Siemens SIPROTEC 7SC80 Series Manual page 256

Feeder automation controller
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Technical Data
4.8 Negative Sequence Protection 46-TOC (Inverse Time Characteristic)
Figure 4-3
Dropout time and trip time characteristics of the inverse time unbalanced load stage, acc. to ANSI
256
SIPROTEC, 7SC80, Manual
E50417-G1140-C486-A1, Release date 12.2011

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