On the survey of the magnetic fields in power distribution substations

In this paper we present the results of the low frequency magnetic fields measurements inside of two transformer and distribution stations in the country of Iasi. We made measurements in different areas inside two stations, near magnetic field sources and in control rooms, by using measurement instruments, which permit both spot measurements and long term survey of magnetic fields. The highest values of the field were obtained on Section 4 of Station 1 (9845 nT) and in Station 2 near the electrical transformer (7408 nT). So, maximum values obtained in the transformer stations were under 10 μT, which means that the value of the magnetic field is less than 5% compared to the maximum allowable by ICNIRP.