Chii chinonzi Vacuum Circuit Breaker (VCB)?

Vacuum circuit breaker chishandiso chakakosha chinoshandiswa kudzora nekudzivirira magetsi ari mumasisitimu emagetsi. Chinoshanda nekukanganisa kana kuvhura circuit mumamiriro ezvinhu asina kujairika kana asina kunaka, akadai se short circuit kana overload. Kusiyana nema circuit breakers echinyakare, maVCB anoshandisa vacuum kudzima arc inoumbwa panguva yekukanganiswa. Iyi nzira yepamusoro inovimbisa dziviriro yedunhu yakavimbika uye inoshanda, zvichiita kuti VCB ive sarudzo inozivikanwa mumaindasitiri akasiyana-siyana.

Pamusoro pekuchengetedza kwayo kusina matambudziko, VCB ine mabhenefiti akati wandei. Chekutanga, vanokwanisa kudzima arc mu vacuum pasina chikonzero chekuwedzera insulating medium, zvichibvumira dhizaini diki inoda kugadziriswa kushoma. Pamusoro pezvo, nguva yavo yekupindura nekukurumidza (inoyerwa muma microseconds) inoita kuti dziviriro yezvikanganiso irambe iripo, ichidzivirira michina yemagetsi inokosha. Zvinonzwisisika kuti VCB ine hupenyu hwakareba hwebasa kupfuura ma circuit breakers echinyakare, haina magasi anokuvadza akadai seSF6, uye ine hushamwari kune zvakatipoteredza.

Kushandiswa kwakasiyana-siyana kwema "vacuum circuit breakers" kunoita kuti akwanise kushandiswa zvakasiyana-siyana. Ingava muma "power stations", muma "parks" kana muzvivakwa zvekugara, ma "VCBs" anosangana nezvinodiwa zvakasiyana-siyana zvemagetsi nemagetsi. Kubva pakudzivirira ma "transformers" nema "generator" kusvika pakudzivirira moto wemagetsi, aya ma "circuit breakers" anoita basa rakakosha mukuchengetedza kuchengetedzeka kwemagetsi makuru.

Mukupfupisa, ma "vacuum circuit breakers" chikamu chakakosha chezvivakwa zvemagetsi zvemazuva ano. Kugona kwawo kuchengetedza masisitimu emagetsi kubva pakukanganisa, pamwe chete nekugadzirwa kwawo kwakabatana uye zvinhu zvisingakuvadzi nharaunda, zvinoita kuti ave sarudzo yekutanga mumaindasitiri akasiyana. Sezvo tekinoroji ichiramba ichifambira mberi, hapana mubvunzo kuti maVCB achaita basa guru mukuona kuchengetedzeka uye kushanda zvakanaka kwemasisitimu emagetsi ari kuchinja.