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Siemens SIPROTEC 7SD80 - Page 87

Siemens SIPROTEC 7SD80
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Functions
2.4 Backup Overcurrent
SIPROTEC, 7SD80, Manual
E50417-G1140-C474-A1, Release date 09.2011
87
Figure 2-31 Logic diagram of the 67 TOC element (directional, inverse time overcurrent protection) - example for IEC
characteristic

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