For tripping through evolving faults, the entire dead time consists of the part of the dead time expired until
disconnecting the evolving fault for the 1-pole interruption plus the dead time for the fault together, see
Figure 7-43.
The dead time for evolving faults is started with the return of the operate indication or with the opening of all
3 circuit-breaker poles, provided the circuit-breaker auxiliary contacts are connected.
3-Pole Tripping of the Circuit Breaker for Automatic Reclosing Function Blocking through Evolving Faults in a 1-Pole
Dead Time
If due to an evolving fault there is a blocking of the automatic reclosing function in the 1-pole dead time
without a protection function submitting a 3-pole trip command, for example, during an evolving-fault detec-
tion with pickup, the automatic reclosing function can create a 3-pole trip command. Thus, the circuit breaker
will have 3-pole tripping in which the blocking of the automatic reclosing function will occur.
[lo_fofeer_080115, 1, en_US]
Figure 7-44
Cyclic Automatic Reclosing Function - Logic of Evolving-Fault Detection
Protection and Automation Functions
7.2 Automatic Reclosing Function
SIPROTEC 5, High-Voltage Bay Controller, Manual 565
C53000-G5040-C015-9, Edition 11.2017
To Next Page
Loading...
