Functions
2.4 Load Restoration
SIPROTEC, 7RW80, Manual
C53000-G1140-C233-1, Release date 10.2010
57
Procedure
The start of a load restoration element is triggered by the tripping of the associated underfrequency element.
Processing will terminate, if the restoration signal for the circuit breaker is issued or the function has been
blocked. If the underfrequency trips again during the output of the restoration signal, the load restoration
element will restart.
The following graphic shows the interaction of underfrequency protection and load restoration.
Figure 2-7
Load Restoration - Start