Parameter Value Description
yes
Harmonic analysis process activated.
no
Harmonic analysis process deactivated.
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
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