Suma:
Macircuit breaker anoita basa rakakosha pakuona kuti magetsi akachengeteka. Anodzivirira kuwandisa kwemagetsi, mashort circuit uye zvikanganiso zvemagetsi, anodzivirira hupenyu hwevanhu nemidziyo yemagetsi inokosha. Mublog rino, tichatarisa zvakadzama nyika yemacircuit breaker, tichinyanya kutarisa mutsauko nemabasa eRCCB, MCB neRCBO.
1. Ruzivo rwekutanga rwema "circuit breakers":
Tisati tanyatsoongorora zvakadzama, ngatitangei tanzwisisa kuti chii chinonzi circuit breaker. Chaizvoizvo, circuit breaker iswitch inongoerekana yashanda inobatsira kudzivirira macircuit kubva mukukuvadzwa kunokonzerwa nemagetsi akawandisa. Kana circuit yakawandisa kana kuti yakapfupika, circuit breaker inomisa kufamba kwemagetsi, ichidzivirira njodzi dzinogona kuitika dzakadai semoto wemagetsi.
2. Chinopwanya dunhu diki (MCB):
MaMCB ndiwo macircuit breaker anonyanya kushandiswa munzvimbo dzekugara nedzekutengeserana. Midziyo iyi midiki asi yakasimba yakagadzirirwa kudzivirira overcurrent inokonzerwa nekuwanda kwemagetsi kana short circuit. MaMCB anowanikwa mumhando dzakasiyana dze current ratings, zvichibvumira kugadziriswa kuti kuenderane nezvinodiwa zvakasiyana zvemagetsi. Anogona kugadziriswa nemaoko mushure mekugumburwa, izvo zviri nyore kushandisa zuva nezuva.
3. Chinopwanya dunhu remagetsi akasara (RCCB):
MaRCCB, anozivikanwawo seResidual Current Devices (RCDs), anopa imwe nhanho yekudzivirira nekuona nekudzivirira kubuda kwemvura panyika. Mafure aya anowanzoitika kana kondakita ye live phase ikasangana netsaona nechikamu che conductive chemuchina wemagetsi, senge simbi yakavharirwa. RCCB inotarisa magetsi ari kuyerera nepawaya dzinofamba nemhepo uye dzinodonha pakarepo kana paine kusawirirana. Kusawirirana uku kunogona kukonzerwa nekubatana kwevanhu nemudziyo une dambudziko, zvichideredza njodzi yekushandiswa kwemagetsi.
4. Chinopwanya dunhu remagetsi akasara (RCBO) nedziviriro yemvura inoyerera zvakanyanya:
RCBO inosanganisa hunhu hweMCB neRCCB kuti ipe dziviriro mbiri kubva pamagetsi anodarika mwero uye akasara. Midziyo iyi isarudzo inoshanda kana paine chikonzero chekudzivirira dunhu rakati kana mudziyo wega wega kubva kumatambudziko emagetsi. RCBO inowanzo kuwanikwa munzvimbo dzakakosha dzakadai sekicheni nedzimba dzekugezera uko kusangana nemvura kunowedzera njodzi yemagetsi. Pamusoro pezvo, maRCBO anobvumira macircuit ega ega kuparadzaniswa panguva yekugadzirisa kana kugadzirisa ukuwo mamwe magadzirirwo achiramba achishanda.
5. Misiyano mikuru nezvakanaka:
a) MCB inotarisa pakudzivirira kuwanda kwemagetsi kunokonzerwa nekuwanda kwemagetsi kana kupfupika kwemagetsi. Zviri nyore kushandisa, zvinogona kugadziriswa nemaoko, uye zvinoshandiswa zvakanyanya nekuda kwekukwanisika kwadzo uye kuwanikwa kwadzo.
b) RCCB inopa dziviriro kubva pakubuda kwemvura panyika kunogona kukonzerwa nekubatana kwevanhu nemidziyo isina kunaka kana waya dzakakuvara. Midziyo iyi inowedzera kuchengetedzeka uye inodzivirira njodzi dzemagetsi.
c) RCBO ine zvakanakira zveMCB neRCCB. Dzinodzivirira magetsi akawandisa uye akasara uye dzakanakira maseketi anonzwa kana nzvimbo dzinoda matanho akasimba ekuchengetedza.
6. Sarudza chinopwanya dunhu chakakodzera:
Kusarudza circuit breaker yakakodzera kunoenderana nezvinhu zvakasiyana-siyana, zvakaita semagetsi, kunzwa kwecircuit, uye zvinodiwa zvekuchengetedza. Nguva dzose bvunza nyanzvi yemagetsi kana mainjiniya wemagetsi anogona kuongorora zvaunoda uye kukurudzira mhando yecircuit breaker yakakodzera uye chiyero chekuisa kwako.
Muchidimbu:
Kunzwisisa musiyano uripo pakati pema "circuit breaker" akasiyana akadai seRCCB, MCB neRCBO kwakakosha pakuchengetedza kuchengetedzeka kwemagetsi munzvimbo dzekugara, dzekutengeserana uye dzemaindasitiri. MCB inodzivirira kubva pakukwira kwemvura, RCCB inodzivirira kubva pakudonha kwemvura, uye RCBO inopa dziviriro yakakwana kubva kuma "currents" ese ari maviri. Nekusarudza "circuit breaker" yakakodzera sisitimu yako yemagetsi, unogona kudzivirira njodzi dzinogona kuitika uye kuve nechokwadi chekuti vanhu nemidziyo zvakachengeteka.
Nguva yekutumira: Zvita-11-2023