Siemens SIPROTEC 7SD610 - Setting Notes

2.12 Frequency Protection (optional)
173
7SD610 Manual
C53000-G1176-C145-4
Figure 2-60 Logic diagram of the frequency protection
2.12.2 Setting Notes
General Frequency protection is only in effect and accessible if address 136 FREQUENCY
Prot. is set to Enabled during configuration of protective functions. If the function is
not required, Disabled is to be set.
The frequency protection function features 4 frequency stages f1 to f4 each of which
can function as overfrequency stage or underfrequency stage. Each stage can be set
active or inactive. This is set in addresses:
• 3601 O/U FREQ. f1 for frequency stage f1,
• 3611 O/U FREQ. f2 for frequency stage f2,
• 3621 O/U FREQ. f3 for frequency stage f3,
• 3631 O/U FREQ. f4 for frequency stage f4,
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