Name
Type
Default
Description
BLKZ
BOOLEAN
0
Block of trip from WEI logic through the loss of voltage
(fuse-failure) function
CBOPEN
BOOLEAN
0
Block of trip from WEI logic by an open breaker
CRL
BOOLEAN
0
POTT or Unblock carrier receive for WEI logic
Table 338:
ZCRWPSCH (85) Output signals
Name
Type
Description
IRVL
BOOLEAN
Operation of current reversal logic
TRWEI
BOOLEAN
Trip of WEI logic
ECHO
BOOLEAN
A signal that indicates channel start (CS) by WEI logic
12.2.5
Settings
Table 339:
ZCRWPSCH (85) Group settings (basic)
Name
Values (Range)
Unit
Step
Default
Description
CurrRev
Disabled
Enabled
-
-
Disabled
Operating mode of Current Reversal Logic
tPickUpRev
0.000 - 60.000
s
0.001
0.020
Pickup time for current reversal logic
tDelayRev
0.000 - 60.000
s
0.001
0.060
Time Delay to prevent Carrier send and local
trip
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 340:
ZCRWPSCH (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
Section 12
1MRK 506 335-UUS A
Scheme communication
504
Technical manual
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