275 kV underground cables are primarily used in Great Britain for the transmission of energy or information over short distances. In America, Africa or Asia, where the transmissions paths are several hundred km long, 220 kV are not advisable due to their high idle power.
| Measurand | Value | Feature | Remarks |
|---|---|---|---|
| magnetic flux density | 0.23 µT (calculated) | Great Britain | typical value at a distance of 20 m to the center and a height of 1 m above ground; installation depth: 0.9 m; spacing between the cores: 0.5 m [1] |
| magnetic flux density | 0.9 µT (calculated) | Great Britain | typical value at a distance of 10 m to the center and a height of 1 m above ground; installation depth: 0.9 m; spacing between the cores: 0.5 m [1] |
| magnetic flux density | 0.92 µT (maximum, calculated) | Great Britain | at a distance of 20 m to the center and a height of 1 m above ground; installation depth: 0.9 m; spacing between the cores: 0.5 m [1] |
| magnetic flux density | 3.26 µT (calculated) | Great Britain | typical value at a distance of 5 m to the center and a height of 1 m above ground; installation depth: 0.9 m; spacing between the cores: 0.5 m [1] |
| magnetic flux density | 3.58 µT (maximum, calculated) | Great Britain | at a distance of 10 m to the center and a height of 1 m above ground; installation depth: 0.9 m; spacing between the cores: 0.5 m [1] |
| magnetic flux density | 13.05 µT (maximum, calculated) | Great Britain | at a distance of 5 m to the center and a height of 1 m above ground; installation depth: 0.9 m; spacing between the cores: 0.5 m [1] |
| magnetic flux density | 24.06 µT (calculated) | Great Britain | typical value at a height of 1 m above ground at the center; installation depth: 0.9 m; spacing between the cores: 0.5 m [1] |
| magnetic flux density | 96.17 µT (maximum, calculated) | Great Britain | at a height of 1 m above ground at the center; installation depth: 0.9 m; spacing between the cores: 0.5 m [1] |
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