ANSI05000201-3-en.vsd
INDIR_A
DFW_A
AND
AND
INDIR_AB
DFW_AB
AND
INDIR_CA
DFW_CA
AND
INDIR_B
DFW_B
AND
INDIR_AB
DFW_BC
AND
INDIR_BC
AND
INDIR_C
DFW_C
AND
INDIR_BC
AND
INDIR_CA
OR
OR
OR
OR
AND
AND
AND
AND
AND
AND
AND
OR
OR
FWD_IPH
FWD_A
FWD_G
FWD_B
FWD_2PH
FWD_C
FWD_3PH
OR
FWD_PP
15 ms
0
15 ms
0
15 ms
0
15 ms
0
15 ms
0
15 ms
0
15 ms
0
15 ms
0
0
15 ms
0
15 ms
ANSI05000201 V3 EN
Figure 181: Composition of phase selection signals for forward direction
Figure114 presents the composition of output signals TRIP and START, where internal
signals STNDPP, STFWPP and STRVPP are the equivalent to internal signals
STNDPE, STFWPE and STRVPE, but for the phase-to-phase loops.
Section 6 1MRK505222-UUS C
Impedance protection
342
Technical reference manual
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