Settings - Siemens 7SJ82 Manual

NOTE
i
i
The Hold mode 1p dead time setting is only available in devices with 1-/3-pole tripping. In devices
with 3-pole tripping, this setting does not apply.
Parameter: Stabiliz. w. phase current
•
Recommended setting value (_:8101:111) Stabiliz. w. phase current = 10 %
In order to avoid unwanted pickups and tripping, the negative-sequence system current stage is stabilized
with the phase currents.
More information can be found in chapter
The threshold value increases as the phase currents increase.
You can change the stabilization factor (= gradient) via the Stabiliz. w. phase current parameter.
Siemens recommends a default setting of 10 % under normal operations.
Parameter: Threshold
•
Default setting (_:8101:3) Threshold = 1.5 A
Define the pickup value corresponding to the application. In doing so, for the time-graded stages, the setting
for the superordinate and subordinate stages must be taken into account in the grading chart.
With a very sensitive setting, you must make sure that the negative-sequence system current does not lead to
undesired response of the stage due to unbalance (for example non-twisted line).
Parameter: Operate delay
•
Default setting (_:8101:6) Operate delay = 0.30 s
The tripping delay (time delay) to be set is derived from the time-grading schedule that has been prepared for
the system.
When selecting the current and time setting, pay attention to whether the stage must work dependent on the
direction.

Settings

6.18.6
Addr.
General
_:2311:101
_:2311:102
_:2311:107
_:2311:106
Definite-T 1
_:8101:1
_:8101:2
SIPROTEC 5, Overcurrent Protection, Manual
C53000-G5040-C017-8, Edition 07.2017
6.18.3 Function
Parameter C
General:Angle forward α
General:Angle forward β
General:Min. neg.-seq.
voltage V2
General:Min. neg.-seq. 1 A @ 100 Irated 0.030 A to 10.000 A
current I2
5 A @ 100 Irated 0.15 A to 50.00 A
1 A @ 50 Irated
5 A @ 50 Irated
1 A @ 1.6 Irated
5 A @ 1.6 Irated
Definite-T 1:Mode
Definite-T 1:Operate &
flt.rec. blocked
Protection and Automation Functions
6.18 Directional Negative-Sequence Protection
Description.
Setting Options
0 ° to 360 °
0 ° to 360 °
0.150 V to 34.000 V
0.030 A to 10.000 A
0.15 A to 50.00 A
0.001 A to 1.600 A
0.005 A to 8.000 A
•
off
•
on
•
test
•
no
•
yes
Default Setting
338 °
122 °
1.213 V
0.050 A
0.25 A
0.050 A
0.25 A
0.050 A
0.250 A
off
no
649