Home Electricity Power lines Air - underground transition. Air – underground transition. Description Save High voltage aerial - underground transition in a truncated cone-shaped pole. Format DWG File size 562.73 KB DOWNLOAD DWG share your appreciation Related Posts Bench for transformers and pad mounted electrical substation measurement center Substation and equipment standards Medium voltage network design and planimetry Isometric concentration of meters Transition 115 to 34.5 kv for 3 insulators Electrification project document in remote communities-nreca Enclosure electrical substation. urban power lines Distribution line and network expansion c. new Power transformer – 3d Concrete post 9 m. Lamppost Medium voltage arming electrical substation 3d substation pa type structure Biposte air station sub