Siemens SIPROTEC 5 - Application and Setting Notes I Fund. Trig

Gradient Trigger for Rising and Dropping Gradients of the Current
With the parameters dM/dt rise (/Filter time) and dM/dt drop (/Filter time), you define
from which threshold value the parameterized filtering time starts a fault record.
Application and Setting Notes I Fund. Trig
Parameter: Mode
•
Default setting (_:9751:1) Mode = off
With the Mode parameter, you activate the trigger for normal operation (On) or for the test mode (Test).
Parameter Value Description
on
The function block Trig. I fund 1 is activated and the fundamental
component monitored according to the set trigger parameters.
off
The function block Trig. I fund 1 is deactivated.
test
The function block Trig. I fund 1 is activated for test purposes.
Parameter: Phase-selective
•
Default setting (_:9751:117) Phase-selective = no
With the Phase-selective parameter, you define whether you want to set the threshold values of the level
triggers and of the gradient trigger phase-selectively or not.
Parameter Value Description
no
You do not adjust the threshold values of the level triggers and of the
gradient trigger phase-selectively.
The following threshold values apply to all 3 phases:
•
Max. (Non-phs sel.)
•
Min. (Non-phs sel.)
•
+dM/dt (Non-phs sel.)
•
-dM/dt (Non-phs sel.)
The phase-selective parameters can be set for each trigger, but are not
effective
yes
You adjust the threshold values of the level triggers and of the gradient
trigger phase-selectively.
The phase-selective parameters are then effective for the following triggers:
•
Max. trigger
•
Min. trigger
•
dM/dt rise (/Filter time)
•
dM/dt drop (/Filter time)
Parameter: Max. active/Max. Trigger/Max. hysteresis
•
Default setting (_:9751:101) Max. active = yes
•
Default setting (_:9751:105) Max. (Non-phs sel.) = 1.200 A
•
Default setting (_:9751:118) Max. phs A = 1.200 A
•
Default setting (_:9751:119) Max. phs B = 1.200 A
•
Default setting (_:9751:120) Max. phs C = 1.200 A
•
Default setting (_:9751:113) Max. hysteresis = 0.980 p.u.
With the Max. active parameter, you activate the level trigger in order to monitor the current of the funda-
mental component and prevent it from exceeding the set values.
7.5.2.4
Fault Recorder
7.5 Trigger Functions 3-Phase
SIPROTEC 5, Fault Recorder, Manual 315
C53000-G5040-C018-5, Edition 11.2017