ABB Relion 650 Series Technical Manual page 104

Section 5
Impedance protection
INDIR_A
DRV_A
INDIR_AB
DRV_AB
INDIR_CA
DRV_CA
INDIR_B
DRV_B
INDIR_AB
INDIR_BC
DRV_BC
INDIR_C
DRV_C
INDIR_BC
INDIR_CA
ANSI10000546 V1 EN-US
Figure 52: Composition of phase selection signals for reverse direction
98
AND
AND OR
AND
OR
AND
AND OR
INDIR_A
AND INDIR_B
INDIR_C
INDIR_AB
INDIR_BC
AND
INDIR_CA
AND OR
AND
OR
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15 ms
t
15 ms
t
15 ms
t
Bool to
integer
15 ms
t
15 ms
t
1MRK 506 326-UUS B
REV_A
REV_G
REV_B
STCNDZI
REV_C
REV_PP
Composition_of_phase_s
election_signals_for_rever
se_direction%3DANSI100
00546%3D1%3Den%3DO
riginal[1].vsd
ANSI10000546
Line distance protection REL650
Technical manual