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Electromagnetic fields

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Elektromagnetische Felder

Transformer station

Transformer stations (final distribution substations) are used within distribution networks to transform the electric energy from several thousand volts (medium voltage) to 230 or 400 volts (low voltage) used in homes.

One transformer station can feed several low voltage circuits and serve some ten or hundreds households. Total electric current in the low voltage circuits is higher than the current in the medium voltage circuit. Because the low frequency magnetic field strength depends on the amount of electric current, conductors within the low voltage circuits are the most relevant field sources.

Magnetic flux densities of about 100 microtesla can occur at the outer walls of transformer stations. At a distance of a few meters from the stations field levels are considerably lower.

State of 2017.03.02

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