Isidingo sokufakwa kwekhophi yasenqolobaneni yedivayisi yokuvikela ukuhlinza

Ngokomgomo wokusebenza weidivayisi yokuvikela ukukhuphukakanye nezici zezingxenye ngokwazo, i-chip yangaphakathi yokuvikela umbani yomvikeli wokuhlinzwa izothinteka izikhathi eziningi zombani wamanje, ukusebenza ngokweqile, izinga lokushisa eliphezulu kanye nomswakama ophezulu ngaphansi kokusebenza okujwayelekile, kubangela ukuguga kwe-chip yokuvikela umbani, ukuwohloka.

Ngokuvamile, ukuvuza kwamanje kohlobo lomkhawulo wamanje (i-varistor)amadivaysi okuvikela ukukhuphukaingaphansi kuka-40 ΜA, futhi ukuvuza kwamanje kokuqala kwabanye abavikeli bokuhlinzwa kwenxanxathela yezitolo kungaphansi kuka-5 ΜA, kodwa ukuvuza kwamanje kuqala ukwanda kancane kancane ngemva kokukhishwa kwamanje okulinganiselwe, ngokwanda kwezikhathi zokukhishwa, ukuvuza kwamanje kuyanda ngokuqhubekayo.Lapho ukuvuza kwamanje kukhuphuka kunani elithile (ngokuvamile, i-valve eyodwa akufanele idlule i-1 Ma), idivayisi yokuvikela ukukhuphuka iqala ukushisa, futhi ijubane lokuwohloka liba ngokushesha, okulula ukubangela umlilo.Ukwengeza, lapho ukuhlinza okunamandla amakhulu noma iphutha lefrikhwensi yomugqa, ukwehluleka kwesivikeli se-surge-circuit, uma kungekho ukuvikeleka komugqa, akukwazi ukunqamula ulayini onesici ngesikhathi, kuzoholela futhi emlilweni wokusabalalisa, futhi isivikeli sokuhlinzwa siyaqhuma.

Ukufingqa, ukuvimba ukuvuza kwamanje kwe-chip yangaphakathi yedivayisi yokuvikela ukukhuphuka komugqa kanye nomjikelezo omfishane wefrikhwensi Yamandla Womugqa yizizathu eziyinhloko zokusetha ukuvikela okusekelayo koMvikeli Wokuhlinza.

Ukukhethwa kokuvikela okuyisipele kweSkhuthazaPukujikelezaDevice

1 ukuvikelwa kwangaphakathi kwedivayisi yokuvikela ukukhuphuka

Ukuvuza kwamanje kumvikeli wokuhlinza kuyisihluthulelo sokuvikela kwangaphakathi kwe-idivayisi yokuvikela ukukhuphuka.

Eminye yemikhiqizo yemakethe ukuvuza kokuqala kwamanje kuncane kakhulu, kodwa kuzoba nokwanda okukhulu ngemva kokusetshenziswa, izinga lokushintsha liphezulu kakhulu.Ngokuphambene, ukuvuza kwamanje kwamanye amadivaysi okuvikela ukuhlinza kukhulu kakhulu (5 ~ 30μa) , kodwa ukukhuphuka kwamandla okuvuza kuncane kakhulu ngemva kokukhishwa kwamanje okulinganiselwe ngokuphindaphindiwe, okuyinqubomgomo ebaluleke kakhulu.Uma izinga lokushintsha lokuvuza liphezulu, kunciphisa ukuphepha, ukwethembeka nempilo yesevisi yedivayisi yokuvikela ukukhuphuka.Lapho liphansi izinga loshintsho lokuvuza kwamanje, kulapho ukuphepha, ukwethembeka kanye nempilo yesevisi yedivayisi yokuvikela ukukhuphuka kuya phezulu.Lapho ukuvuza kwamanje ngaphakathi kwesivikelo sokuhlinza kukhuphuka, izinga lokushisa langaphakathi lesivikeli sokuhlinzwa likhuphuka lifike emkhawulweni, futhi idivayisi yangaphakathi ikhishwa ngokufakwa kwezinga lokushisa eliphansi noma i-shrapnel yensimbi yomshini, ukunqanyulwa okuzwelayo ekunikezeni amandla ukuze kuqinisekiswe ukuphepha kwesivikeli sokuhlinzwa.Ngakho-ke, akufanele sibheke ukuvuza okuncane kwamanje, kodwa kufanele sinake kakhulu izinga lokushintsha lokuvuza kwamanje ngesikhathi sokusebenza kwedivayisi yokuvikela ukuhlinzwa, ngokuvamile kufanele libe ngaphansi kuka-200%.

2 ukuvikelwa kwangaphandle kwedivayisi yokuvikela ukukhuphuka

Uma kukhona ukukhuphuka kwamandla okugcwala ngokweqile noma iphutha lefrikhwensi yamandla kalayini (i-Tov), indawo yokukhubeka ayinakuqinisekiswa ukuthi iyindawo ephakeme kakhulu yokuncibilika ngenxa yokuba khona kokugeleza kwamanzi noma ingcindezi enkulu edalwe ukwanda kwegesi, I-Surge Protector imfushane phansi, futhi i-current short-circuit current ibangela ukuthi isivikeli sokuhlinza sishise futhi sibambe umlilo.Ngakho-ke, uma okokuvikela okusekelayo kufakwa ngaphambi kwesisetshenziswa sokuvikela ukukhuphuka, okokuvikela okuyisipele kuyanqamuka futhi ulayini uyavikelwa uma kwenzeka ukwehluleka kwesekethe emfishane yesivikeli sokuhlinza.

(1) ukubekezelela ukuphakama kwamandla

Lapho i-Surge Protector isebenza, i-surge current ayigelezi kuphela kumvikeli ohlinzayo, kodwa futhi igeleza kuzo zonke ezinye izinto zokusebenza kulayini, kuhlanganise nemishini yokuvikela i-Surge Protector yokuvikela isipele.Ukuze uvimbele okokuvikela okokuvikela ekusetshenzisweni kabi lapho amandla amanje ajwayelekile okuhlinzwa aphelelwa yisikhathi, ukuvikelwa kombani kwempahla yokuvikela yokuhlinza kufanele kukhethwe ngokunengqondo.Kuleli phepha, i-fuse ithathwa njengesibonelo sokuhlaziya (imiphumela ibonisa ukuthi isilinganiso esifanayo samanje se-circuit breaker singcono kunokusebenza kwe-fuse surge ukumelana) .

(2) ukuvikelwa kwesiyingi esifushane sefrikhwensi yamandla ngaphezulu kwamanje

Uma ukubekezelelwa kwe-short-circuit noma ukusebenza kwe-short-circuit breaking yesivikeli sokuhlinza ngokwaso kukhulu kune-short-circuit current elindelekile kudivayisi, isivikeli sokuhlinza sibhekwa sinomsebenzi wokuvikela, futhi isivikelo sokusekela sangaphandle asikwazi ukufakwa. ngalesi sikhathi;Kodwa umvikeli ojwayelekile wokuhlinza ngokuvamile akakwazi ukuhlangabezana nesistimu yamanje yokuhlinzeka okulindelekile yamanje yesiyingi esifushane.Ngakho-ke, lapho ukwehluleka kwesekethe emfishane yesivikeli sokuhlinza kungakwazi ukunqamula umsinga wesekethe emfishane, isivikeli sokuhlinza kufanele sisethe isivikeli esisekelayo futhi sikwazi ukuphula amandla ahambisanayo ahambisanayo esekethe emfishane.

(3) ukuxhumanisa ukuvikela ngokushintsha okuphezulu

Isivikelo sokwenza ikhophi yasenqolobaneni kufanele sikhethwe ngokukhishwa kokulibaziseka kwesikhathi ngejika lokukhishwa elingu-C, futhi isilinganiso saso samanje esilinganiselwe sikhethwa ngokuya ngenani eliphezulu lamanje lesivikeli sokuhlinzwa i-IMAX.Noma khetha i-fuse, kufanele kube i-fuse enomkhawulo ongaphezulu wokubambisana okukhethiwe (isilinganiso sokubambisana se-1/1.6) .Uma inani elilinganiselwe lesivikeli esingaphezulu kwe-overcurrent lingaphansi kwenani lokusetha lesivikeli esidlulele kumjikelezo oholayo we-Surge Protector, ukuvikela okuyisipele kwesivikeli sokuhlinza akusebenzi, futhi inani eliphansi lokusetha lingashiywa noma likhethwe.

3 Ukuqhathaniswa kwezinhlobo ezahlukene zemishini yokuvikela eyisipele

Abakhiqizi bamanje bokuvikela ukukhuphuka kwemakethe bakhetha izinhlobo eziningi zezingxenye zedivayisi yokuvikela, eziyinkimbinkimbi.Izinhlobo ezijwayelekile zemishini yokuvikela isipele esikhethekile somvikeli (SCB), amafuse ahlanganisiwe (Fu) , MCCB, micro-break (MCB) nokunye.Indlela yokukhetha uhlobo kanye nemingcele eyinhloko yomvikeli oyisipele ayizange ichazwe ngokucacile futhi idatha enembile, futhi ngisho nabasebenzi bezobuchwepheshe bomkhiqizo abahlukene banemibono eminingi engahambisani nenkulumo-ze, kubaklami ukudideka okuningi.