Isimiso Sokusebenza Se-Circuit Breaker

I-circuit breakerngokuvamile yakhiwe uhlelo lokuxhumana, uhlelo lokucisha i-arc, indlela yokusebenza, iyunithi yokuhamba, kanye ne-casing.
Umsebenzi we-circuit breaker ukunquma nokuxhuma i-load circuit, nokunquma i-circuit enephutha, ukuze kuvinjelwe ukwanda kwengozi nokuqinisekisa ukusebenza okuphephile. I-high-voltage circuit breaker idinga ukuphuka i-1500V, kanti ugesi uyi-1500-2000A arc, futhi lawa ma-arcs anganwetshwa abe yi-2m futhi aqhubeke nokusha ngaphandle kokucima. Ngakho-ke, ukucima i-arc kuyinkinga okumele ixazululwe kuma-high-voltage circuit breakers.
Ama-circuit breaker ane-voltage ephansi, okwaziwa nangokuthi okuzenzakalelayoukushintsha komoya, ingasetshenziswa ukuvula nokuvala amasekethe okulayisha, futhi ingasetshenziswa nokulawula ama-motor aqala kaningi. Umsebenzi wayo ulingana nesamba seminye noma yonke imisebenzi yeswishi yommese, i-over-current relay, i-voltage loss relay, i-thermal relay kanye ne-leaking protector. Iyithuluzi elibalulekile lokuvikela kunethiwekhi yokusabalalisa ene-low-voltage.
Ama-circuit breaker ane-voltage ephansi anemisebenzi eminingi yokuvikela (ukulayisha ngokweqile,isifunda esifushane, ukuvikelwa kokungasebenzi kahle kwamandla kagesi, njll.), inani lokusebenza elilungisekayo, amandla aphezulu okuphuka, ukusebenza okulula, ukuphepha, njll., ngakho-ke zisetshenziswa kabanzi. Isakhiwo kanye nomgomo wokusebenza I-low-voltage circuit breaker yakhiwe ngendlela yokusebenza, oxhumana nabo, amadivayisi okuvikela (ukukhishwa okuhlukahlukene), uhlelo lokucisha i-arc nokunye.
Ukuxhumana okuyinhloko kwe-low-voltage circuit breaker kuvalwa ngesandla noma ngogesi. Ngemva kokuthi ukuxhumana okuyinhloko kuvaliwe, indlela yokukhubeka yamahhala ivala ukuxhumana okuyinhloko endaweni evaliwe. Ikhoyili yokukhululwa kwe-overcurrent kanye ne-thermal element yokukhululwa kwe-thermal kuxhunywe ngokulandelana ne-isekethe eyinhloko,futhi ikhoyili yokukhululwa kwe-undervoltage ixhunywe kanye nokunikezwa kwamandla. Uma isekethe ifinyeziwe noma igcwele kakhulu, i-armature yokukhululwa kwe-over-current izodonsa ukuze yenze indlela yokugoba yamahhala isebenze, futhi ukuxhumana okuyinhloko kuzonqamula isekethe eyinhloko. Uma isekethe igcwele kakhulu, i-thermal element yokukhululwa kwe-thermal izokhiqiza ukushisa ukuze igobe ishidi le-bimetal, icindezele indlela yokukhululwa yamahhala ukuthi isebenze. Uma isekethe ingaphansi kwamandla, i-armature yokukhululwa kwe-undervoltage iyakhululwa. Iphinde isebenze indlela yokugoba yamahhala. Ukukhululwa kwe-shunt kusetshenziselwa ukulawula okude. Ngesikhathi sokusebenza okuvamile, ikhoyili yayo iyacinywa. Uma kudingeka ukulawula ibanga, cindezela inkinobho yokuqala ukuze unike amandla ikhoyili.