KunzwisisaAC, DC, uye MCBs: Gwaro Rakazara
Munyika yeinjiniya yemagetsi uye kugoverwa kwesimba, AC (alternating current), DC (direct current), uye MCB (miniature circuit breakers) ipfungwa huru dzinofanirwa kunzwisiswa nemunhu wese ane hunyanzvi uye anofarira. Chinyorwa chino chinoongorora zvakadzama zvikamu zvitatu izvi zvakakosha, tichiongorora tsananguro dzazvo, mashandisirwo azvo, uye hukama hwazvo.
Chii chinonzi AC?
Kuchinjana kwemagetsi (AC) imagetsi anochinjana mafambiro nguva nenguva. Kusiyana nemagetsi akananga (DC), ayo anoyerera akananga kumwe chete, AC inoratidzwa ne sinusoidal waveform uye ndiyo nzira inonyanya kushandiswa pakuchinjana magetsi mumasisitimu emagetsi. Kuwanda kwemagetsi eAC kunoyerwa muHertz (Hz), 50 Hz iriyo frequency yakajairika munzvimbo zhinji dzepasi uye 60 Hz muNorth America.
AC inonyanya kushandiswa pakugovera magetsi nekuti inogona kushandurwa nyore nyore kuita mavoltage akasiyana, zvichiita kuti ikwanise kufambiswa zvakanaka munzvimbo refu. Kugona uku kwakakosha pakuendesa magetsi kudzimba, mabhizinesi, nemaindasitiri. Kukwanisa kuwedzera voltage yekutapurirana uye kuderedza voltage kuti ishandiswe zvakachengeteka ndeimwe yezvakanakira zvikuru zveAC.
Chii chinonzi DC?
Kururama kwakananga (DC), kune rumwe rutivi, kuyerera kwemagetsi kunotenderera nenzira imwe chete. Mudunhu reDC, kuyerera kwemagetsi kunotenderera nenzira imwe chete, iyo inowanzo gadzirwa nezvinhu zvakaita semabhatiri, ma solar panels, uye ma fuel cells. Simba reDC rinokosha kumidziyo yakawanda yemagetsi, kusanganisira makombiyuta, mafoni, uye mwenje ye LED, nekuti michina iyi inoda voltage yakagadzikana kuti ishande zvakanaka.
Kunyangwe DC isingashande zvakanaka seAC mukufambisa mamhepo kure, yave kufarirwa zvakanyanya mumakore achangopfuura, kunyanya nekuwedzera kwesimba rinogona kushandiswazve uye mota dzemagetsi. Matekinoroji akadai semasisitimu emagetsi anotungamira (HVDC) akabuda kuti agone kufambisa simba reDC zvakanaka kure kure.
Chii chinonzi MCB?
Miniature circuit breaker (MCB) iswichi inongoerekana yaita inodzivirira macircuit emagetsi kubva pakuwanda kwemagetsi uye ma short circuit. Ma MCB akagadzirwa kuti abvise macircuit kana magetsi adarika mwero wakatarwa, achidzivirira midziyo yemagetsi kubva mukukuvadzwa kunogona kuitika uye achideredza njodzi yemoto wemagetsi. Iwo chinhu chakakosha mumidziyo yemagetsi yemazuva ano, ichipa nzira yakavimbika uye inoshanda yekudzivirira macircuit.
MaMCB anowanikwa mumhando dzakasiyana-siyana dzemashandisirwo akasiyana. Anowanzo shandiswa mudzimba, mumabhizinesi, uye mumaindasitiri kuitira kuti masisitimu emagetsi ashande zvakachengeteka uye zvinobudirira. Mabhenefiti eMCB pane mafusi echinyakare anosanganisira kugadzika patsva, nguva yekupindura nekukurumidza, uye kuvimbika kwakawedzerwa.
Hukama huripo pakati peAC, DC neMCB
Kunzwisisa hukama huripo pakati peAC, DC, uye MCBs kwakakosha kune chero munhu anoshanda muinjiniya yemagetsi kana kugadzirisa. MCBs dzinogona kushandiswa muAC neDC circuits, asi kusarudza mhando chaiyo yeMCB kwakakosha. AC MCBs dzakagadzirirwa kubata hunhu hwesimba reAC, nepo DC MCBs dzichifanira kuverengerwa voltage chaiyo uye current levels yeDC applications.
Pakugadzira sisitimu yemagetsi, mainjiniya anofanirwa kufunga nezverudzi rwemagetsi ari kushandiswa uye zvishandiso zvekudzivirira zvakakodzera. Semuenzaniso, mu solar system inogadzira magetsi akananga, kushandisa DC-rated MCB kwakakosha kuti uve nechokwadi chekuchengetedzeka uye kuvimbika. Kusiyana neizvi, mu residential wiring uko alternating current ndiyo yakajairika, AC-rated MCB inodiwa.
Muchidimbu
Muchidimbu, AC, DC, uye MCB zvinhu zvakakosha mumagetsi emazuva ano. Kunzwisisa hunhu hwazvo, mashandisirwo azvo, uye hukama hwazvo kwakakosha pakuona kuti magetsi anogoverwa zvakachengeteka uye zvinobudirira. Sezvo tekinoroji ichiramba ichifambira mberi, kukosha kwepfungwa idzi kucharamba kuchikura, saka nyanzvi dziri mumunda uyu dzinofanira kuramba dziine ruzivo uye hunyanzvi mukushandisa kwadzo. Kunyangwe uri mainjiniya, technician, kana munhu anofarira zvemitambo, kuziva zvekutanga zveAC, DC, uye MCBs kuchawedzera kunzwisisa kwako masisitimu emagetsi nekushanda kwawo.
Nguva yekutumira: Zvita-30-2024