, evame ukusetshenziselwa ibhokisi lokusabalalisa lasendlini, ukuvikela izinto zikagesi zasendlini nokuphepha komuntu siqu, ukusetshenziswa okuncane okwamanje.

(3) I-C Type breaker: Izikhathi ezingu-5-10 zamanje ezilinganiselwe, zidinga ukuphumula kwemizuzwana engu-0.1, izici ze-circuit breaker yizona ezisetshenziswa kakhulu, ezivame ukusetshenziselwa ukuvikela imigqa yokusabalalisa kanye nemigqa yokukhanyisa ngokushintsha okuphezulu kwamandla.

(4) Isiphazamisi sesekethe sohlobo lwe-D: izikhathi eziyi-10-20 zamanje ezilinganiselwe, ikakhulukazi ekusetshenzisweni kwendawo enkulu kagesi esheshayo, umndeni ojwayelekile awusetshenziswa kancane, ulungele umuzwa ophezulu womthwalo kanye nesistimu yamanje yomthelela omkhulu, evame ukusetshenziselwa ukuvikela. imishini enomthelela omkhulu wamanje.