ABB Relion 670 Series Technical Reference Manual page 817

1MRK505222-UUS C
13.4.5
Table 434: ZCLCPLAL Group settings (basic)
Name Values (Range)
Operation Disabled
Enabled
IBase 1 - 99999
LoadCurr 1 - 100
LossOfLoad Disabled
Enabled
ZoneExtension Disabled
Enabled
MinCurr 1 - 100
tLowCurr 0.000 - 60.000
tLoadOn 0.000 - 60.000
tLoadOff 0.000 - 60.000
13.5
13.5.1
Technical reference manual
Table 433: ZCLCPLAL Output signals
Name Type
TRZE BOOLEAN
TRLL BOOLEAN
Setting parameters
Unit Step
- -
A 1
%IB 1
- -
- -
%IB 1
s 0.001
s 0.001
s 0.001
Scheme communication logic for residual overcurrent
protection ECPSCH (85)
Function description
Scheme communication logic for
residual overcurrent protection
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
Scheme communication
Description
Trip by zone extension
Trip by loss of load
Default Description
Disabled Disable/Enable Operation
3000 Base setting for current values
10 Load current before disturbance in % of IBase
Disabled Enable/Disable operation of Loss of load.
Disabled Enable/Disable operation of Zone extension
5 Lev taken as curr loss due to remote CB trip
in % of IBase
0.200 Time delay on pick-up for MINCURR value
0.000 Time delay on pick-up for load current release
0.300 Time delay on drop off for load current release
IEC 61850 IEC 60617
identification identification
ECPSCH
Section 13
ANSI/IEEE C37.2
device number
- 85
811