Siemens SIPROTEC 5 - Settings

Parameter Value Description
yes
The current of the fundamental component is monitored for undercurrent.
no
The current of the fundamental component is not monitored for undercur-
rent.
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 (_:9751:103) dM/dt rise active = no
•
Default setting (_:9751:107) dM/dt rise (/Filter time) = 0.300 A
•
Default setting (_:9751:115) dM/dt rise hysteresis = 0.980 p.u.
•
Default setting (_:9751:112) 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 of the fundamental component, using the set filtering time (input in periods).
Parameter Value Description
yes
The positive gradient of the current of the fundamental component is moni-
tored.
no
The positive gradient of the current of the fundamental component is not
monitored.
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.
Parameter: dM/dt Drop Active - dM/dt Drop (/Filter Time) - dM/dt Drop Hysteresis - Filter Time
•
Default setting (_:9751:104) dM/dt drop active = no
•
Default setting (_:9751:108) dM/dt drop (/Filter time) = 0.300 A
•
Default setting (_:9751:116) dM/dt drop hysteresis = 0.980 p.u.
•
Default setting (_:9751:112) Filter time = 2 periods
With the dM/dt drop active parameter, you activate the gradient trigger in order to monitor the negative
gradients of the current of the fundamental component, using the set filtering time (input in periods).
Parameter Value
Description
yes
The negative gradient of the current of the fundamental component is
monitored.
no
The negative gradient of the current of the fundamental component is not
monitored.
The hysteresis is preset at the factory to 0.980 p.u. (equal to 2 %) of the parameter dM/dt drop (/Filter
time) and can be adjusted.
Settings
Addr.
Parameter C Setting Options Default Setting
Trig. I RMS 1
_:9781:1 Trig. I RMS 1:Mode
•
off
•
on
•
test
off
_:9781:101 Trig. I RMS 1:Max.
trigger active
•
no
•
yes
yes
7.4.2.6
Fault Recorder
7.4 Trigger Functions 1-Phase
282 SIPROTEC 5, Fault Recorder, Manual
C53000-G5040-C018-5, Edition 11.2017