Substation

The measurements were performed on the 2^nd July 2012 at 06:00 p.m during clear weather conditions. The EMF measurements were performed for the Residence Kormakiti Street and substation "Kormakitis"" in Nicosia.

Limiting exposure values have been provided by the ICNIRP recommendations and are guidelines to many countries and organisations. The exposure limits at 50 Hz are tabulated in the following table according to the limits given by ICNIRP.

Reference levels for Occupational exposure ICNIRP
Frequency	Electric Field Strength, E (V/m)	Magnetic Field Strength, H (A/m)	Magnetic Flux Density, B (µT)
50 Hz	10000	400	500
Reference levels for General Public exposure ICNIRP
Frequency	Electric Field Strength, E (V/m)	Magnetic Field Strength, H (A/m)	Magnetic Flux Density, B (µT)
50 Hz	5000	80	100

Table 1: ICNIRP exposure limits for Occupational and General public exposure

The substation is rated at a nominal power of 1000 KVA. At the time when the measurements were performed the substation load was recoreded as:

Red Phase	Yellow Phase	Blue Phase
180.00 A	220.00 A	260.00 A

Table 2: Measured Load Current when building was fully operating

From the resultant load of all three phases as shown above we note that the load is 15.18 % of the nominal load (1000 KVA Transforemer). It must therefore be noted that during the summer or in periods of peak load this will directly affect and produce an increase to the electric and magnetic fields.

The highest magnetic field measurement was observed 2m away from the back corner of the substation - into the garden of the house, at the height of 0.30m. The measured value at this point was 10.78µT and the percentage of 10.78% as compared to the ICNIRP General Public Standard.

A detailed description of the maximum measured magnetic fields in the area of investigation is shown in the following table.

Magnetic Field Measurements
Measurement Method/Distance	Maximum Magnetic Field/T at Z Heigh- Percentage of ICNIRP General Occoupational/Public Standard/%
Measurement Method/Distance	0.3m	ICNIRP %	1m	ICNIRP %	1.75m	ICNIRP %
Substation Front side - Mesh - Maximum Values per Line
Measurement Line 0m away from substation Front side	3.437	3.437	2.545	2.545	1.421	1.421
Measurement Line 1m away from substation Front side	0.756	0.756	0.565	0.565	0.475	0.475
Measurement Line 2m away from substation Front side	0.360	0.360	0.244	0.244	0.213	0.213
Measurement Line 3m away from substation Front side	0.247	0.247	0.128	0.128	0.143	0.143
Substation Left side - Mesh - Maximum Values per Line
Measurement Line 0m away from substation Left side	3.937	3.937	8.143	8.143	10.783	10.783
Measurement Line 1m away from substation Left side	0.956	0.956	1.544	1.544	1.397	1.397
Measurement Line 2m away from substation Left side	0.496	0.496	0.589	0.589	0.755	0.755
Substation Right side - Mesh - Maximum Values per Line
Measurement Line 0m away from substation Right side	2.102	2.102	1.430	1.430	0.896	0.896
Measurement Line 1m away from substation Right side	0.507	0.507	0.443	0.443	0.378	0.378
Measurement Line 2m away from substation Right side	0.318	0.318	0.185	0.185	0.151	0.151
Magnetic Field Measurements - Residence Veranda
Measurement Point MP-A	--	--	0.069	0.069	--	--

Table 3: Magnetic field measurements inside area

The highest electric field measurement was observed at the front side of the substation at a height of 1 m. The measured value at this point was 4.786 V/m and a percentage of 0.096% as compared to the ICNIRP General Public standard.

The maximum electric field measurements in the area under investigation are shown in the following table.

Electric Field Measurements
Measurement Method/Distance	Maximum Electric Field-V/m at Z Height /m - Percentage of ICNIRP General Occoupational/Public Standard /%
Measurement Method/Distance	0.3m	ICNIRP %	1m	ICNIRP %	1.75m	ICNIRP %
Electric Field Measurements - Residence Area
Measurement point EP- B	--	--	4.786	0.096	--	--

Table 4: Maximum electric field measurements.

Substaion - Substation Kormakitis, Residence Kormakiti Street