In order to ease the understanding, the lines have three different colours, depending on the capacity usage: green, orange or red. This classification reflects the capacity usage of the lines in percent and gives information about the condition of the line in case of failure. Failure means that a technical items (for example due to lightning) breaks down and one or more other elements have to additionally take up the transmitted power.
- Green line (up to 50 percent capacity usage) = no problems in case of failure
- Orange line (capacity greater than/equal to 50 percent up to less than/equal to 70 percent) = close to the capacity limit in case of failure
- Red line (capacity usage greater than 70 percent) = at the capacity limit in case of failure
Our lines vary in their potential transmission capacity. Depending on the voltage level (220 or 380 kilovolts) and the number of circuits of a line some are already in the red zone at a certain load, while others are still marked in green for the same amount of power.
If for any reason, no data can be made available for one or more lines (no data available, line taken out of operation, possibility to draw conclusions about the behaviour of a single network customer, etc.) these lines appear in grey.