Trip Time Curves acc. to IEC
One of the tripping characteristics displayed on the right-hand side of Figure 4-14 and Figure 4-15 can be
selected.
The trip times for Ι
2
/Ι
2p
≥ 20 are identical to those for Ι
2
/Ι
2p
= 20.
Pickup Threshold
approx. 1.10· Ι
2p
Reset Curves with Disk Emulation according to IEC
For illustrations of possible reset time characteristics see
Figure 4-14 and Figure 4-15 on the lefthand side.
The dropout time characteristics apply to the range 0.05 ≤ (Ι
2
/Ι
2p
) ≤ 0.90
Technical Data
4.8 Unbalanced Load Protection
434 SIPROTEC 4, 7UT6x, Manual
C53000-G1176-C230-5, Edition 09.2016
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