Ukuqonda Izici Zokuphuka Kwekhono kanye Nokuhamba kwe-MCCB engu-250 Amp

1. Isingeniso: Kungani Ukwephula Amandla Nezimpawu Zokuhamba Kubalulekile

Ezinhlelweni zanamuhla zokusatshalaliswa kwamandla aphansi, ukuvikelwa kwesekethe kubalulekile kokubili ekuphepheni nasekuqhubekeni kokusebenza. Ama-Molded Case Circuit Breakers (ama-MCCB) asetshenziswa kabanzi ukuvikela izintambo, imishini, kanye nemithwalo ekuthwaleni ngokweqile kanye nasezifundeni ezimfushane.
Phakathi kwezilinganiso ezivamile,I-MCCB engu-250 Amp ivame ukusetshenziswa ezakhiweni zezentengiselwano kanye nasezikhungweni zezimboni ezincane, lapho ukuqonda amandla okuphuka kanye nokuziphatha kokuwa kubalulekile ekwakhiweni kwesistimu efanele.

2. Kusho ukuthini Ukuphuka Kwekhono Nokuthi Kungani Kubalulekile Ekuvikelweni Kwesekethe

Umthamo wokuphuka ubhekisela kumthamo omkhulu wephutha ongaphazanyiswa ngokuphephile yi-circuit breaker ngaphandle komonakalo. Ngokuvamile uchazwa ngamapharamitha amabili abalulekile: umthamo wokugcina wokuphuka (i-Icu) kanye nomthamo wokuphuka kwesevisi (i-Ics).
Ukukhetha i-breaker enamandla okwanele okuphula kuqinisekisa ukuthi, ngesikhathi sesehlakalo se-short-circuit, idivayisi ingaphazamisa ugesi wephutha ngaphandle kokubangela ukwehluleka okukhulu noma izingozi zesibili. Lokhu kubaluleke kakhulu ezinhlelweni ezine-short-circuit currents ephezulu engaba khona.

3. Ukusebenza Kwesiyingi Esifushane kanye Nokuphazamiseka Kwamanje Kwephutha

Uma kwenzeka i-short circuit, ama-current aphezulu kakhulu ageleza ohlelweni ngesikhathi esifushane kakhulu. Ama-MCCB aklanyelwe ukuvula oxhumana nabo ngokushesha ngenkathi elawula amandla okushisa kanye ne-electromagnetic akhiqizwa ngesikhathi sokuphazamiseka kwephutha.
Ukusebenza kahle kwale nqubo kuthinta ngqo ukuphepha kwesistimu, kunciphisa umonakalo emishinini engezansi komfula kanye nokunciphisa ingozi yamaphutha e-arc. Ukuhlolwa okufanele kokusebenza kwe-short-circuit kusiza onjiniyela ukuqinisekisa ukuhlanzwa kwamaphutha okuthembekile.

4. Izinhlobo Zeyunithi Yohambo kanye Nezilungiselelo Zokuvikela Ezilungisekayo

Ama-MCCB avame ukuhlonyiswa ngamayunithi okuhamba ngogesi noma ngogesi. Amayunithi okuhamba ngogesi ahlinzeka ngokugcwala ngokweqile okuthembekile kanye nokuvikelwa kwe-short-circuit okusheshayo, kuyilapho amayunithi okuhamba ngogesi enikeza ukunemba okukhulu kanye nokulungiswa.
Izilungiselelo ezilungisekayo zivumela amapharamitha okuvikela ukuthi alungiselelwe izimo zangempela zomthwalo, athuthukise ukuhambisana futhi anciphise ukukhubeka kwezinkinga. Kuzinhlelo zokusebenza kusetshenziswa i-I-MCCB engu-250 Amp, lokhu kuguquguquka kusekela kokubili ukuthembeka kokuvikela kanye nokusebenza kahle.

5. Ukuxhumanisa Izici Zohambo Nezidingo Zomthwalo Wesistimu

Izici zokuhamba kumele zivumelane nephrofayili yomthwalo kagesi ukuqinisekisa ukuvikelwa okusebenzayo. Ukuhlanganiswa okufanele kuvimbela ukuphazamiseka okungadingekile ngenkathi kugcinwa ukukhetha phakathi kwamadivayisi angenhla naphansi.
Izinhlelo zokuvikela ezihlelwe kahle zithuthukisa ukuzinza kohlelo futhi zisize ekugcineni ukuqhubeka kwenkonzo, ikakhulukazi ezindaweni lapho isikhathi sokuphumula siyimfuneko ebalulekile.

6. Izindinganiso, Ukuhlolwa, kanye Nokucatshangelwa Kokuhambisana Nokuphepha

Izindinganiso zomhlaba wonke ezifana ne-IEC 60947-2 kanye ne-UL 489 zichaza izidingo zokusebenza, ukuhlolwa, kanye nokuphepha kwama-MCCB. Ukuhambisana nalezi zindinganiso kuqinisekisa ukuthi amadivayisi asebenza njengoba kulindelekile ngaphansi kwezimo zamaphutha.
Ukusebenzisa imikhiqizo eqinisekisiwe kanye nokulandela imikhuba efanele yokufaka kanye nokufaka imishini kuthuthukisa ukuthembeka kwesikhathi eside.I-MCCB engu-250 Ampakugcini nje ngokuhlangabezana nezidingo zomthetho kodwa futhi kusekela ukusatshalaliswa kwamandla okuphephile nokuthembekile.

7. Isiphetho: Ukwenza Ukukhetha Okufanele Kokuvikela Isekethe Ethembekile

Ukwephulwa komthamo kanye nezici zokuwa kuyizinto ezibalulekile ekukhetheni i-MCCB. Ukuqonda lezi zinhlaka kuvumela onjiniyela nabaphathi bezikhungo ukuthi baklame izinhlelo zikagesi eziphephile nezinokwethenjelwa.
Ngokuqhathanisa ngokucophelela izici zokuvikela nezidingo zesistimu, izinhlangano zinganciphisa ubungozi, zinciphise isikhathi sokungasebenzi, futhi ziqinisekise ukuzinza kokusebenza kwesikhathi eside.

Imibuzo Evame Ukubuzwa

Umbuzo 1: Uyini umehluko phakathi kwe-Icu ne-Ics?
I-Icu iwumkhawulo ophezulu wephutha ongaphazanyiswa yi-breaker, kuyilapho i-Ics imelela umkhawulo wephutha ongaphazanyiswa futhi isakwazi ukulungiswa ngemva kwalokho.

Umbuzo 2: Ingabe amayunithi ohambo lwe-elekthronikhi angcono kunelawo anomoya oshisayo?
Amayunithi ohambo lwe-elekthronikhi anikeza ukunemba okuphezulu kanye nezilungiselelo ezilungisekayo, kodwa amayunithi asebenza ngogesi ahlala ethembekile futhi engabizi kakhulu ezinhlelweni eziningi.

UMBUZO 3: Izici zohambo zithinta kanjani ukuhlanganiswa kwesistimu?
Ama-trip curve akhethwe kahle aqinisekisa ukukhubeka okukhethiwe, okuvumela kuphela isekethe enephutha ukuthi ihlukaniswe ngaphandle kokuthinta lonke uhlelo.

Umbuzo 4: Kungani ukuphuka kwamandla kubaluleke kangaka ekukhetheni i-MCCB?
Ukuntuleka komthamo wokuphuka kungaholela ekwehlulekeni kwe-breaker ngesikhathi se-short circuit, okubangela izingozi ezinkulu zokuphepha kanye nemishini.

Izinkomba

• I-IEC 60947-2: Iswishi esishintshayo kanye negiya lokulawula elinogesi ophansi - Ama-circuit breakers

• I-UL 489: Ama-Molded-Case Circuit Breakers, Ama-Molded-Case Switches, kanye nama-Circuit-Breaker Enclosures

• I-IEEE Std 242 (Incwadi Ehlanganisiwe): Ukuvikelwa Nokuhlanganiswa Kwezinhlelo Zamandla Ezimboni Nezentengiselwano