Parameter Value
Description
yes
Harmonic analysis process activated.
no
Harmonic analysis process deactivated.
i
i
NOTE
Make sure that at least one process is activated. Siemens recommends retaining the advised setting values.
Parameter: 2nd harmonic content
•
Recommended setting value
(_:102) 2nd harmonic content
=
15 %
With the parameter
2nd harmonic content
, you can specify the pickup value of the harmonic anal-
ysis function. The setting value of 15 % is practicable for most transformers.
Parameter: Cross-blocking
•
Recommended setting value
(_:112) Cross-blocking
=
no
Parameter Value
Description
no
Through the CWA process working in parallel in the inrush-current detec-
tion, the function is not activated as standard.
yes
If a subfunction of the inrush-current detection is identified in the course of
the closure trials during commissioning, set the parameter
Cross-
blocking
to
yes
.
Parameter: Cross-blocking time
•
Default setting
(_:109) Cross-blocking time
=
0.06 s
You define the duration of this blocking with the
Cross-blocking time
parameter. The default
setting of
0.06 s
(about 3 periods) has proven practicable. Set the time as short as possible and check
the value during the closure trials. The parameter
Cross-blocking time
is inactive at
Cross-
blocking
=
no
.
Parameter: Start flt.rec
•
Default setting
(_:114) Start flt.rec
=
yes
With the
Start flt.rec
parameter, you determine whether a fault record should be started upon
pickup of the inrush-current detection. The following settings are possible:
Parameter Value
Description
no
No fault recording starts with pickup.
yes
The fault recording starts with pickup. When the protection function is
blocked by the inrush-current detection, a fault recording is started never-
theless.
Settings
Addr.
Parameter
C
Setting Options
Default Setting
Inrush detect.
_:1
Inrush detect.:Mode
•
off
•
on
•
test
on
7.10.5
Protection and Automation Functions
7.10 Inrush-Current Detection
SIPROTEC 5, High-Voltage Bay Controller, Manual
765
C53000-G5040-C015-9, Edition 11.2017
Summary of Contents for 6MD85
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