Nhanganyaya yeMolded Case Circuit Breaker (MCCB)

Sumo yeNyaya Yakaumbwa Dunhu Rekupwanya (MCCB) yakachinja nzira yatinodzivirira nayo maseketi nemidziyo. Mudziyo uyu mutsva wakagadzirwa kuti udzivise otomatiki kuyerera kwemagetsi kana wapfuura mamiriro ekufamba, nokudaro uchipa dziviriro huru kubva pakuwanda kwemagetsi, kupfupika kwemagetsi uye kukanganisa kwevhu. MCCB iri mubhokisi repurasitiki uye inoshandisa mapurasitiki anodzivirira magetsi kuti aparadzanise maconductor nesimbi dzakagadzika. Nekusiyana kwayo kwakasiyana-siyana uye sarudzo, MCCB mhinduro inoshanda uye yakavimbika kune akasiyana mashandisirwo.

MaMCCB anowanzova nechikamu chekufamba chine thermal-magnetic, asi mamodheru makuru anogona kunge aine ma solid-state trip sensors. Aya ma trip units anopa basa guru rekuvhura circuit kana paine zvikanganiso. Ma trips anogona kukamurwa kuita mhando mbiri: thermal magnetic tripping uye electronic tripping, zvichibvumira vashandisi kusarudza dziviriro yakakodzera zvichienderana nezvinodiwa zvavo. Pamusoro pezvo, MCCB inowanikwa mumhando dzakasiyana dze current ratings dzinosanganisira 16, 25, 30, 40, 50, 63, 80, 100, 125, 160, 200, 225, 250, 315, 350, 400, 500 uye 630A, zvichiita kuti ive yakakodzera load capacity dzakasiyana.

Chimwe chezvinhu zvikuru zveMCCB kuvakwa kwayo kwakavharwa mukati meimba yepurasitiki. Dhizaini iyi inoita kuti zvikamu zvese zvemolded case circuit breaker zvinyatso dzivirirwa kubva kuzvinhu zvakatipoteredza, zvichivandudza kuvimbika uye hupenyu hwebasa remuchina. Uyezve, macontact ekuwedzera, ma undervoltage releases uye ma shunt releases zvinonyanya kushandiswa uye zvinogona kugadziriswa zviri nyore uye kubatanidzwa nemamwe mabasa sezvinodiwa. Kunyangwe chimiro chakabatana chemolded case circuit breaker chinoderedza kushanda, chinoita kuti zvive nyore kushanda nemaoko uye kugona kukuru kwekushandura magetsi kuti zvisangane nezvinodiwa zvakasiyana-siyana zvevashandisi mumashandisirwo akasiyana.

MCCB inopawo sarudzo yemagetsi anoburitsa magetsi akawanda, ayo akakamurwa kuita mhando mbiri: Kirasi A neKirasi B. Kirasi B MCCB inopa dziviriro yepamusoro yematanho matatu, zvichiita kuti ive yakakodzera kushandiswa kwakavimbika uye zvinodiwa pakushanda. Kune rumwe rutivi, Kirasi A MCCB ine thermal magnetic tripper ine musika wakakwira nekuda kwekushanda kwayo zvakanaka. Mhando dzese dzeMCCB dzakakodzera kushandiswa kwakasiyana-siyana mumaindasitiri nemabhizimisi, dzichipa dziviriro inodiwa yemagetsi uye kuona kuchengetedzeka uye kuvimbika kwemasisitimu emagetsi.

Muchidimbu, ma plastic case circuit breakers (MCCBs) ndiwo ma structure akakosha mumagetsi emazuva ano, achipa dziviriro yepamusoro uye mashandiro akavimbika. Nekuvharwa kwayo kwepurasitiki yakavharwa, ma modular components anogadziriswa uye sarudzo dzakasiyana dze trip unit, MCCB yakakodzera kune akasiyana siyana load capacity uye mashandisirwo. Ingave ichidzivirira matavi emagetsi kana ichipa dziviriro yepamusoro yedanho rechitatu, ma MCCB maturusi anoshanda zvakasiyana-siyana uye akakosha ekuona kuchengetedzeka uye kuvimbika kwemasystem emagetsi.