Septhemba 13, 2021, Hlaziya umgomo wokusebenza weama-breaker circuit-box
Ama-Circuit breaker ngokuvamile akhiwa isistimu yokuxhumana, isistimu yokucisha i-arc, indlela yokusebenza, iyunithi yohambo, igobolondo nokunye.
Uma isifunda esifushane senzeka, inkambu kazibuthe ekhiqizwa amandla amakhulu (ngokuvamile izikhathi ezingu-10 kuya kwezingu-12) inqoba intwasahlobo yamandla okusabela, iyunithi yohambo idonsa indlela yokusebenza, futhi iswishi iyahamba ngaso leso sikhathi.Uma ilayishwe ngokweqile, i-current iba nkulu, isizukulwane sokushisa siyakhula, futhi i-bimetal deforms ngezinga elithile ukuze iphushe umshini wokunyakaza (omkhulu okwamanje, isikhathi sesenzo sifushane).
Kukhona uhlobo lwe-elekthronikhi olusebenzisa i-transformer ukuqoqa okwamanje kwesigaba ngasinye futhi iqhathanise nevelu ebekiwe.Uma okwamanje kungajwayelekile, i-microprocessor ithumela isignali ukwenza iyunithi yohambo lwe-elekthronikhi ishayele indlela yokusebenza.
Umsebenzi we-circuit breaker ukusika nokuxhuma isifunda somthwalo, kanye nokusika isifunda sephutha, ukuvimbela ukwanda kwengozi nokuqinisekisa ukusebenza okuphephile.I-high-voltage circuit breaker idinga ukuphula i-arc engu-1500V, engu-1500-2000A yamanje, lawa ma-arcs angakwazi ukwelulelwa ku-2m futhi aqhubeke evutha ngaphandle kokucisha.Ngakho-ke, ukucisha i-arc kuyinkinga okufanele ixazululwe ngama-high-voltage circuit breakers.
Umgomo wokufutha kwe-arc kanye nokucisha i-arc ngokuyinhloko ukupholisa i-arc ukwenza buthaka ukuhlukaniswa okushisayo.Ngakolunye uhlangothi, i-arc inwetshwa yi-arc ukuqinisa ukuhlanganisa kabusha nokusabalalisa izinhlayiya ezikhokhisiwe, futhi ngesikhathi esifanayo, izinhlayiya ezikhokhiswayo ku-arc gap zishaywa ukuze zibuyisele ngokushesha amandla e-dielectric we-medium.
Ama-circuit breaker ane-low-voltage abizwa nangokuthi ama-automatic air switches, angasetshenziswa ukuxhuma futhi aphule ama-circuits okulayisha, futhi angasetshenziswa ukulawula ama-motor aqala njalo.Umsebenzi wayo ulingana nesamba seminye noma yonke imisebenzi yokushintsha kwemimese, ukudluliselwa okudlulele, ukulahleka kukagesi, ukudluliselwa okushisayo nezivikeli ezivuzayo.Kuwuhlelo lukagesi olubalulekile oluvikelayo kumanethiwekhi okusabalalisa ama-voltage aphansi.
Ama-circuit breaker ane-low-voltage enemisebenzi ehlukahlukene yokuvikela (ukulayisha ngokweqile, isifunda esifushane, ukuvikelwa kwe-undervoltage, njll.), inani lesenzo esilungisekayo, umthamo wokuphuka okuphezulu, ukusebenza okulula, ukuphepha, njll., ngakho-ke asetshenziswa kabanzi.Isakhiwo kanye nesimiso sokusebenza I-low-voltage circuit breaker yakhiwe indlela yokusebenza, abathintwayo, izinto zokuvikela (ukukhishwa okuhlukahlukene), isistimu yokucisha i-arc, njll.
Ukuthintwa okuyinhloko kwe-low-voltage circuit breaker kuqhutshwa ngesandla noma kuvalwe ngogesi.Ngemva kokuba othintana naye oyinhloko evaliwe, indlela yohambo lwamahhala ikhiya othintana naye oyinhloko endaweni yokuvala.Ikhoyili yokukhululwa kwe-overcurrent kanye ne-thermal element yokukhululwa kwe-thermal ixhunywe kuchungechunge nesekhethi eyinhloko, futhi ikhoyili yokukhululwa kwe-undervoltage ixhunywe ngokuhambisana nokunikezwa kwamandla.Uma isekethe ine-circuited emfushane noma ilayishwe kakhulu, i-armature yokukhululwa kwe-overcurrent iyadonsa, ibangele indlela yamahhala yokukhubeka ukuthi isebenze, futhi othintana naye oyinhloko unqamula isifunda esikhulu.Lapho isifunda sigcwele kakhulu, into yokushisa yeyunithi yohambo olushisayo izogoba i-bimetal futhi isunduze indlela yohambo lwamahhala ukuze ihambe.Uma isekethe ingaphansi kwe-voltage, i-armature ye-under-voltage release iyakhululwa.Indlela yohambo lwamahhala nayo iyasebenza.Ukukhishwa kwe-shunt kusetshenziselwa isilawuli kude.Ngesikhathi sokusebenza okuvamile, ikhoyili yayo iyanqunywa.Uma kudingeka ibanga lokulawula, cindezela inkinobho yokuqala ukuze ikhoyili isebenze.
Isikhathi sokuthumela: Sep-13-2021
