Umahluko phakathi kweeCables zeDC kunye neeCables AC

1. Iinkqubo ezahlukeneyo zokuSebenza:

Iintambo zeDCzisetyenziswa kwiinkqubo zothumelo lwangoku ngokuthe ngqo emva kokulungiswa, ngelixa iintambo ze-AC zisetyenziswa ngokuqhelekileyo kwiinkqubo zamandla ezisebenza kwi-industrial frequency (50Hz).

2. Ilahleko yoMbane eNgaphantsi kuThutho:

Xa kuthelekiswa neentambo ze-AC, iintambo ze-DC zibonisa ilahleko yamandla amancinci ngexesha lenkqubo yothumelo. Ilahleko yamandla kwiintambo ze-DC ngokuyintloko ngenxa yokumelana ngokuthe ngqo kwangoku kwabaqhubi, kunye nelahleko yokugquma incinci (ixhomekeke kubukhulu bokuguquguquka kwangoku emva kokulungiswa). Kwelinye icala, ukuxhathisa kwe-AC kwiintambo ze-AC ezine-voltage ephantsi kukhulu kancinci kunokumelana ne-DC, kwaye kwiintambo ezinombane ophezulu, ilahleko ibalulekile ngenxa yefuthe elisondeleyo kunye nefuthe lolusu, apho ilahleko yokuxhathisa idlala indima enkulu, ngakumbi. iveliswe yi-impedance evela kwi-capacitance kunye ne-inductance.

3. ULungelo oluPhezulu loThutho kunye neLahleko yoMda oPhantsi:

Iintambo ze-DC zibonelela ngosulelo oluphezulu kunye nelahleko encinci yemigca.

4. Ukulungelelaniswa koLungelelaniso lwangoku kunye noTshintsho loMkhombandlela woThutho lwaMandla.

5. Ngaphandle kweendleko eziphezulu zezixhobo zokuguqula xa kuthelekiswa neenguqu, iindleko ezipheleleyo zokusebenzisa iintambo ze-DC ziphantsi kakhulu kuneentambo ze-AC. Iintambo ze-DC zine-bipolar, kunye nesakhiwo esilula, ngelixa iintambo ze-AC zinezigaba ezintathu zocingo okanye i-five-wire system ezineemfuno eziphezulu zokhuseleko lokukhusela kunye nesakhiwo esinzima ngakumbi. Iindleko zeentambo ze-AC ziphindwe kathathu kuneentambo ze-DC.

6. Ukhuseleko oluPhezulu ekuSetyenzisweni kweeCables DC:

- Iimpawu zendalo zothumelo lwe-DC zenza kube nzima ukuphembelela okwangoku kunye nokuvuza kwangoku, ukunqanda ukuphazamiseka kombane kunye nezinye iintambo ezidibeneyo.

-Iingcingo ezifakwe kwi-single-core azifumani lahleko ye-magnetic hysteresis ngenxa yeetreyi zentsimbi zesakhiwo, ukugcina ukusebenza kokuhanjiswa kwentambo.

- Iintambo ze-DC zinezinga eliphezulu le-short-circuit kunye ne-overcurrent yokukhusela amandla.

- Xa amasimi ombane ombane afanayo asetyenziswa kwi-insulation, indawo yombane ye-DC ikhuseleke kakhulu kunebala lombane le-AC.

7. Ufakelo olulula, uLondolozo oluLula, kunye neeNdleko eziPhantsi kwiiCables zeDC.

 

I-InsulationIimfuno ze-AC efanayo kunye ne-DC Voltage kunye neyangoku:

Xa umbane ofanayo usetyenziswa kwi-insulation, indawo yombane kwiintambo ze-DC incinci kakhulu kuneentambo ze-AC. Ngenxa yomahluko obalulekileyo wolwakhiwo phakathi kwala macandelo mabini, eyona ndawo iphezulu yombane ngexesha lokunika amandla intambo ye-AC igxininiswe kufutshane ne-conductor, ngelixa kwiintambo ze-DC, igxile kakhulu ngaphakathi kwe-insulation layer. Ngenxa yoko, iintambo ze-DC zikhuselekile (i-2.4 amaxesha) xa i-voltage efanayo isetyenziswe kwi-insulation.