umephuli:
I-circuit breaker isho isisetshenziswa esishintshayo esingaqhuba, sithwale futhi siphule amandla aso ngaphansi kwezimo ezijwayelekile zesekhethi, futhi siphathe, sithwale futhi siphule amandla aso ngaphansi kwezimo zesekhethi ezingavamile phakathi nenkathi ethile yesikhathi.Ama-circuit breaker ahlukaniswe abe ama-high-voltage circuit breaker nama-low-voltage circuit breaker ngokobubanzi bokusebenza, futhi imingcele phakathi kwe-voltage ephezulu nephansi ayicacile.Ngokuvamile ngaphezu kwe-3kV kubizwa ngokuthi izinto zikagesi ezinamandla amakhulu.
Ama-Circuit breaker angasetshenziswa ukusabalalisa amandla kagesi, ukuqala ama-asynchronous motors njalo, ukuvikela izintambo zamandla kanye nama-motor, futhi anqume ngokuzenzakalelayo ama-circuits uma kwenzeka ukulayisha ngokweqile, i-short circuit, i-undervoltage namanye amaphutha.Umsebenzi wayo ulingana nenhlanganisela yeswishi ye-fuse kanye ne-overheat kanye ne-underheat relay.Ngaphezu kwalokho, ngokuvamile akudingekile ukushintsha izingxenye ngemva kokuphula iphutha lamanje.Isisetshenziswa kabanzi manje.
Ukusabalalisa amandla kuyisixhumanisi esibaluleke kakhulu ekukhiqizeni, ekudlulisweni nasekusetshenzisweni kukagesi.Uhlelo lokusabalalisa amandla luhlanganisa ama-transformer kanye nemishini kagesi ehlukahlukene ephezulu naphansi.I-low voltage circuit breaker yizinto zikagesi ezinenani elikhulu lokusetshenziswa kanye nezinhlelo eziningi ezahlukene.
umgomo wokusebenza:
I-circuit breaker ngokuvamile yakhiwa isistimu yokuxhumana, isistimu yokucisha i-arc, indlela yokusebenza, ukukhululwa, kanye ne-casing.
Esimeni sokujikeleza okufushane, inkambu kazibuthe ekhiqizwa amandla amakhulu (imvamisa izikhathi eziyi-10 kuye kweziyi-12) inqoba intwasahlobo yamandla okusabela, ukukhululwa kudonsa indlela yokusebenza ukuze isebenze, futhi iswishi ihambe ngokushesha.Uma kulayishwa ngokweqile, ukwanda kwamanje, isizukulwane sokushisa siyanda, futhi i-bimetal deforms ngezinga elithile ukuze kuthuthukiswe ukunyakaza komshini (okukhulu okwamanje, kufushane isikhathi sesenzo).
Ngohlobo lwe-elekthronikhi, i-transformer isetshenziselwa ukuqoqa ubukhulu besigaba ngasinye samanje futhi iqhathanise nenani elibekiwe.Uma okwamanje kungavamile, i-microprocessor ithumela isignali ukwenza ukukhishwa kwe-elekthronikhi kushayele indlela yokusebenza ukuze isebenze.
Umsebenzi we-circuit breaker ukusika nokuxhuma isifunda somthwalo, ukusika isifunda sephutha, ukuvimbela ingozi ekukhuleni, nokuqinisekisa ukusebenza okuphephile.I-high-voltage circuit breaker idinga ukuphula i-arc engu-1500V kanye neyamanje engu-1500-2000A.Lawa ma-arcs anganwetshwa abe ngu-2m futhi aqhubeke nokuvutha.Ngakho-ke, ukucisha i-arc kuyinkinga okufanele ixazulule ama-breaker circuit-voltage.
Umgomo wokucisha i-arc ngokuyinhloko ukupholisa i-arc ukwenza buthaka ukuhlukaniswa okushisayo.Ngakolunye uhlangothi, ukuvunguza kwe-arc kukhulisa i-arc, kuqinisa ukuhlangana kabusha nokusabalalisa izinhlayiya ezishajiwe, futhi ngesikhathi esifanayo kuphephula izinhlayiya ezikhokhisiwe esikhaleni se-arc, kubuyisela ngokushesha amandla e-dielectric.
I-voltage ephansi+, eyaziwa nangokuthi i-othomathikhi yokushintsha komoya, ingasetshenziswa ukuvula nokuvala amasekhethi okulayisha, futhi ingasetshenziswa ukulawula izinjini eziqala njalo.Umsebenzi wayo ulingana nesamba sengxenye noma yonke imisebenzi yeswishi yommese, i-overcurrent relay, i-voltage loss relay, i-thermal relay nesivikelo sokuvuza, futhi iyisisetshenziswa esibalulekile esivikelayo kunethiwekhi yokusabalalisa amandla kagesi aphansi.
Ama-circuit breaker ane-low-voltage anemisebenzi eminingi yokuvikela (ukulayisha ngokweqile, i-short-circuit, ukuvikelwa kwe-voltage engaphansi, njll.), inani lesenzo elilungisekayo, umthamo wokuphuka okuphezulu, ukusebenza okulula, ukuphepha nezinye izinzuzo, ngakho zisetshenziswa kabanzi.Isakhiwo kanye nesimiso sokusebenza I-low-voltage circuit breaker yakhiwe indlela yokusebenza, abathintwayo, izinto zokuvikela (ukukhishwa okuhlukahlukene), kanye nesistimu yokucisha i-arc.
Othintana nabo abakhulu be-voltage ye-circuit breaker basebenza ngesandla noma bavalwe ngogesi.Ngemva kokuba othintana nabo abakhulu sebavaliwe, indlela yohambo lwamahhala ikhiya abathintwayo abakhulu endaweni evaliwe.Ikhoyili yokukhululwa kwe-overcurrent kanye ne-thermal element yokukhululwa kwe-thermal ixhunywe kuchungechunge nesekhethi eyinhloko, futhi ikhoyili yokukhishwa kwe-undervoltage ixhunywe ngokuhambisana nokunikezwa kwamandla.Uma isifunda sifushane noma silayishwe kakhulu, i-armature yokukhululwa kwe-overcurrent idonselwa ngaphakathi, ukuze indlela yokukhulula yamahhala isebenze, futhi othintana naye oyinhloko unqamula isifunda esikhulu.Lapho isifunda sigcwele ngokweqile, ingxenye eshisayo yeyunithi yohambo olushisayo izoshisa, igobe i-bimetal, ngaleyo ndlela iphushe indlela yohambo lwamahhala ukuze isebenze.Uma isifunda singaphansi kwamandla, i-armature yokukhululwa kwe-undervoltage iyakhululwa.Futhi indlela yohambo lwamahhala nayo iyasebenza.Idivayisi yohambo oluhambisanayo isetshenziselwa isilawuli kude.Ngesikhathi sokusebenza okuvamile, ikhoyili yayo iphelelwa amandla.Uma kudingeka ibanga lokulawula, cindezela inkinobho yokuqala ukuze ikhoyili isebenze.
Isikhathi sokuthumela: Oct-15-2022