The optical fiber links in the ELIA network are of the order of 3 types : - Underground optical connection made by placing a HDPE pipe in a trench and/or a drilled hole, followed by blowing a conventional OF cable into t…
he HDPE pipe. - Optical aerial connection made by placing an OPGW cable or an OF cable wound between the HV line towers. The optical aerial connection is terminated on the two end pylons of the HV line. The overhead line is extended by an underground connection into the building. - A combined aerial
and underground connection of the two previous types and is used for cable/line transitions. Fibre-optic connection works between ELIA sites are subdivided into : - Civil engineering works: trenching, drilling, pipe laying, MH placement, e