Makaputsi eDunhu Akaumbwa (MCCBs): Nhanganyaya yeKuchengetedzwa kweMagetsi
Kuchengetedzeka kwemagetsi kwakakosha kumaindasitiri nemasekitori ese. Midziyo yakawanda nematekiniki zvakagadzirwa kuchengetedza michina, michina nevanhu kubva kunjodzi dzinogona kuitika dzemagetsi. Chimwe chezvishandiso zvakadaro chinoita basa guru mukuchengetedza magetsi ndichomuchina wekupwanya dunhu wekesi wakaumbwa (MCCB).
IyoMCCBchikamu chakakosha chedunhu rakagadzirirwa kupa dziviriro otomatiki kubva kumagetsi anodarika mwero, mapfupi, nezvimwe zvinokanganisa magetsi. Rinoshandiswa zvakanyanya mudzimba, mabhizinesi nemaindasitiri kudzivirira masisitimu emagetsi kubva mukukuvadzwa uye kudzivirira njodzi yemoto wemagetsi.
MCCBsanonzi "mabhokisi akaumbwa" nekuti akaiswa mubhokisi repurasitiki rakasimba rinopa kudziya nekudzivirira. Inozivikanwa nekusapisa zvakanyanya, hunyoro uye kushanduka kwemagetsi, purasitiki iyi yethermoset yakanakira kuchengetedza michina yekudzivirira magetsi yakaoma.
Maitiro emukati memuchina wekupwanya circuit wekasi wakaumbwa ane zvikamu zvikuru zviviri: trip unit uye current-carrier contacts. trip unit inoshanda sehuropi hweMCCB, ichiramba ichitarisa magetsi ari kufamba mudunhu. Kana paine circuit yakawandisa kana kuti short circuit, trip unit inoita kuti magetsi avhurike, zvichikanganisa kufamba kwemagetsi uye zvichibvisa magetsi asina kunaka. Ma "contacts" anotakura magetsi akagadzirwa nezvinhu zvemhando yepamusoro zvinoita kuti magetsi asapinda zvakanaka uye zvinopa simba rakanaka remagetsi.
Chimwe chezvakanakira zvikuru zveMCCBndiyo current yayo inogadziriswa. Kusiyana nemafuse echinyakare, maMCCB anobvumira mushandisi kugadzirisa current yerwendo yaanoda zvichienderana nezvinodiwa nemutoro chaiwo. Kuchinjika uku kunoita kuti maMCCB akodzere kushandiswa kwakasiyana-siyana kubva kumasekete emwenje ane voltage shoma kusvika kumichina yeindasitiri ine simba guru.
Pamusoro pe,MCCBinozivikanwa nekugona kwayo kupwanya simba. Iyi ndiyo simba guru remagetsiMCCBinogona kubata isati yagumburwa kana kukanganiswa kwedunhu. MCCB dzakagadzirirwa kubata mafungu emagetsi mapfupi uye dzinopa dziviriro yakavimbika yemagetsi, zvichideredza njodzi yekukuvara kwemidziyo uye njodzi dzemagetsi.
Kuwedzera pakukwanisa kwayo kuputsa zvinhu, akawanda emazuva anoMCCBsinopa zvinhu zvepamusoro zvakaita sekukwira kwemagetsi nemagetsi, kudzivirira zvikanganiso zvepasi uye kugona kudzora zviri kure. Zvinhu izvi zvinowedzera kuchengetedzeka uye kushanda zvakanaka kwehurongwa hwemagetsi, zvichiita kuti zvikwanise kuona nekukurumidza uye kupatsanura zvikanganiso, zvichideredza nguva yekushanda uye kukuvara kunogona kuitika.
Nekuda kwekugadzirwa kwayo kudiki uye zviri nyore kushandisa, maMCCB ari nyore kuisa nekugadzirisa. Izvi zvinoita kuti ave sarudzo yekutanga yevashandi vemagetsi nematekiniki, ukuwo vachiona kuti mashandiro avo anoshanda zvakanaka uye mhinduro dzinokurumidza kana magetsi akundikana.
Muchidimbu,ma "molded case circuit breakers" (MCCBs)vanoita basa rakakosha mukuona kuti magetsi akachengeteka uye kudzivirira masisitimu emagetsi kubva mukukuvadzwa kwemagetsi akawandisa uye mapfupi. Kufamba kwavo kunogadziriswa, kugona kwavo kupwanyika zvakanyanya uye maficha epamusoro anoita kuti vave sarudzo yakavimbika uye inoshanda zvakasiyana-siyana yekushandiswa kubva kuzvivakwa zvekugara kusvika kune zvivakwa zvikuru zvemaindasitiri. Nekudyara mari muma "molded case circuit breakers", vanhu nemabhizinesi vanogona kukoshesa kuchengetedzeka kwemagetsi, kuderedza njodzi dzinogona kuitika, uye kuona kuti masisitimu avo emagetsi anoshanda zvakanaka.
Nguva yekutumira: Nyamavhuvhu-30-2023