Cholumikizira cha telescopic h-voltage cholekanitsidwa ndi ndodo yotetezedwa chimagwiritsidwa ntchito magawo osiyanasiyana a ma ccconductors mu ntchito ya live line. Chothandizira chotetezedwa chosungunuka malinga ndi mtunda wa mzere, chili ndi cholumikizira cha conductor chachangu katatu, chomwe chimatha kugwira ma conductor atatu kotero Gwirani waya wotentha ndikutulutsa waya ndizosavuta komanso mwachangu. Ndodo yayikulu imapangidwa ndi epoxy resin yamphamvu kwambiri ndi chubu chotetezedwa ndi pultrusion. Kukana kwa voliyumu: 100kV/300mm, mphamvu yayikulu yamakina, magwiridwe antchito abwino otetezedwa. Ndi otetezeka komanso osavuta kugwiritsa ntchito.