Substation - Lakatamia, Nicosia

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This report was prepared by the Electromagnetics and Novel Applications Laboratory of the University of Cyprus within the framework of measuring and assessing the electric and magnetic field levels by AC power systems at the location of interest:

·         Substation SS STRATIS TSIRKA and plot at Lakatamia on the 05/10/2018 from 14:25 pm until 15:30 pm.

The measurements were performed according to the measurements of low-frequency magnetic and electric fields with regard to exposure of human beings (IEC 61786:1998) and measurement procedures with regard to public exposure (IEC 62110:2009). More specifically, three-point measurements were performed to assess the fields (assuming non-uniform fields) in the range of 5 Hz – 32 kHz using the EFA- 300 Isotropic Field Analyser. The measurements were performed at the position of interest at three heights 0.5 m, 1.0 m and 1.5 m. above the ground or floor level of the building. Beside power equipment or in a building, measurement was performed at a horizontal distance of 0.2 m and 2.0 m from its surface or boundary wall. It is important to note that in this investigation additional point measurements were taken at locations indicated by the customer (non-standardized measurements outside the measurement procedures with regard to public exposure (IEC 62110:2009).

The recorded measurements were compared to the reference levels described in the Council Recommendation of 12th July 1999 on the limitation of exposure of the general public to electromagnetic fields (0 Hz to 300 GHz), 1999/519/EC. Respect to the recommended reference levels will ensure respect to the basic restrictions. The reference levels of exposure provided in 1999/519/EC are in accordance to the Cypriot Legislation.

The maximum magnetic field values measured at the location of interest are summarized in the following Tables.

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Starting Point

Measurement height (m)

Magnetic field level (µT)

Field quantity

Frequency (Hz)

ICNIRP

General Public (%)

Distance from

starting point (m)

1

0.5 (above ground level)

0.214

Resultant magnetic field

50

0.214

1.0 (above ground level)

0.212

Resultant magnetic field

50

0.212

1.5 (above ground level)

0.076

Resultant magnetic field

50

0.076

-

0.168

three-point average

50

0.168

Maximum magnetic field values outside the substation, 0.2 m away from the rear side boundary wall.

 

Starting Point

Measurement height (m)

Magnetic field level (µT)

Field quantity

Frequency (Hz)

ICNIRP

General Public (%)

Measuring point

5

0.5 (above ground level)

0.003

Resultant magnetic field

50

0.003

1.0 (above ground level)

0.007

Resultant magnetic field

50

0.007

1.5 (above ground level)

0.009

Resultant magnetic field

50

0.009

-

0.006

three-point average

50

0.006

Maximum magnetic field values at the location of interest (plot).



From the measurements performed it can be concluded that the:

·         Magnetic field measurements performed at the position of interest were below the recommended General Public reference levels of the National Exposure Limits provided in 1999/519/EC.