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.
ANSI09000243-4-en.vsd
T
F
T
F
LDCND
BLDCND
TRUE
TRUE
PHSEL
DIRCND
T
F
BLKZ
Release
STAG
STBG
STCG
STAB
STCA
STBC
STA
STB
STC
STPP
STAG
STAB
STAC
STBG
STAB
STBC
STCG
STBC
STAC
BLOCK
STPG
DirMode = Non-Dir
MhoDirMode = offset
MhoDirMode =
Directional
DirMode =
Forward/Reverse
PICKUP
OR
AND
AND
AND
AND
AND
AND
AND
AND
AND
AND
AND
OR
OR
OR
OR
OR
OR
OR
BlinderModeZx=
Enabled/Disabled
LoadEnchMode=
Enabled/Disabled
ANSI09000243 V4 EN
Figure 49:
Conditioning by a group functional input signal PHSEL, external start
condition
6.1.6.9
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
.
1MRK 506 335-UUS A
Section 6
Impedance protection
123
Technical manual
Содержание REL650 series
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