Substation - Substation Kikillos, 19 Kriou Nerou Avenue, Ayia Napa

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The measured substation/residence is located in Kriou Nerou Avenue in Ayia Napa. The measurements were performed on the 24th of July 2009 at 11:00 am.

kikillos_1 kikillos_2

Figure 1: Substation "Kikillos"

Figure 2: Inside the residence - Kitchen

The substation is rated at a nominal power of 500 KVA. At the time when the measurements were performed, the substation load power was recorded as:


Red Phase

Yellow Phase

Blue Phase

75 A

90 A

90 A

Table 1: Measured load current


The resultant load of all three phases was 12.2 % utilization of the nominal load current.

Limiting exposure values have been provided by the ICNIRP recommendations and are guidelines to many countries and organizations. 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 2: ICNIRP Exposure limits for Occupational and General Public exposure

The maximum obtained values are represented below and compared to the ICNIRP limits. The highest magnetic field inside the residence was observed in the kitchen, with a value 0.38 μT (2 m away from the starting point) and a percentage of 0.38 % as compared to the ICNIRP General Public standard.

Magnetic Field Measurements - Inside residence

Distance from Side /m

Maximum Magnetic Field at Z Height /m - Percentage of ICNIRP General Public Standard /%

0.3m

ICNIRP %

1m

ICNIRP %

1.75m

ICNIRP %

Measurements inside the residence-Left side of the substation

0m away from left side

0.38

0.38%

0.34

0.34%

0.34

0.34%

1m away from left side

0.22

0.22%

0.18

0.18%

0.17

0.17%

Table 3: Magnetic Field Measurements inside residence

Accordingly the highest magnetic field value outside was observed 2m away from the back side of the distribution transformer, with a value 8.6 μT (4 m away from the starting point) and a percentage of 8.6 % as compared to the ICNIRP General Public standard. The following table summarizes the highest recorded measured values outside.

Outside Field Measurements

Distance from Side /m

Maximum Magnetic Field at Z Height /m - Percentage of ICNIRP General Public Standard /%

0.3m

ICNIRP %

1m

ICNIRP %

1.75m

ICNIRP %

Outside Substation Field Measurements - Front side

0m

0.70

0.70%

0.79

0.79%

0.43

0.43%

1m

0.23

0.23%

0.22

0.22%

0.15

0.41%

2m

0.12

0.12%

0.11

0.11%

0.07

0.07%

Outside Substation Field Measurements - Right side

0m

2.10

2.10%

4.16

4.16%

1.52

1.52%

1m

0.83

0.83%

0.51

0.51%

0.46

0.46%

2m

0.42

0.42%

0.37

0.37%

0.33

0.33%

Outside Substation Field Measurements - Back side

0m

5.48

5.48%

1.82

1.82%

1.10

1.10%

1m

7.34

7.34%

3.36

3.36%

1.60

1.60%

3m

8.60

8.60%

2.42

2.42%

1.50

1.50%

Table 4: Magnetic Field Measurements outside area