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: dM/dt Rise Active - dM/dt Rise (/Filter Time) - dM/dt Rise Hysteresis - Filter Time
•
Default setting (_:9691:103) dM/dt rise active = no
•
Default setting (_:9691:107) dM/dt rise (/Filter time) = 11.547 V
•
Default setting (_:9691:115) dM/dt rise hysteresis = 0.980 p.u.
•
Default setting (_:9691:112) 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 voltage in the negative-sequence system using the set filtering time (input in periods).
Parameter Value Description
yes
The positive gradient of the voltage in the negative-sequence system is
monitored.
no
The positive gradient of the voltage in the negative-sequence system 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.
Settings
Addr.
Parameter C Setting Options Default Setting
General
_:9571:1 Trig. V fund 1:Mode
•
off
•
on
•
test
off
_:9571:9 Trig. V fund 1:Measured
value
•
phase-to-ground
•
phase-to-phase
phase-to-phase
_:9571:117 Trig. V fund 1:Phase-
selective
•
no
•
yes
no
_:9571:112 Trig. V fund 1:Filter time 2 cycles to 250 cycles 2 cycles
Max. trigger
_:9571:101 Trig. V fund 1:Max.
active
•
no
•
yes
yes
_:9571:105 Trig. V fund 1:Max.
(Non-phs sel.)
0.300 V to 340.000 V 120.000 V
_:9571:118 Trig. V fund 1:Max. phs
A(AB)
0.300 V to 340.000 V 120.000 V
_:9571:119 Trig. V fund 1:Max. phs
B(BC)
0.300 V to 340.000 V 120.000 V
_:9571:120 Trig. V fund 1:Max. phs
C(CA)
0.300 V to 340.000 V 120.000 V
_:9571:113 Trig. V fund 1:Max.
hysteresis
0.900 p.u. to 0.990 p.u. 0.980 p.u.
Min. trigger
_:9571:102 Trig. V fund 1:Min. active
•
no
•
yes
yes
_:9571:106 Trig. V fund 1:Min. (Non-
phs sel.)
0.300 V to 340.000 V 80.000 V
_:9571:121 Trig. V fund 1:Min. phs
A(AB)
0.300 V to 340.000 V 80.000 V
7.5.1.9
Fault Recorder
7.5 Trigger Functions 3-Phase
308 SIPROTEC 5, Fault Recorder, Manual
C53000-G5040-C018-5, Edition 11.2017
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