Macircuit breaker zvinhu zvakakosha mumasystem emagetsi, zvinoshanda semidziyo yekudzivirira kukuvara kunokonzerwa nekuwanda kwemagetsi uye mashort circuit. Macircuit breaker akagadzirwa kuti adzivise kufamba kwemagetsi otomatiki kana paine chikanganiso, zvichiita kuti system yemagetsi nevashandisi vayo vachengetedzeke. Chinyorwa chino chichaongorora mashandiro, mhando, uye kukosha kwemacircuit breaker mumashandisirwo emagetsi emazuva ano.
Basa guru remuchina wekupwanya magetsi nderekuvhura nekuvhara dunhu remagetsi. Kusiyana nemafusi echinyakare, ayo anofanira kutsiviwa mushure mekunge aputika, ma circuit breakers anogona kugadziriswazve mushure mekugumburwa, zvichiita kuti ave mhinduro iri nyore uye inoshanda yekudzivirira magetsi. Kana paine dambudziko remagetsi, senge kuwanda kwemagetsi (magetsi anodarika simba redunhu) kana short circuit (magetsi anoyerera nenzira isina kurongerwa), muchina wekupwanya magetsi unoona kusagadzikana uye unomisa kufamba kwemagetsi, zvichidzivirira njodzi dzinogona kuitika dzakadai semoto wemagetsi kana kukuvara kwemidziyo.
Kune mhando dzakasiyana-siyana dzemacircuit breaker, imwe neimwe yakagadzirirwa mashandisirwo chaiwo uye nharaunda. Mhando dzakajairika dzinosanganisira:
- Chinopwanya Dunhu Chidiki (MCB): Inoshandiswa muzvivakwa zvemudzimba nemabhizimisi kudzivirira kuwandisa kwemagetsi uye mapfupi. MaMCB madiki uye ari nyore kuisa mumabhokisi ekuparadzira.
- Chinopwanya Dunhu Renguva Dzekare (RCCB): Inozivikanwawo semudziyo wemagetsi unoramba uripo (RCD), circuit breaker iyi yakagadzirirwa kudzivirira kuvhunduka kwemagetsi nekuona kusawirirana kwemagetsi. Kana mumwe munhu akabata waya iri mhenyu, RCCB inodonha, yobva yadzima magetsi.
- Chinopwanya dunhu rekubuda kwepasi (ELCB): Kufanana neRCCB, ELCB inoshandiswa kuona zvikanganiso zvepasi uye kudzivirira kuvhunduka kwemagetsi. ELCB dzakakosha zvikuru munzvimbo dzine mvura dzakadai sedzimba dzekugezera nekunze.
- Chinopwanya Dunhu reMhepo (ACB): Rudzi urwu rwecircuit breaker runoshandiswa mumaindasitiri uye runogona kubata ma current ratings akakwira. Air circuit breakers anoshandiswa kuchengetedza masisitimu makuru emagetsi uye anogona kushandiswa nemaoko kana otomatiki.
- Madhiraivha eMagineti eHydraulic Magnetic Circuit: Aya macircuit breaker anoshandisa musanganiswa wezvinhu zvinopisa uye zvinoshandisa magineti kuvhura circuit. Anowanzo shandiswa pamagetsi makuru anoda kuchengetedzwa zvakanyanya uye kupfupika kwemagetsi.
Kukosha kwema "circuit breakers" hakufanirwe kutaurwa zvakanyanya. Anoita basa rakakosha mukuona kuti michina yemagetsi yakachengeteka uye kudzivirira vanhu nepfuma kubva kunjodzi dzemagetsi. Kunze kwekuchengetedzeka, ma "circuit breakers" anobatsirawo mukuvandudza kuvimbika kwemagetsi. Nekudzivirira kukuvara kwemidziyo uye kuderedza nguva yekushanda, anobatsira kuchengetedza kushanda zvakanaka munzvimbo dzekugara nedzemabhizimisi.
Uyezve, kufambira mberi kwetekinoroji kwakatungamira mukugadzirwa kwema "smart circuit breakers", ayo anopa kugona kwakawedzerwa kwakadai sekutarisa kure. Midziyo iyi yemazuva ano inogona kupa data rekushandisa magetsi panguva chaiyo, zvichigonesa vashandisi kugadzirisa mashandisirwo esimba uye kuona matambudziko asati awedzera.
Zvichitaurwa zviri nyore, macircuit breaker zvishandiso zvakakosha zvekuchengetedza zvinodzivirira masisitimu emagetsi kubva pakuzara kwemagetsi uye mashort circuit.Kune mhando dzakasiyana-siyana dzemacircuit breaker, dzakakodzera kushandiswa kwakasiyana-siyana, zvichiita kuti kuiswa kwemagetsi kuve kwakachengeteka uye kwakavimbika. Nekufambira mberi kwetekinoroji, ramangwana remacircuit breaker rinotaridzika zvakanaka, sezvo hunyanzvi huchawedzera kushanda kwahwo uye kushanda zvakanaka mukuchengetedza zvivakwa zvemagetsi. Kunzwisisa basa nekukosha kwemacircuit breaker kwakakosha kune chero munhu anoshanda nemagetsi, angave nyanzvi kana muridzi wemba ari kutsvaga kuchengetedza.
Chii chinonzi circuit breaker?
Chinopwanya dunhu mudziyo wekuchengetedza magetsi wakagadzirirwa kuchengetedza dunhu remagetsi kubva mukukuvadzwa kunokonzerwa nemagetsi anodarika ayo anogona kutakura michina zvakachengeteka (overcurrent). Basa rayo guru nderekumisa kuyerera kwemagetsi kudzivirira michina uye kudzivirira moto.
Nguva yekutumira: Gumiguru-13-2025