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A link is the model for a connection between two nodes, which has close to zero impedance.
A link can only be applied if the nominal voltages of both nodes are equal.
PARAMETERS
General
In this form the switches on both sides of the connection can be opened or closed.
Parameter |
Description |
Name |
Name of the connection |
Subnet border |
Division of parts of the network which are fed through different transformers or sources |
From-node |
Name of the node from which the cable is connected |
To-node |
Name of the node to which the cable is connected |
The link runs from a From-node towards a To-node. The From-node and To-node can be exchanged by using the button: <>.
Ampacity
A Link has a rated current Inom and a maximum short-circuit current Ik(1s). If specified, the loading will be presented in the results. If not specified, the link is assumed to be infinitely strong and its loading will not be shown.
Connection
The connection of a link to a busbar system can be defined on the tab Connection as:
•rail selectable,
•not rail selectable or
•fixed.
This only affects the graphical representation.
Impedances
The impedances of the link are adjustable in the options, in Calculation | General. The possible values are:
R, X, R0 and X0 = 1 µΩ tot 10 mΩ
Reliability
Parameter |
Default |
Unit |
Description |
Failure frequency |
0 |
per year |
Mean number of occurrences that the link fails (short circuit) |
Repair duration |
0 |
minutes |
Mean duration of repair or replacement |
Maintenance frequency |
0 |
per year |
Mean number of occurrences that the link is in maintenance |
Maintenance duration |
0 |
minutes |
Mean duration of maintenance |
maint. cut-off duration |
0 |
minutes |
Mean duration of cancellation of maintenance in case of emergency |