ABB Relion 670 series - Page 324

DirModeZ3-5
Non-directional
Forward
Reverse
DIR(n & mn)Z3-5
TRUE (1)
FWD(n & mn)
REV(n & mn)
FWD(n & mn) DIR(n & mn)Z1
FWD(n & mn) DIR(n & mn)Z2
REV(n & mn) DIR(n & mn)ZRV
ANSI12000137-1-en.vsd
ANSI12000137 V1 EN-US
Figure 160: Connection of directional signals to Zones
ZMAZx
NDZx
PHSA
AND
OR
ZMBZx
PHSB
AND
ZMCZx
PHSC
AND
ZMABZx
PHSAB
AND
ZMLBCZx
PHSBC
AND
ZMCAZx
PHSCA
AND
OR
DIRAZx
AND
DIRBZx
AND
AND
OR
AND
AND
AND
DIRCZx
DIRABZx
DIRBCZx
DIRCAZx
AZx
PGZx
BZx
CZx
PPZx
OR
OR
OR
ANSI12000140-1-en.vsd
ANSI12000140 V1 EN-US
Figure 161: Intermediate logic
Section 7 1MRK 502 066-UUS B
Impedance protection
318
Technical manual