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 22 kv pole structures Medium tension aerial structure High tension tower in double triplet Production of energy based on solar collectors electricity pylons 3d Transformer Structure grounding 115 kv Visionair5 Wind Turbine Vertical Axis Boom Transformer station 33 kv and 132 kv Terminal pole with parallel pole disconnector Padmunted transformer base underground area-mine electrical substation Downloader db ozn iram 2472 and iec 99-4 Single line substation 60kv Electrical substation standard nb044 One-line diagram of proposed substation h type structure for transformer single municipal post