ANSI09000889-1-en.vsd
NDIR_A
NDIR_B
NIDR_C
NDIR_AB
NDIR_BC
NDIR_CA
OR
OR
OR
OR
AND
AND
AND
AND
BLK
PICKUP
PU_C
PU_B
PU_A
15ms
0
15ms
0
15ms
0
15ms
0
ANSI09000889 V1 EN
Figure 81: Composition of pickup signals in non-directional operating mode
Results of the directional measurement enter the logic circuits, when the zone operates
in directional (forward or reverse) mode, as shown in figure 82.
1MRK505222-UUS C Section 6
Impedance protection
187
Technical reference manual
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