A muputsi wedunhumudziyo wemagetsi unoshandiswa zvakanyanya muma AC circuits. Utility model inowanzo kuve nemoveable contact, moveable contact uye static contact. Mu circuit, utility model inogona kudimbura magetsi, kubatanidza magetsi uye kuchengetedza michina yemagetsi. Zvichienderana nechimiro chayo uye musimboti wekushanda, inogona kukamurwa kuitamuchina wekupwanya dunhu wechikamu chimwe chete, chinodzora dunhu chine zvikamu zvitatu uyemuputsi wedunhu remhepo. Circuit breaker, semudziyo unopindira pakati pe control circuit ne power supply, inoita basa rakakosha mu power grid. Kana circuit yakawandisa, short circuit nezvimwe zvikanganiso, dziviriro yemagetsi panguva yakakodzera ichabviswa, kuitira kuti circuit ivhurike kuchengetedza kuchengetedzeka kwevanhu nemidziyo nezvimwe zvishandiso kubva mukukuvadzwa. Sakamuputsi wedunhuInoshandiswa zvakanyanya mumagetsi inonziwo "over-undervoltage protector" kana kuti "fuse". Rimwe remabasa akakosha nderekudzima magetsi otomatiki kana paine short circuit.
Musimboti wekushanda
Kana AC yemagetsi ichipinda mucircuit breaker ikasangana, kukwezvana kwemagetsi, zvichiita kuti mashandiro emuchina wekushanda asunungurwe, zvichiita kuti circuit breaker irege kudonha, nokudaro ichicheka circuit.
Mukuita, mudziyo wekunonotsa unogona kuwedzerwa kuitira kuti dunhu rigone kubviswa chete mushure mekunge switch yapera mukati menguva yakatarwa.
Kana magetsi e "short-circuit current" adarika nemu "circuit breaker", simbi iri pedyo ne "contact" inonyungudika uye inobviswa nekubuda kwe "thermal" nekuda kwesimba re "arc kinetic" uye kupisa kwakanyanya kunokonzerwa nekunyungudika kwe "contact", nokudaro ichibvisa "current".
Kana chinja chemagetsi chakavharwa kana kuti dunhu rakabatana naro rikatadza kushanda, circuit breaker inogona kutyora dunhu munguva pfupi.
Zvichienderana nechimiro chechimiro, chakakamurwa kuva zvitatu zvakagadziriswa, zvinofamba uye zvakamiswa.
Zvichienderana nerudzi rwekuburitsa, nzira yekuburitsa yakakamurwa kuita mafomu maviri ekushandisa nemagetsi.
Zvichienderana nekushanda, nzira yekufambisa bhandi inogona kukamurwa kuva mhando mbiri dzekutumira bhandi uye dzisina kutumira bhandi;
Kupatsanura
(1)Maputsi edunhuinogona kukamurwa kuita vacuum interrupter chamber (VHV), arc interrupter gate (AVR), vacuum release (VSD) uye vacuum contactor zvichienderana nechinhu chinopindira arc.
(2) Macircuit breaker anogona kukamurwa kuita mhando nhatu: single-phase circuit breaker, three-phase circuit breaker uye air circuit breaker.
(3) Ma air circuit breakers anogona kukamurwa kuita mhando mbiri, AC neDC, zvichienderana nevashandisi nenzvimbo dzakasiyana dzekushandisa.
(4) Circuit breaker inogona kusanganiswa ne air capacitor bank, air inductor nezvimwe zvishandiso zvemagetsi zvichienderana nenzira yekuisa, uye inogona kushandiswa semudziyo wemagetsi unodzivirira.
(5) Dzakakamurwa kuva mhando dzedziviriro dzinopfuura mwero, mhando dzedziviriro dzinopfuura mwero uye mhando dzedziviriro dzinopfuura mwero zvichienderana nehunhu hwadzo hwedziviriro.
(6) Kune magetsi emhepo e100V akatevedzana uye magetsi emagetsi zvichienderana nemagetsi azvo akayerwa uye magetsi emagetsi.
Paramita yekutsanangurwa
Rudzi rwecircuit breaker rwakafanana nerwemimwe midziyo yemagetsi, yakaita sekodhi ine mavara ekuti "P", "Y" nemanhamba ekuchinja mashandisirwo emagetsi, uye kodhi ine mavara ekuti "C" nemanhamba ekuchinja masimbi, nezvimwewo, asi mabasa avo nemaumbirwo akasiyana uye kazhinji haagone kushandiswa pazvinangwa zvakajairika. Semuenzaniso, tora ZF6 naZF14.
2) Voltage yakayerwa: inoreva kukosha kwakayerwa kunogona kutakura circuit breaker pasi pe rated frequency (50Hz) uye rated frequency (25Hz).
3) Rated current: zvinoreva current yepamusoro-soro inoshanda iyo circuit breaker inogona kutsungirira mumamiriro ezvinhu akatarwa.
4. "Kukwanisa kuputsa" zvinoreva kuti circuit breaker inogona kubvisa AC 50Hz kana DC 1000V kana pasi payo zvichienderana nemamiriro akatarwa, uye nguva yekuputsa haifanirwe kudarika 5ms.
5) Hunhu hwekushanda
Nheyo yekusarudza
1, Yakakamurwa kuita:
(1) Ma "single-phase circuit breakers" anoreva ayo anoshandiswa kudzivirira ma "circuit", ma "motor" nezvimwe zvishandiso zvemagetsi. "circuit breaker" ine zvakanakira zvekushanda nguva nenguva uye nyore, asi inofanirwa kudzima magetsi panguva iyo "line" ne "motor" zvakawandisa kana kuti zvakapfupikiswa kudzivirira tsaona kuti isakure. Nokudaro, "circuit breaker" inofanira kuzadzisa zvinodiwa zvekudzima magetsi mukati menguva yakatarwa, nenguva pfupi yekuputsa magetsi, kusarudza zvakanaka nezvimwewo.
(2) Izwi rekuti "circuit breaker ine voltage shoma yeAC ine zvikamu zvitatu" rinoreva circuit breaker inoshandiswa mu motor protection and control circuits, iyo ine basa rakafanana ne single-phase circuit breaker, asi yakawedzera disconnecting switch kune chimiro chemukati chemagetsi kuitira kuti ikwanise kuchengetedza mamota ne control circuits mu AC circuits. Pamusoro pezvo, ine overload relay, undervoltage relay uye zero sequence current relay.
Nguva yekutumira: Kukadzi-17-2023