Sikulethela amandla ukusula emhlabeni

Indlela Ukukhethwa Miniature Circuit Breaker

Circuit full ngezigaba

wesifunda amadlambi low-voltage

Low-voltage (esingaphansi 1,000 Vac) izinhlobo zivamile enkolweni isicelo yasekhaya, commercial nezezimboni, futhi zihlanganisa:

·  (MCB) Miniature wesifunda full esinesilinganiso zamanje hhayi ngaphezulu kuka-100 A. Trip izici evamile awantshintsheki. Ukusebenza Thermal noma ezishisayo-magnetic. Breakers kuboniswe ngenhla kukhona kulesi sigaba.

·  (MCCB) ebunjiwe Case Circuit Breaker esinesilinganiso wamanje kuze kufinyelele operation 2,500 A. Thermal noma ezishisayo-magnetic. Trip bamanje bangaba obushintshekayo ekulinganisweni emikhulu.

·  (ACB) okuphansi yamandla aphindeke kabili amandla wesifunda amadlambi) kungenziwa aboshelwe multi-imikhakha e low-voltage panelboard noma switchgears.

I-DIN ngeziteshi ukukhwezwa ezishisayo-magnetic miniature wesifunda full kuyinto isitayela ezivamile

MCB Standard izilinganiso zamanje


I-Miniature wesifunda amadlambi abe fixed uhambo kulungiselelwa; ekushintsheni ezisebenza Inani lamanje kudinga ekushintsheni lonke wesifunda full. Okukhulu wesifunda amadlambi ungaba izilungiselelo uhambo adjustable, okuvumela izakhi zifane ozofakwa kodwa ukulungiselelwa okuhloselwe ukuthuthukisa Ukuvikelwa. Ngokwesibonelo, full wesifunda nge 400 ampere "Usayizi Uhlaka" bangase babe overcurrent yayo ukuthola setha sokuqhuba amperes 300 kuphela, ukuvikela ikhebuli Element.

I-IEC 60898-1 futhi EN 60898-1, ukuchaza  ukalwe zamanje  Mina n  of a circuit breaker for low voltage distribution applications as the maximum current that the breaker is designed to carry continuously (at an ambient air temperature of 30 °C). The commonly available preferred values for the rated current are1A,2A,4A, 6 A, 10 A, 13 A, 16 A, 20 A, 25 A, 32 A, 40 A, 50 A, 63 A, 80 A, 100 A, and 125 A  The circuit breaker is labeled with the rated current in amperes, but excluding the unit symbol, A. Instead, the ampere figure is preceded by a letter, BC, or D, which indicates the instantaneous tripping current — that is, the minimum value of current that causes the circuit breaker to trip without intentional time delay

Uhlobo

Leso ezithothene zamanje

B

Ngenhla 3  Mina n

C

Ngenhla 5  Mina n  kufika manje kufaka 10  Mina n

D

Ngenhla 10  Mina n  kufika manje kufaka 20  Mina n

4214

MCB Breaking Umthamo (AIC)

Circuit amadlambi ezilinganiselwe kokubili wamanje evamile ukuthi kulindeleke ukuba ngiyenze, futhi esiphezulu isekhethi zamanje bakwazi ukuphazamisa ngokuphepha. Lesi sibalo mbuzo wesibili  ampere kokuphazamisa umthamo  ( AIC ) we full.

Ejwayelekile iphaneli yasekhaya wesifunda amadlambi ezilinganiselwe uphazamise  10  KA  ( 10000 A ) isekhethi amanje nawesikhathi 6KA (60000A)

isakhiwo MCB Yangaphakathi

 4444

1.  Actuator isigwedlo - esetshenziswa ngesandla akhubeke kabusha full wesifunda. Futhi kubonisa isimo full wesifunda (Vuliwe noma Valiwe / Wakhutshwa).

2.  Actuator indlela - iphoqa oxhumana ndawonye noma ngaphandle.

3.  Oxhumana - ukuvumela zamanje uma uthinta baphule wamanje lapho ethintwe ngaphandle.

4.  Terminals

5.  strip Bimetallic - ehlukanisa oxhumana ekuphenduleni ezincane, ngemva kwesikhathi eside overcurrents

6.  Samandla isikulufa - ivumela ukuthi umenzi ngokunembile ulungise uhambo kwamanje kwedivayisi emva inhlangano.

7.  Solenoid - ehlukanisa oxhumana ngokushesha ephendula overcurrents okusezingeni eliphezulu

8.  Arc ehlukanisayo / isicisha-mlilo

9. 

inombolo MCB Pole futhi isicelo

I-Miniature wesifunda amadlambi 1P, 1P + N, 2P, 3P, 3P + N, 4P!

1P, 2P, 3P, 4P izinombolo pole, okubonisa ukuthi imigqa eziningana kungenziwa ihlukene. Manje + N, yonke imigqa N abaphukile, kodwa akukho idivayisi uhambo phezu N umugqa. Kuphela uma siphukile emgqeni isigaba, emgqeni N anqunywe. Ngokwesibonelo, i-4P 16a wesifunda full, uma wamanje N-line mkhulu kunezinhliziyo 16a, noma enkulu kuno-20a, e-mbono, full wesifunda ngeke akhubeke. Kodwa 3P + N wesifunda full, N umugqa 160A wamanje, ngeke sifinyelele. Kwesisekelo wukuthi wamanje isigaba ingeqi ukubaluleka esinesilinganiso.

1P, 2P imishini owodwa esigabeni, ukukhanyisa angasebenzisa 1P, nezisekelo ukuba 2P; 3P esetshenziswa imishini ezintathu okhombisa, futhi kukhona ezintathu okhombisa yasendlini kagesi.

Ukuze miniature wesifunda amadlambi, 1P + N, 1P, futhi 2P ngokuvamile lisetshenziswa njengedivaysi ku-off isilawuli owodwa esigabeni zikagesi, kodwa imiphumela zihlukile.

1P-- olulodwa-pole wesifunda full nge ezishisayo kazibuthe ezithothene umsebenzi, ukulawula umugqa umlilo (isigaba umugqa), ebanzi Modular kuyinto 18mm kuphela;

1P + N - 1Pole + N wesifunda full, olawula imigqa bukhoma futhi singathathi hlangothi ngesikhathi esifanayo, kodwa kuphela 1P umlilo wire inomsebenzi we ezishisayo ezithothene kazibuthe; the wemfihlo futhi 18mm;

2P-- Single-isigaba 2-pole wesifunda full, olawula kokubili imigqa bukhoma futhi engathathi hlangothi, futhi bobabili babe ezishisayo kazibuthe ezithothene umsebenzi, kanye wemfihlo kuyinto 2 * 18mm = 36mm.

Ngakho-ke, kungaba iziphetho ezilandelayo bafinyelela kuso:

1. Ukuze kuncishiswe izindleko, 1P ingasetshenziswa, kodwa elingenhla wesifunda full Kumele ube umsebenzi ukuvuza uhambo. Ukuze kugwemeke izingozi zibangelwa umlilo futhi zero disorder ngesikhathi yesondlo, elingenhla ugesi kumelwe unqunywe;

2. Ukuze ukugwema inkinga eyodwa ngesikhathi yesondlo, 1P + N (ie DPN) ingasetshenziswa;

3, isizathu usebenzisa 2P: Ngoba kunjalo wesifunda full okuyilona elisebenzayo futhi wemfihlo 18mm, kukhona umehluko phakathi yangaphakathi 1P kanye 1P + N. Lo mqeqeshi owake wapheka "umkhawulo breaking umthamo" esimweni ingozi le isekhethi nakanjani ephezulu kunalokho. Phela, isikhala kuyisici esibalulekile ezithinta ikhono aphule. Ngakho-ke, ngamandla izifunda izinto ezibaluleke kakhulu, njalo kwalungisa futhi eziqhutshwa futhi athambekele ukwehluleka, kungcono ukusebenzisa 2P (izindleko ngaphezulu).


Post time: Aug-13-2018

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