ABB Relion 670 Series Technical Reference Manual page 813

1MRK505222-UUS C
13.3.5
Table 430: ZCRWPSCH (85) Group settings (basic)
Name Values (Range)
CurrRev Disabled
Enabled
tPickUpRev 0.000 - 60.000
tDelayRev 0.000 - 60.000
WEI Disabled
Echo
Echo & Trip
tPickUpWEI 0.000 - 60.000
VBase 0.05 - 2000.00
PU27PP 10 - 90
PU27PN 10 - 90
Technical reference manual
Name Type
IREV BOOLEAN
WEIBLK1 BOOLEAN
WEIBLK2 BOOLEAN
LOVBZ BOOLEAN
CBOPEN BOOLEAN
CRL BOOLEAN
Table 429: ZCRWPSCH (85) Output signals
Name Type
IRVL BOOLEAN
TRWEI BOOLEAN
TRWEI_A BOOLEAN
TRWEI_B BOOLEAN
TRWEI_C BOOLEAN
ECHO BOOLEAN
Setting parameters
Unit Step
- -
s 0.001
s 0.001
- -
s 0.001
kV 0.05
%VB 1
%VB 1
Scheme communication
Default Description
0 A signal that indicates a reverse fault has been
detected and activates current reverasl logic
0 Block of WEI logic
0 Block of WEI logic due to operation of other
protections that would effect a pilot trip or the detection
of reverse faults that will be tripped by an external device
0 Block of trip from WEI logic through the loss of voltage
(fuse-failure) function
0 Block of trip from WEI logic by an open breaker
0 POTT or Unblock carrier receive for WEI logic
Description
Operation of current reversal logic
Trip of WEI logic
Trip of WEI logic in phase A
Trip of WEI logic in phase B
Trip of WEI logic in phase C
A signal that indicates channel start (CS) by WEI logic
Default Description
Disabled Operating mode of Current Reversal Logic
0.020 Pickup time for current reversal logic
0.060 Time Delay to prevent Carrier send and local
trip
Disabled Operating mode of WEI logic
0.010 Coordination time for the WEI logic
400.00 Base setting for voltage level
70 Phase to Phase voltage for detection of fault
condition
70 Phase to Neutral voltage for detection of fault
condition
Section 13
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