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Pictures: The MB Crusher shafts screener MB-HDS employed at the the Wahle-Mecklar project in Germany
This pilot project for burying high voltage cables is required by the German law on the expansion of the electricity grid (Gesetz zum Ausbau von Energieleitungen - EnLAG). After more than 10 years planning this 230 km of underground power lines at a voltage of 380 Kilovolts (kV) will connect the transformation substation in Wahle bei Braunschweig in Lower Saxony with the one in Mecklar bei Ludwigsau in Hesse, hence the name Wahle-Mecklar.
The MB-HDS shafts screener is designed to interchange the rotating shafts directly on-site. The screener, installed on a Volvo EC250E NL excavator, sifted the dug soil directly above the trench, and the excavation is filled with the same screened material of which is composed.