Siemens SIPROTEC 5 Manual page 303

Parameter Value
no
yes
Parameter: Max. active/Max. Trigger./Max. hysteresis
•
Default setting (_:9601:101) Max. active = yes
•
Default setting (_:9601:105) Max. (Non-phs sel.) = 120.000 V
•
Default setting (_:9601:118) Max. phs A(AB) = 120.000 V
•
Default setting (_:9601:119) Max. phs B(BC) = 120.000 V
•
Default setting (_:9601:120) Max. phs C(CA) = 120.000 V
•
Default setting (_:9601:113) Max. hysteresis = 0.980 p.u.
With the Max. active parameter, you activate the level trigger in order to monitor the RMS value of the
voltage and to 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.
Parameter: (_:9601:102) Min. active/Min. Trigger/Min. hysteresis
•
Default setting (_:9601:102) Min. active = yes
•
Default setting (_:9601:106) Min. (Non-phs sel.) = 80.000 V
•
Default setting (_:9601:121) Min. phs A(AB) = 80.000 V
•
Default setting (_:9601:122) Min. phs B(BC) = 80.000 V
•
Default setting Min. phs C(CA) = 80.000 V
•
Default setting (_:9601:114) Min. hysteresis = 1.020 p.u.
With the Min. active parameter, you activate the level trigger in order to monitor the RMS value of the
voltage and to prevent it from dropping below the set value.
SIPROTEC 5, Fault Recorder, Manual
C53000-G5040-C018-5, Edition 11.2017
Description
You do not adjust the threshold values of the level triggers and of 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 of the level triggers and of the gradient
trigger phase-selectively.
The phase-selective parameters are then effective for the following triggers:
•
Max. trigger
•
Min. trigger
•
dM/dt rise (/Filter time)
•
dM/dt drop (/Filter time)
Description
The RMS value of the voltage is monitored for overvoltage.
The RMS value of the voltage is not monitored for overvoltage.
Fault Recorder
7.5 Trigger Functions 3-Phase
303