Siemens SIPROTEC 5 User Manual

Parameter Value Description
no
The negative gradient of the RMS value of the current is not monitored.
If the gradient trigger does not operate phase-selectively, the set threshold value of the parameter -dM/dt
(Non-phs sel.) applies to all phases.
If the gradient trigger operates phase-selectively, set the threshold values for the gradient trigger separately
for each phase. Then, the parameters -dM/dt phs A, -dM/dt phs B, and -dM/dt phs C are effective.
The hysteresis is preset at the factory to 0.980 p.u. (equal to 2 %) of the parameter -dM/dt (Non-phs
sel.) and can be adjusted.
Application and Setting Notes - I0 Trigger (Zero-Sequence System)
Parameter: Mode
•
Default setting (_:9811:1) Mode = off
With the Mode parameter, you activate the trigger for normal operation (On) or for the test mode (Test).
Parameter Value Description
on
The function block I0 Trigger is activated and the voltage in the zero-
sequence system is monitored on the basis of the set trigger parameter.
off
The function block I0 Trigger is deactivated.
test
The function block I0 Trigger is activated for test purposes.
Parameter: Max. Trigger Active/Max. Trigger/Max. Trigger Hysteresis
•
Default setting (_:9811:101) Max. trigger active = yes
•
Default setting (_:9811:105) Max. trigger = 1.200 A
•
Default setting (_:9811:113) 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 zero-sequence system and to prevent it from exceeding the set values.
Parameter Value
Description
yes
The current in the zero-sequence system is monitored for overcurrent.
no
The current in the zero-sequence system is not monitored for overcurrent.
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 (_:9811:103) dM/dt rise active = no
•
Default setting (_:9811:107) dM/dt rise (/Filter time) = 0.300 A
•
Default setting (_:9811:115) dM/dt rise hysteresis = 0.980 p.u.
•
Default setting (_:9811:112) 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 zero-sequence system, using the set filtering time (input in periods).
Parameter Value
Description
yes
The positive gradient of the current in the zero-sequence system is moni-
tored.
no
The positive gradient of the current in the zero-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.
7.5.2.6
Fault Recorder
7.5 Trigger Functions 3-Phase
320 SIPROTEC 5, Fault Recorder, Manual
C53000-G5040-C018-5, Edition 11.2017

Siemens SIPROTEC 5 Specifications

General

Brand	Siemens
Model	SIPROTEC 5
Category	Controller
Language	English