EHIGHWAY. During the construction of the eHighway, it was checked that the overhead line system does not have any potentially harmful environmental effects in the form of electromagnetic fields. For this purpose, measurements were carried out at substation 1 and evaluated by an expert with regard to the 26th Federal Immission Control Ordinance (BImSchV).

The FuE-Zentrum FH Kiel GmbH took individual indications from road users that irritations from radio connections were occurring on the eHighway route in the area of the railroad bridge as an opportunity to carry out further measurements to check the electromagnetic fields at substation 2. In the fall of last year, an independent engineering firm was commissioned with the measurement and preparation of an expert opinion in accordance with the 26th BImSchV.

Measurements were then taken in the area around the substation and under the overhead line on the roadway. For this purpose, the overhead line was subjected to a current of approx. 400A over a longer period of time using a so-called load bank (load resistors). The fields for the alternating magnetic field and the direct magnetic field were recorded at various points over two days using various measuring devices. The measured values were extrapolated to the maximum design of the system. The results have recently been made available to the system operator and consistently show only low, inconspicuous values.