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<< Click to Display Table of Contents >> Navigation: Components and parameters > Switches and protections > Load switch |
A load switch can be placed on either side of a branch or on an element.
To add a load switch, select a branch or element and the corresponding node and choose Insert | Switches and protections | Load switch.
A load switch can not occur in a field together with a circuit breaker.
A load switch that has been copied can be pasted in several places at the same time. To do this, select the relevant feeders (a feeder is defined as a branch or element with the connecting node) and choose Start | Clipboard | Paste special | Paste load switch in all selected feeders.
PARAMETERS
General
Parameter |
Default |
Unit |
Description |
Name |
|
|
Load switch name. |
Disconnectors |
|
|
Indicates the presence of one or two disconnectors |
Load switch
The load switch has been equipped with a type specification, with the following parameters:
Parameter |
Default |
Unit |
Description |
Type |
|
|
Load switch type name. |
Short |
|
|
Load switch short name. |
Unom |
0 |
kV |
Rated voltage |
Inom |
0 |
A |
Rated current |
Ik,make |
0 |
kA |
Maximum making current |
Ik,dynamic |
0 |
kA |
Maximum dynamic current |
Ik,thermal |
0 |
kA |
Maximum thermal short circuit current |
at t |
0 |
s |
Maximum thermal short circuit duration |
Reliability
The switch reliability parameters are listed below.
Parameter |
Default |
Unit |
Description |
Failure frequency |
0 |
per year |
Mean number of occurrences that the switch fails (short circuit) |
Repair duration |
0 |
minutes |
Mean duration of repair or replacement |
Remote control |
no |
yes/no |
Presence of remote control |
The presence of remote control influences the fault isolation and switching times (short/long) in the reliability calculation.