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or T 3I0p Add may be selected, which is added to the inverse time. The possible characteristics are shown
in the Technical Data.
The following figure shows the logic diagram. The setting parameter addresses of the IEC characteristics are
shown by way of an example. In the setting information (Section 2.16.3) the different setting addresses are
elaborated upon.
Figure 2-154
Logic diagram of the I
1
)
Output indications associated with the pickup signals are listed in Table 2-12
2
)
Output indications associated with the trip signals are listed in Table 2-13
SIPROTEC, 7SD5, Manual
C53000-G1176-C169-5, Release date 02.2011
stage (inverse time overcurrent protection) - example of IEC curve
P
2.16 Backup Time Overcurrent Protection
Functions
305
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