Zone Tripping Logic - ABB REL650 series Technical Manual

1MRK 506 335-UUS A
6.1.6.9
Technical manual
The PHSEL input signal represents a connection of six different integer values from Phase
selection with load encroachment, FDPSPDIS or FMPSPDIS (21) within the IED, which
are converted within the zone measuring function into corresponding boolean expressions
for each condition separately. Input signal PHSEL is connected to FDPSPDIS or
FMPSPDIS (21) function output STCNDZI.
MhoDirMode = offset
OR
DirMode = Non-Dir
PHSEL
DIRCND
LoadEnchMode=
Enabled/Disabled
T
LDCND
F
TRUE
BlinderModeZx=
Enabled/Disabled
T
BLDCND
F
TRUE
MhoDirMode =
Directional
AND
DirMode =
Forward/Reverse
ANSI09000243 V4 EN
Figure 49: Conditioning by a group functional input signal PHSEL, external start
condition

Zone tripping logic

Zone timer handler is a special feature provided in ZQMPDIS (21) function. Different
signals are available to be used to start the timers for the zones. This setting can be used
to get better time co-ordination between different zones of distance protection. Use
TimerSelZx (where x=1,2,3,4,5) setting to enable the timer selection for the zone. The
internal logic diagram of the feature is shown in Figure 50.
AND
T
AND
F
AND
BLKZ
BLOCK
AND
STAG
AND
STBG
AND
STCG
AND
STAB
AND
STBC
AND
STCA
Section 6
Impedance protection
Release
AND
OR
STPG
OR
STAG
STA
STAB
OR
STAC
STBG
STB
STAB
OR
STBC
STCG
STC
STBC
OR
STAC
PICKUP
OR
STPP
OR
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