Table 433:
ZCLCPLAL Output signals
Name
Type
Description
TRZE
BOOLEAN
Trip by zone extension
TRLL
BOOLEAN
Trip by loss of load
13.4.5
Setting parameters
Table 434:
ZCLCPLAL Group settings (basic)
Name
Values (Range)
Unit
Step
Default
Description
Operation
Disabled
Enabled
-
-
Disabled
Disable/Enable Operation
IBase
1 - 99999
A
1
3000
Base setting for current values
LoadCurr
1 - 100
%IB
1
10
Load current before disturbance in % of IBase
LossOfLoad
Disabled
Enabled
-
-
Disabled
Enable/Disable operation of Loss of load.
ZoneExtension
Disabled
Enabled
-
-
Disabled
Enable/Disable operation of Zone extension
MinCurr
1 - 100
%IB
1
5
Lev taken as curr loss due to remote CB trip
in % of IBase
tLowCurr
0.000 - 60.000
s
0.001
0.200
Time delay on pick-up for MINCURR value
tLoadOn
0.000 - 60.000
s
0.001
0.000
Time delay on pick-up for load current release
tLoadOff
0.000 - 60.000
s
0.001
0.300
Time delay on drop off for load current release
13.5
Scheme communication logic for residual overcurrent
protection ECPSCH (85)
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Scheme communication logic for
residual overcurrent protection
ECPSCH
-
85
13.5.1
Introduction
To achieve fast fault clearance of ground faults on the part of the line not covered by
the instantaneous step of the residual overcurrent protection, the directional residual
overcurrent protection can be supported with a logic that uses communication channels.
In the directional scheme, information of the fault current direction must be transmitted
to the other line end. With directional comparison, a short operate time of the
1MRK505222-UUS C
Section 13
Scheme communication
811
Technical reference manual
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