In the year 2018, together with the company Nopo Engineering, we installed enclosed conductor bars Fels in a very demanding foundry environment. These operations are characterized not only by a very dusty environment with a strong abrasive effect but also by a strong concentration of combustion products. In this case, there were several crane runways in lengths from 20m to 100m on which were used enclosed conductor bars Fels Elite. Some cranes were equipped with triple current collectors. The result is trouble-free operation even after 3 years.