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Siemens SIPROTEC 7SD80 - Page 135

Siemens SIPROTEC 7SD80
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Functions
2.9 Frequency Protection 81 (Optional)
SIPROTEC, 7SD80, Manual
E50417-G1140-C474-A1, Release date 09.2011
135
Figure 2-52 Logic diagram of frequency protection for 50 Hz rated frequency

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