Functions
2.9 Backup Time Overcurrent Protection
SIPROTEC, 7SD610, Manual
C53000-G1176-C145-6, Release date 02.2011
103
Figure 2-39 Logic diagram of the I>> stage
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
Definite time overcurrent stage I>
The logic of the overcurrent stages I> is structured identically to the I>> stages. In all references, Iph>> must
merely be replaced by Iph> or 3I0>> PICKUP by 3I0>. The parameter 2624 I> Telep/BI is set to NO by
default. In all other respects, figure 2-39 applies.
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