2.9 Backup Time Overcurrent Protection
107
7SD610 Manual
C53000-G1176-C145-4
Figure 2-42 Logic diagram of the I
P
stage (directional, inverse time overcurrent protection), for example IEC character-
istics
1
) Output indications associated with the pickup signals are listed in Table 2-3
2
) Output indications associated with the trip signals are listed in Table 2-4
3
) The indications „O/C L2 forward“, „O/C L3 forward“, „O/C L2 reverse“, „O/C L3 reverse“ have
not been represented in the Figure, however, they are reported if necessary.
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