Umkhiqizo Odume Kakhulu - CNAISO MCB

1. UhlolojikelelekweI-MCB 

I-miniature circuit breaker, ebizwa nge-MCB (Micro Circuit Breaker/ Miniature Circuit Breaker), iwumshini osetshenziswa kakhulu wokuvikela isiphetho ekwakheni amadivaysi okusabalalisa amandla kagesi.Isetshenziselwa umjikelezo omfishane wesigaba esisodwa nesigaba sesithathu, ukuvikelwa kokulayishwa ngokweqile kanye nokugcwala ngokweqile kwe-overvoltage ngaphansi kwe-125A, kufaka phakathi i-single-pole 1P, i-2P yezigxobo ezimbili, i-3-pole 3P, kanye ne-4P yezigxobo ezine.

2. KanjaniI-MCBSebenza?

Ama-circuit breaker amancane akhiwe ngezindlela zokusebenza, abathintwayo, amathuluzi okuvikela (ukukhishwa okuhlukahlukene), kanye nezinhlelo zokucisha i-arc.Oxhumana nabo abakhulu basebenza mathupha noma bavalwe ngogesi.Ngemva kokuba othintana naye oyinhloko evaliwe, indlela yohambo lwamahhala ikhiya othintana naye oyinhloko endaweni evaliwe.Ikhoyili yokukhululwa kwe-overcurrent kanye ne-thermal element yokukhululwa kwe-thermal ixhunywe kuchungechunge nesekhethi eyinhloko, futhi ikhoyili yokukhishwa kwe-undervoltage ixhunywe ngokuhambisana nokunikezwa kwamandla.Uma isekethe ine-circuited emfushane noma ilayishwe kakhulu, i-armature yokukhululwa kwe-overcurrent idonselwa ukuze kwenziwe indlela yohambo lwamahhala lusebenze, futhi othintana naye oyinhloko unqamula isekethe enkulu.Uma isifunda sigcwele kakhulu, isici esishisayo sokukhululwa kwe-thermal sizoshisa futhi agobe i-bimetal, iphushe indlela yokukhulula ukuze isebenze.Uma isifunda singaphansi kwamandla, i-armature yokukhululwa kwe-undervoltage iyakhululwa.Futhi vula indlela yohambo lwamahhala

3.Inhloso yeI-MCB ?

Ekwakhiweni kwesakhiwo somphakathi, ama-low-voltage circuit breaker asetshenziselwa kakhulu ukulayisha ulayini, i-short-circuit, over-current, ukulahleka kwamandla kagesi, i-under-voltage, ukubeka phansi, ukuvuza, ukushintsha okuzenzakalelayo kwemithombo yamandla amabili, nokuvikela nokusebenza kwamamotho ngesikhathi. ukuqala okungajwayelekile.Izimiso Ngaphezu kokuthobelana nezimiso eziyisisekelo ezifana nezici zendawo yokusetshenziswa kwezinto zikagesi ezine-voltage ephansi (bona Incwadi Yokuklama I-Industrial and Civil Power Distribution), lezi zimo ezilandelayo kufanele zicatshangelwe:

I-1) I-voltage elinganiselwe ye-breaker circuit akufanele ibe ngaphansi kwe-voltage elinganiselwe yomugqa;

2) Isilinganiso samanje se-circuit breaker kanye nesilinganiso samanje sokukhululwa kwe-overcurrent ayikho ngaphansi kwamandla okubaliwe komugqa;

I-3) Isilinganiso sokuphulwa kwe-short-circuit breaker ye-circuit breaker ayikho ngaphansi kwe-current short-circuit current emgqeni;

4) Ukukhethwa kwezinqamuli zesekethe zokusabalalisa amandla kudinga ukucabangela amandla okucima isekethe emfishane kanye nokuxhumana phakathi kwamazinga okuvikela ukubambezeleka;

5) I-voltage elinganiselwe yokukhululwa kwe-undervoltage ye-breaker circuit ilingana ne-voltage elinganiselwe yomugqa;

I-6) Uma isetshenziselwa ukuvikelwa kwezimoto, ukukhethwa kwe-breaker circuit kufanele kucabangele ukuqala kwemoto futhi kuyenze ingasebenzi phakathi nesikhathi sokuqala;bheka "Imanuwali Yedizayini Yokusabalalisa Amandla Wezimboni kanye Nomphakathi" ukuze uthole izibalo zedizayini;

I-7) Ukukhethwa kwama-breaker circuit kufanele futhi kucabangele ukuhlanganiswa okukhethiwe kwama-circuit breaker kanye nama-circuit breaker, ama-circuit breaker nama-fuses.

4.Kungani u-Yueqing AIso?

4.1: Ubunjiniyela obugcwele nokusekelwa kobuchwepheshe: abakhiqizi abangochwepheshe abangu-3, ​​nethimba lesevisi yezobuchwepheshe.

4.2: Ikhwalithi ingu-No1, isiko lethu.

4.3: Izikhathi zokuhola ngokushesha:“Isikhathi siyigolide” kuwe nakithi

4.4: 30min impendulo esheshayo: sineqembu lochwepheshe, 7 * 20H

Thola ukwethenjwa kweklayenti ngenxa yedumela labo elifakazelwe lokuthembeka, ukusebenza nempilo ende.

Uma unombuzosnoma yiziphi izidingo zomkhiqizo, sicela ukhululeke ukuxhumana nami.