ABB REL 501-C1 2.5 Technical Reference Manual page 92

80
General fault criteria (GFC)
NO FILTER ACTIVE = 1
ST3U0
STUL1
STUL2
STUL3
IRELPE-cont.
GFCN
GFCL1N
GFCL2N
GFCL3N
GFCL1L2
GFCL2L3
GFCL3L1
IRELPP-cont.
Figure 33: Composition of non-directional GFC signals with phase preference logic
≥1
&
&
&
≥1
&
&
&
&
&
&
&
&
Line distance
15 ms
GFC--STNDPE
≥1
t
INDL1N - cont.
INDL2N - cont.
INDL3N - cont.
≥1
15 ms
GFC--STNDL1
≥1
t
≥1
15 ms
GFC--STNDL2
≥1
t
≥1
15 ms
GFC--STNDL3
≥1
t
INDL1L2 - cont.
INDL2L3 - cont.
INDL3L1 - cont.
Chapter 4
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