The measured substation and residence are located in Nicou Demetriou Street in Larnaca. The measurements were performed on the 23rd of April 2009 at 09:30 am.
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Red Phase |
Yellow Phase |
Blue Phase |
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115 A |
135 A |
135 A |
Table 1: Measured load current
The resultant load of all three phases was 29.33% 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.
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Reference levels for Occupational exposure ICNIRP |
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Frequency |
Electric Field Strength, E (V/m) |
Magnetic Field Strength, H (A/m) |
Magnetic Flux Density, B (µT) |
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50 Hz |
10000 |
400 |
500 |
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Reference levels for General Public exposure ICNIRP |
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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
A detailed description of the maximum measured magnetic fields in the outside area is shown in the following table.
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Outside Field Measurements - residence |
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Distance from Side /m |
Maximum Magnetic Field (µT) at Z Height /m - Percentage of ICNIRP General Public Standard /% |
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0.3m |
ICNIRP % |
1m |
ICNIRP % |
1.75m |
ICNIRP % |
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Measurements outside the residence - Garden Entrance |
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Point E |
-- |
-- |
0.11 |
0.11% |
-- |
-- |
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Outside Substation Field Measurements - Front side |
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0m |
0.58 |
0.58% |
1.30 |
1.30% |
1.12 |
1.12% |
|
1m |
0.42 |
0.42% |
0.23 |
0.23% |
0.31 |
0.31% |
|
2m |
0.19 |
0.19% |
0.16 |
0.16% |
0.15 |
0.15% |
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Outside Substation Field Measurements - Left side |
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0m |
4.84 |
4.84% |
11.76 |
11.76% |
22.10 |
22.10% |
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1m |
1.06 |
1.06% |
1.26 |
1.26% |
1.16 |
1.16% |
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2m |
0.53 |
0.53% |
0.43 |
0.43% |
0.63 |
0.63% |
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Outside Substation Field Measurements - Right side |
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0m |
0.49 |
0.49% |
0.43 |
0.43% |
0.26 |
0.26% |
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1m |
0.20 |
0.2-% |
0.20 |
0.20% |
0.14 |
0.14% |
|
2m |
0.11 |
0.11% |
0.11 |
0.11% |
0.07 |
0.07% |
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Outside Substation Field Measurements - Back side |
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Point F |
-- |
-- |
0.03 |
0.03% |
-- |
-- |
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Point G |
-- |
-- |
0.08 |
0.08% |
-- |
-- |
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Point H |
-- |
-- |
0.04 |
0.04% |
-- |
-- |
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Point I |
-- |
-- |
0.01 |
0.01% |
-- |
-- |
Table 3: Magnetic Field Measurements in the outside area
Accordingly a detailed description of the maximum measured magnetic fields in the inside area is shown in the table below.
.
|
Inside Field Measurements |
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|
Distance from Side /m |
Maximum Magnetic Field (µT) at Z Height /m - Percentage of ICNIRP General Public Standard /% |
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|
0.3m |
ICNIRP % |
1m |
ICNIRP % |
1.75m |
ICNIRP % |
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|
Inside the Residence |
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Point A |
-- |
-- |
0.05 |
0.05% |
5.399 |
1.08% |
|
Point B |
-- |
-- |
0.04 |
1.24% |
0.928 |
0.19% |
|
Point C |
-- |
-- |
0.07 |
0.67% |
1.005 |
0.20% |
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Point D |
-- |
-- |
0.03 |
0.04% |
0.163 |
0.03% |
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Inside the Substation |
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Point E |
-- |
-- |
56.00 |
11.20% |
0.025 |
0.03% |
|
Point F |
-- |
-- |
6.00 |
1.20% |
0.011 |
0.01% |
|
Point G |
-- |
-- |
143.00 |
28.60% |
0.03 |
0.03% |
Table 4: Magnetic Field Measurements in the inside area (residence and substation)