Magnetically shielded low voltage distribution roomMagnetically shielded low voltage distribution roomMagnetic shield for power station room

In the largest train station in Switzerland, the Zurich main station, a transformer station had to be moved because of the construction of new railway tracks. Directly above and below of the new location of the transformer station, there are so called "places of sensitive use", mainly shops.

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.

Transformer room magnetically shieldedTransformer room magnetically shielded Shielded low voltage distribution room with framework for the distribution cabinets on the floor.Shielded low voltage distribution room with framework for the distribution cabinets on the floor. Magnetic shielding in switch gear room to reduce 50 Hz stray fieldsMagnetic shielding in switch gear room to reduce 50 Hz stray fields