Iintlobo ze-RCD Overview

Ii-Residual Current Devices (RCDs) zizixhobo zokhuseleko eziyimfuneko eziyilelwe ukukhusela ukutshatyalaliswa kombane kunye neengozi zomlilo kufakelo lombane. Babeka iliso kwibhalansi yombane wokungena kunye nokushiya isiphaluka, kwaye ukuba bafumanisa umahluko, baqhawula ngokukhawuleza ukunikezelwa kombane ukukhusela ingozi. Kukho iintlobo ezimbini eziphambili zee-RCDs: Uhlobo A kunye noHlobo lwe-B, nganye ineempawu zayo ezithile kunye nezicelo.

Chwetheza ii-RCDs
Uhlobo A RCDs lolona hlobo luxhaphakileyo kwaye ziyilelwe ukubonelela ngokhuseleko kwi-AC sinusoidal, i-pulsating DC, kunye nemisinga eshiyekileyo ye-DC. Zikulungele ukusetyenziswa kwiindawo ezininzi zokuhlala kunye nezorhwebo apho iinkqubo zombane zithe ngqo, kwaye umngcipheko wokudibana nemisinga ye-non-sinusoidal okanye i-pulsating currents iphantsi.
Enye yeempawu eziphambili zoHlobo lwe-RCDs kukukwazi kwabo ukubona kwaye baphendule kwimisinga eshiyekileyo ye-DC, edla ngokuveliswa zizixhobo zombane ezinjengeekhompyuter, iiTV, kunye nezibane ze-LED. Oku kubenza balungele ukusetyenziswa kufakelo lombane lwanamhlanje apho izixhobo ezinjalo zixhaphakile.

Uhlobo B RCDs
Ii-RCD zodidi lwe-B zibonelela ngezinga eliphezulu lokhuseleko xa kuthelekiswa nohlobo lwezixhobo ze-A. Ukongeza ekunikezeni ukhuseleko kwi-AC sinusoidal, i-pulsating DC, kunye ne-DC egudileyo ye-residual currents njenge-Type A RCDs, zikwabonelela ngokhuseleko kwi-DC ecocekileyo ye-residual currents. Oku kubenza balungele ukusetyenziswa kwiindawo apho umngcipheko wokudibana nemisinga ye-DC esulungekileyo iphezulu, njengakuseto lwemizi-mveliso, ukufakelwa kwe-photovoltaic (amandla elanga), kunye nezikhululo zokutshaja izithuthi zombane.
Ukukwazi kwee-RCD zoHlobo lwe-B ukubona nokuphendula imisinga yentsalela ye-DC ecocekileyo kubalulekile ekuqinisekiseni ukhuseleko lofakelo lombane olusebenzisa imithombo yombane ye-DC. Ngaphandle kolu khuseleko, kukho umngcipheko wokutshatyalaliswa kombane okanye umlilo, ngakumbi kwiinkqubo ezithembele kakhulu kumandla e-DC, afana neepaneli zelanga kunye neenkqubo zokugcina ibhetri.

Ukukhetha i-RCD eLungileyo
Xa ukhetha i-RCD yesicelo esithile, kubalulekile ukuqwalasela iimfuno ezithile kunye neengozi ezinxulumene nofakelo. Uhlobo lwe-RCDs lufanelekile kwiindawo ezininzi zokuhlala kunye nofakelo lwezorhwebo apho umngcipheko wokudibana ne-non-sinusoidal okanye i-pulsating currents iphantsi. Nangona kunjalo, kwiindawo apho kukho umngcipheko ophezulu wokudibana nemisinga ye-DC ecocekileyo, njengakwimizi-mveliso okanye ufakelo lwamandla elanga, ii-RCD zodidi lwe-B ziyacetyiswa ukuba zinike inqanaba eliphezulu lokhuseleko.

Uhlobo A kunye nee-RCD zoHlobo lwe-B zombini zizixhobo zokhuseleko eziyimfuneko eziyilelwe ukukhusela ukutshatyalaliswa kombane kunye neengozi zomlilo kufakelo lombane. Ngelixa Uhlobo lwe-RCDs lufanelekile kwizicelo ezininzi zokuhlala kunye nezorhwebo, Ii-RCD zodidi lwe-B zibonelela ngezinga eliphezulu lokhuseleko kwaye zinconywa kwiindawo apho umngcipheko wokudibana nemisinga ye-DC ecocekileyo iphezulu.
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