Akwai amfani da karamin mafi shirya a cikin tattalin kwamfyuta har zuwa 220 KV. Amma ba za a iya amfani da karamin mafi shirya don voltage daga 220 KV zuwa tattalin kwamfyuta masu shirya mai yawa. Don tattalin kwamfyuta masu shirya mai yawa, zai iya amfani da karamin hoholli don yanayi da current ya barci a kan. Amma sauyin da kuma gudanar da karamin hoholli a cikin ∑HV system ba su fadace ba. Yadda zan iya haɗe wannan abin da ba ta fadace ba shine amfani da bundled conductors don karamin hoholli a cikin tattalin kwamfyuta masu voltage level daga 220 KV zuwa.
Na ce ne bundled conductor zuwa waɗannan conductors wadanda suka dole da biyu ko kadan karamin mafi shirya, suka bundalci don samun zama da kyau a yi da current carrying capacity.
Amsa, na iya amfani da biyu ko kadan karamin mafi shirya per phase. Kuma don samun zama da kyau a yi da current carrying capacity na system, bundled conductor tana bayarwa masu alaka ga tattalin kwamfyuta. Bundled conductor tana tsara reactance na electric transmission line. Tana tsara kuma voltage gradient, corona loss, radio interference, surge impedance na transmission lines.
Tattaunan bundled conductor, geometric mean radius (GMR) na karamin tana faru. Saboda GMR na karamin tana faru, inductance na conductor tana ƙoƙarin faru. Idan kana nufin cewa akwai optimum sub-conductor spacing a cikin bundled conductor wadanda zai ba minima voltage gradient a kan surface na bundled conductor. Optimum spacing daga sub-conductors don tsara voltage gradient ita ce na ashi biyar zuwa ashi da ɗaya da circumference na karamin.
Saboda voltage gradient tana ƙoƙarin faru, radio interference tana ƙoƙarin faru.
Saboda inductance na bundled conductor tana ƙoƙarin faru, surge impedance na line tana ƙoƙarin faru saboda formula na surge impedance ita ce
Idan L ita ce inductance per phase per unit length, da C ita ce capacitance per phase per unit length na transmission line. Saboda surge impedance tana ƙoƙarin faru saboda bundling na karamin, surge impedance loading na karamin tana faru. Faruwar surge impedance loading tana faru zama da kyau a yi da transmission capacity na system.
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