[loinru12-060912-01.tif, 1, en_US]
Figure 7-132
Logic Diagram of the Inrush-Current Detection
Application and Setting Notes
Parameter: Operat.-range limit Imax
•
Recommended setting value (_:106) Operat.-range limit Imax = 7.5 A
With the parameter Operat.-range limit Imax, you can specify at which current the inrush-current
detection is blocked internally. Set the value to be greater than the RMS value of the maximum inrush
current of the transformer. A practicable value is 7.5 times the transformer rated current.
Parameter: Blocking with CWA
•
Recommended setting value = (_:111) Blocking with CWA = yes
Parameter Value
Description
yes
CWA process activated.
no
CWA process deactivated.
Parameter: Blocking with 2. harmonic
•
Recommended setting value (_:110) Blocking with 2. harmonic = yes
7.10.4
Protection and Automation Functions
7.10 Inrush-Current Detection
764 SIPROTEC 5, High-Voltage Bay Controller, Manual
C53000-G5040-C015-9, Edition 11.2017
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