4.8 Unbalanced Load Protection
461
7UT613/63x Manual
C53000-G1176-C160-2
Figure 4-15 Dropout time and trip time characteristics of the inverse time unbalanced load stage, as per IEC
Trip Time Curves acc. to ANSI
One of the tripping curves depicted in the figures 4-16 and 4-17 on the right-hand side may be
selected.
The tripping times for I
2
/I
2p
≥ 20 are identical to those for I
2
/I
2p
= 20.
Pickup Threshold Approx. 1.10· I
2p
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