There are 4 time stages that can be set differently:
•
Dead time after 1-phase short circuits
•
Dead time after 2-phase short circuits
•
Dead time after 3-phase short circuits
•
Dead time for evolving faults
In this way, setting the parameter Dead time aft.1ph. pickup to invalid avoids an automatic
reclosing after 3-pole tripping due to 1-phase short circuits. This also applies to Dead time aft.2ph.
pickup and Dead time aft.3ph. pickup .
As soon as an evolving fault is recognized (see chapter 7.2.4.13 Evolving-Fault Detection During Dead Time),
a separate dead time for faults begins with the stopping of the fault. The total dead time is composed of the
part of the dead time that expired until the evolving fault was stopped for the 1st disruption plus the dead
time for the evolving fault. With the setting of the Dead time aft. evolv. fault to invalid, no
other automatic reclosing cycle is executed after tripping through the evolving fault. The tripping through
evolving faults is then finished.
[lopauare-010611-01.tif, 1, en_US]
Figure 7-42
Cyclic Automatic Reclosing Function - Logic of the Dead Time for the Operating Modes: With
Pickup
Protection and Automation Functions
7.2 Automatic Reclosing Function
SIPROTEC 5, High-Voltage Bay Controller, Manual 563
C53000-G5040-C015-9, Edition 11.2017
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