Since shops are defined as "places with sensitive use", measures to reduce low frequency magnetic fields had to be taken in the areas above and below the electrical rooms, in order to meet the "Legal limits of the Swiss regulation of non-ionising radiation, NISV". Consequently, the entire transformer station had to be magnetically shielded.
The transformer station consists of three rooms, one room for the four transformers, one for the medium-voltage switchgear and one for the low voltage distribution. In order to ensure legal limits are met, the rooms were passively shielded on all six sides of the rooms, with Systron PowerShield®. A total area of over 800 m2 had to be shielded.