Name
Type
Description
BLK5HL1
BOOLEAN
Fifth harmonic block signal, phase L1
BLK5HL2
BOOLEAN
Fifth harmonic block signal, phase L2
BLK5HL3
BOOLEAN
Fifth harmonic block signal, phase L3
BLKWAV
BOOLEAN
Common block signal, waveform criterion, from
any phase
BLKWAVL1
BOOLEAN
Block signal, waveform criterion, phase L1
BLKWAVL2
BOOLEAN
Block signal, waveform criterion, phase L2
BLKWAVL3
BOOLEAN
Block signal, waveform criterion, phase L3
IDALARM
BOOLEAN
Alarm for sustained diff currents in all three phases
OPENCT
BOOLEAN
An open CT was detected
OPENCTAL
BOOLEAN
Open CT Alarm output signal. Issued after a
delay ...
IDL1
REAL
Value of the instantaneous differential current,
phase L1
IDL2
REAL
Value of the instantaneous differential current,
phase L2
IDL3
REAL
Value of the instantaneous differential current,
phase L3
IDL1MAG
REAL
Magnitude of fundamental freq. diff. current, phase
L1
IDL2MAG
REAL
Magnitude of fundamental freq. diff. current, phase
L2
IDL3MAG
REAL
Magnitude of fundamental freq. diff. current, phase
L3
IBIAS
REAL
Magnitude of the bias current, which is common to
all phases
IDNSMAG
REAL
Magnitude of the negative sequence differential
current
6.1.5
Settings
Table 39:
T2WPDIF Group settings (basic)
Name
Values (Range)
Unit
Step
Default
Description
Operation
Off
On
-
-
Off
Operation Off / On
SOTFMode
Off
On
-
-
On
Operation mode for switch onto fault
tAlarmDelay
0.000 - 60.000
s
0.001
10.000
Time delay for diff currents alarm level
IDiffAlarm
0.05 - 1.00
IB
0.01
0.20
Dif. cur. alarm, multiple of base curr,
usually W1 curr.
IdMin
0.05 - 0.60
IB
0.01
0.30
Section1 sensitivity, multi. of base curr,
usually W1 curr.
IdUnre
1.00 - 100.00
IB
0.01
10.00
Unrestr. prot. limit, multiple of Winding 1
rated current
Table continues on next page
1MRK502052-UEN B
Section 6
Differential protection
107
Technical manual
Summary of Contents for Relion REG670
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