Application And Setting Notes I1 Trigger (Positive-Sequence System) - Siemens SIPROTEC 5 Manual

7.5.2.7

Application and Setting Notes I1 Trigger (Positive-Sequence System)

Parameter: Mode
•
Default setting (_:9841:1) Mode = off
With the Mode parameter, you activate the trigger for normal operation (On) or for the test mode (Test).
Parameter Value
on
off
test
Parameter: Max. Trigger Active/Max. Trigger/Max. Trigger Hysteresis
•
Default setting (_:9841:101) Max. trigger active = yes
•
Default setting (_:9841:105) Max. trigger = 1.200 A
•
Default setting (_:9841:113) Max. trigger hysteresis = 0.980 p.u.
With the Max. trigger active parameter, you activate the level trigger in order to monitor the current in
the positive-sequence system and to prevent it from exceeding the set values.
Parameter Value
yes
no
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 (_:9841:102) Min. trigger active = yes
•
Default setting (_:9841:106) Min. trigger = 0.800 A
•
Default setting (_:9841:114) Min. trigger hysteresis = 1.020 p.u.
With the Min. trigger active parameter, you activate the level trigger in order to monitor the current in
the positive-sequence system and to prevent it from dropping below the set values.
Parameter Value
yes
no
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 (_:9841:103) dM/dt rise active = no
•
Default setting (_:9841:107) dM/dt rise (/Filter time) = 0.300 A
•
Default setting (_:9841:115) dM/dt rise hysteresis = 0.980 p.u.
•
Default setting (_:9841:112) Filter time = 2 periods
With the dM/dt rise active parameter, you activate the gradient trigger in order to monitor the positive
gradients of the current in the positive-sequence system using the set filtering time (input in periods).
SIPROTEC 5, Fault Recorder, Manual
C53000-G5040-C018-5, Edition 11.2017
Description
The function block I1 Trigger is activated and the voltage in the positive-
sequence system is monitored on the basis of the set trigger parameters.
The function block I1 Trigger is deactivated.
The function block I1 Trigger is activated for test purposes.
Description
The current in the positive-sequence system is monitored for overcurrent.
The current in the positive-sequence system is not monitored for overcur-
rent.
Description
The current in the positive-sequence system is monitored for undercurrent.
The current in the positive-sequence system is not monitored for undercur-
rent.
Fault Recorder
7.5 Trigger Functions 3-Phase
321