reverse direction. The zone measurement function filter out the relevant signals on the
DIRCND input depending on the setting of the parameter
OperationDir
. It shall be
configured to the DIRCND output on the Directional impedance element for mho
characteristic (ZDMRDIR,21D) function.
en06000408_ansi.vsd
AND
AND
AND
AG
BG
CG
PHSEL
NDIR_A
NDIR_B
NDIR_C
NDIR_G
AND
BLOCK
LOVBZ
PHPUND
BLK
OR
OR
OR
ANSI06000408 V1 EN
Figure 136:
Conditioning by a group functional input signal PHSEL
Composition of the phase pickup signals for a case, when the zone operates in a non-
directional mode, is presented in figure
en06000409_ansi.vsd
NDIR_A
NDIR_B
NDIR_C
OR
AND
AND
AND
AND
BLK
PICKUP
PU_C
PU_B
PU_A
15 ms
0
15 ms
0
15 ms
0
15 ms
0
ANSI06000409 V1 EN
Figure 137:
Composition of pickup signals in non-directional operating mode
1MRK505222-UUS C
Section 6
Impedance protection
271
Technical reference manual
Summary of Contents for Relion 670 series
Page 1: ...Relion 670 series Line differential protection RED670 ANSI Technical reference manual...
Page 2: ......
Page 40: ...34...
Page 50: ...44...
Page 60: ...54...
Page 126: ...120...
Page 384: ...378...
Page 496: ...490...
Page 556: ...550...
Page 602: ...596...
Page 620: ...614...
Page 794: ...788...
Page 864: ...858...
Page 988: ...982...
Page 998: ...992...
Page 1084: ...1078...
Page 1164: ...1158...
Page 1168: ...1162...
Page 1220: ...1214...
Page 1230: ...1224...
Page 1231: ...1225...