Umahluko phakathi kwe-DC mini i-breaker circuit breaker kunye ne-AC circuit breaker

Umahluko phakathi kwe-DC mini i-breaker circuit kunyeUmqhekezi wesekethe ye-AC

I-DC (I-Direct Current) i-mini circuit breakers kunye ne-AC (Alternating Current) i-circuit breakers zombini zisetyenziselwa ukukhusela iisekethe zombane kwi-overcurrents kunye neesekethe ezimfutshane, kodwa zineeyantlukwano eziphambili ngenxa yeempawu ezicacileyo ze-DC kunye ne-AC system zombane.

Ipolarity yangoku:
Owona mahluko ubalulekileyo phakathi kwe-DC kunye ne-AC i-circuit breakers kukukwazi kwabo ukuphatha i-polarity yangoku. Kwisekethe ye-AC, ukuhamba kwangoku kuguqula isalathiso ngezikhathi ezithile (ngokuqhelekileyo i-50 okanye i-60 amaxesha ngomzuzwana, kuxhomekeke kwi-AC frequency).Abaphuli beesekethe ze-ACziyilelwe ukuphazamisa ukuhamba kwangoku kwindawo yokuwela i-zero, apho i-waveform yangoku idlula kwi-zero. Kwelinye icala, ii-Circle breakers ze-DC zenzelwe ukujongana nokuhamba ngoku unidirectional kunye nokuphazamisa ukuhamba kwangoku kwinqanaba elithile lombane.

Uphazamiseko lweArc:
Kwiisekethe ze-AC, okwangoku ngokwemvelo iwela i-zero ngexesha lomjikelo ngamnye, onceda ekucimeni ngokwemvelo i-arc eyenza xa isiphaluka siphazamiseka.Umqhekezi wesekethe ye-ACs ithatha ithuba lale ndawo yokunqumla u-zero ukucima i-arc, yenza inkqubo yokuphazamiseka ibe lula. Kwiisekethe ze-DC, akukho ndawo yendalo yokuwela i-zero, eyenza ukuphazamiseka kwe-arc kube nzima ngakumbi. Izaphuli zesekethe zeDC ziyilelwe ukujongana nemingeni ethile yokuphazamiseka kwe-arc kwiisekethe zeDC.

Arc Voltage:
I-voltage kubo bonke abafowunelwa be-breaker circuit ngexesha lenkqubo yokuphazamiseka kwe-arc yahlukile kwiinkqubo ze-DC kunye ne-AC. Kwiinkqubo ze-AC, i-arc voltage isondela kwi-zero kwindawo yendalo yokuwela i-zero, inceda kwinkqubo yokuphazamiseka. Kwiinkqubo ze-DC, umbane we-arc uhlala uphezulu, nto leyo eyenza ukuphazamiseka kube nzima. Izaphuli zesekethe zeDC ziyilelwe ukuba zimelane kwaye zicime ii-arc voltages eziphezulu.

Ulwakhiwo kunye noYilo:
I-AC circuit breakers kunye ne-DC circuit breakers zakhiwe ngokwahlukileyo ukuze zihlangabezane neemfuno ezithile zeenkqubo zazo. Iindlela zokuphazamiseka kwe-arc, izixhobo ezisetyenzisiweyo, kunye noyilo loqhagamshelwano lunokwahluka phakathi kwe-AC kunye ne-DC ye-breaker circuit.

Usetyenziso:
Abaphuli beesekethe ze-ACzisetyenziswa ikakhulu kwiinkqubo zokuhambisa umbane kwindawo yokuhlala, yorhwebo, kunye nezicelo zoshishino, apho amandla e-AC asemgangathweni. Iziqhekeza zesekethe ezincinci zeDC, kwelinye icala, ziqhele ukusetyenziswa kwiinkqubo zokuhambisa amandla eDC, iibhanki zebhetri, iinkqubo zamandla ahlaziyekayo (ezifana nelanga nomoya), kunye nezicelo ezikhethekileyo kushishino apho kusetyenziswa umsinga othe ngqo.

Isishwankathelo, umahluko ophambili phakathi kwe-DC mini i-breaker circuit breakers kunyeAbaphuli beesekethe ze-ACzilele ekukwazini kwabo ukuphatha ipolarity yangoku, iimpawu zokuphazamiseka kwe-arc, iimfuno zombane, ulwakhiwo, kunye nokusetyenziswa kwazo ngokwahlukeneyo. Kubalulekile ukusebenzisa uhlobo olufanelekileyo lwe-breaker circuit esekelwe kwinkqubo ethile yombane ukuqinisekisa ukhuseleko olusebenzayo kunye nokusebenza okukhuselekileyo.