Name
Values (Range)
Unit
Step
Default
Description
WEI
Disabled
Echo
Echo & Trip
-
-
Disabled
Operating mode of WEI logic
tPickUpWEI
0.000 - 60.000
s
0.001
0.010
Coordination time for the WEI logic
PU27PP
10 - 90
%VB
1
70
Phase to Phase voltage for detection of fault
condition
PU27PN
10 - 90
%VB
1
70
Phase to Neutral voltage for detection of fault
condition
Table 345:
ZCWSPSCH (85) Non group settings (basic)
Name
Values (Range)
Unit
Step
Default
Description
GlobalBaseSel
1 - 6
-
1
1
Selection of one of the Global Base Value
groups
12.3.6
Operation principle
12.3.6.1
Current reversal logic
The current reversal logic uses a reverse zone connected to the input IREV to recognize
the fault on the parallel or any other outgoing line in any of the phases. When the reverse
zone has been activated for a certain settable time
tPickUpRev
it prevents sending of a
communication signal and activation of trip signal for a predefined time
tDelayRev
. This
makes it possible for the receive signal to reset before the trip signal is activated due to the
current reversal by the forward directed zone, see figure
ANSI05000122-2-en.vsd
IREV
IFWD
IRVL
AND
0
10ms
0-tPickUpRev
0
0-tDelayRev
0
0-tPickUpRev
0
ANSI10000259 V2 EN
Figure 239:
Current reversal logic
The preventing of sending the send signal CS and activating of the TRIP is carried out by
connecting the IRVL signal to the inputs BLKTR and BLKCS in ZCPSCH (85).
The function has an internal 10 ms drop-off timer which secure that the current reversal
logic will be activated for short input signals even if the pick-up timer is set to zero.
Section 12
1MRK 506 335-UUS A
Scheme communication
510
Technical manual
Содержание REL650 series
Страница 1: ...Relion 650 series Line distance protection REL650 ANSI Technical manual ...
Страница 2: ......
Страница 42: ...36 ...
Страница 48: ...42 ...
Страница 58: ...52 ...
Страница 68: ...62 ...
Страница 74: ...68 ...
Страница 194: ...188 ...
Страница 534: ...528 ...
Страница 580: ...574 ...
Страница 722: ...716 ...
Страница 792: ...786 ...
Страница 855: ...849 ...