Kungani ufake i-SCB (Surge Circuit Breaker) ngaphambili kwe-SPD (Idivayisi Yokuvikela)

Yini i-SCB?

I-SCB - Surge breaker breaker noma SPD backup protector

Kungani i-SCB?

I-SCB ixazulule ngempumelelo inkinga yomhlaba wonke yokuhambela okokuvikela ukwehluleka kokuvikela idivayisi.

Ukusetshenziswa Komkhiqizo

1. Ukunqanyulwa okukhethiwe kwamandla wephaseli wamandla adlulisiwe nombane wamanje kungavikela ngempumelelo i-SPD ekujikelezeni okufishane nasekujikelezeni okufushane kwe-SPD ngenxa yamandla kagesi angaphezu kwesikhashana, okuholela ezingozini ezinkulu zomlilo.

2. Ukwahlukaniswa okukhethiwe kwamandla wamanje wamandla adlulile nombani wamanje kungavikela ngempumelelo i-SPD ekwenzeni i-voltage yokuqala ye-SPD yehle ngaphansi kwamandla kagesi, namandla okuvuza kwemvamisa yamandla enyuka njengamanje, okudala ingozi yomlilo enkulu.

3. Lapho i-SPD inombane wamanje, isixhumi sangaphandle ngeke sikhubeke ngengozi, ukuze ukuvikelwa kombani kwemishini kagesi kuhlale kusesimweni esisebenzayo.

Ububanzi besicelo

Umvikeli wesipele ozinikele we-SCB unikela ngokuvikelwa okuyisipele kwe-SPD (Idivayisi Yokuvikela Umbani) evikela ukunikezwa kwamandla kwezinga lokuqala, lesibili nelesithathu. Isebenza ezindaweni lapho kufakwe khona imishini yokuvikela umbani we-SPD, njengemishini yamandla yokwakhiwa kwezimboni nezombusazwe, ugesi, ezokuxhumana, ezokuhamba emgwaqeni, i-petrochemical nezinye izimboni.

Isimiso sokusebenza

I-SCB, isinqamuli sangaphandle esikhethekile se-SPD, siwuhlobo lwezinto zokusebenza ezakhiwa ngokuya nge-athikili 430.3 ku-IEC61643-4-43: ukwamukela amadivayisi wokuvikela angaphezulu kwamanje ngaphambi kwezingozi ezibangelwa yisifunda. Ikakhulu ixazulula izinkinga okuthi uma kulandela imisinga noma imisinga yokuvuza yenzeke ku-SPD, i-SCB ingakhubeka ngokushesha, ngenkathi imibani yombani idlula, i-SCB ayikhubeki, i-SCB iqinisekisa ukuthi i-SPD ayibangeli umlilo nokuvikelwa kokukhanyisa kwemishini kuhlala isikhathi eside, ukuxazulula izinkinga zokuthi kukhona ukuvikeleka okuyimpumputhe kuma-fuse kanye nama-breakers asetshenziswa kakhulu njengamanje asetshenziswa njengezinqamuli zangaphandle. I-SCB ngamadivayisi afanelekile wokufanisa wohlobo lokushintsha kwamandla kagesi we-SPD, uhlobo lokukhawulela amandla we-SPD olusebenzisa uhlelo lokuphakelwa kwamandla kagesi ophansi.

Emhlabeni wonke babamba iqhaza ekuxazululeni le nkinga:

Lapho ukuthungela kwe-SPD kwenzeka, ama-breaker wangaphandle awanqamuki, Futhi lapho ukuqhuma kugeleza nge-SPD, ama-breaker angaphandle anqamula ngephutha.

IJalimane lenze ukuhlolwa komthelela wamanje wombani kuma-fuse and breakers ngo-1997. Indawo eluhlaza isho ukuxhumana, indawo e-orenji isho ukungaqiniseki, kanti indawo ebomvu isho ukunqanyulwa.

I-IEC yabhala futhi yabuyekeza izinga le-SPD. Ikomidi elincane i-37A lisungule iTask Force 12 emhlanganweni wase-Austria-Vienna. ukuxazulula inkinga efanayo phakathi kwama-breakers ne-SPD.

Amazwe amaningi azungeze leli gama asungule lolu cwaningo inkinga yokonakala kwama-MOVs (metal oxide varistors) SPD.

1. Lapho ukuwohloka kwe-SPD kwenzeka, ukuboniswa kwamapharamitha kagesi ukuthi u-U_c inani liyancipha.
2. Lapho u-U_c inani linciphisa amandla wamandla, ukuvuza kwamanje kuzokhuphuka kakhulu.
3. Lapho amandla avela ngokungaphezulu kwamandla we-voltage angajwayelekile, kuzodala ukuthi i-SPD iqale.
4. Lapho i-current evamile engaphezu kwe-5A igeleza nge-SPD, ijubane lokuthungela liyashesha kunokudlulisa ukushisa.

Lapho okwamanje okungaphezu kwe-5A kudlula nge-SPD, kungahle kubambe umlilo ngokushesha, ngakho-ke i-SPD idinga isivikeli sokushintsha esikhipha ngokushesha lapho okwedlula okungu-5A kudlula khona ukugwema umlilo!

Ifuna ukuthi lapho umbani ugeleza unqamule phakathi, ungakhubeki, okugcina ukusebenza kahle komsebenzi.

Lapho ukuwohloka kwe-SPD kwenzeka noma ngaphambi kokuvuza kwamanje okubangelwa amandla angajwayelekile kufinyelela ku-5A, kungakhubeka ngokushesha.

Yini i-SCB engaxazulula inkinga

Ukungahambi kahle phakathi kwamadivayisi wokuvikela umbani ne-fuse noma i-breaker?

Indlela yendabuko ukuxhumanisa i-fuse noma i-breaker ochungechungeni phambi kwamadivayisi wokuvikela umbani, kuzoba nezici ezine zokungahambisani uma wenza njalo.

1. Lapho amadivayisi avikela umbani ehla noma kunevoltage enkulu eyenzeka kusifunda sokusabalalisa, amadivayisi avikela umbani azosakazwa kancane ukuze agxilwe futhi ama-Fuse noma ama-breaker awakwazi ukunqamula ngokushesha
2. Lapho umbani uvela, amafyuzi noma ama-breakers awakwazi ukuma amandla esikhashana wombani wamanje, ngoba abesetshenziswa njengezinto zokusabalalisa amandla ekwakhiweni kwasekuqaleni. Ngakho-ke kulula ukubenza bakhubeke noma baqhume, okwenza umbani ungavikeleki.
3.  Lapho umbani wamanje udabula ama-breaker, inani le-Up liphezulu kakhulu futhi amadivayisi okuvikela umbani awakwazi ukuvikela imishini kahle.
4.  Amafiyuzi noma ama-breaker awakwazi ukunqamula emugqeni ofakiwe wamandla we-transformer. Lapho kwenzeka isifunda esifushane, abakwazi ukuphuka ngokushesha.

I-SCB ingaxazulula izinkinga ezine ngasikhathi sinye

I-SCB, exhunywe ochungechungeni phambi kwe-SPD ingaxazulula izinkinga ezine ngasikhathi sinye.

1. Lapho amadivayisi avikela umbani ehla noma kunevoltage enkulu eyenzeka kusifunda sokusabalalisa, i-SCB inganqamula ngokushesha ukugwema amadivayisi avikela umbani ekuqhumeni. I-current break ingaphansi kuka-3 A.
2. Lapho umbani uhamba, i-SCB exhunywe ochungechungeni phambi kwe-SPD ayikwazi ukugcina ukukhubeka futhi akukho monakalo ngaphansi kombani wamanje we-100kA, igcina i-SPD isebenza kahle.
3. Lapho umbani uhamba nge-SCB, i-U_p inani liphansi kakhulu, lilingane nethusi ngobude obufanayo.
4. Umthamo wephula we-SCB udlula ama-plastic breakers, aze afike ku-100kA.

Kukhona umehluko omkhulu ngesikhathi nobubanzi phakathi kwamandla wamandla wamanje nokukhuphuka. I-SCB isebenzisa kahle le mingcele emibili ukulawula ama-electromagnets, ukufeza umsebenzi wokukhubeka.

1. Lapho kushintshana okwamanje kugeleza, i-electromagnet ingakhubeka ngokukhetha ukunquma ukushintshana kwamanje.
2. Ngoba ijubane lokukhuphuka lishesha kakhulu, ukukhuphuka kuyaphela ngaphambi kokuthi i-electromagnet ithathe isenzo. Ngakho-ke i-electromagnet isesimweni esizinzile futhi i-SCB ayikhubeki.

Amandla we-voltage asalayo ama-SCB, ama-MCB namaFuses angaphansi kwethonya lamanje

Izicelo ezijwayelekile

Ukuxhuma kwe-SCB nomdwebo wesifunda wesifunda oyisisekelo