Siemens SIPROTEC 5 Manual page 300

Fault Recorder
7.5 Trigger Functions 3-Phase
Parameter Value
phase-to-ground
phase-to-phase
Parameter: Phase-selective
•
Default setting (_:9571:117) 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
no
yes
Parameter: Max. active/Max. Trigger/Max. hysteresis
•
Default setting (_:9571:101) Max. active = yes
•
Default setting (_:9571:105) Max. (Non-phs sel.) = 120.000 V
•
Default setting (_:9571:118) Max. phs A(AB) = 120.000 V
•
Default setting (_:9571:119) Max. phs B(BC) = 120.000 V
•
Default setting (_:9571:120) Max. phs C(CA) = 120.000 V
•
Default setting (_:9571:113) Max. hysteresis = 0.980 p.u.
With the Max. active parameter, you activate the level trigger in order to monitor the voltage of the funda-
mental component and prevent it from exceeding the set values.
Parameter Value
yes
no
If the Max. trigger does not operate phase-selectively, the set threshold value of the parameter Max.
(Non-phs sel.) applies to all phases.
If the Max. trigger operates phase-selectively, set the threshold values for the Max. trigger separately
for each phase. Then, the parameters Max. phs A(AB), Max. phs B(BC), and Max. phs C(CA) are
effective.
The hysteresis is preset at the factory to 0.980 p.u. (equal to 2 %) of the parameter Max. (Non-phs sel.)
and can be adjusted.
300
Description
The triggering is done on the basis of phase-to-ground variables.
The triggering is done on the basis of phase-to-phase variables.
Description
You do not adjust the threshold values for the level trigger and for 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.
You adjust the threshold values for the level triggers and for the gradient
trigger phase-selectively.
The phase-selective parameters are then in effect for the following triggers:
•
Max. trigger
•
Min. trigger
•
dM/dt rise (/Filter time)
•
dM/dt drop (/Filter time)
Description
The voltage of the fundamental component is monitored for overvoltage.
The voltage of the fundamental component is not monitored for over-
voltage.
SIPROTEC 5, Fault Recorder, Manual
C53000-G5040-C018-5, Edition 11.2017