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[logikdiagramm-frequenzschutz-wlk-190802, 1, en_US]
Figure 2-52
Setting Notes
2.9.2
General
Frequency protection is only in effect and accessible if address 136 81 O/U is set to Enabled during configu-
ration of protective functions. If the function is not required, set Disabled.
The frequency protection function features 4 frequency elements f1 to f4 each of which can function as over-
frequency element or underfrequency element. Each zone can be set active or inactive. This is set in
addresses:
•
3601 81 O/U FREQ. f1 for frequency element f1,
•
3611 81 O/U FREQ. f2 for frequency element f2,
•
3621 81 O/U FREQ. f3 for frequency element f3,
•
3631 81 O/U FREQ. f4 for frequency element f4.
The following 3 options are available:
SIPROTEC 4, 7SD80, Manual
E50417-G1100-C474-A2, Edition 02.2018
Logic diagram of frequency protection for 50 Hz rated frequency
Functions
2.9 Frequency Protection (optional) 81
125
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