The hysteresis is preset at the factory to 0.980 p.u. (equal to 2 %) of the parameter dM/dt rise (/Filter
time) and can be adjusted.
Application and Setting Notes - V1 Trigger (Positive-Sequence System)
Parameter: Mode
•
Default setting (_:9661:1) Mode = off
With the Mode parameter, you activate the trigger for normal operation (On) or the test mode (Test).
Parameter Value Description
on
The function block V1 Trigger is activated and the voltage in the positive-
sequence system is monitored on the basis of the set trigger parameter.
off
The function block V1 Trigger is deactivated.
test
The function block V1 Trigger is activated for test purposes.
Parameter: Max. Trigger Active/Max. Trigger/Max. Trigger Hysteresis
•
Default setting (_:9661:101) Max. trigger active = yes
•
Default setting (_:9661:105) Max. trigger = 69.284 V
•
Default setting (_:9661:113) Max. trigger hysteresis = 0.980 p.u.
With the Max. trigger active parameter, you activate the level trigger in order to monitor the voltage in
the positive-sequence system and to prevent it from exceeding the set values.
Parameter Value
Description
yes
The voltage in the positive-sequence system is monitored for overvoltage.
no
The voltage in the positive-sequence system is not monitored for over-
voltage.
The hysteresis is preset at the factory to 0.980 p.u. (equal to 2 %) of the parameter Max. trigger and can
be adjusted.
Parameter: Min. Trigger Active/Min. Trigger/Min Trigger Hysteresis
•
Default setting (_:9661:102) Min. trigger active = yes
•
Default setting (_:9661:106) Min. trigger = 46.189 V
•
Default setting (_:9661:114) Min. trigger hysteresis = 1.020 p.u.
With the Min. trigger active parameter, you activate the level trigger in order to monitor the voltage in
the positive-sequence system and to prevent ut from dropping below the set value.
Parameter Value
Description
yes
The voltage in the positive-sequence system is monitored for undervoltage.
no
The voltage in the positive-sequence system is not monitored for under-
voltage.
The hysteresis is preset at the factory to 1.020 p.u. (equal to 2 %) of the parameter Min. trigger and can
be adjusted.
Parameter: dM/dt Rise Active - dM/dt Rise (/Filter Time) - dM/dt Rise Hysteresis - Filter Time
•
Default setting (_:9661:103) dM/dt rise active = no
•
Default setting (_:9661:107) dM/dt rise (/Filter time) = 11.547 V
•
Default setting (_:9661:115) dM/dt rise hysteresis = 0.980 p.u.
•
Default setting (_:9661:112) Filter time = 2 periods
7.5.1.7
Fault Recorder
7.5 Trigger Functions 3-Phase
306 SIPROTEC 5, Fault Recorder, Manual
C53000-G5040-C018-5, Edition 11.2017