Iintambo ze-Medium Voltage (MV) zibaluleke kakhulu kwiinkqubo zokuhambisa amandla ombane, ngokuqhelekileyo zisebenza kumbane ophakathi kwe-1 kV ne-35 kV. Ezi ntambo zibalulekile ekugqithiseni amandla ngokukhuselekileyo nangempumelelo ukusuka kwizitishi ezincinci ukuya kubasebenzisi bokugqibela, amaziko emizi-mveliso, kunye neenxalenye ezahlukeneyo zeziseko zophuhliso. Ukunikezelwa kokubaluleka kwazo, ukuqinisekisa ukuthembeka kunye nokuthembeka kweentambo zeMV kubaluleke kakhulu. Enye yeendlela eziphambili zokuqinisekisa imeko yabo kukuvavanywa -nombane wombane ophezulu. Siza kuphonononga ukuba kutheni uVavanyo lweVoltage ePhakamileyo luyimfuneko kwiiCables zeMV.
1. Ukuqinisekiswa kweMfezeko yeCable Insulation
Eyona njongo yovavanyo lwamandla ombane aphezulu kukuqinisekisa ukuthembeka kwenkqubo yokugquma kwintambo yombane yeMV. Iziphene ze-insulation ezifana ne-voids, iintanda, ukungena kokunyakama, okanye iziphene zokuvelisa kunokukhokelela ekuphumeni okuyingxenye okanye ukuchithwa kwe-insulation epheleleyo, okukhokelela ekungaphumeleli kwentambo. Uvavanyo lwamandla ombane aphezulu lwahlula ezi ziphene ngokucinezela ukugquma ngaphaya komgangatho oqhelekileyo wombane, ukunceda ukukhomba iintambo ezingahambelaniyo nemigangatho yomgangatho.
2. Ukuqinisekisa ngokuSebenza okuKhuselekileyo nokuthembekileyo kothungelwano lweentambo.
Iintambo zeMV ziqhele ukufakwa ngaphantsi komhlaba okanye kwiindawo apho ukuzitshintsha kubiza imali eninzi kwaye kudla ixesha-. Ukungaphumeleli kwezi ntambo kunokukhokelela ekucinyweni kombane, ukonakala kwezixhobo, iingozi zokhuseleko, kunye nelahleko enkulu yemali. Uvavanyo lwamandla ombane aphezulu luqinisekisa ukuba iintambo zombane zinamandla awoneleyo e-dielectric ukuze zimelane nombane osebenzayo kunye nakuphi na ukunyuka okudlulayo, ukunciphisa ukubakho kokungaphumeleli kwenkonzo-. Olu vavanyo lubonelela abaqhubi benkqubo ngokuzithemba kwiinethiwekhi zabo zentambo.
3. Ukuthotyelwa kweMigangatho yoShishino kunye neNgcaciso
Izixhobo zombane kunye nabavelisi beentambo kufuneka babambelele kwimigangatho engqongqo efana ne-IEC 60502, IEEE 400, kunye nezinye ezichaza iimfuno zovavanyo lwentambo, kubandakanya novavanyo lokumelana nombane ophezulu. Ukwenza olu mvavanyo kuqinisekisa ukuthotyelwa kwezivumelwano kunye nezibophelelo zolawulo, ngaloo ndlela kuqinisekisa umgangatho wemveliso kunye nokuphila ixesha elide.
4. Ukufunyanwa komonakalo woFakelo
Iintambo ze-MV zingonakaliswa ngexesha lofakelo ngenxa yokugoba, ukutsala, okanye iimeko zokusingqongileyo ezifana nokungena komswakama. Uvavanyo lombane ophezulu olwenziwa emva kofakelo luyakwazi ukubona naluphi na ufakelo{1}}iziphene ezinokuthi azibonakali ngexesha lohlolo olubonakalayo. Oku kufunyaniswa kwangaphambili kuvumela isenzo sokulungisa phambi kokunika amandla.
5. ULondolozo oluThintelayo kunye noVavanyo lweMeko
Inokonakalisa umgangatho wokugquma kwentambo, ehlala ifakwe ngaphantsi komhlaba okanye kwiindawo apho ukuyibuyisela kubiza kwaye kudla ixesha-. Ukungaphumeleli kwezi ntambo kunokubangela ukucima kombane, umonakalo wezixhobo, iingozi zokhuseleko kunye nelahleko enkulu yemali. Uvavanyo lwamandla ombane aphezulu luqinisekisa ukuba iintambo zombane zinamandla awoneleyo e-dielectric ukuze zimelane nombane osebenzayo kunye nakuphi na ukunyuka okudlulayo, ukunciphisa ukubakho kokungaphumeleli kwenkonzo-. Olu vavanyo lubonelela abaqhubi benkqubo ngokuzithemba kwiinethiwekhi zabo zentambo. Uvavanyo lwamaxesha ombane aphezulu njengenxalenye yeenkqubo zogcino lwesiqhelo lunceda ekuvavanyeni imeko eqhubekayo yeentambo, evumela izinto eziluncedo ukuba zicwangcise ukutshintshwa okanye ukulungisa ngokukhawuleza kunokuba ziphinde zisebenze emva kokusilela.