Isishwankathelo seentlobo ze-RCD

Izixhobo zangoku ezisele (ii-RCD) zizixhobo zokhuseleko ezibalulekileyo ezenzelwe ukukhusela ukutshayiswa kombane kunye neengozi zomlilo kwiindawo zokufakelwa kombane. Zijonga ibhalansi yombane ongenayo nophumayo kwisekethe, kwaye ukuba zifumanisa umahluko, zikhawuleza ziwuqhawule umbane ukuze zithintele ingozi. Kukho iintlobo ezimbini eziphambili ze-RCD: Uhlobo A kunye nohlobo B, nganye ineempawu zayo kunye nokusetyenziswa kwayo.

Ii-RCD zohlobo A
Ii-RCD zohlobo A zezona zixhaphakileyo kwaye zenzelwe ukubonelela ngokhuseleko kwi-AC sinusoidal, pulsating DC, kunye ne-DC residual currents ezigudileyo. Zifanelekile ukusetyenziswa kwiindawo ezininzi zokuhlala kunye nezorhwebo apho iinkqubo zombane zilula khona, kwaye umngcipheko wokudibana ne-non-sinusoidal okanye pulsating currents uphantsi.
Enye yezona mpawu ziphambili zee-Type A RCDs kukukwazi kwazo ukubona nokuphendula kwi-pulsating DC residual currents, ezidla ngokuveliswa zizixhobo ze-elektroniki ezifana neekhompyutha, iiTV, kunye nezibane ze-LED. Oku kuzenza zilungele ukusetyenziswa kwiindawo zokufakelwa kombane zanamhlanje apho izixhobo ezinjalo zixhaphakileyo.

Ii-RCD zohlobo B
Ii-RCD zohlobo B zibonelela ngokhuseleko oluphezulu xa kuthelekiswa nezixhobo zohlobo A. Ukongeza ekukhuseleni kwi-AC sinusoidal, i-pulsating DC, kunye nemisinga eseleyo ye-DC efana nee-RCD zohlobo A, zikwakhusela kwimisinga eseleyo ye-DC ecocekileyo. Oku kuzenza zilungele ukusetyenziswa kwiindawo apho umngcipheko wokudibana nemisinga ye-DC ecocekileyo uphezulu, njengakwiindawo zoshishino, ukufakelwa kwamandla elanga, kunye nezikhululo zokutshaja izithuthi zombane.
Amandla ee-RCD zohlobo B okufumanisa nokuphendula kwi-DC residue currents ezicocekileyo abalulekile ekuqinisekiseni ukhuseleko lokufakelwa kombane okusebenzisa imithombo yamandla e-DC. Ngaphandle kolu khuselo, kukho umngcipheko wokothuka kombane okanye umlilo, ingakumbi kwiinkqubo ezixhomekeke kakhulu kumandla e-DC, njengeephaneli zelanga kunye neenkqubo zokugcina iibhetri.

Ukukhetha i-RCD eyiyo
Xa ukhetha i-RCD yesicelo esithile, kubalulekile ukuqwalasela iimfuno kunye nemingcipheko ethile enxulumene nokufakelwa. Ii-RCD zohlobo lwe-A zifanelekile kwiindawo ezininzi zokuhlala kunye nezorhwebo apho umngcipheko wokudibana nemisinga engeyiyo eye-sinusoidal okanye ebethayo uphantsi. Nangona kunjalo, kwiindawo apho kukho umngcipheko ophezulu wokudibana nemisinga ye-DC ecocekileyo, njengakwiindawo zokufakelwa kwamandla emizi-mveliso okanye elanga, ii-RCD zohlobo lwe-B ziyacetyiswa ukuba zibonelele ngokhuseleko oluphezulu.

Ii-RCD zohlobo A kunye nohlobo B zombini zizixhobo zokhuseleko eziyimfuneko ezenzelwe ukukhusela ukutshayiswa kombane kunye neengozi zomlilo kwiindawo zokufakelwa kombane. Nangona ii-RCD zohlobo A zifanelekile kwiindawo ezininzi zokuhlala kunye nezorhwebo, ii-RCD zohlobo B zibonelela ngokhuseleko oluphezulu kwaye ziyacetyiswa kwiindawo apho umngcipheko wokudibana nemisinga ye-DC ecocekileyo uphezulu.
Ukuba ufuna ukwazi okungakumbi ngale nto, nceda ukhululeke ukuqhagamshelana nathi.
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